Muscles
3 muscles that are responsible for flexing the fingers, also assist in flexing the wrist. Name 1 (or all for brownie points) of these muscles
Secondary wrist flexors
1. FDP
2. FDS
3. FPL
The mid carpal joint is located between ____ and _____
The proximal and distal rows of the carpal bones
which two lumbricals are innervates by the ulnar nerve?
The two medial lumbricals
an intrinsic minus position would be a lack of functioning of which group of muscles?
Intrinsic
Capitate
Intrinsic
The ____ joint is flexed by the lumbricals
MCP
which extrinsic thumb muscle is innervates by the median nerve?
FPL
In an intrinsic + position the DIP and PIP are in what position?
Extension
The MCP joints are part of which extensor zone?
Zone V (odd zones go over joints)
The _____ is considered the “workhorse” of the wrist
ECRB
What is closed packed position of the radial ulnar joint
Extension with slight ulnar deviation
Injury to this nerve would cause paralysis of the hypothenar muscles
Ulnar
We splint with the MCP in a close packed position to reduce the likelihood of what?
Tightened within the collateral ligaments
The extensor retinaculum wraps around what landmark of the ulna?
Styloid process
What two muscles make up the 4th dorsal compartment?
ECD, EI
The distal radioulnar joint allows for what movements
Forearm pronation and supination
Which of the following muscles is not innervated by the radial nerve?
-APL
-EPB
-EI
-APB
-APB - median
The volar plate is positioned where?
On the volar surface between the proximal and middle phalanx
Where is the TFCC located?
Between the distal end of the ulna and the ulnar side of the carpal bones
Where do the ECRL, ECRB, and ECU all originate?
The lateral epicondyle of the humerus
the lunate articulates inferiority with the ___
Hamate
What nerve is responsible Extension of the 2nd finger at the MCP
Median
Tenodesis
The most rigid part of the longitudinal arch is where?
At the proximal end linked to the carpals