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At the time the article was created Kieran Kusel had no recorded disclosures.View Kieran Kusel's current disclosures
At the time the article was last revised Daniel J Bell had no recorded disclosures.View Daniel J Bell's current disclosures
Each joint occurs between the round head of the metacarpal and the shallow base of the proximal phalanx 1, 2.
Each joint is enclosed by a fibrous capsule which attaches to the margins of the articular surfaces and is lined by a synovial membrane 2.
- two collateral ligaments
- strengthen the capsule on each side and pass from the head of the metacarpal to the base of the phalanx 1, 2
- palmar ligament (volar ligament)
- a thick, fibrocartilaginous plate that connects the collateral ligaments and attaches firmly to the base of the proximal phalanx and attaches loosely to the head of the metacarpal 1, 2
Deep digital arteries from the superficial palmar arch
Digital nerves from the ulnar and median nerves