What are the zones of the hand?
Extensor Zones of the Hand
- Zone 1: Distal Interphalangeal Joint (DIPJ)
- Zone 2: Middle Phalanx.
- Zone 3: Proximal Interphalangeal Joint (PIPJ)
- Zone 4: Proximal Phalanx.
- Zone 5: Metacarpophalangeal Joint (MCPJ)
- Zone 6: Metacarpals.
- Zone 7: Wrist Joint.
- Zone 8: Distal 1/3 of the arm.
Why Zone 2 is no man’s land?
Zone 2 is also called as no man’s land. The historic derivation of “no man’s land” dates back to 14th century. It was used to describe an area outside London used for executions. Sterling Bunnel used this term in hand surgery who most probably derived it with his experience in the World War 1.
What is no man’s hand?
Hand surgery A fanciful term for the fibrous sheath of the flexor tendons of the hand, specifically in the zone from the distal palmar crease to the proximal interphalangeal joint.
What zone is flexor pollicis longus?
The thumb has its own zones 4: zone TI: from flexor pollicis longus (FPL) insertion to A2 pulley. zone TII: from A2 pulley to distal A1 pulley. zone TIII: from distal A1 pulley to carpal tunnel.
What flexor zone is carpal tunnel?
The carpal tunnel is an osteofibrous canal situated in the volar wrist. The boundaries are the carpal bones and the flexor retinaculum. In addition to the medial nerve, the carpal tunnel contains nine tendons: the flexor pollicis longus, the four flexor digitorum superficialis and the four flexor digitorum profundus.
What are the zone of thumb?
What is a swan neck?
Swan neck deformity is a hand deformity in which your fingers are bent abnormally. Your finger’s middle joint bends back more than usual. The tip of your finger is bent down. Swan neck deformity only affects your fingers. Your thumb isn’t affected, as it has one less joint than your fingers.
What is boutonniere deformity?
Boutonnière deformity is the result of an injury to the tendons that straightens the middle joint of your finger. The result is that the middle joint of the injured finger will not straighten, while the fingertip bends back.
What is Swan thumb?
What is swan neck?
What is Z deformity?
The Z deformity is one of the musculoskeletal manifestations of rheumatoid arthritis in hand: radial deviation at the wrist. ulnar deviation of the digits, and often. palmar subluxation of the proximal phalanges.
What is heberden and Bouchard nodes?
Bony bumps on the finger joint closest to the fingernail are called Heberden’s nodes. Bony bumps on the middle joint of the finger are known as Bouchard’s nodes. Bony bumps are also common at the base of the thumb. These bumps do not have a nickname, but the joint is called the CMC or carpometacarpal joint.