Contents
Anatomy
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 hypothenar muscle group
Position
- Superficial
Origin
- Flexor retinaculum
- Os hamatum
Insertion
- Baes of proximal phalanx of the little finger, ulnar side
Main function
- Little finger MCP
- Flexion
Nerve innervation
- Segmental
- C8-Th1
- Peripheral
- Ulnar nerve
Arterial supply
- Ulnar artery
Palpation
- Patient position
- Sitting or supine
- Place your fingers laterally on the hypothenar eminence
- Ask the patient to perform a flexion movement with the little finger at the MCP-joint
- Feel for the contraction of the muscle
Strength test
- Patient position
- Sitting or supine
- Ask the patient to hold the little finger in a flexed position of the MCP-joint, while keeping the IP-joint extended
- Give resistance towards the palmar surface of the proximal phalanx in direction of extension, so that the patient is giving force towards flexion