KIN428 Lecture Notes - Lecture 14: Carpal Tunnel, Carpal Bones, Triquetral Bone

126 views7 pages

Document Summary

2015-12-16 (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Transmit force (dist prox + vice versa: 2. Final (major) kinetic positioning of the kinematic chain. Where the carpals and radius and ulna meet. Unique: no motor control for each joint/articulation. Relies on: ligamentous action (act only in tension, carpal contact surfaces (complex gliding) Crossing carpal rows: radiocapulate (keep distal row bound to the radius)(act as sling for proximal row) Within carpal rows: proximal (most important is lunate) interosseous (scapholunate)(lunate triquetral). Limit rotations within row (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1: distal (most important is capitate) hamate, capitate. Ulnar deviation: forces are oblique and not and efficient energy transfer. Bad transmission because not direct line of force. Radial deviation: force transmits directly (vectors aligned) Palmar flexion: midcarpal capitate compresses the lunate extends. Extension (dorsiflexion): radiocarpal radiolunate locks carpal rows together. Three links: radius prox (lunate)/dist (capitate) rows. Visi (volar flexion) and disi (dorsiflexion) intercalary collapse.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents