4/25/2023 0 Comments Bennett fracture![]() The essential deformity of this injury is one of angulation with the concave aspect on the volar side the intact soft tissues which are to act as the ‘hinge’ for the reduction are thus to be found on the volar aspect of the base of the metacarpal. The volar ligament of the carpo-metacarpal joint remains intact and this is responsible for holding the wedge-shaped fragment of the metacarpal in its normal relation with the articular surface of the trapezium. An ill-delivered blow transmits force in the line of the thumb while in flexion, thereby shearing off the anterior part of the base of the metacarpal, and so allowing the bone to escape from the joint in a dorsal direction. As a result, the bone making up the base. The reduction of this fracture presents no great mechanical difficulty but it demands from the surgeon a fine sense of touch, and for this reason the injury could well be used as a ‘passing-out’ test for the student of closed reduction.Īs its alternative name implies, the ‘stave’ fracture is often sustained in a bout of fisticuffs. Bennetts fractures occur when an outside force pushes or pulls a partially flexed thumb backward toward the forearm. It is defined as an intra-articular two-part fracture of the base of the first metacarpal bone. However, this is no reason why a high standard of manipulative reduction should not be expected. A Bennett fracture is a fracture of the base of the thumb resulting from forced abduction of the first metacarpal. Casualty officers do not usually find it an easy fracture to reduce, and because it is also quite a common injury, one can presume that numerous cases must be treated inexpertly every year but even so, the number of cases presenting themselves with symptoms of traumatic arthritis is remarkably few. All rights reserved.O pinions vary considerably on the frequency of late symptoms following unsatisfactory reductions of a Bennett's fracture. Copyright © 2019 Wolters Kluwer Health, Inc. A Bennett fracture is an injury on the base of the first metacarpal with the avulsion of the attachment of the thick and strong volar oblique ligament and. ![]() Restoration of the joint congruency reduces pain and may prevent the development of posttraumatic osteoarthritis. We recommend this technique in active patients without trapeziometacarpal osteoarthritis who present with a painful Bennett malunion. Hardware can be removed between 3 and 6 months postoperatively after consolidation of the osteotomy. Bennett’s fracture is a severe type of fracture, which if treated inappropriately can lead to permanent disability with activities, which involve use of the thumb such as pinching. What causes a Bennett Fracture The commonest mechanism of injury is axial load on a partially flexed metacarpal. It was first described by EH Bennett, an Irish Surgeon, in 1880s. It’s 3 classic features include an oblique, intra-articular dorsal-volar fragment. The osteotomy is fixed with 3 interfragmentary screws, and the joint is immobilized for 2 weeks before passive mobilization is initiated. A Bennett Fracture is a fracture-subluxation of the CMCJ. A closing wedge osteotomy with excision of the malunion site is then performed to restore joint congruency. ![]() The joint is exposed through an anterolateral approach, and the malunion is marked with K-wires under fluoroscopic control. We present a new technique to correct the intra-articular gap and restore joint congruency in the event of a symptomatic Bennett malunion with a gap of at least 2 mm. If a fracture is missed at initial presentation, it may heal with an intra-articular gap, leading to joint incongruency and a painful trapeziometacarpal joint. Bennett’s fractures are the most common fractures around the trapeziometacarpal joint but require specialized radiographs to be correctly diagnosed.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |