PURPOSE: To measure the effects of distal radius @entity893 on loading at the distal ulna. METHODS: Using an adjustable mechanism to simulate angulated and translated malalignments, clinically relevant distal @entity85 were simulated in a cadaveric model. A custom-built load cell was inserted just proximal to the native ulna head to measure the resultant force and torque in the distal ulna. Loads were measured before and after transecting the triangular fibrocartilage complex (TFCC). RESULTS: There was an increase in distal ulna load and torque with increasing dorsal translation and angulation. Combined conditions of angulation and translation increased force and torque in the distal ulna to a greater extent than with either condition in isolation. Transecting the TFCC resulted in a reduction in distal ulna load and torque. CONCLUSIONS: A progressive increase in load at the distal ulna was observed with increasing severity of @entity893 , which may be an important contributor to residual ulnar wrist @entity158 and dysfunction. However, no clear-cut threshold of @entity893 of a dorsally angulated and translated @entity174 was identified. These observations suggest that @entity85 cause @entity1833 , which increases TFCC tension and distal radioulnar joint load. Cutting of the TFCC decreased distal ulna loading, likely by releasing the articular constraining effect of the TFCC on the distal radioulnar joint, allowing the radius to rotate more freely with respect to the ulna. CLINICAL RELEVANCE: Anatomical reduction of a @entity174 minimizes the forces in the distal ulna and may reduce residual ulnar wrist @entity158 and dysfunction.

Load Transfer at the Distal Ulna Following Simulated XXXX .

@entity174 :: ('MESH:D050723', 'Disease') :: ['distal radius fracture'] @entity1833 :: ('MESH:D006212', 'Disease') :: ['articular incongruity'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain'] @entity85 :: ('MESH:D009140', 'Disease') :: ['radius deformities'] @entity893 :: ('MESH:D017760', 'Disease') :: ['malalignment']
@entity174 :: (MESH:D050723,Disease) :: ['Distal Radius Fracture Malalignment']
