What does flexor digitorum Superficialis do?
What does flexor digitorum Superficialis do?
The flexor digitorum superficialis flexes the middle phalanges of the medial four digits at the proximal interphalangeal joints. It also flexes the proximal phalanges at the metacarpophalangeal joints and the wrist joint. Flexor digitorum superficialis can flex each finger it serves independently.
What is 4 flexor digitorum Superficialis?
Flexor digitorum superficialis lies in the anterior compartment of the forearm lying superficial to flexor digitorum profundus and flexor pollicis longus, and deep to pronator teres, palmaris longus, flexor carpi radialis and flexor carpi ulnaris muscles.
What are the three heads of the flexor digitorum Superficialis?
Description: The Flexor digitorum superficialis is placed beneath the previous muscle; it is the largest of the muscles of the superficial group, and arises by three heads—humeral, ulnar, and radial.
What layer is flexor digitorum Superficialis?
It is sometimes considered to be the deepest part of the superficial layer of this compartment, and sometimes considered to be a distinct, “intermediate layer” of this compartment….Flexor digitorum superficialis muscle.
| Flexor digitorum superficialis | |
|---|---|
| Origin | medial epicondyle of the humerus (common flexor tendon) as well as parts of the radius and ulna. |
How do you test flexor digitorum Superficialis?
To test flexor digitorum superficialis, the patient is asked to flex PIP joint of one of the digits from 2nd to 5th while other remaining three digits held in extension so as to inactivate Flexor Digitorum Profundus.
How do you check for FDS?
To test the FDS tendon, MCP and PIP joints are released, distal phalanges are kept extended, and the patient flexes the finger. The PIP joint and, to a lesser degree, the MCP joint should flex. About 20% of patients are missing an FDS tendon in the little finger and thus have limited or no PIP flexion during testing.
