2018年8月2日 · The first metacarpal (1st Metacarpal) is the metacarpal or palm bone associated with the thumb and is the shortest, and most mobile of all the five metacarpal bones [1]. Being the metacarpal of the thumb, it is located distally on the radial side of the human palm, between the distal carpal row, and the first proximal phalanx [12].

The first metacarpal bone or the metacarpal bone of the thumb is the first bone proximal to the thumb. It is connected to the trapezium of the carpus at the first carpometacarpal joint and to the proximal thumb phalanx at the first metacarpophalangeal joint.

2023年10月30日 · The metacarpophalangeal joints (MCP) are a collection of condyloid joints that connect the metacarpus, or palm of the hand, to the fingers. There are five separate metacarpophalangeal joints that connect each metacarpal bone to the corresponding proximal phalanx of each finger.

2025年1月2日 · Metacarpal Fractures are the most common hand injury and are divided into fractures of the head, neck, or shaft. Diagnosis is made by orthogonal radiographs the hand. Treatment is based on which metacarpal is involved, location of the fracture, and the rotation/angulation of the injury.

2023年7月28日 · Base of Thumb metacarpal fractures can be extra-articular fractures, Bennett fractures (partial intra-articular), or Rolando fractures (complete intra-articular). Diagnosis can be made by orthogonal radiographs of the thumb.

2023年10月24日 · The 1st MCP joint assists in flexing the thumb in opposition so the hand can grasp objects and perform fine motor tasks. Unlike the other digits of the hand, the thumb joint only has one IP joint. However, the 1st MCP joint has a broader range of motion than the others.

2025年1月13日 · Basilar Thumb Arthritis, also referred to as trapeziometacarpal (TMC) arthritis, is a common degenerative condition caused by attenuation of the volar beak and dorsoradial ligaments, leading to joint subluxation and cartilage degeneration of the trapeziometacarpal joint.

MCP joint arthritis is the wearing away of cartilage in the metacarpophalangeal joint, also known as the knuckle. It causes pain, loss of motion, and swelling.

2025年2月13日 · 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 …

2010年10月30日 · Steroid injection of 1st CMC joint. Needle at about a 45-degree angle. Distract the thumb to open the joint space. Indications. First carpometacarpal (CMC) joint painful osteoarthritis. ICD-9 codes: 715.14 “osteoarthrosis, localized, primary, hand” 719.44 “pain in joint, hand” ICD-10 codes: