Described by Keinbock in 1910, a radiologist in Vienna. = collapse of the lunate bone due to disruption of blood supply to the bone
To prevent bone collapse
Vascularized bone graft +/- shortening of the long bone of the forearm
A splint is applied
The drain is removed after 1 or 2 days.
Finger motion and wrist motion are encouraged.
The splint is removed to allow inspection of the wound, and the sutures are removed at 10-14 days.
A solid forearm cast is applied extending above the elbow, or a solid sugar-tong splint is used for 4 weeks. The cast is removed to evaluate the osteotomy with radiographs
Cast immobilization re applied for another 4 weeks and X rays done
Exercise and light use of the hand are encouraged throughout convalescence.