Q44 Flexor Digitorum Superficialis

Question 0

State the attachments of the muscle

Answer 0

Proximal insertion, medial or Humeral head from the medial epicondyle of the humerus via the CET and anterior aspect of the Ulna collateral ligament and medial coronoid process
Lateral head for upper two thirds of anterior radius from radial tuberosity to insertion of Pronator Teres
Distal insertion, by four separate tendons attaches to the the palmar aspect of the middle phalanx of each digit via two lateral slips

Question 1

Give the position of this muscle

Answer 1

Largest of the superficial muscles in the anterior compartment of the forearm, lies beneath PT, PL,FCR and FCR. It lays over FDP and FPL. Has two heads

Question 2

Action of this muscle at the wrist

Answer 2

Flexion of the wrist

Question 3

Nerve supply of FDS

Answer 3

Medial nerve C 7,8, T1

Question 4

Give two functional activities in which FDS participates

Answer 4

The wrist flexion phase of gripping an object

The finger flexion phase of typing or playing the piano