Podcast
Questions and Answers
According to Fryette's Law #1, what occurs when the spine is in a neutral position?
According to Fryette's Law #1, what occurs when the spine is in a neutral position?
What characterizes Fryette's Law #2, relating to non-neutral mechanics of the spine?
What characterizes Fryette's Law #2, relating to non-neutral mechanics of the spine?
Which Fryette's Law explains the reduction of motion in all directions when the spine moves in one direction?
Which Fryette's Law explains the reduction of motion in all directions when the spine moves in one direction?
What landmark is associated with the L4 spinous process during palpation?
What landmark is associated with the L4 spinous process during palpation?
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Which of the following is NOT typically identified during the palpation of soft tissues?
Which of the following is NOT typically identified during the palpation of soft tissues?
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Which ligament in the lumbar spine is responsible for preventing excessive hyperflexion?
Which ligament in the lumbar spine is responsible for preventing excessive hyperflexion?
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What is the primary movement associated with a lumbopelvic extension?
What is the primary movement associated with a lumbopelvic extension?
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What is a characteristic motion of the facet joints in the lumbar spine?
What is a characteristic motion of the facet joints in the lumbar spine?
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During sacral nutation, what direction does its articular surface move relative to the innominate bones?
During sacral nutation, what direction does its articular surface move relative to the innominate bones?
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Which condition is a form of innominate dysfunction in pelvic anatomy?
Which condition is a form of innominate dysfunction in pelvic anatomy?
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What limits rotation in the lumbopelvic region?
What limits rotation in the lumbopelvic region?
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What is the primary role of Fryette’s laws in spinal motion?
What is the primary role of Fryette’s laws in spinal motion?
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Which of the following occurs during the 'opening' of facet joints?
Which of the following occurs during the 'opening' of facet joints?
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What is the typical degree range for flexion in the lumbopelvic region?
What is the typical degree range for flexion in the lumbopelvic region?
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What anatomical feature is most affected by sacral torsions?
What anatomical feature is most affected by sacral torsions?
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Study Notes
Lumbopelvic Anatomy and Kinematics
- This presentation covers the anatomy and kinematics of the lumbopelvic region.
- The presenter, Adam Squires, PT, DPT, Cert SMT, Cert DN is a Board Certified Specialist in Orthopedic Physical Therapy.
- The objectives include understanding normal anatomy, osteo and arthrokinematics, Fryette's laws, and palpation skills.
Lumbopelvic Anatomy
- Lumbar Spine: Includes 5 lumbar vertebrae, Anterior longitudinal ligament, Posterior longitudinal ligament, Ligamentum flavum, and Interspinal ligament.
- Facet Joints: Facet joint orientation varies significantly (half-moon, flat, asymmetric). Anomalies (tropisms) are present at L5-S1.
- Intervertebral Disc: Includes endplates.
- Lumbar Spine Muscles: Includes superficial and deep muscles like Erector spinae, Hip abductors, Hip extensors/rotators, Hip flexors and Hip adductors.
- Sacrum/Coccyx: The sacrum consists of 5 fused vertebrae. The coccyx is composed of several fused vertebrae. Includes ligaments like the sacrospinous ligament and sacrotuberous ligament
- Pelvis: Includes bones such as ilium, ischium, and pubis. Structures such as the pubic symphysis, sacral canal, and superior/inferior articular processes. Ligaments such as the sacroiliac ligaments.
- Anatomical Differences: Different pelvic shapes (gynecoid vs. android).
- Sacral Torsions: Defined using oblique and transverse axes.
- Innominate Dysfunctions: Types include inflares/outflares, anterior/posterior rotations, and upslips/downslips.
Kinematics
- Osteokinematics: Flexion (40–60 degrees), Extension (20–35 degrees), Lateral Flexion (15–20 degrees), and Rotation (3–18 degrees).
- Rotation: Limited by facet joint orientation.
- Nutation vs. Counternutation: Describe movement of the sacrum relative to the ilium.
- Arthrokinematics: Facet joint slides without roll, intervertebral joints pivot and glide, ball bearing.
- "Closing" of facet joints: extension, ipsilateral lateral flexion, contralateral rotation.
- "Opening" of facet joints: flexion, contralateral lateral flexion, ipsilateral rotation. Sacral nutation/counternutation.
Fryette's Laws
- Law #1: Neutral Spine - Side bending occurs in the opposite direction of rotation.
- Law #2: Non-neutral Spine - Side bending and rotation occur in the same direction.
- Law #3: Motion in one direction restricts motion in other directions; high-velocity, low-amplitude motions may be safer.
Palpation
- Bony Landmarks: Spinous processes, top of iliac crest, PSIS, sacral base, S2 spinous process, inferior lateral angle (ILA), ischial tuberosities, ASIS, AIIS, and pubic symphysis.
- Soft Tissues: Erector spinae, hip abductors, hip extensors/rotators, hip flexors, hip adductors
Objectives Summary
- The main goals are to understand the normal structures, kinematics and relationships, and related movement patterns in the lumbopelvic region.
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Description
Test your knowledge on the anatomy and kinematics of the lumbopelvic region. This quiz covers essential topics such as the lumbar spine structure, the role of facet joints, and the major muscles involved. Improve your understanding of key concepts and anatomical features necessary for orthopedic physical therapy.
