2024年9月7日 · Volar plate avulsion injuries are a type of avulsion injury. The volar plate of the proximal interphalangeal (PIP) joint is vulnerable to hyperextension injury, in the form of either a ligament tear or an intra-articular fracture. The volar plate forms the floor of the PIP joint separating the joint space from the flexor tendon sheath.

2014年3月24日 · A, Sagittal intermediate-weighted fat-saturated MRI (TR/TE, 2000/24) of thumb shows volar (white arrowheads) and dorsal (black arrowheads) plates of metacarpophalangeal and interphalangeal joints.

2016年7月22日 · Disruption of the restraining structures on the volar surface of the joint between the metacarpal and proximal phalanx of the thumb may result in excessive joint motion and abnormal hyperextension.

A volar plate injury happens when your finger joint is bent too far backwards (hyperextension). This causes the ligament and cartilage tissue on the palm side of your joint (volar plate) to tear or become detached from the bone.

Volar plate injuries of interphalangeal joints of the thumb often occurs from forced sudden hyperextension mechanism, resulting in severe restriction of grip function. The volar plate helps maintain stability of the interphalangeal joint in the anteroposterior plane and prevents interphalangeal joint hyperextension.

The thumb volar plate (also referred to as volar ligament, palmar plate, or palmar ligament) is a thick ligament on the underside of the metacarpophalangeal (MCP) joint of the thumb, which reinforces the joint capsule, enhances joint stability, and limits hyperextension [1, 2].

2018年4月29日 · Carpal tunnel thumb injury symptoms include pain, tingling, weakness or numbness in the thumb and possibly the index finger, middle finger and the medial half of the ring finger. These symptoms usually escalate at night and they can radiate all the way up the arm and into the shoulder.

Volar plate avulsion fracture (Figure 7) occurs after hyperextension injury to the PIP joint, often from a ‘jamming’ injury during ball sports. This type of fracture is common but easily missed 2 and, unfortunately, permanent loss of PIP joint function results from mismanagement.

Volar dislocations of the metacarpophalangeal (MCP) joint of the thumb rarely occur. Dorsal dislocations of the MCP and carpometacarpal joint of the thumb is more common than volar dislocations. 1, 2, 3 In the English literature only twenty six cases have been reported to …

The strong volar oblique ligament is essential as a stabilizing unit of the base of the thumb metacarpal: it inserts into the articular margin of the volar beak on the ulnar aspect of the first metacarpal base.