The metacarpophalangeal joint (MCPJ) is a diarthrodial joint that is critical for functional hand motion and is based on an articulation of the head of the metacarpal and the proximal phalanx. The joint allows for extension, flexion, abduction, adduction, and …

Fracture dislocations of the multiple carpometacarpal joints [CMCJ] of the fingers are uncommon injuries that can significantly compromise hand function and durability if managed sub-optimally.

following anatomical factors, MCPJ being a condyloid joint with metacarpal head being narrow dorsally and broad in volar aspect and thus increasing the contact area with the base of the proximal phalanx as the joint is flexed. The capsule of the MCPJ is thick along the sides extending from the neck of

Maximum synovial thickness was most often detected at the radial side of the 2nd MCPJ and 3rd MCPJ and ulnar side of the 4th MCPJ of both hands which is significantly higher (p < 0.05) in RA patients compared to healthy individuals. With high specificity (96%) and sensitivity (90%) the optimum cut-off value to distinguish RA patients and ...

Type I locking of the metacarpophalangeal joint (MCPJ) is rare and is characterized by loss of extension at the MCPJ with full flexion of all joints of the digit. The condition is usually seen in the index and middle fingers when the normal osseous prominence or degenerative osteophytes of the radial condyle of the metacarpal head catches the ...

Forty two fingers, in 38 patients (aged 15- 45 years), with simple complete extensor tendon injuries in the MCPJ area, were identified and operated by a single surgeon.

2023年5月11日 · The accessory collateral ligament inserts on the volar aspect of the proximal phalanx and volar plate and is volar to the proper collateral ligament. The UCL is critical for grip strength, pinch, and stability of the MCPJ. Additionally, both the UCL and RCL help provide dorsal support to the MCPJ.

2024年8月22日 · Acute complete ruptures of the ulnar collateral ligament (UCL) of the thumb metacarpophalangeal joint (MCPJ) are common and account for approximately 50 in 100,000 presentations to emergency departments (EDs). 1 These injuries frequently result in pain and dysfunction, which can be persistent in a minority of cases in which there may also be ...

Objectives: The purpose of this in vivo study was to compare results of extensor tendon repair, using roll stitch and core suture techniques. Patients and Methods: Forty two fingers, in 38 patients (aged 15- 45 years), with simple complete extensor tendon injuries in the MCPJ area, were identified and operated by a single surgeon.

2013年2月22日 · In order to improve our understanding of equine metacarpophalangeal joint (MCPJ) biomechanics and potential aetiologies of sagittal P1 fractures, the study objectives were to quantify P1 bone strains, collateromotion and axial rotation during MCPJ extension under controlled loading circumstances.