proximal phalanx


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Related to proximal phalanx: Distal phalanx

proximal phalanx

Any phalanx that articulates with a metacarpal or metatarsal bone.
See also: phalanx
References in periodicals archive ?
The superficial insertion of the adductor mechanism is the extensor expansion via the adductor aponeurosis; the deep insertion extends to the palmar aspect of the proximal phalanx via the ulnar sesamoid of the metacarpophalangeal joint.
Rupture of the proper ulnar collateral ligament most often occurs at the ligament's distal insertion on the base of the proximal phalanx.
For a patient with a suspected ulnar collateral ligament injury, physical examination should commence with observation of the thumb metacarpophalangeal joint for deformities, including apex ulnar deviation and palmar subluxation of the proximal phalanx.
Concomitant injuries may include avulsion fractures of the base of the proximal phalanx, metacarpal fractures, and simultaneous instability of the metacarpophalangeal and carpometacarpal joints.
4,19,49) The ulnar collateral ligament may also undergo direct repair to the periosteal tissues at the base of the proximal phalanx of the thumb.
7,57,59) Glickel and coworkers presented a retrospective review of 26 patients whose surgery involved passing a free tendon graft through two gouge tracks in the proximal phalanx and one through the metacarpal (Fig.
5 mm drill holes are made in the proximal phalanx 5 mm from the joint at the 12:30 and 5:30 positions.
The effects of transection and reconstruction of the ulnar collateral ligament complex on the position of the proximal phalanx of the thumb during simulated tip pinch.
Breakdancer's thumb-partial rupture of the ulnar collateral ligament with a fracture of the proximal phalanx of the thumb.
Outcome of avulsion fractures of the ulnar base of the proximal phalanx of the thumb treated nonsurgically.
Lateral subluxation of the proximal phalanx occurs on the MT head.
The proximal articular surface of the proximal phalanx forms an angle with the longitudinal axis of the proximal phalanx, the proximal phalangeal articular angle (PPAA).

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