Biomechanical studies of an anterior pelvic external fixation frame intended for control of vertical shear fractures.
Biomechanical testing of an experimental pelvic external fixation frame incorporating a large tubular horizontal member was carried out on formalin-fixed cadaver pelves with simulated vertical shear injuries. The device was tested with 5 mm standard and 6 mm experimental pins, and was compared to a Pittsburgh triangular (PT) frame constructed of standard Hoffmann components. Tested by vertical loading, the experimental frame with 5 mm standard pins was 1.9 times as stiff as the PT frame, and with the 6 mm experimental pins it was 2.4 times as stiff as the PT frame. Clinical trials are needed to determine efficacy in vivo.
D000368:Aged; D001696:Biomechanical Phenomena; D001858:Bone Nails; D005069:Evaluation Studies as Topic; D005592:Fracture Fixation / Q000295:instrumentation* / Q000379:methods; D005596:Fractures, Closed / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008875:Middle Aged; D008953:Models, Anatomic; D009984:Orthopedic Fixation Devices; D010384:Pelvic Bones / Q000293:injuries* / Q000503:physiopathology