Biomechanical evaluation of plate osteosynthesis for AO type C2 fracture of the distal radius--a cadaver study.
An AO type C2 distal radius fracture was simulated in a cadaver model by creating a metaphyseal defect of 5 mm and an intra-articular defect of 2 mm. Five different methods of plate osteosynthesis were tested biomechanically in each of six fresh cadaveric hands. Biomechanical testing suggested that cement augmented plating plus screws in the distal fragment was the strongest. Dorsal and volar plating plus screws on both sides of the distal fragment had the same effect of restoring stiffness and load transmission pattern as fixation with double plating plus volar screws alone. Fixation with plating plus dorsal screws was significantly weaker than these three methods, and double buttress plating with no screws in the distal fragments was the weakest.
Department of Surgery (Orthopedic Division), Aga Khan University Hospital, Karachi, Pakistan.
Haroon
H
ur Rashid
Frankie
F
Leung
William
W
Lu
Boris
B
Fung
S P
SP
Chow
D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D002102:Cadaver; D005593:Fracture Fixation, Internal / Q000379:methods*; D006801:Humans; D010027:Osteotomy / Q000379:methods; D011885:Radius Fractures / Q000145:classification / Q000601:surgery*; D013314:Stress, Mechanical