2023 ISAKOS Biennial Congress ePoster
Comparable Short-Term Clinical Outcomes In Rectangular-Tunnel Anterior Cruciate Ligament Reconstruction Using Quadriceps Tendon-Patellar Bone Autograft Over Round-Tunnel Reconstruction
Do Weon Lee, MD, MS KOREA, REPUBLIC OF
Sang Yoon Kim, MD, Seoul KOREA, REPUBLIC OF
Duhyun Ro, MD, Prof. , Jongno-Gu, Seoul KOREA, REPUBLIC OF
Myung Chul Lee, MD, PhD, Prof., Seoul KOREA, REPUBLIC OF
Hyuk-Soo Han, MD, PhD, Seoul KOREA, REPUBLIC OF
Seoul National University Hospital, Seoul, Seoul, KOREA, REPUBLIC OF
FDA Status Not Applicable
Summary
In the short-term, rectangular tunnel ACLR is comparable to round tunnel ACLR with QTPB autograft despite a smaller cross-sectional area. Additionally, the rectangular tunnel ACLR allows partial-thickness grafting technique, which could subsequently reduce early donor site morbidity.
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Abstract
Background
Rectangular tunnel and graft have been recently designed to closely resemble the native anatomy in anterior cruciate ligament reconstruction (ACLR). This study was performed to compare the short-term clinical outcomes between rectangular and round femoral tunnel in ACLR using QTPB autografts.
Methods
A total of 78 patients who underwent primary ACLR with QTPB autografts and had at least one year of postoperative follow-up were retrospectively reviewed. Patients who underwent rectangular tunnel ACLR (n = 40) were compared to those treated with the conventional round tunnel ACLR (n = 38). Outcomes including knee stability, clinical scores, quadriceps strength, associated complications, postoperative knee range of motion and cross-sectional area of the graft were assessed.
Results
Significant improvements in knee stability and clinical scores were observed after surgery in both groups (all p <0.001). The postoperative measurements of knee stability and clinical scores were not significantly different between the two groups. Knee extension strength deficit at 60°/sec was significantly less in the rectangular tunnel group at postoperative 6 months (41.7% vs. 48.9%, p =0.032). The cross-sectional area of the partial-thickness QTPB graft was approximately 60% of the full-thickness QTPB graft.
Conclusions
In the short-term, rectangular tunnel ACLR is comparable to round tunnel ACLR with QTPB autograft despite a smaller cross-sectional area. Additionally, the rectangular tunnel ACLR allows partial-thickness grafting technique, which could subsequently reduce early donor site morbidity.