The TMC joint is at the base of the thumb metacarpal
3,16) The articular surfaces of the thumb metacarpal
base and trapezium resemble reciprocally interlocking saddles, allowing for flexion-extension, abduction-adduction, and rotation.
Primary bony tumors of the thumb metacarpal
are a rare and challenging problem .
Phalangization of the thumb metacarpal
is indicated if less than half of the proximal phalanx is present.
To that end, thumb metacarpal
fractures can be immobilized in a functional position.
However, only the thumb metacarpal
movement was quantified in terms of distance within a plane and flexion-extension and abduction-adduction angles.
He said, 'This was a severe fracture that involved the joint at the base of the right thumb metacarpal
The FPL inserts on the volar thumb distal phalanx base, APL on the thumb metacarpal
base, EPB on the thumb proximal phalanx base, and the EPL on the thumb distal phalanx base.
An incision is made extending over the thumb metacarpal
along the radial insertion of the thenar muscles, curving proximally and ulnarly along the distal wrist crease to the FCR tendon.
A biomechanical study was done to determine thumb metacarpal
base stability after basal joint reconstruction.
The examination of a patient with an acute fracture will reveal tenderness on palpation in the anatomic snuffbox, pain on palpation of the distal tuberosity volarly, pain on axial compression of the thumb metacarpal
(scaphoid compression test), decreased range of motion, and swelling.