MRI of the Thumb: Anatomy and Spectrum of Findings in ... - AJR
网页2014年3月24日 · The first annular pulley is at the level of the metacarpophalangeal joint, and the second annular pulley is at the level of the interphalangeal joint. The oblique annular pulley is located at the level of the proximal phalanx, and a variable annular pulley is located at the base of the proximal phalanx ( Fig. 6 ).
Metacarpophalangeal (MCP) joints: Bones and ligaments - Kenhub
网页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.
MCP Joint Arthritis - Hand - Orthobullets
网页5 天之前 · thumb MCP joint is reinforced by extensor pollicis longus (EPL), abductor pollicis brevis (APB), adductor pollicis and extensor pollicis brevis (EPB) adductor pollicis inserts on ulnar sesamoid
The Metacarpophalangeal Joint - Ligaments - TeachMeAnatomy
网页2023年4月15日 · Metacarpophalangeal Joint Skier’s Thumb. Skier’s thumb refers to an injury of the ulnar (medial) collateral ligament of the 1st metacarpophalangeal joint. It typically occurs when the thumb is forcibly abducted.
MCP Joint Arthritis - American Society for Surgery of the Hand
网页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.
First metacarpal bone - Wikipedia
网页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 .
First Metacarpal: Definition, Location Anatomy, Diagram
网页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].
Ulnar Collateral Ligament Injury (Gamekeeper's Thumb)
网页2024年2月1日 · Ulnar collateral ligament injury of the thumb, also known as skier's thumb or gamekeeper's thumb, is an injury of the ulnar collateral ligament of the first metacarpophalangeal joint. Injuries are often sustained by activities or traumatic events that force the thumb into extreme abduction or hyperextension.
Anatomy, Shoulder and Upper Limb, Hand Metacarpal Phalangeal Joint
网页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.
Anatomy, Shoulder and Upper Limb, Metacarpophalangeal Joints
网页2023年8月14日 · The thumb MCP joint is a hinge joint that allows up to 80 to 90 degrees of flexion with minimal extension, adduction, or abduction. The MCP joints of the 2 through 5 digits are shallow ball and socket joints which allow for flexion, extension, abduction, adduction, and limited circumduction.