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. 2025 Jan;49(1):83-91.
doi: 10.1007/s00264-024-06363-6. Epub 2024 Oct 31.

Outcomes of combined single-bundle anterior cruciate ligament reconstruction and anterolateral structure reconstruction through a modified single femoral tunnel

Guorui Cao  1   2 , Shengrui Wang  3 , Jinyang Yu  1 , Xiao Wang  1 , Xiaotan Shi  1 , Lanbo Yang  1 , Xin Zhang  1 , Peijian Tong  2 , Honglue Tan  4
Affiliations

Outcomes of combined single-bundle anterior cruciate ligament reconstruction and anterolateral structure reconstruction through a modified single femoral tunnel

Guorui Cao et al. Int Orthop. 2025 Jan.

Abstract

Purpose: To explore the clinical outcomes of combining anterior cruciate ligament (ACL) reconstruction and anterolateral structure (ALS) reconstruction through a modified single femoral tunnel in patients with high risk of clinical failure.

Methods: From December 2018 to August 2022, a total of 62 patients with ACL injury in our institution were enrolled in this study. All patients were associated with high risk of clinical failure, meeting the indications of ALS reconstruction. All patients accepted arthroscopic single-bundle ACL reconstruction and ALS reconstruction using hamstring autograft through a modified single femoral tunnel. Perioperative clinical outcome measurements consisted of functions, stability and safety evaluation at different time points (preoperative, postoperative three month, six month, one year, two year, three year and more). Functional evaluation included Lysholm score, Tegner activity scale, subjective and objective International Knee Documentation Committee (IKDC) score.

Results: All patients, including 47 males and 15 females, aged 16-52 years with an average age of 29.3 ± 9.2 years, were followed up for 12-58 months. At the last follow-up, the Lysholm, subjective IKDC and Tegner activity scale (93.8 ± 7.0, 88.8 ± 10.7 and 5.8 ± 1.4 respectively) were significantly higher than those before surgery (65.0 ± 20.8, 51.2 ± 21.1 and 2.3 ± 1.3 respectively)(P < 0.05). Postoperative pivot shift and Lachman test were markedly improved (P < 0.05). One patient still had grade II pivot shift, defined as clinical failure. During follow-up, no graft rupture occurred according to magnetic resonance imaging and physical examination, no lateral compartment osteoarthritis were found in all patients.

Conclusions: Combined single bundle ACL reconstruction and ALS reconstruction through a modified single femoral tunnel could significantly improve knee function and stability with low related risk in patients with high risk of failure in ACL injury.

Keywords: Anterior cruciate ligament; Anterolateral structure; Knee function; Single femoral tunnel.

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