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20 Cards in this Set
- Front
- Back
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What are the joints of the elbow and forearm and what are their joint functional, structural types and sub-types? |
1) Humeroulnar - diarthrosis, synovial/hinge joint 2) Humeroradial - same joint type 3) Radioulnar - sub-type is pivot, otherwise the same |
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If a muscle has OIs only on the humeral-ulnar joint what actions can it produce? What about the radioulnar joint? Humeralulnar? |
Humeral-ulnar joint produces actions at the elbow. Radioulnar produces actions at the forearm. Humeralulnar produces both elbow and forearm actions. |
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What types of joints are the proximal, middle, and distal radioulnar joints? |
Proximal radioulnar is a diarthrodial (movable) joint. The middle & distal radioulnar joint are synarthrodial/synostosis (immovable) joints. |
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Why are there six ligaments for the forearm but only 2 for the elbow? |
Because the forearm has less bony support. |
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What are the two ligaments and their function for the elbow? |
1) The Radial Collateral (positioned laterally - prevents excessive medial movement) 2) The Ulnar Collateral (positioned medially - prevents excessive lateral movement). |
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What are the two proximal ligaments and their function of the forearm? |
1) Annular - holds the radius against the radial notch. 2) Quadrate - reinforces inferior aspect of joint capsule and holds radius against the radial notch. |
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What are the two medial ligaments and their function of the forearm? |
1) Oblique Cord - prevents separation of radius & ulna 2) Interosseous Membrane - stabilizes proximal & distal radioulnar joints and prevents separation |
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What are the two distal ligaments and their function of the forearm? |
1) Anterior & Posterior Radioulnar Ligaments - stabilize distal radioulnar joint. |
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What bones articulate at the Wrist Complex? |
The Radius and the Carpals |
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Name the 8 carpal bones |
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Name and number the bones and joints |
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What are the two main joints of the wrist complex, their classifications & movements possible at these joints? |
1) Radiocarpal - condyloid/ellipsoid joint - flexion/extenion & radial/ulnar deviation 2) Mid-Carpal - compound joint - flexion extension & gliding for deviation |
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What type of joint is an intercarpal joint and what are its movements? |
1) Plane joint 2) Sliding, gliding |
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Name the classification and movements possible of each CMC joint |
CMC 1 - saddle joint: flexion, extension, abduction, adduction, opposition and circumduction. CMC 2-3 - irregular joint: immovable CMC 4 - irregular joint: 10 degrees flex/exten. CMC 5 - irregular joint: 20 degrees flex/exten, abd/add & opposition. |
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Name the classification of the MCP/MP Joints and the movements possible |
1 MCP - restricted condyloid (functions as hinge joint): flex/exten 2-5 MCP (knuckles) - condyloid: flex/ext, abd/add, & circumduction |
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What is the classification and movements possible in the interphalangeal joints? |
All Hinge joints = Flex/ext |
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How does the wrist affect the other joints of the hand? |
It controls the length-tension relationship |
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Name the ligaments of the wristand their functions |
1) Palmar (volar) Radiocarpal - limits extension 2) Dorsal // - limits flexion 3) Ulnar Collateral - limits radial dev. 4) Radial Collateral - limits ulnar dev. |
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What bone gets dislocated most? Why? Which bone is most likely to fracture? What is that called? |
The Lunate. It is central to the impact when the hands are extended when falling. The distal radius is most likely to fracture = Colles' fracture. |
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What wrist position and grip is best for power activities? Which is best for precision activities? |
1) Wrist in slight flexion with ulnar deviation and a palmar grip. 2) Wrist in slight extension with radial deviation and a precision grip. |
