2015 ISAKOS Biennial Congress ePoster #2015

Tunnel Volume Enlargement After Posterior Cruciate Ligament Reconstruction: Comparison of Achilles Allograft Vs. Mixed Graft

Kyung-Wook Nha, Prof., Goyang, Gyeonggi KOREA, REPUBLIC OF
Jae-Kwang Song, MD, Goyangsi, Gyeonggido KOREA, REPUBLIC OF
Dae Yeon Jo, MD, Goyangsi, Gyeonggido KOREA, REPUBLIC OF
Hyung-Joon Park, MD, Goyangsi, Gyeonggido KOREA, REPUBLIC OF
Kyung-Woon Kang, MD, Goyang-si, Gyeonggi-do KOREA, REPUBLIC OF
Yong Seuk Jang, MD, Goyangsi, Gyeonggido KOREA, REPUBLIC OF
Department of Orthopaedic Surgery, Inje University, Ilsan Paik Hospital, Goyangsi, Gyeonggido, KOREA

FDA Status Not Applicable

Summary: There was no significant difference in tunnel volume enlargement after PCL reconstruction between the Achilles allograft and the mixed graft.

Abstract:

Purpose

The purpose of this study was to evaluate and compare femoral and tibial tunnel volume enlargement (TVE) after arthroscopic posterior cruciate ligament (PCL) reconstruction by remnant-bundle preservation using an Achilles allograft or mixed graft.

Method

Seventy-eight patients undergoing primary arthroscopic single-bundle PCL reconstruction were initially included. Fifty-six of those patients were followed up on for a minimum one year postoperatively. The clinical evaluation included an IKDC rating, a Lysholm score, a Tegner activity score, and KT-2000 data. All of the patients were evaluated for TVE using computed tomography (CT) scanning at the one-year follow up which results were compared with the postoperative one-week data. More than 44% of volume increments, which indicates the 2 mm widening of the tunnel diameter, were defined as TVE.

Results

The overall incidence of TVE after single-bundle PCL reconstruction was 3.6% (n=2/56) for the femoral tunnel and 5.4% (n=3/56) for the tibial tunnel. The overall mean tunnel difference between postoperative one week and the final follow-up was 12.0% for the femoral tunnel and 10.6% for the tibial tunnel. The mean femoral TVE was 10.1% in group A and 13.8% in group B; the mean tibial TVE in group A was 9.9% and in group B, 11.2%. These differences were not statistically significant differences. The functional outcome was improved in both groups, showing no statistical difference at the one-year follow up.

Conclusion

The femoral and tibial TVE after single-bundle PCL reconstruction using the remnant-bundle preservation technique showed no significant differences between the Achilles allograft and the mixed graft at short-term follow up. Furthermore, there was no significant difference in the incidence of TVE at the one-year follow up.