Cortical screw support in femoral neck fractures. A radiographic analysis of 87 fractures with a new mensuration technique.
In 87 femoral neck fractures, operated on with 2 von Bahr screws and followed for up to 2 years, the positions of the fixating screws were determined with a new mensuration technique which compensates for the variations in hip rotation in routine radiographs. The union rate of the fractures was related to the position of the screws. A posterior placement of the proximal screw and an inferior placement of the distal screw in both the femoral head and neck improved the outcome substantially.
Lindequist
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Karolinska Institute, Department of Orthopedics, Huddinge Hospital, Sweden.
D000368:Aged; D001863:Bone Screws; D005260:Female; D005265:Femoral Neck Fractures / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D017102:Fracture Healing / Q000502:physiology; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011859:Radiography; D013813:Therapy, Computer-Assisted