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Flexoris digitorum superficialis




Flexor digitorum superficialis - anterior view
Flexor digitorum superficialis - medial view

General information

  • This section is strictly limited to anatomy, you might be looking for clinical relevant information which is found under the clinical chapters -- muscles section, click here to go to that page
  • Is a part of the lower arm's anterior superficial muscle group


  • Deep


  • Medial epicondyle humerus
  • Processus coronoideus ulna
  • Anterior part of radius
    • Proximal 1/2


  • Middle phalanges of 2-5 fingers, anterior surface

Main function

  • Wrist
    • Flexion
  • MCP
    • Flexion
  • PIP
    • Flexion

Secondary function

  • Elbow
    • Flexion

Nerve innervation

  • Segmental
    • C7-Th1
  • Peripheral
    • Median nerve

Arterial supply

  • Ulnar artery
  • Radial artery

Palpation of distal tendon

  • Patient position
    • Sitting or supine
  • Place a hand distally on the lower arm's anterior aspect
  • Ask the patient to make a fist
  • Ask the patient to maintain the pressure of the fist
  • Give resistance towards extension of the patient's wrist so that the patient is giving force towards flexion
  • Palpate the tendon between the palmaris longus and flexor carpi ulnaris tendons at the anterior surface of the wrist

Strength test

  • Patient position
    • Sitting or supine
  • Ask the patient to hold the wrist in a neutral position with the PIP-joints in a flexed position
  • Give resistance in the direction of extension at the middle phalanx on the palmar side of the fingers so that the patient is giving force towards flexion