title: Cancellous screw fixation for subcapital femoral neck fractures.
abstract: Experience in treating 80 subcapital femoral neck fractures by AO/ASIF cancellous screws is reported. Immediate full-weight bearing was allowed routinely. The mean follow-up was 28 months. Non-union occurred in 2% and late segmental collapse in 12% of patients with undisplaced fractures. Non-union occurred in 16.7% and late segmental collapse in 30% of patients for displaced fractures. Regression of screws occurred in 30% of patients, all of which were detected within the first month after the operation. It was associated with a significantly higher risk of non-union and late segmental collapse for both undisplaced (P < 0.01) and displaced (P < 0.001) fractures.
authors.affiliation: Department of Orthopaedic Surgery, University of Hong Kong, Queen Mary Hospital.
authors.forename: K Y
authors.initials: KY
authors.lastname: Chiu
authors.forename: W K
authors.initials: WK
authors.lastname: Pun
authors.forename: K D
authors.initials: KD
authors.lastname: Luk
authors.forename: S P
authors.initials: SP
authors.lastname: Chow
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D005260:Female; D005265:Femoral Neck Fractures / Q000601:surgery*; D005500:Follow-Up Studies; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology; D011446:Prospective Studies; D012307:Risk Factors