Radiographic Parameters Associated with Pain Following Total Hip and Surface Arthroplasty

• Published in: The Journal of arthroplasty 2015-03, Vol.30 (3), p.495-501
• Main Authors: Nam, Denis, MD, Sauber, Timothy J., MD, Barrack, Toby, BA, Johnson, Staci R., MEd, Brooks, Peter J., MD, Nunley, Ryan M., MD
• Format: Article
• Language: English
• Subjects: acetabulum; Acetabulum - diagnostic imaging; Acetabulum - surgery; Adult; Arthroplasty, Replacement, Hip - adverse effects; femoral stem; Femur - diagnostic imaging; Femur - surgery; hip arthroplasty; Hip Joint - diagnostic imaging; Hip Joint - surgery; Hip Prosthesis; Humans; Joint Diseases - diagnostic imaging; Joint Diseases - surgery; Orthopedics; pain; Pain, Postoperative - diagnostic imaging; Pain, Postoperative - etiology; Prospective Studies; radiographs; Radiography; Surveys and Questionnaires
• ISSN: 0883-5403; 1532-8406
• DOI: 10.1016/j.arth.2014.10.005

Abstract Pain following total hip arthroplasty (THA) and surface arthroplasty (SRA) remains a significant source of patient dissatisfaction. Two hundred twenty-four SRA and 196 THA patients completed a pain drawing questionnaire and postoperative radiographic measurements of component positioning were performed. In the SRA cohort, 11 of 21 patients (52%) with acetabular uncoverage of ≥5 mm versus 43 of 147 (29%) with acetabular uncoverage of ≤4.9 mm reported groin pain ( P =.03). In the THA cohort, an increased distal-third canal fill ratio and a lower canal calcar ratio trended towards a higher incidence of thigh pain ( P =.10 and .06), while a decreased mid-third canal fill ratio was associated with increased severity of thigh pain ( P =.04). This study identifies associations between radiographic findings and pain following THA and SRA.