title: Does Robotic-Assisted Computer Navigation Affect Acetabular Cup Positioning in Total Hip Arthroplasty in the Obese Patient? A Comparison Study.
abstract: Obese populations present challenges for acetabular cup placement during total hip arthroplasty (THA). This study examines the accuracy of acetabular cup inclination and version in the obese patient with robotic-assisted computer navigation. A total of 105 patients underwent robotic-assisted computer navigation THA with a posterior approach. Groups were divided on body mass index (BMI, kg/m(2)) of <30, 30-35, and >35. There was no statistical difference between the BMI <30 (n=59), BMI 30-35 (n=34) and BMI >35 (n=12) groups for acetabular inclination (P=0.43) or version (P=0.95). Robotic-assisted computer navigation provided accurate and reproducible placement of the acetabular cup within safe zones for inclination and version in the obese patient.
authors.affiliation: American Hip Institute, Westmont, Illinois.
authors.forename: Asheesh
authors.initials: A
authors.lastname: Gupta
authors.affiliation: American Hip Institute, Westmont, Illinois.
authors.forename: John M
authors.initials: JM
authors.lastname: Redmond
authors.affiliation: American Hip Institute, Westmont, Illinois.
authors.forename: Jon E
authors.initials: JE
authors.lastname: Hammarstedt
authors.affiliation: American Hip Institute, Westmont, Illinois.
authors.forename: Alexandra E
authors.initials: AE
authors.lastname: Petrakos
authors.affiliation: American Hip Institute, Westmont, Illinois.
authors.forename: S Pavan
authors.initials: SP
authors.lastname: Vemula
authors.affiliation: American Hip Institute, Westmont, Illinois; Hinsdale Orthopaedics, Hinsdale, Illinois.
authors.forename: Benjamin G
authors.initials: BG
authors.lastname: Domb
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery*; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D015992:Body Mass Index; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications* / Q000601:surgery; D011859:Radiography; D065287:Robotic Surgical Procedures / Q000706:statistics & numerical data*; D012371:Robotics; D025321:Surgery, Computer-Assisted
keywords: BMI; acetabular component position; body mass index; hip replacement; robotic-assisted surgery; total hip arthroplasty