Related Experiment Video
Updated: Jun 30, 2026

Metacarpal Small Incision for Carpal Tunnel Syndrome
Published on: April 5, 2024
Pressure changes in the carpal tunnel with movement of the pisiform bone
Abstract:
Seven fresh cadaveric forearms were studied to investigate the effects of medial and lateral positioning of the pisiform bone on pressure within the carpal tunnel. The wick catheter, a device used to transmit interstitial fluid pressure, was inserted into the carpal tunnels of the cadavers. Pressures in the tunnel with the pisiform in a resting position, medial position, and lateral position were measured via a water manometer. A significant increase in pressure was noted between the resting position and both the medial and lateral positions ( p = 0.001). No significant difference was found between the medial and lateral positions ( p > 0.05). Findings suggest that the use of movement of the pisiform as a conservative treatment in carpal tunnel syndrome is questionable. J Orthop Sports Phys Ther 1982;4(1):47-50.
Related Concept Videos
Muscles of the Forearm that Move the Hand and Fingers
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Bones of the Upper Limb: Ulna
Bones of the Upper Limb: Radius
The radius has a nail-shaped head, and a short...
Muscles that Move the Forearm
Forearm Flexors
The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
Bones of the Upper Limb: Humerus
