What is MCP flexion?
The metacarpophalangeal (MCP) joints are multiaxial condyloid joints capable of flexion, extension, and some lateral motion and circumduction. The cam-shape of the metacarpal heads leads to relaxation of the collateral ligaments in extension, permitting adduction and abduction of the finger.
What does MP stand for in hand?
The large joints in the hand at the base of each finger are known as the metacarpophalangeal (MP, or MCP) joints. They act as complex hinge joints and are important for both power grip and pinch activities.
What flexes the MP joint?
The lumbrical muscles arise from the flexor digitorum profundus (FDP) tendons in the palm and join the radial lateral band at the middle of the proximal phalanx. The lumbricals extend the PIP and distal IP (DIP) joints and assist in flexing the MCP joints.
What are MCP joints?
The metacarpophalangeal joint or MP joint, also known as the first knuckle, is the large joint in the hand where the finger bones meet the hand bones. The MCP joint acts as a hinge joint and is vital during gripping and pinching.
What is normal MCP extension?
It is usual for the ROM of the MCP joints to fall within 90° of flexion to 45° of extension (American Academy of Orthopaedic Surgeons, 1965).
What does MCP stand for in medical terms?
The metacarpophalangeal (MCP) joints are located where the hand’s fingers and thumb meet the palm. They are commonly known as large knuckles. In medical terminology, the MCP joints are synovial joints located between the metacarpals and proximal phalanges.
What are MCP and PIP joints?
The joints involved most frequently are the proximal interphalangeal (PIP) and metacarpophalangeal (MCP) joints of the hands, the wrists, and small joints of the feet including the metatarsophalangeal (MTP) joints. The shoulders, elbows, knees, and ankles are also affected in many patients.
What does PIP and DIP mean?
“proximal interphalangeal joints” (PIJ or PIP), those between the first (also called proximal) and second (intermediate) phalanges. “distal interphalangeal joints” (DIJ or DIP), those between the second (intermediate) and third (distal) phalanges.
What is MCP and PIP joints?
Where is the MCP joint located?
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.