A Prospective, Randomized Study of Surgical Positioning Software Shows Improved Cup Placement in Total Hip Arthroplasty

Autor: James F. McDonald, William G. Hamilton, Kiel J. Pfefferle, Nancy L. Parks
Rok vydání: 2019
Předmět:
Zdroj: Orthopedics. 42:42-47
ISSN: 1938-2367
0147-7447
Popis: Several technologies are available to assist surgeons with acetabular component positioning in total hip arthroplasty. The purpose of this study was to determine whether surgical positioning software would improve cup position compared with fluoroscopy. This prospective, randomized study compared 200 primary total hip arthroplasty cups placed with and without surgical positioning software. All cases were performed by a single surgeon using the direct anterior approach with fluoroscopy. The target abduction and anteversion angles were set at 40° and 20°, respectively, and measured postoperatively. Cup placement time, total fluoroscopy time, and cup position were compared between groups. Mean abduction was 40.4° (range, 32.7°−49.0°) in the software group compared with 42.3° (range, 33.7°−51.1°) in the control group. The cups placed using software were significantly closer to the target abduction angle ( P P =.063). Eighty-seven percent of cups in the software group fell within 5° of the abduction target, compared with only 68% in the control group ( P P P Orthopedics . 2019; 42(1):42–47.]
Databáze: OpenAIRE