The value of washers in cannulated screw fixation of femoral neck fractures.

摘要: Background: Given the limited evidence to support technical aspects of screw placement for treatment femoral neck fractures, we conducted an observational study evaluate demographic and radiographic variables associated with fixation failure. Methods: Eligible patients fractures were treated multiple cannulated screws across three academic centers during a 6-year period. The following evaluated their predictive value failure: age, gender, fracture type, presence comminution, total number screws, absence washer, configuration, reduction quality, distance most inferior neck, alignment. Variables separately in multivariable regression model. Results: Eighty included study. overall failure rate was 30%. We identified four These lack washers (odds ratio [OR], 11.2; p = 0.03), imperfect quality (OR, 9.7; < 0.01), age greater than 75 years 5.1; 0.04), displaced versus undisplaced type 3.8; 0.01). accounted 43% variability (R 2 0.43). All other including inferior/ medial found be not significant. Conclusion: This confirms previous findings literature that increased poor increase risk Contradictory current belief, there no significant association between inferior/medial cortex A novel finding present is use significantly decreases