Podcast
Questions and Answers
Which spinal curvature is characteristic of the thoracic spine?
Which spinal curvature is characteristic of the thoracic spine?
- Scoliotic
- Neutral
- Kyphotic (correct)
- Lordotic
What is the primary indication for obtaining oblique views of the lumbar spine?
What is the primary indication for obtaining oblique views of the lumbar spine?
- To measure spinal alignment
- To visualize the intervertebral discs
- To evaluate the facet joints (correct)
- To assess vertebral body height
In radiographic interpretation of the lumbar spine, visualizing the T12-L1 disc space is crucial for ensuring adequate coverage. What anatomical landmark confirms the inferior extent of a lumbar spine x-ray?
In radiographic interpretation of the lumbar spine, visualizing the T12-L1 disc space is crucial for ensuring adequate coverage. What anatomical landmark confirms the inferior extent of a lumbar spine x-ray?
- Femoral head
- Lower sacrum (correct)
- Coccyx
- Iliac crest
Which imaging modality is generally considered superior for identifying soft tissue injuries of the spine, such as ligamentous damage or disc herniation?
Which imaging modality is generally considered superior for identifying soft tissue injuries of the spine, such as ligamentous damage or disc herniation?
An epidural steroid injection (ESI) is a common spinal procedure. What do the initials 'ESI' stand for?
An epidural steroid injection (ESI) is a common spinal procedure. What do the initials 'ESI' stand for?
A patient presents with acute lower back pain following a fall. Which initial radiographic view is MOST useful for a preliminary assessment of the lumbar spine?
A patient presents with acute lower back pain following a fall. Which initial radiographic view is MOST useful for a preliminary assessment of the lumbar spine?
What anatomical feature of a lumbar vertebra is represented by the 'eye' of the 'Scottie dog' on an oblique radiographic view?
What anatomical feature of a lumbar vertebra is represented by the 'eye' of the 'Scottie dog' on an oblique radiographic view?
Which of the following is a typical indication for a CT scan of the thoracic or lumbar spine WITHOUT contrast?
Which of the following is a typical indication for a CT scan of the thoracic or lumbar spine WITHOUT contrast?
What is the abbreviation 'DDD' commonly used to describe in the context of spinal pathology?
What is the abbreviation 'DDD' commonly used to describe in the context of spinal pathology?
In assessing alignment on a lateral lumbar spine radiograph, which line is typically drawn along the posterior aspect of the vertebral bodies?
In assessing alignment on a lateral lumbar spine radiograph, which line is typically drawn along the posterior aspect of the vertebral bodies?
What is the clinical significance of the 'neck' of the 'Scottie dog' in oblique lumbar spine radiographs?
What is the clinical significance of the 'neck' of the 'Scottie dog' in oblique lumbar spine radiographs?
For which of the following indications is MRI of the thoracic or lumbar spine WITH contrast generally preferred?
For which of the following indications is MRI of the thoracic or lumbar spine WITH contrast generally preferred?
What is the anatomical term for the opening through which the spinal cord passes in each vertebra?
What is the anatomical term for the opening through which the spinal cord passes in each vertebra?
Which of the following views is MOST effective for assessing spondylolisthesis?
Which of the following views is MOST effective for assessing spondylolisthesis?
What does 'HNP' stand for in spinal terminology?
What does 'HNP' stand for in spinal terminology?
In reading a thoracic spine AP radiograph, which of the following is a landmark for the approximate level of T3?
In reading a thoracic spine AP radiograph, which of the following is a landmark for the approximate level of T3?
Which spinal ligament is located anterior to the vertebral bodies?
Which spinal ligament is located anterior to the vertebral bodies?
A 'swimmer's view' x-ray is often utilized in thoracic spine imaging. What is the primary purpose of this specialized view?
A 'swimmer's view' x-ray is often utilized in thoracic spine imaging. What is the primary purpose of this specialized view?
Which component of the vertebra projects posteriorly and is palpable along the midline of the back?
Which component of the vertebra projects posteriorly and is palpable along the midline of the back?
What is the term for a surgical procedure that involves the removal of the lamina of a vertebra to relieve pressure on the spinal cord or nerve roots?
What is the term for a surgical procedure that involves the removal of the lamina of a vertebra to relieve pressure on the spinal cord or nerve roots?
In the context of spinal instability, which radiographic views are typically obtained to assess for abnormal movement between vertebrae?
In the context of spinal instability, which radiographic views are typically obtained to assess for abnormal movement between vertebrae?
What is the approximate vertebral level of the tracheal bifurcation, a key landmark in thoracic radiography?
What is the approximate vertebral level of the tracheal bifurcation, a key landmark in thoracic radiography?
Which of the following is NOT typically evaluated when assessing 'Bones' in the 'ABCS' approach to reading spine radiographs?
Which of the following is NOT typically evaluated when assessing 'Bones' in the 'ABCS' approach to reading spine radiographs?
What is the lordotic curvature?
What is the lordotic curvature?
What is the abbreviation for Lumbar Microdiscectomy with Fusion?
What is the abbreviation for Lumbar Microdiscectomy with Fusion?
Which part of the vertebra forms the posterior portion of the vertebral foramen?
Which part of the vertebra forms the posterior portion of the vertebral foramen?
In assessing vertebral body height on a lateral spine radiograph, where should measurements be compared to detect compression fractures?
In assessing vertebral body height on a lateral spine radiograph, where should measurements be compared to detect compression fractures?
Which imaging modality is considered inferior to CT for the identification and characterization of cortical fractures of the vertebral bodies?
Which imaging modality is considered inferior to CT for the identification and characterization of cortical fractures of the vertebral bodies?
What is the primary indication for obtaining flexion and extension views of the lumbar spine?
What is the primary indication for obtaining flexion and extension views of the lumbar spine?
Which term describes the cartilaginous structure between vertebral bodies?
Which term describes the cartilaginous structure between vertebral bodies?
What is the 'body' of the 'Scottie dog' analogy in oblique lumbar spine radiographs?
What is the 'body' of the 'Scottie dog' analogy in oblique lumbar spine radiographs?
For optimal visualization of the thoracic spine on a lateral radiograph, what additional view might be necessary if the upper thoracic vertebrae are obscured?
For optimal visualization of the thoracic spine on a lateral radiograph, what additional view might be necessary if the upper thoracic vertebrae are obscured?
Which of the following is an indication for obtaining a thoracic and lumbar spine X-ray?
Which of the following is an indication for obtaining a thoracic and lumbar spine X-ray?
What is the term for the condition where there is a defect or fracture in the pars interarticularis, often described as a 'collar' on the Scottie dog?
What is the term for the condition where there is a defect or fracture in the pars interarticularis, often described as a 'collar' on the Scottie dog?
In the 'ABCS' approach to radiographic interpretation of the spine, what does 'C' typically stand for?
In the 'ABCS' approach to radiographic interpretation of the spine, what does 'C' typically stand for?
Which of the following is considered a 'soft tissue' structure evaluated in spinal radiography?
Which of the following is considered a 'soft tissue' structure evaluated in spinal radiography?
What is the required vertebral level visualization for a thoracic spine x-ray to ensure adequate anatomical coverage?
What is the required vertebral level visualization for a thoracic spine x-ray to ensure adequate anatomical coverage?
Which view is specifically used to assess for 'Scottie dog' abnormalities in lumbar spine imaging?
Which view is specifically used to assess for 'Scottie dog' abnormalities in lumbar spine imaging?
What is the significance of evaluating 'Alignment' in the systematic reading of thoracolumbar spine x-rays?
What is the significance of evaluating 'Alignment' in the systematic reading of thoracolumbar spine x-rays?
In a lateral lumbar spine radiograph demonstrating 'loss of height' of a vertebral body, what is the MOST likely interpretation?
In a lateral lumbar spine radiograph demonstrating 'loss of height' of a vertebral body, what is the MOST likely interpretation?
What is the primary advantage of MRI over CT in evaluating spinal conditions?
What is the primary advantage of MRI over CT in evaluating spinal conditions?
What is the most common mechanism of injury associated with a Chance fracture?
What is the most common mechanism of injury associated with a Chance fracture?
Which imaging modality is BEST for the initial evaluation of bony elements in an unstable Chance fracture?
Which imaging modality is BEST for the initial evaluation of bony elements in an unstable Chance fracture?
At which vertebral levels are Chance fractures MOST commonly seen?
At which vertebral levels are Chance fractures MOST commonly seen?
A patient involved in a high-speed MVA complains of severe back pain. Imaging reveals a fracture with collapse of the entire vertebral body. Which type of fracture is MOST likely?
A patient involved in a high-speed MVA complains of severe back pain. Imaging reveals a fracture with collapse of the entire vertebral body. Which type of fracture is MOST likely?
What radiographic finding is MOST indicative of a burst fracture on a frontal view?
What radiographic finding is MOST indicative of a burst fracture on a frontal view?
A patient presents with a compression injury to a vertebral body, but the posterior wall remains intact, and the spinal canal is not involved. Which of the following fractures is MOST likely?
A patient presents with a compression injury to a vertebral body, but the posterior wall remains intact, and the spinal canal is not involved. Which of the following fractures is MOST likely?
What is the TYPICAL mechanism of injury for a wedge fracture?
What is the TYPICAL mechanism of injury for a wedge fracture?
A patient presents with localized back pain after a motor vehicle accident. Radiographs reveal a fracture involving the spinous process of C7. This is referred to as:
A patient presents with localized back pain after a motor vehicle accident. Radiographs reveal a fracture involving the spinous process of C7. This is referred to as:
Following a fall, a patient complains of pain localized to the mid-thoracic region. Imaging reveals multiple fractures of the spinous processes. What type of injury should be suspected?
Following a fall, a patient complains of pain localized to the mid-thoracic region. Imaging reveals multiple fractures of the spinous processes. What type of injury should be suspected?
What is the MOST common location for lumbar disc herniations?
What is the MOST common location for lumbar disc herniations?
A patient presents with low back pain radiating down the leg, exacerbated by prolonged sitting. Which of the following conditions is MOST likely?
A patient presents with low back pain radiating down the leg, exacerbated by prolonged sitting. Which of the following conditions is MOST likely?
When is contrast typically indicated for MRI of the lumbar spine in the evaluation of herniated disc?
When is contrast typically indicated for MRI of the lumbar spine in the evaluation of herniated disc?
A patient with an L4-L5 disc herniation is MOST likely to exhibit weakness in which of the following movements?
A patient with an L4-L5 disc herniation is MOST likely to exhibit weakness in which of the following movements?
A patient presents with suspected nerve root compression. Which electrodiagnostic test measures the electrical activity of muscles at rest and during contraction?
A patient presents with suspected nerve root compression. Which electrodiagnostic test measures the electrical activity of muscles at rest and during contraction?
Which diagnostic study involves injecting contrast dye into a spinal disc to determine the location of a damaged disc?
Which diagnostic study involves injecting contrast dye into a spinal disc to determine the location of a damaged disc?
A patient presents with saddle anesthesia, bowel and bladder incontinence, and bilateral leg weakness. Which of the following conditions is MOST indicated?
A patient presents with saddle anesthesia, bowel and bladder incontinence, and bilateral leg weakness. Which of the following conditions is MOST indicated?
Which of the following is MOST important in the management of Cauda Equina Syndrome?
Which of the following is MOST important in the management of Cauda Equina Syndrome?
Which diagnostic imaging modality is MOST appropriate for initial diagnosis of Cauda Equina Syndrome?
Which diagnostic imaging modality is MOST appropriate for initial diagnosis of Cauda Equina Syndrome?
A patient undergoes an NCV test. Which description BEST describes NCV?
A patient undergoes an NCV test. Which description BEST describes NCV?
What is the MOST likely cause of a decreased speed observed during a Nerve Conduction Velocity (NCV) test?
What is the MOST likely cause of a decreased speed observed during a Nerve Conduction Velocity (NCV) test?
Which of the following mechanisms is LEAST likely to result in a spinous process fracture?
Which of the following mechanisms is LEAST likely to result in a spinous process fracture?
In the context of lumbar disc herniation, which nerve root is MOST likely affected by a central herniation at the L5-S1 level?
In the context of lumbar disc herniation, which nerve root is MOST likely affected by a central herniation at the L5-S1 level?
A patient presents with severe back pain following a motor vehicle accident. Imaging reveals a burst fracture with retropulsion of fracture fragments into the spinal canal. Which of the following additional injuries should the clinician be MOST concerned about?
A patient presents with severe back pain following a motor vehicle accident. Imaging reveals a burst fracture with retropulsion of fracture fragments into the spinal canal. Which of the following additional injuries should the clinician be MOST concerned about?
During lumbar discography, a patient reports that the pain reproduced by the injection into the L4-L5 disc is MORE severe and distinct compared to other levels tested. What is the MOST likely interpretation of this finding?
During lumbar discography, a patient reports that the pain reproduced by the injection into the L4-L5 disc is MORE severe and distinct compared to other levels tested. What is the MOST likely interpretation of this finding?
A patient is diagnosed with Cauda Equina Syndrome. If left untreated, which of the following complications is MOST likely to occur?
A patient is diagnosed with Cauda Equina Syndrome. If left untreated, which of the following complications is MOST likely to occur?
Compared to the lumbar spine, what is a distinguishing characteristic of the thoracic spine?
Compared to the lumbar spine, what is a distinguishing characteristic of the thoracic spine?
Which of the following imaging findings would be BEST evaluated using MRI rather than CT?
Which of the following imaging findings would be BEST evaluated using MRI rather than CT?
What is the PRIMARY indication for obtaining AP and Lateral radiographs of the thoracic and lumbar spine?
What is the PRIMARY indication for obtaining AP and Lateral radiographs of the thoracic and lumbar spine?
When reading lumbar spine x-rays, visualization to the lower sacrum is required. What disc space do you need to see?
When reading lumbar spine x-rays, visualization to the lower sacrum is required. What disc space do you need to see?
What is the MOST likely reason to order flexion and extension views of the lumbar spine?
What is the MOST likely reason to order flexion and extension views of the lumbar spine?
Which of the following is NOT part of the 'Bones' assessment in the 'ABCS' approach to reading spine radiographs?
Which of the following is NOT part of the 'Bones' assessment in the 'ABCS' approach to reading spine radiographs?
A patient presents with a history of metastatic cancer. Which imaging modality is MOST appropriate for evaluating spinal involvement?
A patient presents with a history of metastatic cancer. Which imaging modality is MOST appropriate for evaluating spinal involvement?
According to the 'ABCS' approach to radiographic interpretation of the spine, what does 'S' refer to?
According to the 'ABCS' approach to radiographic interpretation of the spine, what does 'S' refer to?
When evaluating the alignment of the spine on a lateral radiograph, along which structure should a line be drawn to assess the anterior aspect?
When evaluating the alignment of the spine on a lateral radiograph, along which structure should a line be drawn to assess the anterior aspect?
A patient presents with persistent lower back pain despite conservative treatment. What MRI finding will make the patient a surgical candidate?
A patient presents with persistent lower back pain despite conservative treatment. What MRI finding will make the patient a surgical candidate?
Which of the following best describes what an oblique view of the lumbar spine is used for?
Which of the following best describes what an oblique view of the lumbar spine is used for?
A patient presents with acute back pain and suspected vertebral fracture. Which imaging modality is MOST appropriate if MRI is contraindicated?
A patient presents with acute back pain and suspected vertebral fracture. Which imaging modality is MOST appropriate if MRI is contraindicated?
You are assessing a lateral lumbar spine radiograph. What does 'loss of height' of a vertebra indicate?
You are assessing a lateral lumbar spine radiograph. What does 'loss of height' of a vertebra indicate?
During an assessment, you need to count all vertebra to determine an injury and to accurately determine the location. What will you need to see when counting the lumbar vertebrae?
During an assessment, you need to count all vertebra to determine an injury and to accurately determine the location. What will you need to see when counting the lumbar vertebrae?
A patient presents with a suspected pars interarticularis defect. What lumbar spine view is BEST to visualize this?
A patient presents with a suspected pars interarticularis defect. What lumbar spine view is BEST to visualize this?
Which of the following views is used to help visualize the cervicothoracic junction?
Which of the following views is used to help visualize the cervicothoracic junction?
Which spinal anatomy would Anterior Cervical Discectomy with Fusion target?
Which spinal anatomy would Anterior Cervical Discectomy with Fusion target?
In the lumbar spine, what does the abbreviation, LL, stand for?
In the lumbar spine, what does the abbreviation, LL, stand for?
What can a lumbar spine X-Ray show when reading it?
What can a lumbar spine X-Ray show when reading it?
A patient is diagnosed with Persistent or worsening symptoms (sxs) despite medical management. If MRI is considered inferior to CT is identification, what type of injuries can a MRI help identify?
A patient is diagnosed with Persistent or worsening symptoms (sxs) despite medical management. If MRI is considered inferior to CT is identification, what type of injuries can a MRI help identify?
If assessing lumbar spine images and comparing height among images, what vertebral body can the lumbar be compared to?
If assessing lumbar spine images and comparing height among images, what vertebral body can the lumbar be compared to?
What is a specific Landmark when reading X-rays of the thoracic spine?
What is a specific Landmark when reading X-rays of the thoracic spine?
Which of the following is an anatomical feature of the thoracic vertebra?
Which of the following is an anatomical feature of the thoracic vertebra?
What lumbar spine x-ray view best depicts the 'Scotty Dog'?
What lumbar spine x-ray view best depicts the 'Scotty Dog'?
You are looking at a lateral of the L-Spine and notice a thinning of the disc in the back. What does it normally measure in relation to the front?
You are looking at a lateral of the L-Spine and notice a thinning of the disc in the back. What does it normally measure in relation to the front?
Which of the following are not considered as anatomical structures of the spine on imaging modalities?
Which of the following are not considered as anatomical structures of the spine on imaging modalities?
Which structure passes through vertebral foramen?
Which structure passes through vertebral foramen?
What part of the sacrum needs to be visualized when scanning or visualizing lumbar?
What part of the sacrum needs to be visualized when scanning or visualizing lumbar?
A patient comes in to get their thoracic spine evaluated and the trachea is being marked as a possible location. Where is the trachea bifurcation located?
A patient comes in to get their thoracic spine evaluated and the trachea is being marked as a possible location. Where is the trachea bifurcation located?
While evaluating spine x-rays, what should be focused on or asked?
While evaluating spine x-rays, what should be focused on or asked?
When reading lumber spine images, what can't be determined when viewing and are instead, better viewed using an MRI?
When reading lumber spine images, what can't be determined when viewing and are instead, better viewed using an MRI?
When viewing lumbar spine images, is the sacrum needed? If so, how much do you need to view?
When viewing lumbar spine images, is the sacrum needed? If so, how much do you need to view?
A patient presents with low back and right leg pain. The physician suspects lumbar radiculopathy. Which electrodiagnostic study would be MOST helpful in confirming this diagnosis?
A patient presents with low back and right leg pain. The physician suspects lumbar radiculopathy. Which electrodiagnostic study would be MOST helpful in confirming this diagnosis?
A 70 year old male goes in for osteoporosis. What part of the body should be focused/evaluated when checking for the conditions progression during an exam/scan?
A 70 year old male goes in for osteoporosis. What part of the body should be focused/evaluated when checking for the conditions progression during an exam/scan?
What can lateral L-spine tests show?
What can lateral L-spine tests show?
When looking at a thoracic x-ray view, which of the following processes would you NOT see?
When looking at a thoracic x-ray view, which of the following processes would you NOT see?
What is the location and shape of the spine?
What is the location and shape of the spine?
If there is slight obliquity, what is being resuled with one double cortisol line.
If there is slight obliquity, what is being resuled with one double cortisol line.
What is the indication for Flexion?
What is the indication for Flexion?
A patient involved in a motor vehicle accident presents with lower back pain. Radiographic imaging reveals a fracture line extending horizontally through the vertebral body and posterior elements. Which of the following fractures is MOST likely?
A patient involved in a motor vehicle accident presents with lower back pain. Radiographic imaging reveals a fracture line extending horizontally through the vertebral body and posterior elements. Which of the following fractures is MOST likely?
Which of the following mechanisms is MOST likely to result in a Chance fracture?
Which of the following mechanisms is MOST likely to result in a Chance fracture?
A patient presents with severe back pain following a fall from a significant height. Imaging reveals a fracture with collapse of the vertebral body, and retropulsion of fragments into the spinal canal. Which of the following fractures is MOST likely?
A patient presents with severe back pain following a fall from a significant height. Imaging reveals a fracture with collapse of the vertebral body, and retropulsion of fragments into the spinal canal. Which of the following fractures is MOST likely?
A patient presents with a compression injury to a vertebral body. Imaging reveals loss of anterior vertebral body height but the posterior wall remains intact, and the spinal canal is not involved. Which of the following fractures is MOST likely?
A patient presents with a compression injury to a vertebral body. Imaging reveals loss of anterior vertebral body height but the posterior wall remains intact, and the spinal canal is not involved. Which of the following fractures is MOST likely?
A patient presents after a motor vehicle accident complaining of localized back pain. Radiographs reveal a fracture involving the spinous process of T1. This is referred to as:
A patient presents after a motor vehicle accident complaining of localized back pain. Radiographs reveal a fracture involving the spinous process of T1. This is referred to as:
A patient presents with low back pain radiating down the leg. The pain is exacerbated by prolonged sitting. Which of the following conditions is MOST likely?
A patient presents with low back pain radiating down the leg. The pain is exacerbated by prolonged sitting. Which of the following conditions is MOST likely?
Which electrodiagnostic study would be MOST helpful in confirming lumbar radiculopathy in a patient presenting with low back and right leg pain?
Which electrodiagnostic study would be MOST helpful in confirming lumbar radiculopathy in a patient presenting with low back and right leg pain?
Flashcards
Kyphosis
Kyphosis
Concave anteriorly. The normal curve of the thoracic spine .
Lordosis
Lordosis
Concave posteriorly. The normal curve of the lumbar spine.
ESI (Spine)
ESI (Spine)
Epidural Steroid Injection - a minimally invasive procedure used to treat pain caused by inflamed spinal nerves.
LL (Spine)
LL (Spine)
Signup and view all the flashcards
LMD (Spine)
LMD (Spine)
Signup and view all the flashcards
LMDF (Spine)
LMDF (Spine)
Signup and view all the flashcards
ACDF (Spine)
ACDF (Spine)
Signup and view all the flashcards
PCLF (Spine)
PCLF (Spine)
Signup and view all the flashcards
HNP (Spine)
HNP (Spine)
Signup and view all the flashcards
DDD (Spine)
DDD (Spine)
Signup and view all the flashcards
Annulus Fibrosis
Annulus Fibrosis
Signup and view all the flashcards
Nucleus Pulposus
Nucleus Pulposus
Signup and view all the flashcards
Thoracic Spine
Thoracic Spine
Signup and view all the flashcards
Lumbar Spine
Lumbar Spine
Signup and view all the flashcards
Indications for Spine X-ray
Indications for Spine X-ray
Signup and view all the flashcards
Indications for Spine CT
Indications for Spine CT
Signup and view all the flashcards
Indications for Spine MRI
Indications for Spine MRI
Signup and view all the flashcards
Scotty Dog
Scotty Dog
Signup and view all the flashcards
Spondylolysis
Spondylolysis
Signup and view all the flashcards
Chance Fracture
Chance Fracture
Signup and view all the flashcards
Burst Fracture
Burst Fracture
Signup and view all the flashcards
Wedge Fracture
Wedge Fracture
Signup and view all the flashcards
Spinous Process Fracture
Spinous Process Fracture
Signup and view all the flashcards
Herniated Disc
Herniated Disc
Signup and view all the flashcards
EMG
EMG
Signup and view all the flashcards
NCV
NCV
Signup and view all the flashcards
Cauda Equina Syndrome
Cauda Equina Syndrome
Signup and view all the flashcards
Tracheal Bifurcation Landmark
Tracheal Bifurcation Landmark
Signup and view all the flashcards
Clavicle Landmark
Clavicle Landmark
Signup and view all the flashcards
Spine X-ray Indications
Spine X-ray Indications
Signup and view all the flashcards
Indications for CT without contrast
Indications for CT without contrast
Signup and view all the flashcards
Indications for Spine MRI without contrast
Indications for Spine MRI without contrast
Signup and view all the flashcards
MRI with and without contrast
MRI with and without contrast
Signup and view all the flashcards
Thoracolumbar Spine X-ray
Thoracolumbar Spine X-ray
Signup and view all the flashcards
Lumbar Spine X-ray Count
Lumbar Spine X-ray Count
Signup and view all the flashcards
Thoracic Spine X-ray Count
Thoracic Spine X-ray Count
Signup and view all the flashcards
Thoracolumbar X-ray Views
Thoracolumbar X-ray Views
Signup and view all the flashcards
Oblique X-ray View
Oblique X-ray View
Signup and view all the flashcards
Comparing Spine Imaging Studies
Comparing Spine Imaging Studies
Signup and view all the flashcards
Thoracic Spine Anatomy
Thoracic Spine Anatomy
Signup and view all the flashcards
Chance Fracture - Definition
Chance Fracture - Definition
Signup and view all the flashcards
Burst Fracture - Definition
Burst Fracture - Definition
Signup and view all the flashcards
Wedge Fracture - Definition
Wedge Fracture - Definition
Signup and view all the flashcards
Spinous Process Fracture - Definition
Spinous Process Fracture - Definition
Signup and view all the flashcards
Cauda Equina - Key Symptoms
Cauda Equina - Key Symptoms
Signup and view all the flashcards
Herniated Disc - Diagnosis
Herniated Disc - Diagnosis
Signup and view all the flashcards
Herniated Disc - Risk Factors
Herniated Disc - Risk Factors
Signup and view all the flashcards
EMG/NCV - Purpose
EMG/NCV - Purpose
Signup and view all the flashcards
Herniated Disc - Symptoms
Herniated Disc - Symptoms
Signup and view all the flashcards
Sciatica Work-up
Sciatica Work-up
Signup and view all the flashcards
Lumbar Discography
Lumbar Discography
Signup and view all the flashcards
Electromyogram
Electromyogram
Signup and view all the flashcards
Nerve Conduction Velocity
Nerve Conduction Velocity
Signup and view all the flashcards
Study Notes
Thoracolumbar Spine
- Views and qualities are required for axial skeleton x-ray and indications for further testing.
- Fractures, dislocations, and subluxations of the thoracic and lumbar spine, including chance, burst and wedge fractures can be identified.
- Pathology is associated with the axial skeleton, including ankylosing spondylitis, herniated disc disease, kyphosis, scoliosis, spinal stenosis, spondylolisthesis, and spondylolysis
Chance Fracture
- AKA
lap seat belt fracture
- Result of MVA where lap belt immobilizes the pelvis, while the rest of the upper body thrusts forward (hyperflexion)
- Associated with intraabdominal injuries
- Presents with severe back pain, worse with movement
- Diagnose using T and L spine x-ray AP & lateral views
- Best seen on a lateral view of the spine
- Results in horizontal severing of a vertebra
- Usually T12, L1, or L2
- Unstable fracture
- CT evaluates bony elements and MRI assesses soft tissue
- Will present as an anterior wedge fracture of the vertebral body with a horizontal fracture through posterior elements or distraction of facet joints and spinous processes
Burst Fracture
- High energy compressive axial loading spinal trauma (severe accidents, MVA or fall from a height)
- Diagnose via T & L spine x-ray AP & lateral.
- Considered an unstable fracture.
- Results in the collapse of an entire vertebral body.
- On lateral view the height of the anterior and posterior wall of vertebral body are short.
- On frontal view the interpedicular distance is increased.
- Fragments extend into the spinal canal, and are common, resulting in possible neurologic damage
- Post surgical stabilization stabilizes thoracic burst fractures
Wedge Fracture
- Hyperflexion compression injury (high impact trauma: falling from height and landing on buttocks OR predisposing osteoporosis)
- No neurological damage is present
- Diagnose with T & L spine x-ray AP and lateral view.
- Results in Collapse of anterior vertebral body.
- On lateral view: Decreased height of anterior wall of vertebral body; Posterior wall of body remains intact and spinal canal is not involved.
- Four points are determined on X-rays of injured vertebrae: (a) and (c) at the most anterior-superior and anterior-inferior endplate margins, and (b) and (d) at the most posterior-superior and posterior-inferior endplate margins
Spinous Process Fracture
- Direct trauma (fall or MVA), repetitive stress (sports or heavy lifting), muscle spasms, osteoporosis
- Sharp and localized to the area of the fracture
- Diagnose using T or L spine x-ray AP & lateral
- Fracture presents as a black line in spinous process
- Referred to as Clay-Shoveler's when it is located C6-T3
- May be a contiguous fracture
Lumbar Spine: Herniated Disc
- Heavy lifting, fall, accident, poor posture, repetitive motion, aging are common causes
- Pain worsens after sitting or standing, at night, or when bending or when sneezing, coughing, or laughing
- Compresses nerve root, causing radicular pain (lumbar radiculopathy)
- Radiation of pain to the buttock, thigh, leg, and foot
- Decreased or absent reflexes, weakness and paresthesias (decreased sensation in dermatomal distribution), and + SLR
- Diagnose with L-spine MRI without contrast.
- Contrast is used when previous spine surgery or injury, suspected infection, tumor, or atypical presentation
- Most common at L5-S1 disc followed by L4-5.
- Central herniation will affect the nerve exiting below and lateral herniation will affect the nerve exiting at that level
- In the cervical and thoracic region, this doesn't usually apply because the spinal cord is compact and the nerve being affected doesn't typically change
- A C5-6 disc herniation central or lateral affects the C6 nerve root
- Example of L5-S1 disc herniation centrally affects S1 and laterally affects L5 because of the anatomy of the lumbar spinal nerves in the cauda equina
Tests
- Tests that can be helpful in identifying the specific nerve pathology: EMG, NCV, lumbar discography
EMG: Electromyogram
- Measures the electrical activity of muscles at rest & contraction
- Aids with dx of nerve compression or injury (carpal tunnel syndrome), nerve root injury (sciatica), other problems
- Electrodes placed into skin overlying muscle to detect electrical activity of muscle
- Electrical activity in the muscle is shown as wavy and spiky lines on video monitor
- Surface EMG (SEMG) does not involve piercing skin & is not painful
NCV: Nerve Conduction Velocity
- Shock-emitting electrode placed over nerve, recording electrode over muscles controlled by that nerve
- Measures time to contract in response to electric pulses
- Speed = conduction velocity
- Decreased speed indicates nerve damage - trauma, neuropathy, viral nerve infection or nerve entrapment diseases
Lumbar Discography
- Needle is inserted at various disc levels to determine location of damaged disc
- Contrast dye is injected into disc nucleus
- Dye replicates painful nerve compression, confirming source of pain
Cauda Equina Syndrome
- Causes same as for disc herniation
- Cauda equina and cord compression develop in hours
- Result of inadequate or delayed treatment of HNP
- Triad:
- Saddle anesthesia
- Back and bilateral leg pain
- Urinary/Fecal incontinence or retention
- Diagnose with MRI. Cauda equina nerves are compressed
Abbreviations
- ESI: Epidural Steroid injection.
- LL: Lumbar Laminectomy
- LMD: Lumbar Microdiscectomy
- LMDF: Lumbar Microdiscectomy with Fusion
- ACDF: Anterior Cervical Discectomy with Fusion
- PCLF: Posterior Laminoforaminotomy with Fusion
- HNP: Herniated Nucleus Pulposus
- DDD: Degenerative Disc Disease
Thoracic Spine Anatomy
- 12 vertebrae (T1-T12)
- Concave anteriorly; kyphosis
- Anatomy
- 1 body
- 2 transverse processes
- 2 pedicles
- 2 pars interarticularis
- 2 laminae
- 1 spinous process
- 1 vertebral foramen containing the spinal cord
Lumbar Spine Anatomy
- 5 vertebrae (L1-L5)
- Concave posteriorly; Lordosis
Thoracic and Lumbar Spine Radiography indications
X-ray
- Acute/chronic pain
- Post-surgery
- Trauma, AP and Lateral views (lateral is most useful)
- Spondylosis (Oblique)
- Instability (Flexion and Extension)
- Any cervical spine fracture means to complete spine imaging
CT wo contrast
- Fractures and dislocations
CT w/ or wo contrast
- When MRI is contraindicated
MRI wo contrast
- Persistent or worsening symptoms after medical management, or considering surgical candidates.
- Inferior to CT for identifying cortical fractures, but superior for soft tissue and trabecular vertebral body fractures.
- Pregnancy to rule out fracture
MRI w/ or wo contrast
- Known hx of cancer, metastatic disease, spinal cord mass, multiple sclerosis
- High suspicion for epidural abscess or discitis/osteomyelitis
- Previous spinal surgery
Reading a Thoracolumbar Spine X-ray
- General: Identification, Date of study, Study ordered, Body part, Positioning, Penetration, Contrast, Artifacts
- Count visible number of vertebrae.
- Lumbar: must see T11/12 disc space to lower sacrum; count lumbar vertebrae from T12 rib
- Thoracic: Must see C7-L1.
- Alignment: Vertical midline of image.
- Draw lines at ALL, PLL, and spinolaminar line on lateral view.
- Bones: Evaluate for integrity.
- All transverse processes and a portion of the ribs seen.
- Look for fracture lines
- Compare the anterior and posterior cortex of each vertebral body for any differences in height with adjacent ones
- Cartilage: Ligaments, ALL, PLL, ligamentum flavum, interspinous ligaments, supraspinous ligament
- Soft tissue: Discs and spinal cord
- Intervertebral disc spaces should be spaced evenly.
- Compare studies to determine acute vs chronic
Landmarks
- Clavicle is at T3 on a Thoracic Spine AP view
- Tracheal bifurcation is T4/5
- 12th rib is at T12
Oblique View
- Each vertebra looks like a scottie dog
- Ensure none of the Scottie dogs have a collar, which implies pars interarticularis defect
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.