Thoracic Spine Anatomy and Landmarks
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Questions and Answers

What is the normal kyphotic curvature of the thoracic spine?

  • 30 degrees
  • 60 degrees
  • 40 degrees (correct)
  • 50 degrees
  • Which thoracic spine landmark is located at the level of the inferior angle of the scapula?

  • T12
  • C7
  • T7 (correct)
  • T4
  • Which rib articulates only with a single vertebra?

  • Rib 3
  • Rib 2
  • Rib 1 (correct)
  • Rib 8
  • What is the resting position of the thoracic spine?

    <p>Midway between flexion and extension (A)</p> Signup and view all the answers

    How do the superior and inferior facets of T2 to T11 face?

    <p>Superior faces up and slightly laterally, inferior faces down and slightly medially (A)</p> Signup and view all the answers

    How many pairs of true ribs are there?

    <p>7 pairs (D)</p> Signup and view all the answers

    What is the primary function of the rib cage in relation to the thoracic spine?

    <p>Provides protection for the heart and lungs (A)</p> Signup and view all the answers

    Which ligaments aid in the articulation between the ribs and thoracic vertebrae?

    <p>Costotransverse and radiate ligament (A)</p> Signup and view all the answers

    Which factor contributes to the rigidity of the thoracic spine?

    <p>The associated rib cage (C)</p> Signup and view all the answers

    What can commonly cause rib injuries?

    <p>Trauma (A)</p> Signup and view all the answers

    What is the normal range of forward flexion movement?

    <p>20 – 45 degrees (C)</p> Signup and view all the answers

    Which ribs are primarily involved in the bucket handle rib motion?

    <p>Ribs 7 – 10 (D)</p> Signup and view all the answers

    What symptom is associated with the T7 – T8 thoracic nerve root?

    <p>Pain in the epigastric area (B)</p> Signup and view all the answers

    Which of the following dysfunctions is NOT commonly associated with thoracic spine issues?

    <p>Osteoarthritis of the knee (C)</p> Signup and view all the answers

    During Posteroanterior Unilateral Vertebral Pressure (PAUVP), where do the thumbs rest?

    <p>On the appropriate lamina or transverse process (B)</p> Signup and view all the answers

    What is the purpose of the Costovertebral expansion test?

    <p>To measure rib motion (A)</p> Signup and view all the answers

    Which treatment technique applies pressure laterally from the spinous process?

    <p>Transverse Vertebral Pressure (TVP) (B)</p> Signup and view all the answers

    The rib springing technique requires the patient to be positioned in which manner?

    <p>Prone or on the side (C)</p> Signup and view all the answers

    What is a common referral site of pain from the heart?

    <p>Left chest (C)</p> Signup and view all the answers

    Which of the following statements about dermatomes is true?

    <p>Dermatomes overlap, reducing sensation loss risk. (C)</p> Signup and view all the answers

    What is a common characteristic of Scheuermann's disease?

    <p>It is the most common type of structural kyphosis in adolescents. (A)</p> Signup and view all the answers

    Which type of chest deformity is characterized by the sternum projecting forward and downward?

    <p>Pectus Carinatum (C)</p> Signup and view all the answers

    What condition is most likely to cause a rib hump on the convex side?

    <p>Structural Scoliosis (C)</p> Signup and view all the answers

    Which muscle is primarily responsible for inspiration?

    <p>Diaphragm (D)</p> Signup and view all the answers

    How is non-structural scoliosis primarily caused?

    <p>Poor posture (C)</p> Signup and view all the answers

    What typically follows a line joining the inferior angles of the scapula?

    <p>Pain of cervical origin (A)</p> Signup and view all the answers

    What is a common feature of the barrel chest deformity?

    <p>Sternum projects forward and upward (B)</p> Signup and view all the answers

    Which deformity is characterized by sharp localized posterior angulation due to anterior wedging of the thoracic vertebral body?

    <p>Hump back (D)</p> Signup and view all the answers

    Which condition results from postmenopausal osteoporosis causing anterior wedge fractures?

    <p>Dowager's hump (C)</p> Signup and view all the answers

    What muscle group assists in expiration?

    <p>Internal intercostals (D)</p> Signup and view all the answers

    Flashcards

    Root involvement pain

    Pain caused by issues with the roots of the spine, often radiating along the ribs or feeling like deep chest pain.

    Breathing-related pain

    Pain worsened by taking a deep breath, suggesting a problem with the lungs or ribs.

    Costovertebral pain

    Pain originating at the junction of the ribs and spine, possibly caused by muscle strain or joint irritation.

    Hyperkyphosis

    An abnormally increased curvature of the thoracic spine, exceeding 40 degrees between T4 and T12 vertebrae.

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    Scheuermann's disease

    A common structural kyphosis affecting adolescents, where the cause is unknown, with males being affected more than females.

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    Hump back

    A sharp, localized curvature caused by structural changes like a compressed or fractured vertebra.

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    Flat back

    Decreased pelvic inclination with a flexible spine, similar to round back, but the spine is mobile.

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    Scoliosis

    A lateral curvature of the spine, affecting either the lumbar or thoracic regions.

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    Non-structural scoliosis

    A temporary curvature caused by factors like posture, nerve irritation, leg length differences, or pelvic imbalances.

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    Structural scoliosis

    A permanent curvature caused by genetic, idiopathic, or congenital bony changes, affecting females more often than males.

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    Thoracic Spine Movement: Forward Flexion

    Bending forward, the thoracic spine typically moves between 20 and 45 degrees.

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    Thoracic Spine Movement: Extension

    Bending backward, the thoracic spine typically moves between 20 and 45 degrees.

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    Thoracic Spine Movement: Side Flexion

    Bending sideways, the thoracic spine typically moves between 20 and 40 degrees.

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    Thoracic Spine Movement: Rotation

    Twisting the upper body, the thoracic spine typically moves between 35 and 50 degrees.

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    Thoracic Spine: Costovertebral Expansion

    The space between the ribs and the spine should expand between 3.5cm and 7cm during inhalation.

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    Thoracic Spine: Rib Motion - Pump Handle

    Ribs 1-6 move superiorly and inferiorly, like a pump handle, during respiration.

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    Thoracic Spine: Rib Motion - Bucket Handle

    Ribs 7-10 move superiorly and laterally, then inferiorly and medially, like a bucket handle, during respiration.

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    Thoracic Spine: Rib Motion - Caliper Handle

    Ribs 11-12 move laterally and medially, like a caliper handle, during respiration.

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    Thoracic Nerve Root Symptoms: T5

    Pain around the nipple area may indicate involvement of the T5 nerve root.

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    Thoracic Nerve Root Symptoms: T10-T11

    Pain in the umbilical region may indicate involvement of the T10-T11 nerve roots.

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    Thoracic Spine Curvature

    The thoracic spine has a normal kyphotic curvature, which is a gentle inward curve. This curvature is typically around 40 degrees.

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    T4 Landmark

    The spinous process of T4 vertebra is at the same level as the root of the spine of the scapula, or the apex of the axillary fold.

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    T7-T8 Landmark

    The spinous processes of T7 and T8 vertebrae are roughly at the same level as the inferior angle of the scapula.

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    T12 Landmark

    The spinous process of T12 vertebra is at the same level as the head of the 12th rib.

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    Thoracic Spine Facet Orientation

    The superior facets of the thoracic vertebrae (T2-T11) face upwards, backwards, and slightly laterally. The inferior facets face downwards, forwards, and slightly medially.

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    Thoracic Spine Rule of 3's

    This rule helps locate the spinous processes relative to transverse processes. T1-T3 (and T12) are at the level of the corresponding SP, T4-T6 (and T11) are halfway above the SP, and T7-T9 (and T10) are at the level of the SP of the vertebra above.

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    Costotransverse Joints in Thoracic Spine

    These joints articulate the ribs with the transverse processes of the thoracic vertebrae. Ribs 1-10 articulate with the TVP at the same level, but ribs 11 and 12 do not.

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    True Ribs

    Ribs 1-7 are considered true ribs as they directly articulate with the sternum.

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    False Ribs

    Ribs 8-10 are false ribs because they attach to the costocartilage of the rib above, not directly to the sternum.

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    Floating Ribs

    Ribs 11 and 12 are floating ribs as they do not articulate with the sternum or the costocartilage.

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    Study Notes

    Thoracic Spine Anatomy

    • The thoracic spine is the most rigid section of the spine, due to its association with the rib cage.
    • The rib cage protects the heart and lungs.
    • It typically has a kyphotic curvature of approximately 40 degrees.

    Thoracic Spine Landmarks

    • C2: First palpable spinous process (SP) below the occipital bone.
    • C7 or T1: Most prominent SP at the base of the neck. C7 may slide forward with neck extension.
    • T4: Level with the root of the scapular spine or apex of the axillary fold.
    • T7-T8: Level with the inferior angle of the scapula. This is less reliable as the scapula is mobile.
    • T12: Level with the head of the 12th rib.

    Unique Identifiers

    • Facets on the vertebral body and transverse processes (TVPs) are present for rib articulation.
    • Spinous processes are more pointed and angle sharply downward.
    • Vertebral bodies are smaller compared to lumbar vertebrae.

    Thoracic Spine Joints

    • Manubriosternal, Sternocostal, and Costochondral joints are present.
    • Facet joints:
      • T1: Transitional, similar to cervical spine.
      • T2-T11: Superior facets face upwards, backwards, and slightly laterally; Inferior facets face downwards, forwards, and slightly medially. This facet orientation allows for slight rotation.
      • T11 & T12: Transitional, similar to lumbar spine.
    • Costotransverse ligaments: Connect ribs to transverse processes.
    • Radiate ligament: Wraps around the rib head.

    Rib Anatomy and Joints

    • Costovertebral joints: Rib articulates with vertebral body; stiffens the thoracic spine.
    • Ribs 1, 10, 11, and 12 articulate with a single vertebrae (whole facet) - "rule of 1".
    • Ribs 2-9 articulate with two adjacent vertebrae (demi-facet) - "rule of 2".
    • First rib articulates with T1 only; Second with T1 and T2; third with T2 and T3, and so on.
    • Costotransverse joints: Ribs articulate with transverse processes.
    • Ribs 1-10 articulate with their equivalent TVP. Ribs 11 and 12 do not have a TVP articulation.

    Rib Classification

    • True ribs (ribs 1-7): Directly connect to the sternum.
    • False ribs (ribs 8-10): Connect to the costal cartilage of the rib above.
    • Floating ribs (ribs 11 & 12): Do not connect to the sternum or cartilage.

    Thoracic Spine Clinical Considerations (History, Observation, Movement, Neurological)

    • Mechanism of Injury (MOI): Trauma is a common cause of rib/thoracic spine problems. Facet syndromes presents with stiffness and localized pain.
    • Pain Referral: Pain can originate from abdominal structures (stomach, liver, pancreas), referred pain from respiration; pain above a line joining the inferior angles of the scapulae suggests cervical origin. Costal pain related to breathing or arm motion.
    • Observation: Hyperkyphosis (greater than 40 degrees between T4 and T12), Kyphotic Deformities (structural and postural), Scheuermann's disease, Humpback (gibbus), Flatback, Dowager's hump, Scoliosis. Rib hump appears on convex side.
    • Movement: Active movement allows for forward flexion (20-45 degrees), extension (20-45 degrees), side flexion (20-40 degrees), rotation (35-50 degrees). Costovertebral expansion is 3.5-7cm. Different rib types have specific motions (pump handle, bucket handle, caliper).
    • Neurology: Dermatomal overlap; thoracic nerve root symptoms (e.g., T5, T7-T8, T10-T11, T12) and referred pain.
    • Breathing: Diaphragm and various intercostals muscles are crucial (see table 8-4)

    Common Thoracic Spine Dysfunctions and Treatment

    • Facet irritation, Hypo/Hyperkyphosis, Vertebral body rotations/translations, Rib faults, Thoracic Outlet Syndrome.
    • Specific treatment techniques such as : Joint Play Movements, Posteroanterior central vertebral pressure (PACVP), Posteroanterior unilateral vertebral pressure (PAUVP), Transverse vertebral pressure (TVP), and rib springing.

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    Description

    Explore the anatomy of the thoracic spine, the most rigid section of the spinal column closely associated with the rib cage. This quiz delves into key vertebral landmarks and unique identifiers relevant to thoracic spine structure and function. Test your knowledge on the thoracic joints and their significance in the human body.

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