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Radiographic assessment of cup migration in bipolar hip arthroplasty: intra-observer and interobserver errors and
1Department of Orthopaedic and Accident Surgery, Royal Liverpool Hospital, United Kingdom.
Archives of Orthopaedic and Trauma Surgery
|January 1, 1992
Abstract:
Statistical methods were used to calculate the possible observer error in measuring cup migration in bipolar hip arthroplasty from follow-up radiographs. Finding the "tolerance limits" by such methods helped in assigning the true significance of any observed change.