title: Comparison of preoperative templating with postoperative assessment in cementless total hip arthroplasty.
abstract: We studied how preoperative templating corresponded to the postoperative leg length in total hip arthroplasty. On average, the preoperative predictive value of the desired corrective change in leg length was +4.9 (+4.0-+6.7) mm, while the true postoperative assessed value of the corrective change in leg length was +4.7 (+4.0-+6.3) mm. On preoperative radiographs, the ratio of the horizontal offset of a pathological side to a normal side was 95%, on average, and it increased to 96%, on average, after an operation. Preoperatively planned sizes of the acetabular cup and the femoral stem by templating showed a high rate of coincidence with the sizes used intraoperatively. In conclusion, an accurate and careful preoperative templating can result in a balanced hip reconstruction by correcting the leg length differences and restoring the offsets.
authors.affiliation: Department of Orthopaedic Surgery, Pusan National University Hospital, 1-10 Ami-Dong, Seo-Gu, Pusan 602-739, Republic of Korea. kuentak@pusan.ac.kr
authors.forename: Kuen Tak
authors.initials: KT
authors.lastname: Suh
authors.forename: Sang Jin
authors.initials: SJ
authors.lastname: Cheon
authors.forename: Dae Woong
authors.initials: DW
authors.lastname: Kim
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D002484:Cementation; D005260:Female; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000601:surgery; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D007870:Leg Length Inequality / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011300:Preoperative Care; D011474:Prosthesis Design; D011859:Radiography