Stern: Patients with a Z deformity have flexion-adduction posture of the thumb metacarpal and compensatory hyperextension of the metacarpophalangeal (MCP) joint.

The flexor pollicis brevis flexes the metacarpophalangeal (MCP) joint of the thumb. The flexor digitorum profundus flexes the distal interphalangeal joints of digits 1 to 4, and the flexor ...

Another possible cause for your thumb pain may be MCP joint strain, which is described as pain, swelling or tenderness on either side of the MCP joint associated with loss of full flexion (ability ...

Jerry I. Huang, MD, and colleagues elected to perform metacarpophalangeal (MCP) pyrocarbon arthroplasty on the ring finger to provide pain relief while maintaining News News CME CME ...