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Tibial tubercle osteotomy in total knee arthroplasty surgery
Claire F Young1, Robert B Bourne, Cecil H Rorabeck
1Department of Orthopaedic Surgery, London Health Sciences Centre-University Hospital, London, Ontario, Canada.
The Journal of Arthroplasty
|March 25, 2008
Summary
Tibial tubercle osteotomy (TTO) can improve total knee arthroplasty exposure without negatively impacting patient outcomes. While most patients achieve good results, 5% experience serious complications.
Area of Science:
- Orthopedic Surgery
- Arthroplasty Research
Background:
- Tibial tubercle osteotomy (TTO) is utilized to enhance surgical visualization during total knee arthroplasty (TKA).
- Long-term functional outcomes and complication rates following TTO in TKA require further investigation.
Purpose of the Study:
- To evaluate the long-term functional results and complication incidence of TTO in patients undergoing TKA.
- To determine if TTO adversely affects patient outcomes after TKA.
Main Methods:
- A retrospective review of 42 patients who underwent TTO prior to TKA.
- Assessment of pre-operative and post-operative range of motion (extension, flexion) and Knee Society scores.
- Evaluation of extensor lag, osteotomy union time, and complication rates.
Main Results:
- At a mean 8-year follow-up, significant improvements were observed in mean flexion (74 to 91 degrees) and Knee Society scores (73 to 124) (P < .0001).
- Seventy-three percent of patients achieved excellent/good scores, with 25% showing no extensor lag and 66% resolving within 6 months.
- Mean osteotomy union time was 14 weeks, with a 5% rate of serious complications.
Conclusions:
- TTO is a viable technique for improving TKA exposure, demonstrating favorable long-term functional outcomes.
- The procedure does not appear to adversely affect overall TKA results, despite a small percentage of serious complications.
