Anatomic and Biomechanical Study of the Forearm Interosseous Membrane, Distal Oblique Bundle, and Triangular Fibrocartilage Complex: Role in Galeazzi Fracture Dislocation

PurposeThe purpose of this study was to measure distal radioulnar joint (DRUJ) dislocation and displacement associated with sequential sectioning the different bands interosseous membrane triangular fibrocartilage complex in simulation a Galeazzi fracture dislocation.MethodsTwelve fresh-frozen cadaver forearms were dissected. We examined anatomy function forearm membrane. Each then mounted onto biomechanical wrist device. In control group, radial osteotomy performed degree DRUJ progressive loads measured. addition osteotomy, group 1, central band (CB) sectioned; 2, CB, membranous portion membrane, oblique bundle 3, bundle, sectioned.ResultsThe (mm) at 25 N, 50 75 N recorded. applying resulted an average 4.3, 5.9, 7.9 mm, respectively. 5.2, 5.7, 6.9 6.2, 8.1, 9.9 Our showed correlation between increase load applied same injury (P = .001). statistically increased compared other groups .04).ConclusionsMigration radius under implies disruption both CB complex. The by itself does not seem have relevant role DRUJ.Clinical relevanceThis provides insights into stability DRUJ, which can contribute better understanding fracture-dislocations. dislocation. Twelve sectioned. .04). Migration DRUJ.