The effect of anterolateral ligament reconstruction on knee constraint: A computer model-based simulation study

Anterolateral knee complex considerations in contemporary anterior cruciate ligament reconstruction and total knee arthroplasty: a systematic review

The anterolateral ligament (ALL) was first described in 1879 in the context of Segond fractures, which correlate with a 75-100% chance of an anterior cruciate ligament (ACL) tear or a 66-75% chance of a meniscal tear. The purpose of this paper is to provide an updated comprehensive review on the anterolateral ligament complex of the knee focusing on the: (1) anatomy of the ALL/ALC; (2) associated biomechanics/function; and (3) important surgical considerations in contemporary anterior cruciate ligament (ACL) reconstruction and total knee arthroplasty (TKA). A systematic review of studies on ALL was conducted on Pubmed/MEDLINE and Cochrane databases (May 7th, 2020 to February 1st, 2022), with 20 studies meeting inclusion/exclusion criteria. Studies meeting inclusion criteria were anatomical/biomechanical studies assessing ALL function, cadaveric and computer simulations, and comparative studies on surgical outcomes of ALLR (concomitant with ACL reconstruction). Eight studies were included and graded by MINOR and Newcastle-Ottawa scale to identify potential biases. The anatomy of the ALL is part of the anterolateral ligament complex (ALC), which includes the superficial/deep iliotibial band (including the Kaplan fiber system), iliopatellar band, ALL, and anterolateral capsule. Multiple biomechanical studies have characterized the ALC as a secondary passive stabilizer in resisting tibial internal rotation. Given the role of the ALC in resisting internal tibial rotation, lateral extra-articular procedures including ALL augmentation may be considered for chronic ACL tears, ACL revisions, and a high-grade pivot shift test. In the context of TKA, in the event of injury to the ALC, a more constrained implant or soft-tissue reconstruction may be necessary to restore appropriate knee stability.

A Review of Current Concepts of the Anterolateral Complex of the Knee

The anterolateral complex (ALC) of the knee has gained increased interest over the last decades due to the high revision rates of anterior cruciate ligament reconstruction (ACLR). Furthermore, in patients with an ACL tear, the injury of at least one of the ALC's anatomic structures has been shown to be significantly higher, thus affecting its secondary stabilizing role at the knee joint. As such, ACLR augmentation techniques, that embrace the ALC, have been proposed recently, and indications for these procedures are still evolving. This review aims to present and discuss the most current anatomical, biomechanical, and imaging data, current reconstruction techniques, and the clinical results of ALC reconstruction.

APPLICATION OF PATIENT FUNCTION RECOVERY AFTER RECONSTRUCTION OF THE ANTERIOR CRUCIATE LIGAMENT

ABSTRACT Introduction: The anterior cruciate ligament (ACL) is one of the important structures of knee joint stability. Objective: To investigate the application of medical training therapy (MTT) in the functional recovery of patients after anterior cruciate ligament reconstruction. Methods: Eighty patients who were treated in a secondary hospital were selected as the study subjects and were divided into a control group and an observation group according to a random number meter, with 40 cases per group. We compared Lysholm knee function scores, the range of motion (ROM), daily life capability (ADL scale), pain degree (VAS rating), knee stretch muscle score, and standing balance ability score of the two groups 3 months after intervention. Results: After intervention, the first time getting out of bed, the doctor-patient satisfaction score, and the average length of stay were better in the observation group than in the control group (P<0.05). The excellent rate of knee function in the observation group was 92.50%, which was significantly higher than 70.00% in the control group (P<0.05). Conclusions: MTT therapy can significantly improve knee the function and pain level of patients after anterior cruciate ligament reconstruction, shorten the length of hospital stay, promote rehabilitation, improve the therapeutic effect, and improve the quality of life of patients. Level of evidence II; Therapeutic studies - investigation of treatment results.