The metacarpophalangeal joints (MCP) are situated between the metacarpal bones and the proximal phalanges of the fingers. [1] . These joints are of the condyloid kind, formed by the reception of the rounded heads of the metacarpal bones into shallow cavities on the proximal ends of the proximal phalanges. [1] .

Apr 15, 2023 · Each metacarpophalangeal joint has two planes of motion. It allows for flexion, extension, abduction, adduction, circumduction and limited rotation of the digit. All of the movements at the joint are produced by muscles of the forearm and hand. Flexion – produced by flexor pollicis brevis and longus.

MCP joint arthritis is most common in the thumb and index fingers due to the stress of pinching. The different joints of the hand are shown in Figure 1. Arthritis means joint inflammation and is a word that is often used to describe pain or a problem at a joint. Arthritis occurs when there is a loss of cartilage.

Oct 30, 2023 · There are five separate metacarpophalangeal joints that connect each metacarpal bone to the corresponding proximal phalanx of each finger. Each metacarpophalangeal joint is formed by the convex heads of the metacarpal bones which are received by the concave bases of the proximal phalanges.

Feb 13, 2025 · The metacarpophalangeal (MCP) joints are the knuckle joints where the metacarpal bones of the hand meet the proximal phalanges of the fingers. These synovial joints allow flexion, extension, abduction, adduction, and …

Sep 8, 2024 · A metacarpophalangeal dislocation, or MCP dislocation, is a dislocation of the metacarpophalangeal joint, usually dorsal, caused by a fall and hyperextension of the MCP joint. Treatment is closed reduction unless soft tissue interposition blocks reduction, in which case open reduction is needed.

Oct 2, 2024 · Metacarpophalangeal (MCP) Joint arthritis typically presents with pain, swelling, and limited motion. Inflammatory etiology is much more common than osteoarthritis. in patients with osteoarthritis, a tendon-splitting approach can be used.

Feb 24, 2025 · Metacarpophalangeal (MCP) joints are condyloid synovial joints between the metacarpal bones and proximal phalanges of the hands. This article is focused on the metacarpophalangeal joints of the fingers. Each joint occurs between the round head of the metacarpal and the shallow base of the proximal phalanx 1,2.

Complex dorsal metacarpophalangeal joint (MCPJ) dislocations are uncommon injuries that mainly affect the index finger and are typically caused by a fall on an outstretched hand. It is exceptional for complex MCPJ dislocation to coexist with a distal fracture of the corresponding metacarpal bone.

Jul 25, 2024 · Collateral ligament injuries, comprising 39 % of MCPJ injuries, are explored comprehensively. The article introduces a classification system for radial collateral ligament (RCL) injuries and discusses conservative and surgical management strategies based on the severity of …