The effect of the wafer procedure on pressure in the distal radioulnar joint.

Purpose: To investigate the effect of the wafer procedure on pressure within the distal radioulnar joint.

Methods: The effect of increasing transverse distal ulnar head resection with preservation of the ulnar styloid was evaluated in 4 fresh frozen cadaver arms. Specimens were tested in neutral rotation. A standard transaxial load was applied from the radius to the ulna and the distal radioulnar joint intra-articular pressure was evaluated.

Results: Increasing amounts of distal ulnar resection led to a linear increase in pressure in the distal radioulnar articulation.

Conclusion: The wafer procedure leads to an increase in pressure in the distal radioulnar joint that may lead to the early onset of osteoarthritis.