The metacarpal bones are the long bones in the hand in between the wrist and the fingers. You have 5 metacarpals, the thumb being number 1, the little finger number 5. Christopher has fractured his 4th metacarpal, meaning the ring finger metacarpal.
What is a central slip injury?
The central slip is part of the extensor tendon that straightens the proximal interphalangeal joint (PIP joint). It is often injured from joint dislocation or forced flexion of the PIP joint. The tendon can tear away from the bone or pull a small fracture fragment with it.
It is quite likely that you will have to visit a hand therapist at some point in your life, but what exactly is hand therapy? Let’s take a look.
The wrist consists of 8 carpal bones, 2 of them being the scaphoid and the lunate. The scapholunate ligament holds the scaphoid and lunate bone together.
DeQuervain’s is a condition where the two tendons that insert into the base of the thumb, the abductor pollicis longus (APL) and extensor pollicis brevis (EPB), become inflamed inside of the sheath.
A mallet finger is when the terminal extensor tendon avulses from the distal phalanx with or without a piece of bone, resulting in an inability to straighten the tip of the finger. A mallet injury can be classified into:
• A bony mallet, when the tendon comes off attached to a bony fragment called an avulsion fracture
• A tendinous mallet, where the tendon avulses by itself
Osteoarthritis is common at the carpometacarpal (CMC) joint of the thumb (base of thumb). Osteoarthritis is wear and tear degeneration of the joint.