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Comparable Short-Term Clinical Outcomes In Rectangular-Tunnel Anterior Cruciate Ligament Reconstruction Using Quadriceps Tendon-Patellar Bone Autograft Over Round-Tunnel Reconstruction

2023 Congress Paper Abstracts
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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, KOREA, REPUBLIC OF Duhyun Ro, MD, Prof. , KOREA, REPUBLIC OF Myung Chul Lee, MD, PhD, Prof., KOREA, REPUBLIC OF Hyuk-Soo Han, MD, PhD, KOREA, REPUBLIC OF

Seoul National University Hospital, Seoul, Seoul, KOREA, REPUBLIC OF


2023 Congress   ePoster Presentation   2023 Congress   Not yet rated

 

Diagnosis / Condition

Anatomic Location

Anatomic Structure

Diagnosis Method

Ligaments

ACL


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.


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.


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