50.8% of released allografts (125 heads) were used in revision arthroplasty. In spine surgery 83 allografts (33.7%) were implanted in spinal fusions and for cage filling during vertebral body replacement. Thirty-two grafts (13.0%) were used in miscellaneous surgeries with minor bone demand. The costs per donation were 92, with personnel costs the price per head was 140. The price range for commercial alternatives starts at 100 for 1 cm.
Age, sex, dimension of the mechanical medial proximal tibial angle (mMPTA) and severity of arthrosis in the lateral compartment had no influence on survival rates. The pre-postoperative comparison of radiologically visible signs of arthrosis showed either no or only small progress. The patients who underwent a HTO had an average of 1,9 points on the WOMAC score (global index 0–10) which is a good to very good clinical outcome.
The purpose of this study was to measure the variation of three different lines for femoral rotational alignment to show the possible difference and check the so far used values in manual instrumentation technique.
The software calculated the position of the lines and the 3-dimensional ankle between the lines. Intraoperative snapshots were taken to postoperative data analysis of the numeric data.
The prosthesis used was a prototyp and had a constrained design with a ball and socket principle.
Aim of this study was to prove the image free navigation software in the modular Navitrack-System to check the implant position based on anatomical intraoperative acquired data.