We acquired an optical tracking navigation system for Total Hip Arthroplasty. We compare cup positioning and other operative factors along with clinical results using navigated and non-navigated techniques in a series of 341 Total Hip Arthroplasties. This is a retrospective review of consecutive patients from November 2005 through December 2010, including 126 cases of imageless computer assisted total hip replacement and 215 cases of standard total hip replacement. We analyzed operative time, blood loss, leg length discrepancy, acetabular component inclination, complications, Harris Hip scores and performed a cost analysis. Follow-up was from 3–64 months. All cases were performed by or under the supervision of a single surgeon. Digital AP pelvic radiographs centered on hips were used for measurements. Radiographic results were averaged based on three individual measurements. Statistics required the student t-Test.Introduction
Method
Custom cutting blocks can produce similar alignment compared to computer navigated and conventional total knee arthroplasty (TKA) techniques. We conducted a retrospective review of 37 patients who underwent TKA by a single surgeon in a teaching hospital setting. Groups were conventional method (10), computer assisted navigation (10), and custom blocks (18). The custom group was further subdivided to CT and MRI based blocks. Post-operative alignment was measured (blinded) using full length weight bearing radiographs at 18 weeks on average. Hospital records were reviewed to determine operative time, transfusion requirements, length of hospital stay, complications and cost.Hypothesis
Method
