naa a22 4500 510760279 CHVBK 20180411083136.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11420-013-9337-9 doi (NATIONALLICENCE)springer-10.1007/s11420-013-9337-9 Computerized Virtual Surgery Demonstrates Where Acetabular Rim Osteophytes Most Reduce Range of Motion Following Total Hip Arthroplasty [Elektronische Daten] [Sebastian Rodriguez-Elizalde, Alyssa Yeager, Bheeshma Ravi, Joseph Lipman, Eduardo Salvati, Geoffrey Westrich] Background: Acetabular osteophytes are common findings during total hip arthroplasty (THA). Purpose: This study was designed to determine the extent to which osteophytes may limit range of motion (ROM) and in which locations impingement is likely to occur if osteophytes are not removed during surgery. Methods: Computer-aided design was used to compare ROM of a modern hip implant in four cadaver models with and without 10-mm acetabular rim osteophytes added. A clock face, with 12 o'clock at the superior pole of the right acetabulum, was used to map impingement. Results: The osteophyte model limited ROM in flexion (101° v. 113°, p = 0.03), 90° of flexion with internal rotation (16.7° v. 31.6°, p = 0.01), and external rotation (30.4° v. 49.5°, p = 0.01). Impingement occurred between 7 and 8 o'clock in external rotation and 1 and 2 o'clock in the other two motions. Conclusions: Osteophytes in these positions have the greatest impact on ROM and should be removed during THA. Hospital for Special Surgery, 2013 total hip arthroplasty nationallicence acetabular osteophytes nationallicence computer-aided design nationallicence range of motion nationallicence dislocation nationallicence Rodriguez-Elizalde Sebastian Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut Yeager Alyssa Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut Ravi Bheeshma Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, 100 College Street, M5G 1L5, Toronto, ON, Canada aut Lipman Joseph Department of Biomechanics, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut Salvati Eduardo Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut Westrich Geoffrey Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut HSS Journal ® Springer US; http://www.springer-ny.com 9/3(2013-10-01), 223-228 1556-3316 9:3<223 2013 9 11420 https://doi.org/10.1007/s11420-013-9337-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11420-013-9337-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rodriguez-Elizalde Sebastian Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Yeager Alyssa Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Ravi Bheeshma Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, 100 College Street, M5G 1L5, Toronto, ON, Canada aut NATIONALLICENCE 700 1- Lipman Joseph Department of Biomechanics, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Salvati Eduardo Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut NATIONALLICENCE 700 1- Westrich Geoffrey Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, 10021, New York, NY, USA aut NATIONALLICENCE 773 0- HSS Journal ® Springer US; http://www.springer-ny.com 9/3(2013-10-01), 223-228 1556-3316 9:3<223 2013 9 11420 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer