Dislocations of the
carpal bones
Anatomy
The carpal bones are a group of eight, irregularly shaped bones that
make up the wrist; they connect the hand to the forearm. They are organized
into two rows: proximal and distal.
Scaphoid , Lunate,
Triquetrum and Pisiform make up the
proximal row.
Trapezuim, Trapezoid, Capitate
and Hamate make up the distal row.
Risk factors
This injury happens in high energy trauma; the wrist is bent backwards.
(eg: car crash accident, falling down on stretched hand)
Signs and symptoms
1.
Pain, swelling and
deformity of the wrist and hand .
2.
Numbness of the hand and
fingers if the dislocated bone is compressing the carpal tunnel ( carpal tunnel
syndrome ) .
3.
Bone ischemia with
resultant osteoarthritis and eventually loss of function.
Examination and
diagnosis
If you suspect carpal bone dislocation, go the emergency department
After taking your medical history and detailed explanation of what
happened, your doctor will order x-rays then he will examine your rest to
evaluate damage and possible complications. Then, your doctor will decide the
best treatment for you.
Treatment
*Closed Reduction
*Open reduction, ligament repair and fixation .
Recovery might take several months
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