The Results of Posterior Cruciate Ligament Sparing Type Total Knee Arthroplasty in Elderly Patients

Purpose: The main purpose of this study was to report the 12 to 36 months’ results of posterior cruciate ligament sparing type total knee arthroplasty in elderly patients. Methods: A retrospective evaluation was made of a total of 75 patients with advanced stage tibio - femoral arthrosis with the pain of a degree that would limit daily activities, and which had not responded to conservative treatment, and who then underwent total knee arthroplasty between April 2013 and May 2015. Results: The mean age of the patients was 71.7 years, and the mean follow-up time was 21 months (range, 12- 36 month). Body Mass Index (BMI) was calculated as >30 kg/m2 in 15 (20%) patients, 25-30 kg/m2 in 41 (54,6%), and 20-25 kg/m2 in 19 (25,3%) patients. The mean operating time was 61.06 min (range, 50-90 min). Preoperatively, the knees of all the patients were evaluated as varus. The angles shown in the AP radiographs for placement of the components were determined as alpha angle mean 96.2° (range, 89°-103°), beta angle mean 88.7° (80°-92°). Preoperative and postoperative mean knee and functional scores of the knees, according to the KSS was evaluated at 28.6°, 40.1°, 79.6°, and 78.1° respectively. The mean range of movement at the last follow-up was 96° (85-120). Conclusion: In conclusion, the results of this study showed good results were obtained with total knee arthroplasty in the treatment of knee arthrosis occurring at an advanced age, although an increase in postoperative complications was determined with increased BMI, which is consistent with other studies in the literature.