Musculoskeletal: UE Flashcards
joint
the point of connection between two bones or elements of a skeleton (especially if it allows motion)
synovial joint
- Bones don’t touch each other, freely moveable
- Bones are covered with articular cartilage
- Synovial cavity separates the bones and cushions the joint
- Synovial membrane lines synovial cavity, secretes synovial fluid
- Joint capsule is fibrous structure that surrounds membrane
- Joint capsule is strengthened by ligaments extending from bone to bone
- Examples: Knee, Shoulder
cartilaginous joint
- Bones are separated by fibrocartilaginous discs, slightly movable
- Bony surfaces separated by cartilaginous discs
- Center of each disc nucleus pulposus (shock absorber)
- Example: vertebral bodies of spine
fibrous joint
- Bones are almost in direct contact, no movement
- Intervening layers of fibrous tissue or cartilage hold bones together
- Bones are more or less in direct contact
- Examples: forearm, suture of the skull
ball and socket joint
- Synovial
- convex surface in concave cavity
- flexion, extension, abduction, adduction, rotation, and circumduction
- Ex. shoulder and hip
hinge joint
synovial joint
- flat, planar
- allow motion in one plane only: flexion and extension
- Ex. IP joints of hand and foot, elbow
Condylar joint
- convex or concave: condyles
- movement of two articulating surfaces
- example: knee or temporomandibular joint
inspection of UE
- joint symmetry, alignment and bony deformities
- Surrounding tissues for skin changes (erythema), nodules, muscle atrophy, swelling
palpation of UE
- joint for crepitus, tenderness, deformity
- Surrounding tissues for skin changes (warmth), nodules, muscle atrophy
ROM of UE
- test joint function and stability, integrity of ligaments
- Active ROM first, then passive ROM if appropriate
Strength testing of UE
- test against resistance to grade strength of the muscle
- Strength testing evaluates muscular strength and nerve function which controls that muscle
- Part of neurological exam section in Bates
- Often documented as part of musculoskeletal exam
- Graded on a scale from 0-5 (see Bates table)
- 5/5 is normal strength
bones of the shoulder joint
humerus, clavicle, scapula
joints of the shoulder
- Glenohumeral Joint
- -Ball and socket joint at scapula and humerus
- -Large ROM
- Sternoclavicular Joint (SC joint)
- Acriomoclavicular Joint (AC joint)
muscles of the shoulder
- Scapulohumeral Group
- -Rotator Cuff: SITS
- Axioscapular Group
- -Help rotate the scapula
- Axiohumeral Group
- -Internal rotation of the shoulder
rotator cuff
- Supraspinatus
- -Initiates Deltoid Abduction
- Infraspinatus
- -External Rotation
- Teres Minor
- -External Rotation
- Subscapularis
- -Internal Rotation, Adduction
biceps tendon
Long head of biceps enclosed in synovial sheath
subacromial bursa
Lies on top of supraspinatus tendon between head of the humerus and the acromion
Shoulder ROM
Flexion Extension Abduction Adduction Rotation -Internal -External Circumduction
inspection of shoulder
Look for swelling, muscle atrophy, deformity or abnormal positioning
palpation of shoulder
- Find 3 bony landmarks
- -Acromion process; move laterally and superior to greater tubercle of humerus
- -Acromioclavicular joint: find the anterior tip of the acromion, distal end of the clavical
- -Coracoid process (medial bony prominence)
crossover test
- Adduct patient’s arm across chest as you palpate the AC joint
- Pain indicates positive test
- -AC or SC joint disease
strength testing of shoulder
- Strength testing: movement against resistance
- -Flexion/Extension
- -Abduction/Adduction
- -Internal/External Rotation
- -Shrug (CN XI)
- Isolate shoulder joint with proper hand position and bracing
- Gives you a sense of rotator cuff strength