Arthrokenematics & Jnt Mobilization Flashcards
(9 cards)
Normal End Feels
Bony/Hard - abrupt limit to jnt motion, “locked”
Firm- slight give, most common, soft tissue stretch
Soft- limited ROM due to mm/fat tissue
Abnormal End Feels
Empty- “loosey-goosey”,lack mechanical limits
- mm/lig tears
Abnormal bony- sudden hard stop before full ROM
- osteophyte, spasticity, contractures
Springy- jnt bounces back, “catching”
- obsticles (cartilage tear)
Muscle guarding- trauma/pain causing a reflex or spasm limit ROM
Accessory Motion (2 types)
Jnt movement necessary for full ROM but not under voluntary control
- Component- accompany another body segment movement
- Jnt play movements -passive, force against 2 jnt surfaces
Jnt Mobilization (grades)
Passive oscillatory motion or sustain stretch with force
Increase jnt fluid and decrease pain
Grades 1-4 (slow enough to stop), 5 (abrupt)
Jnt Moblization (5 ways)
Trxn/distraction- pulled
Approximation/compression- pushed together
Shear- glide
Combination forces:
Bending- compress concave, distract convex
Torsinal/rotary force- twist (compress/shear)
Ovoid vs. Seller Jnts
Ovoid- 2 bones forming convex-concave relationship
- synovial
Seller (saddle shaped)- each jnt surface is concave (one direction) and convex (one direction)
- CMC
Arthrokinematic Movements (3)
Rolling- new points on each surface make contact
Sliding/Gliding- parallel-linear movement
Spinning- rotation on a fixed point
- humeral head to glenoid fossa
- radial head on the capitulum of humerus
Convex/Concave Relationship
Convex surface moves onto concave surface in the same direction
- ankle DF/PF: tib/fib fixed, talus move
Concave surface moves onto convex surface in the opposite direction
- elbow flex/ext: humerus fixed, ulnar-radius move
Open vs. Closed chain
Open Chain- proximal segment fixed
- swing leg, arm curls, reaching
Closed Chain- distal segment fixed
- pushup/chinup, standing squats
