{Reference Type}: Journal Article
{Title}: Intraoperative live measurement of femoral head size for acetabular cup sizing: simple, accurate, and green!
{Author}: Assi C;Boulos K;Haykal E;Caton J;Prudhon JL;Yammine K;
{Journal}: Int Orthop
{Volume}: 48
{Issue}: 8
{Year}: 2024 Aug 15
{Factor}: 3.479
{DOI}: 10.1007/s00264-024-06211-7
{Abstract}: <B>OBJECTIVE: </B>Templating is the first step in achieving a successful total hip arthroplasty. We hypothesize that native head size is highly correlated with implanted cup size. Therefore, the purpose of this study is to look for a correlation between sizes of the intra-operative measurement of the femoral head and the implanted cup.<BR><B>METHODS: </B>This is a monocentric observational study conducted from December 2018 till January 2023. All patients admitted for a primary total hip arthroplasty were included and retrospectively reviewed. Intra-operative femoral head measurement, radiographic femoral head diameter, templated (planned) cup size, and definitive implanted cup size were recorded.<BR><B>RESULTS: </B>The sample included 154 patients (85 female and 69 males) with a mean age of 66.2 ± 10.4 years. There were 157 THA cases; 82 on the right side and 75 on the left side. The native head size and acetate template on digital radiographs were the most significantly positively correlated with cup size (P < 0.0001) while the radiological head size was significantly negatively correlated with cup size (P = 0.009). The implanted cup was on average 2 ± 2 mm bigger than the native head size measured intra-operatively.<BR><B>CONCLUSIONS: </B>The native femoral head diameter measured intra-operatively is a simple and reliable tool to help the surgeons choose the proper size of the acetabular cup, preventing complications during surgery hence optimizing results post operatively. This technique would contribute to a more ecofriendly orthopaedic reconstructive surgery.