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Year : 2004  |  Volume : 38  |  Issue : 2  |  Page : 80-83

Comparison of PCL sparing and PCL substituting implants for total knee replacement

Department of Orthopaedics, PGIMER, Chandigarh, India

Correspondence Address:
O N Nagi
1027, Sector 24-B, Chandigarh
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Source of Support: None, Conflict of Interest: None

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Methods: A retrospective study was done to compare the results of PCL sparing with PCL retaining designs of TKR in patients with similar types of deformities, with special reference to ease of surgery, post operative motion range and functional outcome. Group 1 consisted of 10 PCL substituting knees, with a mean follow up of 5.76 years, and group 2 consisted of 10 PCL retaining knees with a mean follow up of 6.31 years. We only included those cases which could be matched preoperatively with regard to age, sex, diagnosis, deformity, knee score and functional status. Results: Postoperative evaluation was done by using the Knee Society's clinical and functional scoring system, and follow up radiographs were obtained and analysed. The knee score had improved from average of 43.3 points to 90.10 points in group 1 and from 46.10 points to an average of 84.6 points in group 2. The function scores improved from 17 to 66.5 in group 1 and from 17 to 72 points in group 2. There was no difference in the post operative radiological grades. Our results showed no difference in the change in parameters in these two groups, with all cases having similar improvement vis- a- vis function and motion range. Conclusion: We noted that in cases with similar deformities, no significant improvement was achieved by sacrificing the PCL. However, specific indications do exists for excising the PCL; even if the implant is more expensive, it may be better for some cases with severe deformity, which may be difficult to correct intra­operatively without excising the PCL.

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