Neck and Spine Lecture Flashcards
3 types of joints
- Fibrous (immovable)
- Cartilaginous (minimal movement)
- Synovial (freely moveable)
Describe cartilaginous joints
- Minimal movement
- Cartilage b/w bony surfaces
- AC joint, symphysis pubis, vertebral bodies
Describe fibrous joints
- Immovable
- Skull sutures
Describe synovial joints
- Freely moveable
- Articular cartilage, synovial fluid/joint capsule, ligament
- Ball and socket (hip, shoulder)
- Hinge (fingers, elbow)
- Condylar (knee, TMJ)
TMJ - type of joint and description
- Synovial joint
- Busiest joint of the body (talking and chewing)
What is the busiest joint of the body?
TMJ (talking and chewing)
What is the TMJ formed by
- Fossa/articular tubercle of temporal bone
- Condyle of mandible
Inspection of TMJ:
- Redness, swelling, deformity
- Swelling may be just anterior to external auditory meatus
- Check for symmetry bilat
Palpation of TMJ:
- Fingers anterior to tragus
- Pt opens mouth
- Should have smooth ROM
- Snap or click w/o pain is ok
- Note swelling/tenderness
Primary supporting structure of the trunk?
Spine
Vertebral column consists of:
- 24 vertebrae (7 C, 12 T, 5 L)
- 1 fused sacrum and coccyx (vestigial tail)
- Offset by intervertebral discs
What are the spinal nerves protected by?
Intervertebral foramen
What is the spinal cord protected by?
Posterior vertebral arch
Where are the spinal joints slightly moveable?
Between the vertebral bodies and articular facets
Define intrinsic muscles
Originates in the limb or part in which it inserts
Define extrinsic muscles
Does NOT originate within the part or limb in which it inserts
Intrinsic muscles of the back
- Extend from cranium to pelvis
- Maintain posture and move vertebral column
- Divided into superficial, intermediate, deep
Extrinsic muscles of the back
- Connect upper extremities to the trunk
- V shaped muscles of upper and mid back
- Lat dorsi, trap, rhomboids, levator scapulae
Muscles involved in C-spine motion (flex, ext, rotation, lat bending)
- Flex: SCM, scalene, pre-vertebrals
- Extension: trap, splenius, small intrinsics
- Rotation: SCM, small intrinsics
- Lat bending: scalene, small intrinsics
SCM, scalene, pre-vertebrals control what C-spine movement?
Flexion
Trap, splenius, small intrinsics control what C-spine movement?
Extension
SCM and small intrinsics control what C-spine movement?
Rotation