title: A simple method using a PACS to minimize leg length discrepancy in primary THA: a method to minimize leg length discrepancy.
abstract: We determined whether a PACS-based method (head-lesser trochanter distance [HLD]) better equalized leg length discrepancy (LLD) after primary THA than a conventional method. We retrospectively reviewed 312 patients (379 hips) with osteonecrosis or primary osteoarthritis who underwent primary cementless THA: 198 patients (240 hips) underwent THA using the HLD method, while the conventional group consisted of 114 patients (139 hips) in whom we measured with the method of McGee and Scott. We then compared the LLDs in the two groups. We observed no difference in the mean postoperative LLD. A higher percentage of patients in the HLD group had an LLD less than 6 mm: 81% vs 68% hips, respectively. HLD method decreases the possibility of an LLD over 6mm after THA.
authors.affiliation: Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
authors.forename: Young Wook
authors.initials: YW
authors.lastname: Lim
authors.forename: Yoon Jong
authors.initials: YJ
authors.lastname: Chang
authors.forename: Soon Yong
authors.initials: SY
authors.lastname: Kwon
authors.forename: Yong Sik
authors.initials: YS
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging* / Q000601:surgery; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007592:Joint Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D007870:Leg Length Inequality; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies
keywords: PACS; leg length discrepancy; total hip arthroplasty