Patient-specific guides improve hip arthroplasty surgical accuracy

Adeel Aqil, Sanya Patel, Anatole Wiik, Gareth Jones, Alex Bridle and Justin P. Cobb

Computer Methods in Biomechanics and Biomedical Engineering, 2018, vol. 21, issue 10, 579-584

Abstract: The role of patient-specific (PS) technology in total hip arthroplasty remains relatively unexplored. We asked whether PS guides: (1) Reduced average surgical errors? (2) Reduced outlier error frequencies? (3) Could predict the size of implants used? A single surgeon implanted femurs using either standard or PS guides and was blinded to the pre-operative plans. There were significant differences in median leg length errors between standard (3.3 mm) and PS groups (1.4 mm), U = 110, z = –2.3, p = 0.02. In contrast to the PS group, the standard group had significantly more outlier errors and frequently undersized implants. PS guides improve hip arthroplasty surgical accuracy.Abbreviations: PS: patient specific; THA: total hip arthroplasty; LLD: leg length discrepancies; HRA: hip resurfacing arthroplasty

Date: 2018
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DOI: 10.1080/10255842.2018.1496241

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