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Schematic representation of the anterolateral ligament arising from the lateral epicondyle and getting inserted into the lateral surface of medial condyle of tibia a) knee in extension b) knee in flexion.
Source publication
Ever since its description, anterolateral ligament (ALL) of the knee joint remains as the hotspot of controversies. Though it has been described under various descriptions, the structure gained its limelight when it was christened as anterolateral ligament by Claes in 2013. The main reason for the controversies around it is the lack of concrete evi...
Context in source publication
Context 1
... et al. described ALL originated distal and anterior to the origin of fibular collateral ligament (4). The femoral attachment is high variable in and around the proximal attachment of fibular collateral ligament [ Figure 1] (4,11,(13)(14)(15). ALL then overlaps the proximal portion of fibular and it's also the commonest ligament to be reconstructed in the body. ...
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Background:
To better restore the anatomy of the native anterior cruciate ligament (ACL) attachment and fiber arrangement, researchers have developed techniques for changing the shape of the ACL bone tunnel during ACL reconstruction.
Purpose:
To compare the coverage of the ACL tibial footprint and influence on the anterior root of lateral menisc...
Citations
... Histomorphological studies provide more insight in periarticular tissue functions and have been performed on the knee (Helito et al., 2013;Kim et al., 2014;Kumar et al., 2020;Neri et al., 2018;Stubbs et al., 2005), the ankle (Rein et al., 2015;Rein & Zwipp, 2016), the shoulder (O'Brien et al., 1990;Snow et al., 2013), the wrist (Nakamichi & Tachibana, 1998;Semisch et al., 2016;Sokolow & Saffar, 2001), the trapeziometacarpal joint (Ladd et al., 2012), and the interosseous membrane of the forearm (Rein et al., 2020). Therefore, our data will provide more insights for anatomical reconstruction possibilities. ...
This study aimed to compare the histomorphology of the elbow capsule and its ligaments to gain a better understanding of the clinically relevant biomechanical stabilization. Eleven human elbows were dissected including the joint capsule with its anterior (AJC) and posterior (PJC) parts, the annular ligament (AL), the radial collateral ligament (RCL) and the ulnar collateral ligament with its anterior (AUCL), posterior (PUCL) and transverse (TUCL) parts. Hematoxylin–Eosin and Elastica van Gieson as conventional histology stainings were applied to determine collagenous and elastic fiber arrangements in transmission and polarization light microscopy. The radial collateral ligament and the anterior part of the ulnar collateral ligament showed significantly more densely packed parallel fiber arrangement than the anterior joint capsule, the posterior joint capsule, and the posterior part of the ulnar collateral ligament (p < 0.02, respectively). The PUCL had significantly more mixed tight and loose parallel arrangements than the PJC, the annular ligament, the RCL, the AUCL and the transverse part of the ulnar collateral ligamentp < 0.02, respectively), while the PJC showed significantly more interlaced mixed tight and loose fiber arrangement than the AL, the RCL and the AUCL (p < 0.003, respectively). The AJC had a significantly higher amount of elastic fibers as compared to the AL, the RCL, the AUCL and the TUCL in fascicular regions (p < 0.04, respectively), while the AUCL had significantly lesser elastic fibers than the AJC and the PJC (p < 0.004, respectively). The densely packed parallel fiber arrangement and few elastic fibers of the AUCL, RCL, and AL indicate a strong biomechanically stabilizing function. The fiber arrangement of the PUCL and the TUCL with few elastic fibers support the medial elbow stabilization. Crimping and elastic fibers provide the viscoelasticity of the joint capsule.
... Knowledge of the anatomy and biomechanics of the knee joint is crucial for understanding the various kinds of functional instabilities seen following a ligament injury. The most commonly injured and hence the most widely studied ligament of the knee joint is the anterior cruciate ligament (ACL) [1]. However, up to 25% of patients have varying grades of residual anterolateral rotational instabilities (ALRI) in the long term following surgical reconstruction of ACL [2]. ...
Background
Persistent anterolateral rotatory instability (ALRI) following the anterior cruciate ligament (ACL) reconstruction has led to a renewed interest in defining the role of anterolateral complex (ALC) of the knee.
Methods
We explored the anterolateral corner of 34 cadaveric knees to define the anterolateral ligament (ALL) in all its dimensions and measured the thickness of lateral collateral ligament (LCL) at the lateral meniscus level (tLCL) in ALL-intact and ALL-deficient knees.
Results
ALL was present in 27/34 (79%) of the knees. We found complete ALL in 13 cadavers bilaterally. ALL was absent bilaterally in three cadavers; it was present on one side and absent contralaterally in one cadaver. In ALL-intact knees, the average tLCL was 2.05 mm, whereas, in ALL-deficient knees, it was 2.57 mm. This difference in tLCL was statistically significant.
Conclusions
Our study adds new data to the recent voluminous research on ALL. We have examined the correlation between the thickness of ALL and LCL and documented alterations in the thickness of LCL in ALL-intact knees. These findings would help in designing reconstructive procedures for the combined ACL injury with ALRI.
Stakeholders in the modeling and simulation (M&S) community organized a workshop at the 2019 Annual Meeting of the Orthopaedic Research Society (ORS) entitled "Reproducibility in Modeling and Simulation of the Knee: Academic, Industry, and Regulatory Perspectives". The goal was to discuss efforts among these stakeholders to address irreproducibility in M&S focusing on the knee joint. An academic representative from a leading orthopaedic hospital in the United States described a multi-institutional, open effort funded by the National Institutes of Health to assess model reproducibility in computational knee biomechanics. A regulatory representative from the United States Food and Drug Administration indicated the necessity of standards for reproducibility to increase utility of M&S in the regulatory setting. An industry representative from a major orthopaedic implant company emphasized improving reproducibility by addressing indeterminacy in personalized modeling through sensitivity analyses, thereby enhancing preclinical evaluation of joint replacement technology. Thought leaders in the M&S community stressed the importance of data sharing to minimize duplication of efforts. A survey comprised of 103 attendees revealed strong support for the workshop and for increasing emphasis on computational modeling at future ORS meetings. Nearly all survey respondents (97%) considered reproducibility to be an important issue. Almost half of respondents (45%) tried and failed to reproduce the work of others. Two-thirds of respondents (67%) declared that individual laboratories are most responsible for ensuring reproducible research while 44% thought that journals are most responsible. Thought leaders and survey respondents emphasized that computational models must be reproducible and credible to advance knee M&S. This article is protected by copyright. All rights reserved.
