The Versatile Hook Plate in Avulsion Fractures of the Hand

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Abstract

Methods

In a retrospective review of our use of hook plates in hand fractures from 2008 to 2014, a total of 63 cases were identified from the hospital data base. There were 35 cases of Mallet fractures, 16 cases of proximal interphalangeal joint fracture dislocations, 5 cases of flexor digitorum profundus avulsion fractures, 5 cases of Central slip avulsions, and 2 collateral ligament avulsions.

Results

All fractures healed well with this technique with no biomechanical failures and good functional outcome. Plates needed removal in a total of 25 cases, of which 14 were in mallet fractures. Thirteen (21%) cases suffered complications, of which the majority were again related to mallet fractures.

Conclusions

The hook plate is a simple device that can be created quite easily with readily available materials. We have extended the use of these plates to avulsion fracture fixation in the hand and found this to be a versatile technique. The risk of fragmenting the small fracture fragment is reduced because the hooks secure it and the plate is fixed in the bone. If done meticulously, joint congruence can be achieved. It has a biomechanical advantage over current methods of fracture fixation of small but important bone fragments in the hand.

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