2023 ISAKOS Biennial Congress ePoster
Small Intercondylar Notch Size is Not Associated with the Poor Surgical Outcomes of Anatomical Single-Bundle ACL Reconstructions
Hyun-Soo Moon, MD, PhD, Anyang-Si, Gyeonggi-Do KOREA, REPUBLIC OF
Chong-Hyuk Choi, MD, PhD, Seoul KOREA, REPUBLIC OF
Min Jung, MD, PhD, Seoul KOREA, REPUBLIC OF
Je-Hyun Yoo, MD, PhD, Anyang-si KOREA, REPUBLIC OF
Sung-Hwan Kim, MD, PhD, Seoul KOREA, REPUBLIC OF
Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, KOREA, REPUBLIC OF
FDA Status Not Applicable
Summary
The surgical outcomes of anatomical single-bundle ACL reconstruction in patients with relatively small intercondylar notch volumes were comparable to those with large notch volumes, but rather showed favorable outcomes in objective aspects. Therefore, a small intercondylar notch size is not a risk factor for surgical outcomes in anatomical single-bundle ACL reconstruction.
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Abstract
Introduction
Although many studies have been conducted on the association between intercondylar notch size and the risk of anterior cruciate ligament (ACL) injury, few studies have examined its relationship with the condition after surgical treatment. This study aimed to investigate the surgical outcomes of anatomical single-bundle ACL reconstruction according to intercondylar notch volumes.
Methods
Medical records of patients who underwent anatomical single-bundle ACL reconstruction using a tibialis anterior allograft between 2015 and 2019 were retrospectively reviewed. For each sex, eligible patients were classified into two groups based on their percentile of intercondylar notch volumes, which were measured using postoperative three-dimensional computed tomography images (Group S, = 50th percentile of included patients; Group L, > 50th percentile of included patients). Additional grouping was performed based on the group’s percentiles of normalized values of intercondylar notch volumes to body heights. Between-group comparative analyses were performed on the perioperative data and surgical outcomes in both objective and subjective aspects.
Results
One hundred patients were included in the study. For male patients, there were no differences in the overall surgical outcomes between groups, whereas Group L showed a significantly greater knee anteroposterior (AP) laxity than Group S at the final follow-up (P = .042 for the side-to-side differences [SSD] at the maximum manual force). Similarly, there were no differences in the female patients in the overall surgical results between the groups, whereas Group L showed a significantly greater knee AP laxity at the final follow-up (P = .02 for the SSD at 134 N; P = .011 for the SSD at the maximum manual force). Additional analyses based on the normalized values of the intercondylar notch volume showed consistent results for male patients, and additional grouping for female patients was identical to the existing grouping.
Conclusion
The surgical outcomes of anatomical single-bundle ACL reconstruction in patients with relatively small intercondylar notch volumes were comparable to those with large notch volumes, but rather showed favorable outcomes in objective aspects. Therefore, a small intercondylar notch size is not a risk factor for surgical outcomes in anatomical single-bundle ACL reconstruction.