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Ferguson D, Cuthbert R, Tibrewal S. The role of anterolateral augmentation in primary ACL reconstruction. J Clin Orthop Trauma 2020; 11:S389-S395. [PMID: 32523299 PMCID: PMC7275283 DOI: 10.1016/j.jcot.2019.09.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 09/30/2019] [Indexed: 12/22/2022] Open
Abstract
The anterolateral soft tissue envelope of the knee has long been recognised as a key stabilising structure. Once the mainstay of operative management of anterior cruciate ligament (ACL) rupture, interest in the area fell away with the advent of intraarticular arthroscopic reconstruction. Renewed interest in these structures together with cadaveric data evidencing the potential for restoration of near normal knee biomechanics following ACL and anterolateral soft tissue reconstruction has driven current concepts and development of operative techniques. Options for current anterolateral augmentation techniques in primary ACL reconstruction plus patient selection considerations are reviewed, together with an outlook at future research key to development of this area.
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Affiliation(s)
- David Ferguson
- Department of Trauma & Orthopaedic Surgery, Barnet General Hospital, Royal Free Hospitals NHS Foundation Trust, EN5 3DJ, London, UK
- Corresponding author.
| | - Rory Cuthbert
- Department of Trauma & Orthopaedic Surgery, Royal London Hospital, Barts Health NHS Trust, London, E1 1BB, UK
| | - Saket Tibrewal
- Department of Trauma & Orthopaedic Surgery, Lewisham & Greenwich NHS Trust, University Hospital Lewisham, High Street, London, SE13 6LH, UK
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Castelli A, Zanon G, Jannelli E, Ivone A, Ferranti Calderoni E, Combi A, Mosconi M, Benazzo F. The role of the anterolateral ligament in knee's biomechanics: a case-control retrospective study. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2020; 30:653-658. [PMID: 31872345 DOI: 10.1007/s00590-019-02607-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 12/13/2019] [Indexed: 02/05/2023]
Abstract
PURPOSE The aim of this study was to assess the functional and clinical results of patients who underwent ACL reconstruction surgery and were divided into subpopulations related to ACL-associated lesions and focused on ALL-associated lesion. METHODS Our retrospective analysis included 62 patients who underwent standard ACL reconstruction surgery in our hospital from 2014 to 2016. The mean follow-up period was 21 months (range 11-35). We divided the sample into two subpopulations due to the presence or absence of ALL tear at the preoperative MRI. In 42 patients out of 62 (68%), ALL lesion was evident. We evaluated in both subpopulations the ACL failure rate, the functional outcomes rated with IKDC, KOOS, Lysholm scores and the clinical assessment of anteroposterior and rotatory instability with the Lachman test and pivot-shift test. RESULTS The overall re-injury rate in our cohort of patients was 4.8% with a smaller but not a significant difference between the two groups. A statistically significant difference was observed for the three functional scores, favoring the isolated ACL-lesion group (p < 0.05). Similarly, a better Lachman score was observed in the isolated ACL-lesion group, without statistical significance (p = 0.77); overall, the rate of positive test was lower in the isolated ACL-lesion group. We observed a significant difference of residual rotatory instability (positive pivot-shift test) in the two subpopulations (p = 0.036), and 9% of patients in the ACL + ALL lesion group showed residual jerk or subluxation. CONCLUSION The additional ALL reconstruction/repair surgery should always be considered in patients with evident ALL tear at the preoperative MRI.
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Affiliation(s)
- Alberto Castelli
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
| | - Giacomo Zanon
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
| | - Eugenio Jannelli
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
| | - Alessandro Ivone
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
| | - Enrico Ferranti Calderoni
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy.
| | - Alberto Combi
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
| | - Mario Mosconi
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
| | - Francesco Benazzo
- Clinica Ortopedica E Traumatologica, Università Degli Studi Di Pavia, Fondazione IRCCS Policlinico San Matteo, via Golgi 19, 27100, Pavia, Italy
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Morphology of the anterolateral ligament: a complex of fibrous tissues spread to the anterolateral aspect of the knee joint. Anat Sci Int 2020; 95:470-477. [PMID: 32347456 PMCID: PMC7381439 DOI: 10.1007/s12565-020-00543-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/13/2020] [Indexed: 12/16/2022]
Abstract
The anterolateral ligament (ALL) has recently received considerable attention as a key structure maintaining the rotational stability of the tibia. However, the morphology of the ALL, particularly the proximal attachment, is controversial. This study aimed to elucidate the morphological relationship between the ALL and its adjacent structures. A total of 25 knees from 22 cadavers were used in the current study. One knee was set at 30°, 60° and 90° of flexion. Stretched or winkled fibrous tissues were then observed with internal and external rotations of the tibia at each angle. In 22 knees, fibrous tissues that were attached to the lateroposterior area to the Gerdy's tubercle were macroscopically observed. In the other 2 knees, the fibrous tissues were histologically investigated and analyzed using computer-assisted three-dimensional reconstruction. A taut fibrous tissue was observed between the lateroposterior area to the Gerdy's tubercle and the posterosuperior area to the lateral epicondyle during an internal rotation of the tibia. A complex of fibrous tissues that were attached to the lateroposterior area to the Gerdy's tubercle spread to the anterolateral aspect of the knee as a sheet-like structure. This complex tissue was composed of the fascia lata and fibrous tissues continuous from the fabellofibular ligament, intermuscular septum, and tendon of the gastrocnemius. Three-dimensional reconstruction showed that each fibrous tissue formed a sheet. The structure recognized as the ALL could not be detected; therefore, the ALL that has been reported to date is considered to be a complex of fibrous tissues with a sheet-like structure.
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Abstract
A subset of patients have residual rotational laxity following anterior cruciate ligament reconstruction (ACLR) despite the evolution of ACLR techniques. In recent years, there has been increased interest in addressing residual laxity because it is associated with poor outcomes after ACLR. There is an expanding body of knowledge on the anatomy and biomechanics of the anterolateral soft tissue restraints in regard to their rotational control of the knee and this has reignited an interest in extra-articular reconstruction techniques for augmenting ACLR. Reconstruction techniques currently used can be broadly categorized as either lateral extra-articular tenodesis or anterolateral ligament reconstruction. In this review, we discuss the relevant anatomy, biomechanics, and rationale behind the indications and technique of our current extra-articular augmentation procedure.
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Al'khafaji I, Devitt BM. Editorial Commentary: Magnetic Resonance Imaging Evaluation of the Anterolateral Complex-Is Seeing Really Believing? Arthroscopy 2020; 36:1092-1094. [PMID: 32247406 DOI: 10.1016/j.arthro.2020.01.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 01/24/2020] [Indexed: 02/02/2023]
Abstract
The anatomic and biomechanical role of the anterolateral complex (ALC) of the knee has gained increased interest in recent years. Specifically, a keen focus has been on magnetic resonance imaging (MRI) evaluation of the ALC in the setting of anterior cruciate ligament injury. Although many of these studies are well designed and conducted, they are based on a foundation of controversial gross anatomy and MRI protocols and scanners not typically used in standard practice. Ultimately, there is a lack of correlation between MRI evidence of injury to the ALC and clinical evaluation of anterolateral rotatory laxity. So, do we believe in what we see or believe in what we feel?
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Lee DW, Kim JG, Kim HT, Cho SI. Evaluation of Anterolateral Ligament Healing After Anatomic Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2020; 48:1078-1087. [PMID: 32176530 DOI: 10.1177/0363546520908805] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Few studies have reported the healing process of anterolateral ligament (ALL) injuries. PURPOSE/HYPOTHESIS This study investigated the healing status of ALL injuries after primary anterior cruciate ligament (ACL) reconstruction (ACLR). Additionally, we investigated the association between the healing status of ALL injuries and associated lesions such as osseous lesions and meniscal tears occurring at the time of an ACL rupture. We hypothesized that acute ALL injuries show a high rate (more than two-thirds) of healing at the 1-year follow-up after ACLR and that concomitant lesions observed at the time of an ACL rupture affect the healing status of the ALL. STUDY DESIGN Case-control study; Level of evidence, 3. METHODS We retrospectively investigated patients with ALL injuries who underwent primary ACLR between March 2015 and February 2017. Using magnetic resonance imaging (MRI), we evaluated the features of ALL injuries and concomitant lesions, and MRI was performed at the 1-year follow-up to assess the healing status of the ALL. We investigated the association between the healing status of the ALL and concomitant lesions observed at the time of an ACL rupture. A subjective assessment was performed using the Lysholm score, International Knee Documentation Committee subjective score, and Tegner activity scale. Objective tests included an isokinetic strength assessment and functional performance testing. RESULTS With respect to the severity of ALL injuries, of 54 patients, a complete rupture occurred in 16 (29.6%) of the 54 patients and a partial rupture in 38 (70%). A significant association was observed between the severity of ALL injuries and bone contusions (lateral tibial plateau and medial tibial plateau [MTP]) and meniscus ramp lesions (Fisher exact test: P = .023, .012, and .023, respectively). Good and partial healing of the ALL occurred in 16 (29.6%) and 23 (42.6%) of 54 patients, respectively. Scar formation occurred in 12 (22.2%), and nonvisualization of the ALL was observed in 3 (5.6%) of 54 patients. Poor healing of the ALL was associated with preoperative MTP bone contusions and a high-grade pivot shift. Multivariate analysis showed that an MTP bone contusion was an independent risk factor associated with poor healing of the ALL. Among the functional tests performed, significant differences were observed between the good and poor healing groups with respect to the carioca test (P = .039). The good healing group (n = 16) showed a negative pivot shift at the last follow-up, whereas 5 (13.2%) of the patients from the poor healing group (n = 38) showed a positive pivot shift, including 2 (5.3%) with a high-grade pivot shift. CONCLUSION Approximately 70% of acute ALL injuries showed poor healing at the 1-year follow-up. Poor healing of ALL injuries was significantly associated with preoperative MTP bone contusions and a high-grade pivot shift. Therefore, a careful assessment of posteromedial bone contusions at the time of an ACL rupture is warranted, particularly in patients with a high-grade pivot shift.
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Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery and Sports Medicine, Konkuk University Medical Center, Seoul, Republic of Korea
| | | | - Hyun Tae Kim
- Department of Orthopaedic Surgery and Sports Medicine, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Seung Ik Cho
- Sports Medical Center, Konkuk University Medical Center, Seoul, Republic of Korea
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Visualization of Concurrent Anterolateral and Anterior Cruciate Ligament Injury on Magnetic Resonance Imaging. Arthroscopy 2020; 36:1086-1091. [PMID: 31926615 DOI: 10.1016/j.arthro.2019.09.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 09/18/2019] [Accepted: 09/25/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To investigate the ability to visualize the anterolateral ligament (ALL) on magnetic resonance imaging (MRI) and identify ALL injuries in an intact- anterior cruciate ligament (ACL) and torn-ACL cohort. We also aimed to assess inter-rater reliability between 2 radiologists when it comes to the aforementioned assessment. METHODS MRIs that met inclusion and exclusion criteria were placed into a control (ACL-intact) or study (ACL-injured) cohort. MRIs were independently analyzed by 2 radiologists for data points pertaining to demographics, ALL visualization, presence of ALL injury, and concomitant knee abnormalities. Inter-rater reliabilities for visualizing the ALL and identifying ALL injuries were assessed. RESULTS The control and study groups consisted of 116 and 82 MRIs, respectively. Age varied between the 2 groups, but sex distribution was similar. With near-perfect agreement (kappa = 0.92), both radiologists visualized at least part of the ALL in more than 95% of MRIs irrespective of ACL integrity. The mean incidence of ALL injury in the ACL injured group was 53.05% with minimal inter-rater agreement (kappa = 0.38). Segond fractures were noted in a mean 13.95% of MRIs with concomitant ALL and ACL injuries. CONCLUSIONS The ALL was reliably visualized on MRI irrespective of whether the ACL was intact or torn. However, ALL injuries were not reliably diagnosed on MRI in the setting of an ACL tear. Poor interobserver reliability shows the potential for false-positive and -negative interpretation. These findings suggest that, in this study, ALL injuries could not be accurately diagnosed in the presence of an ACL tear using MRI. On the basis of these findings, it is recommended that physicians should not rely on MRI to diagnose an ALL injury in the presence of an ACL injury. LEVEL OF EVIDENCE Level III, retrospective comparative trial.
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Evaluating for Tunnel Convergence in Anterior Cruciate Ligament Reconstruction With Modified Lemaire Tenodesis: What Is the Best Tunnel Angle to Decrease Risk? Arthroscopy 2020; 36:776-784. [PMID: 31864816 DOI: 10.1016/j.arthro.2019.08.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 08/10/2019] [Accepted: 08/14/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE The purpose of this study was to analyze postoperative computed tomography (CT) scan evaluations of patients who had undergone a combined anterior cruciate ligament (ACL) reconstruction and modified Lemaire anterolateral tenodesis (ALT) with femoral fixation through a bony tunnel. METHODS Postoperative CT scans of 52 patients who had undergone combined ACL and ALT were prospectively evaluated. ACL femoral tunnels were drilled through an anteromedial portal in the center of the native footprint. An ALT fixation tunnel was drilled 5 mm proximal to the lateral epicondyle, aiming at an inclination of 30° proximally and 30° anteriorly. Two independent observers evaluated the CT scans measuring any degree of collision, the shortest distance between the tunnels, and the inclination of the ALT tunnels. Measurements were carried out at both the cortical level and on a plane passing 1 cm deeper in the lateral condyle. RESULTS At the level of the cortex, no convergence of the tunnels was identified. In 14 of 52 cases (26.9%), the shortest distance between the tunnels was less than 5 mm. Tunnel collision occurred in 8 of 52 cases (15.4%), and the bone bridge between the tunnels was less than 5 mm in 11 cases (21.1%) when the measurements were made on the deeper plane. When the inclination on the axial plane was less than 15°, a collision always (P < .001) occurs. When it was more than 20°, no collision occurred (P < .001). No correlation between convergence and the inclination of the ALT tunnel on the coronal plane was detected. CONCLUSIONS To fix a modified Lemaire ALT through a femoral tunnel avoiding any interference with an anatomic femoral ACL tunnel, we recommend that the femoral tunnel be drilled with an inclination of at least 20° anteriorly. LEVEL OF EVIDENCE IV, therapeutic case series.
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Castelli A, Zanon G, Jannelli E, Ivone A, Ferranti Calderoni E, Combi A, Mosconi M, Benazzo F. The role of the anterolateral ligament in knee’s biomechanics: a case–control retrospective study. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2019. [DOI: doi 10.1007/s00590-019-02607-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Redler A, Miglietta S, Monaco E, Matassa R, Relucenti M, Daggett M, Ferretti A, Familiari G. Ultrastructural Assessment of the Anterolateral Ligament. Orthop J Sports Med 2019; 7:2325967119887920. [PMID: 31897411 PMCID: PMC6920591 DOI: 10.1177/2325967119887920] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background: The anterolateral ligament (ALL) has been identified as a structure on the
lateral side of the knee, but debate exists regarding whether it is a
capsular thickening or a ligament. Hypothesis: A detailed ultrastructural characterization of the ALL and its ultrastructure
collagen arrangement will reveal it more closely resembles ligamentous
tissue than joint capsule. Study Design: Descriptive laboratory study. Methods: Eight paired knee samples from 4 fresh-frozen male cadavers were used for
this study. Samples were harvested from the ALL, the joint capsule, and the
medial collateral ligament (MCL). All samples were evaluated with light
microscopy (LM), transmission electron microscopy (TEM), and variable
pressure scanning electron microscopy (VP-SEM). With LM, the 3 tissues were
analyzed and their morphology described. With TEM, the ultrastructure and
collagen characteristics were quantified and compared among specimens. Then,
the 3-dimensional characteristics were compared with VP-SEM. Results: Ultrastructure analysis demonstrated similar morphology between the ALL and
MCL, with significant differences in these 2 structures as compared with the
joint capsule. On LM, the ALL and MCL were characterized by the presence of
a dense collagen fiber oriented in the longitudinal and transversal
directions of the fiber bundles, while the joint capsule was found to have a
more disorganized architecture. On TEM, the collagen fibers of the ALL and
MCL demonstrated similar ultrastructural morphology, with both having
collagen fibers in parallel, longitudinal alignment. A quantitative analysis
was also performed, with the mean (± SD) diameter of fibrils in the ALL and
MCL being 80 ± 2.66 nm and 150 ± 3.35 nm, respectively (all
P < .001). The VP-SEM highlighted that ALL and MCL
morphology demonstrated arrangements of fiber bundles that are densely
packed and organized, in contrast to the disorganized fibers of the joint
capsule. Conclusion: The ALL and MCL have comparable ultrastructures that are distinctly different
from the joint capsule, as visualized on LM, TEM, and VP-SEM. Clinical Relevance: The ALL should be considered a distinctive structure of the knee, although
strictly connected to the surrounding capsule.
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Affiliation(s)
- Andrea Redler
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy.,Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, University of Rome Sapienza, Rome, Italy
| | - Selenia Miglietta
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, University of Rome Sapienza, Rome, Italy
| | - Edoardo Monaco
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Roberto Matassa
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, University of Rome Sapienza, Rome, Italy
| | - Michela Relucenti
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, University of Rome Sapienza, Rome, Italy
| | - Matthew Daggett
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
| | - Andrea Ferretti
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Giuseppe Familiari
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, University of Rome Sapienza, Rome, Italy
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Katakura M, Koga H, Nakamura T, Araki D, Nagai K, Nishida K, Kuroda R, Muneta T. Biomechanical Effects of Additional Anterolateral Structure Reconstruction With Different Femoral Attachment Sites on Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2019; 47:3373-3380. [PMID: 31657943 DOI: 10.1177/0363546519880192] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Recently reported anterolateral structure reconstructions (ALSRs) to augment intra-articular anterior cruciate ligament reconstruction (ACLR) use various femoral attachment sites, and their biomechanical effects are still unknown. HYPOTHESIS ALSR concomitant with ACLR would control anterolateral rotational instability better than ACLR alone, and if ALSR had different femoral attachment sites, there would be different effects on its control of anterolateral rotational instability. STUDY DESIGN Controlled laboratory study. METHODS Twelve fresh-frozen hemipelvis lower limbs were included. Anterior tibial translation during the Lachman test and tibial acceleration during the pivot-shift test were measured with a 3-dimensional electromagnetic measurement system in situations with the (1) ACL and ALS intact, (2) ACL and ALS cut, (3) ALSR without ACLR (ALSR alone), (4) ACLR without ALSR (ACLR alone), and (5) ALSR with ACLR. Three femoral attachment sites were used for ALSR: F1, 2 mm anterior and 2 mm distal to the lateral epicondyle; F2, 4 mm posterior and 8 mm proximal to the lateral epicondyle; and F3, over-the-top position for the lateral extra-articular tenodesis. The Steel test and Wilcoxon signed rank test were used for statistical analysis. RESULTS Anterior tibial translation during the Lachman test in the ACL and ALS-cut state was significantly larger than it was in the ACL and ALS-intact state, while its difference disappeared after ACLR. As for the pivot-shift test, additional ALSR with F2 to ACLR significantly decreased the acceleration (P = .046), although additional ALSR with F1 and F3 showed no significant effect. CONCLUSION ALSR with the femoral attachment site 4 mm posterior and 8 mm proximal to the lateral epicondyle in addition to ACLR played a role in reducing anterolateral rotational instability the most effectively among the measured attachment sites. CLINICAL RELEVANCE The present data will contribute to determine the appropriate femoral attachment site for ALSR to better control anterolateral rotational instability after ACL reconstruction.
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Affiliation(s)
- Mai Katakura
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Orthopaedic Surgery, Hospital of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hideyuki Koga
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.,Department of Orthopaedic Surgery, Hospital of Medicine, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tomomasa Nakamura
- Department of Joint Surgery and Sports Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daisuke Araki
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Kanto Nagai
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Kyohei Nishida
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Ryosuke Kuroda
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Takeshi Muneta
- National Hospital Organization Disaster Medical Center, Tachikawa-shi, Japan
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Zhu Y, Qiu X, Yu T, Zhang C, Zhao X, Duan F, Hao D. Feasibility of three-dimensional constructive interference in steady state sequences for evaluating the anterolateral ligament. Clin Radiol 2019; 74:978.e9-978.e14. [PMID: 31582170 DOI: 10.1016/j.crad.2019.08.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 08/20/2019] [Indexed: 11/24/2022]
Abstract
AIM The purpose of the study was to determine the feasibility of three-dimensional (3D) constructive interference in steady state (CISS) sequences for evaluating the anterolateral ligament (ALL). MATERIALS AND METHODS Magnetic resonance imaging (MRI) of the right knee joint in 30 healthy volunteers was performed using a 3 T MRI machine. Axial T2-weighted imaging with fat saturation (T2WI-FS), coronal proton-density-weighted imaging with fat saturation (PDWI-FS), and 3D-CISS were included in the protocol. Multiplanar reconstruction (MPR) and rotating stretched curved planar reconstructions (CPRs) of the ALL at 30°, 60°, 90°, 120°, and 150° were generated from the 3D-CISS images. The visibility of the femoral part, meniscal part, tibial part, meniscal insertion, femoral footprint, and tibial footprint of the ALL on the imaging of all sequences was recorded. RESULTS Based on the CPR of 3D-CISS MRI, the presence of tibial and femoral footprints of the ALL was rated superior to MPR and PDWI-FS (96.67% and 96.67%, respectively; p<0.017). Rotating CPR of 3D-CISS MRI imaging was rated superior to PDWI-FS with respect to the tibial part, meniscal part, and meniscal insertion of the ALL (96.67%, 83.33%, and 83.33%, respectively; p<0.05). Rotating CPR of 3D-CISS MRI was rated superior to PDWI-FS with respect to the femoral part of the ALL, but the difference was not statistically significant (p=0.095). The angle between the ALL and lateral collateral ligament (LCL) on the oblique sagittal image was 18.34±1.88°. CONCLUSIONS The MRI 3D-CISS sequences significantly enhanced the ability to identify the ALL compared to the 2D MRI sequences.
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Affiliation(s)
- Y Zhu
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - X Qiu
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
| | - T Yu
- Department of Sport Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
| | - C Zhang
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - X Zhao
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - F Duan
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - D Hao
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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Çabuk H. Editorial Commentary: Knee Anterolateral Ligament Mechanoreceptors: The First Step From Peripheral to Central Nervous System. Arthroscopy 2019; 35:2928-2929. [PMID: 31604515 DOI: 10.1016/j.arthro.2019.06.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 06/26/2019] [Indexed: 02/02/2023]
Abstract
The mechanoreceptors around the knee are of interest, including those mechanoreceptors related to the anterolateral ligament. Histopathologic evaluations of mechanoreceptors are the first steps in understanding the exact sensorimotor system of the extremities. Many studies have shown these mechanoreceptors, but more electrophysiologic studies are needed to make sense of the reported phenomena.
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Park YB, Lee HJ, Ro DH, Lee GY, Kim S, Kim SH. Anterolateral ligament injury has a synergic impact on the anterolateral rotatory laxity in acute anterior cruciate ligament-injured knees. Knee Surg Sports Traumatol Arthrosc 2019; 27:3334-3344. [PMID: 30631908 DOI: 10.1007/s00167-019-05347-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 01/04/2019] [Indexed: 01/24/2023]
Abstract
PURPOSE To investigate the prevalence of the anterolateral ligament (ALL) injuries and its role in rotatory laxity in acute anterior cruciate ligament (ACL)-injured knees. METHODS Two-hundred and ninety-six consecutive patients with acute ACL injuries were evaluated retrospectively, excluding those with other ligament injury and undetectable path of ALL in MRI. Patients were divided into two groups based on the degree of ACL injury in arthroscopy (complete versus partial group). Logistic regression and discriminant analysis were performed to assess the risk of pivot shift test. RESULTS A total of 169 patients were included (128 with complete and 41 with partial ACL rupture). Overall, 106/169 (62.7%) of ALL injuries were characterized, 87/128 (67.9%) in complete group, and 19/41 (46.3%) in partial group. The incidence of pivot shift was 120/128 (93.8%) and 14/41 (34.1%) in the complete and partial groups, respectively. The odds ratio in the pivot shift of combined ALL injury was found as 3.8 (95% CI 1.8-8.4) with the overall ACL injury, but higher as 17.1 (95% CI 3.1-96.4) with partial group. Higher grade of pivot shift showed a greater incidence of injury of ALL. Degree of ACL injury and ALL injury allowed 87.0% of correct classification of subsequent anterolateral rotatory laxity. CONCLUSION Injury to the ALL could have a synergetic effect on anterolateral rotatory laxity in acute ACL-injured knee, however, its effect might be minor in case of complete tear. Careful assessment about combined ALL injury should be considered, especially in knees with high-grade pivot shift in acute ACL-injured knees. LEVEL OF EVIDENCE Retrospective prognostic study, Level IV.
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Affiliation(s)
- Yong-Beom Park
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Han-Jun Lee
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Du-Hyun Ro
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, South Korea
| | - Geun Young Lee
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Sujin Kim
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea
| | - Seong Hwan Kim
- Department of Orthopedic Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, South Korea. .,Orthopedic Department, Centre Hospitalier de Versailles, Le Chesnay, France.
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Ariel de Lima D, Helito CP, Lacerda de Lima L, Dias Leite JA, Costa Cavalcante ML. Study of the Nerve Endings and Mechanoreceptors of the Anterolateral Ligament of the Knee. Arthroscopy 2019; 35:2918-2927. [PMID: 31604514 DOI: 10.1016/j.arthro.2019.05.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 05/05/2019] [Accepted: 05/10/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To describe the morphology and distribution of the anterolateral ligament of the knee (ALL) nerve endings, aiming to understand the interaction between the proprioceptive system and knee mechanics. METHODS Twenty ALLs were obtained from fresh frozen cadavers. The ligaments were measured, weighed, and cut. Sections (10 μm) were prepared in hematoxylin and eosin-stained slides to analyze tissue integrity, and 50-μm sections were subjected to immunofluorescence with the protein gene product 9.5 as primary antibody and Alexa Fluor 488 as secondary antibody, followed by microscopic analysis. RESULTS The ALL was identified in 100% of the dissections, exhibiting a mean (± standard deviation) length of 4.0 ± 0.4 cm, a mean width of 5.5 ± 0.8 mm, and a mean weight of 0.9 ± 0.2 g. The histological sections in hematoxylin and eosin showed dense, well-organized collagen and the presence of vascular tissue. All the specimens analyzed contained type I (Ruffini-like) mechanoreceptors and free nerve endings (type IV), varying from parallel to intertwined fibers. Unclassified nerve endings with different irregular shapes were also found. The neural elements occupied 0.6% ± 0.3% of the ligament area, and most were observed near the origin of ALL insertions. CONCLUSION The ALL exhibits a peripheral nerve structure, primarily type I and IV mechanoreceptors. These findings suggest that the ALL is important for the proprioception and anterolateral stabilization of the knee. CLINICAL RELEVANCE It is important to understand ALL innervation and infer how an injury could compromise the proprioceptive role of the lateral compartment, as the ligaments contribute dynamically to stability through proprioceptive control of muscle forces. The findings confirm that the ALL is highly innervated by mechanoreceptors and may have a proprioceptive role in conjunction with the lateral collateral ligament in the lateral region of the knee.
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Affiliation(s)
| | - Camilo Partezani Helito
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brasil; Hospital Sírio Libanês, São Paulo, Brasil
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66
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Batty L, Murgier J, O'Sullivan R, Webster KE, Feller JA, Devitt BM. The Kaplan Fibers of the Iliotibial Band Can Be Identified on Routine Knee Magnetic Resonance Imaging. Am J Sports Med 2019; 47:2895-2903. [PMID: 31433960 DOI: 10.1177/0363546519868219] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND The Kaplan fibers (KFs) of the iliotibial band have been suggested to play a role in anterolateral rotational instability of the knee, particularly in the setting of an anterior cruciate ligament (ACL) rupture. Description of the normal magnetic resonance imaging (MRI) anatomy of the KFs may facilitate subsequent investigation into the MRI signs of injury. PURPOSE To assess if the KF complex can be identified on 3-T MRI using standard knee protocols. STUDY DESIGN Cohort study (diagnosis); Level of evidence, 3. METHODS 3-T MRI scans of 50 ACL-intact knees were reviewed independently by a musculoskeletal radiologist and 2 orthopaedic surgeons. Identification of the KFs was based on radiological diagnostic criteria developed a priori. Identification of the KFs in the sagittal, coronal, and axial planes was recorded. Interobserver reliability was assessed using the Kappa statistic. Detailed anatomy including distance to the joint line and relationship to adjacent structures was recorded. RESULTS The mean patient age was 43 years (range, 15-81 years), 58% were male, and 50% were right knees. The KFs were identified by at least 2 reviewers on the sagittal images in 96% of cases, on the axial images in 76% of cases, and on the coronal images in 4% of cases. The mean distance from the KF distal femoral insertion to the lateral joint line was 50.1 mm (SD, 6.6 mm) and the mean distance to the lateral gastrocnemius tendon origin was 10.8 mm (SD, 8.6 mm). The KFs were consistently identified immediately anterior to the superior lateral geniculate artery on sagittal imaging. Interobserver reliability for identification was best in the sagittal plane (Kappa 0.5) and worst in the coronal plane (Kappa 0.1). CONCLUSION The KF complex can be identified on routine MRI sequences in the ACL-intact knee; however, there is low to moderate interobserver reliability. Imaging in the sagittal plane had the highest rate of identification and the coronal plane the lowest. There is a consistent relationship between the most distal KF femoral attachment and the lateral joint line, lateral gastrocnemius tendon, and superior lateral geniculate artery.
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Affiliation(s)
- Lachlan Batty
- OrthoSport Victoria, Richmond, Melbourne, Victoria, Australia
| | - Jerome Murgier
- OrthoSport Victoria, Richmond, Melbourne, Victoria, Australia
| | - Richard O'Sullivan
- Healthcare Imaging Services, Richmond, Victoria, Australia.,Department of Medicine, Monash University, The Alfred Hospital, Melbourne, Victoria, Australia
| | - Kate E Webster
- School of Allied Health, La Trobe University, Melbourne, Victoria, Australia
| | - Julian A Feller
- OrthoSport Victoria, Richmond, Melbourne, Victoria, Australia.,School of Allied Health, La Trobe University, Melbourne, Victoria, Australia
| | - Brian M Devitt
- OrthoSport Victoria, Richmond, Melbourne, Victoria, Australia
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Goncharov EN, Koval OA, Dubrov VE, Bezuglov EN, Filimonova AM, Goncharov NG. Clinical experience with combined reconstruction of the anterior cruciate and anterolateral ligaments of the knee in sportsmen. INTERNATIONAL ORTHOPAEDICS 2019; 43:2781-2788. [DOI: 10.1007/s00264-019-04409-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 08/29/2019] [Indexed: 12/20/2022]
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Helito CP, Sobrado MF, Giglio PN, Bonadio MB, Pécora JR, Camanho GL, Demange MK. Combined Reconstruction of the Anterolateral Ligament in Patients With Anterior Cruciate Ligament Injury and Ligamentous Hyperlaxity Leads to Better Clinical Stability and a Lower Failure Rate Than Isolated Anterior Cruciate Ligament Reconstruction. Arthroscopy 2019; 35:2648-2654. [PMID: 31421960 DOI: 10.1016/j.arthro.2019.03.059] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 03/27/2019] [Accepted: 03/30/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To compare functional outcomes, residual instability, and rupture rates in patients with ligamentous hyperlaxity undergoing isolated anterior cruciate ligament (ACL) reconstruction or combined ACL and anterolateral ligament (ALL) reconstruction. METHODS Two groups of patients were evaluated and compared retrospectively. Both groups consisted of patients with ACL injuries and associated ligamentous hyperlaxity, defined based on the modified Beighton scale with a minimum score of 5. Group 1 patients underwent anatomical ACL reconstruction, and group 2 patients underwent anatomical ACL reconstruction combined with ALL reconstruction. Group 1 consisted of historical controls. The presence of associated meniscal injury, subjective International Knee Documentation Committee and Lysholm functional scores, KT-1000 measurements, the presence of a residual pivot-shift, and the graft rupture rate were evaluated. The study was performed at University of São Paulo in Brazil. RESULTS Ninety patients undergoing ACL reconstruction with ligamentous hyperlaxity were evaluated. The mean follow up was 29.6 ± 6.2 months for group 1 and 28.1 ± 4.2 months for group 2 (P = .51). No significant differences were found between the groups regarding Beighton scale, gender, the duration of injury before reconstruction, follow-up time, preoperative instability, or associated meniscal injuries. The mean age was 29.9 ± 8.1 years in group 1 and 27.0 ± 9.1 years in group 2 (P = .017). In the final evaluation, group 2 patients showed better anteroposterior clinical stability as evaluated by KT-1000 arthrometry (P = .02), better rotational stability as evaluated by the pivot-shift test (P = .03) and a lower reconstruction failure rate (21.7% [group 1] vs 3.3% [group 2]; P = .03). Clinical evaluations of postoperative functional scales showed no differences between the 2 groups (P = .27 for International Knee Documentation Committee; P = .41 for Lysholm). CONCLUSIONS Combined ACL and ALL reconstruction in patients with ligamentous hyperlaxity resulted in a lower failure rate and improved knee stability parameters compared to isolated ACL reconstruction. No differences were found in the functional scales. LEVEL OF EVIDENCE Level III, case control study.
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Affiliation(s)
- Camilo Partezani Helito
- Hospital Sírio-Libanês, São Paulo, Brazil; Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
| | - Marcel Faraco Sobrado
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Pedro Nogueira Giglio
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marcelo Batista Bonadio
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - José Ricardo Pécora
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Gilberto Luis Camanho
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marco Kawamura Demange
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
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Correlation Analysis of the Anterolateral Ligament Length with the Anterior Cruciate Ligament Length and Patient's Height: An Anatomical Study. Sci Rep 2019; 9:9802. [PMID: 31278337 PMCID: PMC6611776 DOI: 10.1038/s41598-019-46351-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 06/21/2019] [Indexed: 01/23/2023] Open
Abstract
The aim of this study was to evaluate the anatomical characteristics of the anterolateral ligament of the knee (ALL) with the focus on potential gender differences. The ALL length and the length of the lateral collateral ligament (LCL) were taken in extension. The length of the anterior cruciate ligament (ACL) was measured at 120° flexion. We correlated the length of the ALL with the LCL and ACL with respect to potential gender differences. The ALL was significantly (p = 0.044) shorter in females (mean length: 32.8 mm) compared to males (mean length: 35.7 mm). The length of the ALL correlated significantly positively with the lengths of the ACL (p < 0.001) and the LCL (p < 0.001). There was no significant correlation with the total leg length (TLL) (p = 0.888) and body size (p = 0.046). Furthermore, TLL and donor size correlated significantly positively (p < 0.001). The ALL length correlated significantly positively with the ACL and the LCL length. The ALL length did neither correlate with the TLL nor the donor size. This fact may contribute to planning of graft harvesting in the upcoming techniques for ALL reconstruction.
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Helito CP, Helito PVP, Assirati LFB, Longo CH, Bordalo-Rodrigues M, Souza FFD. Magnetic Resonance Imaging Evaluation of the Anterolateral Ligament in Acute Anterior Cruciate Ligament Injuries in an Adolescent Population. Arthroscopy 2019; 35:2136-2142. [PMID: 31272633 DOI: 10.1016/j.arthro.2019.02.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/15/2019] [Accepted: 02/17/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the frequency of anterolateral ligament (ALL) injuries in acute anterior cruciate ligament (ACL) injuries in adolescent patients using magnetic resonance imaging (MRI) and characterize other potential intra- and extra-articular knee injuries that are associated with ALL injuries. METHODS Patients between 14 and 17 years of age with acute ACL injuries (trauma for <3 weeks before examination) were retrospectively evaluated with MRI over 24 months (January 2016-December 2017). Among this population, ALL was classified as not visible, normal, or injured. Injuries were separated into strains (partial injuries), complete injuries, or Segond fractures. Possible abnormalities of the menisci, collateral ligaments, popliteal tendon, posterior cruciate ligament (PCL), iliotibial tract (ITT), and bone injuries were evaluated. Associations were calculated between ALL injuries and injuries of these other knee structures, as well as age and gender. RESULTS ALL was visible in 171 of the 184 MRI-evaluated knees (92.9%). ALL was considered normal in 68 (39.8%) and damaged in 103 (60.2%) patients. ALL injuries were considered partial in 56 (54.4%) and total in 44 (42.7%) cases. Only 3 (2.9%) cases were Segond fractures. ALL injuries were associated with ITT (P < .0001), lateral meniscus (P = .04), lateral collateral ligament (P = .01), popliteal tendon (P = .001), and medial collateral ligament (P = .009) injuries, in addition to bone contusions in the lateral compartment of the knee (P < .0001). There was no correlation between ALL injuries and medial meniscus (P = .054) or PCL (P = .16) injuries. CONCLUSIONS MRI evaluation showed ALL injuries are present in 60.2% of acute ACL injuries in adolescent patients. These injuries are associated with the medial and lateral collateral ligaments, ITT, lateral meniscus injuries, and bone contusions, but they are not associated with medial meniscus or PCL injuries. LEVEL OF EVIDENCE Level IV, case series.
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Affiliation(s)
- Camilo Partezani Helito
- Hospital Sírio-Libanês, São Paulo, Brazil; Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
| | - Paulo Victor Partezani Helito
- Hospital Sírio-Libanês, São Paulo, Brazil; Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | | | - Marcelo Bordalo-Rodrigues
- Hospital Sírio-Libanês, São Paulo, Brazil; Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
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Ferretti A, Monaco E, Redler A, Argento G, De Carli A, Saithna A, Helito PVP, Helito CP. High Prevalence of Anterolateral Ligament Abnormalities on MRI in Knees With Acute Anterior Cruciate Ligament Injuries: A Case-Control Series From the SANTI Study Group. Orthop J Sports Med 2019; 7:2325967119852916. [PMID: 31263726 PMCID: PMC6593931 DOI: 10.1177/2325967119852916] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background: Broad variation in the reported rate of magnetic resonance imaging (MRI)–detected abnormalities of the anterolateral structures of the anterior cruciate ligament (ACL)–injured knee suggests a lack of reliability that has limited the use of MRI in clinical decision making. Purpose/Hypothesis: The aim of this study was to use MRI to determine the prevalence and spectrum of abnormalities of the anterolateral structures in acute ACL-injured knees, using the contralateral uninjured knee as a reference. We hypothesized that MRI evaluation of the acutely injured knee (using the uninjured knee as a reference) would allow reliable identification of abnormalities of the anterolateral structures. Study Design: Cohort study (diagnosis); Level of evidence, 3. Methods: Patients with acute ACL injury underwent MRI scan of both knees. Images were evaluated by 3 observers. Inter- and intraobserver reliabilities were determined for MRI parameters of anterolateral ligament (ALL) injury by use of the kappa (κ) test. Univariate and multivariate analyses were conducted to test associations between ALL abnormality and associated injuries. Results: A total of 34 patients were evaluated. Of these, 30 patients (88.2%) had at least 1 ALL abnormality in the ACL-injured knee (increased signal: n = 27[79.4%]; increased thickness: n = 15[44.1%]; tapering: n = 7[20.6%]; irregularities in the path of the ALL fibers: n = 21[61.7%]). Asymmetries of the genicular vessels were observed in 21 patients (61.7%). ALL abnormality was significantly associated with lateral joint capsular tears (P < .001). No correlation was found between ALL lesions and iliotibial band lesions (P = .49). Inter- and intraobserver reliabilities were very good concerning ALL signal changes and femoral and tibial bone bruises (κ coefficient, 0.81-1). Conclusion: MRI evaluation of the ALL was associated with good and very good inter- and intraobserver reliabilities, and it demonstrated abnormalities of the ALL in the majority of acutely ACL-injured knees. The index of suspicion for ALL injury should be elevated by the presence of lesions of the lateral capsule. This suggests that the ALL is part of a wider area of the lateral capsule that is often injured simultaneously in an acute ACL tear.
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Affiliation(s)
- Andrea Ferretti
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Edoardo Monaco
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Andrea Redler
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Giuseppe Argento
- Department of Radiology, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Angelo De Carli
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | | | - Paulo Victor Partezani Helito
- Department of Orthopaedics and Traumatology, Hospital and Clinics, Faculty of Medicine, University of Sao Paulo (IOT-HCFMUSP), Sao Paulo, Brazil
| | - Camilo Partezani Helito
- Department of Orthopaedics and Traumatology, Hospital and Clinics, Faculty of Medicine, University of Sao Paulo (IOT-HCFMUSP), Sao Paulo, Brazil
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Brockmeyer M, Orth P, Höfer D, Seil R, Paulsen F, Menger MD, Kohn D, Tschernig T. The anatomy of the anterolateral structures of the knee - A histologic and macroscopic approach. Knee 2019; 26:636-646. [PMID: 30910626 DOI: 10.1016/j.knee.2019.02.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/27/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND The anatomy of the anterolateral structures of the knee is complex and still controversial. The aim of our study was to analyze this anatomy by histologic and macroscopic evaluation, with a particular emphasis on the anterolateral ligament (ALL). MATERIAL AND METHODS Twenty-three cadaveric knee joints were dissected followed by a qualitative and quantitative anatomic analysis of the anterolateral knee structures. Histology and comparison of different anterolateral structures was performed in addition. RESULTS The ALL was identified in all of the dissected cadaveric knee specimens. It runs in an oblique course from its proximo-dorsal insertion at the distal femur into a ventro-distal direction to the anterolateral tibia. The femoral insertion site was found to be posterior and slightly proximal to the lateral femoral epicondyle and the femoral attachment of the lateral collateral ligament (LCL). The femoral insertion of the ALL overlapped the LCL in all dissected knees. The tibial insertion site was midway between Gerdy's tubercle (GT) and the tip of the fibular head (FH). In 15 of the dissected 23 knee joints, thin attachments to the lateral meniscus were observed. Histology confirmed differences in the composition of the anterolateral knee joint capsule, the ALL and the iliotibial band (ITB). CONCLUSIONS The ALL occurs as a regular separate anterolateral ligamentous structure. It is distinguishable from the ITB and the anterolateral joint capsule in both embalmed and non-embalmed specimens. Histology of the ALL indicates typical ligamentous tissue which clearly differs from the anterolateral knee joint capsule and the thicker ITB. LEVEL OF EVIDENCE Level II, descriptive anatomic study.
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Affiliation(s)
- Matthias Brockmeyer
- Saarland University Medical Center, Department of Orthopaedics and Orthopaedic Surgery, Kirrberger Straße, Geb. 37, 66421 Homburg, Saar, Germany.
| | - Patrick Orth
- Saarland University Medical Center, Department of Orthopaedics and Orthopaedic Surgery, Kirrberger Straße, Geb. 37, 66421 Homburg, Saar, Germany; Saarland University Medical Center, Center of Experimental Orthopaedics, Kirrberger Straße, Geb. 37, 66421 Homburg, Saar, Germany
| | - Denis Höfer
- Saarland University Medical Center, Institute of Anatomy and Cell Biology, Kirrberger Straße, Geb. 61, 66421 Homburg, Saar, Germany
| | - Romain Seil
- Department of Orthopaedic Surgery, Centre Hospitalier de Luxembourg-Clinique d'Eich, 78 Rue d'Eich, 1460, Luxembourg, Luxembourg; Sports medicine Research Laboratory, Luxembourg Institute of Health, 78 Rue d'Eich, 1460 Luxembourg, Luxembourg
| | - Friedrich Paulsen
- Friedrich Alexander University Erlangen-Nürnberg, Department of Functional and Clinical Anatomy, Universitätsstr. 19, 91054 Erlangen, Germany
| | - Michael D Menger
- Saarland University Medical Center, Institute for Clinical & Experimental Surgery, Saarland University, 66421 Homburg/Saar, Germany
| | - Dieter Kohn
- Saarland University Medical Center, Department of Orthopaedics and Orthopaedic Surgery, Kirrberger Straße, Geb. 37, 66421 Homburg, Saar, Germany
| | - Thomas Tschernig
- Saarland University Medical Center, Institute of Anatomy and Cell Biology, Kirrberger Straße, Geb. 61, 66421 Homburg, Saar, Germany
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Andrade R, Rebelo-Marques A, Bastos R, Zaffagnini S, Seil R, Ayeni OR, Espregueira-Mendes J. Identification of Normal and Injured Anterolateral Ligaments of the Knee: A Systematic Review of Magnetic Resonance Imaging Studies. Arthroscopy 2019; 35:1594-1613.e1. [PMID: 31000390 DOI: 10.1016/j.arthro.2018.10.120] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 10/22/2018] [Accepted: 10/25/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To identify the normal and injured magnetic resonance imaging appearance of the anterolateral ligament (ALL). METHODS A systematic review was performed using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. The PubMed and Cochrane Library electronic databases were used to search for studies that reported the imaging outcomes of the appearance of the ALL. Two authors performed the searches in duplicate up to April 30, 2018, and interobserver agreement was calculated. The methodologic quality of included articles was assessed using an adaptation of the Arrivé methodologic quality scale for clinical studies of radiologic examinations. RESULTS From the original 270 records, a total of 24 studies (κ = 0.94) comprising 2,427 knees in 2,388 patients (mean age, 33.3 years; 66% male patients; 63% with anterior cruciate ligament [ACL] injury) were included. The ALL appeared in 51% to 100% of all assessed knees (71%-100% in ACL-injured knees and 64%-97% in uninjured knees) and was injured in 11% to 79% of ACL-injured knees. Reliability rates varied considerably (0.04-1.0 for intraobserver and 0.143-1.0 for interobserver agreement), and the entire portion of the ligament was often not seen. The tibial insertion was seen in 21% to 96% of cases, followed by the meniscal (range, 0%-100%) and femoral (range, 0%-90%) insertions. The mean methodologic quality score was 5.1 ± 1.8 out of a possible score of 9. CONCLUSIONS High variability was found in the identification of normal and injured ALL definition methods and the respective magnetic resonance imaging findings. Reliability rates varied considerably, and the entire portion of the ligament was often not seen. LEVEL OF EVIDENCE Level IV, systematic review of Level II to IV studies.
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Affiliation(s)
- Renato Andrade
- Clínica do Dragão, Espregueira-Mendes Sports Centre-FIFA Medical Centre of Excellence, Porto, Portugal; Dom Henrique Research Centre, Porto, Portugal; Faculty of Sports, University of Porto, Porto, Portugal
| | - Alexandre Rebelo-Marques
- Clínica do Dragão, Espregueira-Mendes Sports Centre-FIFA Medical Centre of Excellence, Porto, Portugal; Dom Henrique Research Centre, Porto, Portugal; Faculty of Medicine, University of Coimbra, Coimbra, Portugal; Instituto de Investigação Clínica e Biomédica de Coimbra (iCBR), Coimbra, Portugal
| | - Ricardo Bastos
- Clínica do Dragão, Espregueira-Mendes Sports Centre-FIFA Medical Centre of Excellence, Porto, Portugal; Dom Henrique Research Centre, Porto, Portugal; Fluminense Federal University, Niteroi, Brazil
| | - Stefano Zaffagnini
- Rizzoli Orthopaedic Institute, University of Bologna, Bologna, Italy; Second Orthopaedic and Traumatology Clinic, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - Romain Seil
- Département de l'Appareil Locomoteur, Centre Hospitalier de Luxemburg, Luxembourg, Luxembourg; Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg
| | - Olufemi R Ayeni
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - João Espregueira-Mendes
- Clínica do Dragão, Espregueira-Mendes Sports Centre-FIFA Medical Centre of Excellence, Porto, Portugal; Dom Henrique Research Centre, Porto, Portugal; Orthopaedics Department of Minho University, Minho, Portugal; 3B's Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Portugal.
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Getgood A. Editorial Commentary: Magnetic Resonance Imaging of the Knee Anterolateral Ligament: Does It Really Matter? Arthroscopy 2019; 35:1614-1617. [PMID: 31054734 DOI: 10.1016/j.arthro.2019.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 02/02/2023]
Abstract
Great interest remains in the structures of the knee anterolateral complex and how they work synergistically with the anterior cruciate ligament to control anterolateral rotatory laxity. Many studies have now used magnetic resonance imaging to assess the degree of damage to the anterolateral ligament. The systematic review described in this commentary rigorously highlights the many deficiencies that exist within our current understanding of the imaging analysis of these structures. Marked variability in the definition of anterolateral ligament injury, significant methodological differences, and the lack of a gold standard reference make it very challenging to translate the findings of these imaging studies into clinical practice. More information is required to fully understand the injury pattern, and then clinical studies are needed to guide treatment. Hopefully we will then have the ability to better treat our patients with these challenging complex laxity patterns that exist over and above an isolated anterior cruciate ligament injury.
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Smith PA, Thomas DM, Pomajzl RJ, Bley JA, Pfeiffer FM, Cook JL. A Biomechanical Study of the Role of the Anterolateral Ligament and the Deep Iliotibial Band for Control of a Simulated Pivot Shift With Comparison of Minimally Invasive Extra-articular Anterolateral Tendon Graft Reconstruction Versus Modified Lemaire Reconstruction After Anterior Cruciate Ligament Reconstruction. Arthroscopy 2019; 35:1473-1483. [PMID: 30926192 DOI: 10.1016/j.arthro.2018.11.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 11/02/2018] [Accepted: 11/04/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine whether the deep fibers of the iliotibial band (dITB) or the anterolateral ligament (ALL) provides more control of a simulated pivot shift and whether a minimally invasive anterolateral reconstruction (ALR) designed to functionally restore the ALL and dITB is mechanically equivalent to a modified Lemaire reconstruction (MLR). METHODS Six matched pairs of cadaveric knees (N = 12) were subjected to a simulated pivot shift to evaluate anteroposterior translation; internal rotation; and valgus laxity at 0°, 30°, and 90° of flexion. The anterior cruciate ligament (ACL) was sectioned in all specimens, and retesting was performed. Within each pair, sequential sectioning of the ALL and dITB was performed, followed by testing; the contralateral knee was sectioned in reverse order. Knees underwent ACL reconstruction (ACLR) and repeat testing. Then, MLR (n = 6) or ALR (n = 6) was performed on matched pairs for final testing. RESULTS Sectioning of the dITB versus ALL (after ACL sectioning) produced significantly more anterior translation at all flexion angles (P = .004, P = .012, and P = .011 for 0°, 30°, and 90°, respectively). The ACL-plus-dITB sectioned state had significantly more internal rotation at 0° versus ACL plus ALL (P = .03). ACLR plus ALR restored native anterior translation at all flexion angles. ACLR plus MLR restored anterior translation to native values only at 0° (P = .34). We found no statistically significant differences between ACLR plus ALR and ACLR plus MLR at any flexion angle for internal rotation or valgus laxity compared with the native state. CONCLUSIONS ALR of the knee in conjunction with ACLR can return the knee to its native biomechanical state without causing overconstraint. The dITB plays a more critical role in controlling anterior translation and internal rotation at 0° than the ALL. The minimally invasive ALR was functionally equivalent to MLR for restoration of knee kinematics after ACLR. CLINICAL RELEVANCE The dITB is more important than the ALL for control of the pivot shift. A minimally invasive extra-articular tendon allograft reconstruction was biomechanically equivalent to a modified Lemaire procedure for control of a simulated pivot shift.
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Affiliation(s)
- Patrick A Smith
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, U.S.A.; Columbia Orthopaedic Group, Columbia, Missouri, U.S.A..
| | - Dimitri M Thomas
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, U.S.A
| | - Ryan J Pomajzl
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, U.S.A.; SSM Health Medical Group, Bridgeton, Missouri, U.S.A
| | - Jordan A Bley
- Columbia Orthopaedic Group, Columbia, Missouri, U.S.A
| | - Ferris M Pfeiffer
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, U.S.A
| | - James L Cook
- Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, U.S.A.; Thompson Laboratory for Regenerative Orthopaedics, University of Missouri, Columbia, Missouri, U.S.A
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Anterolateral ligament as a main stabilizing structure оf rotational stability оf the knee joint. КЛИНИЧЕСКАЯ ПРАКТИКА 2019. [DOI: 10.17816/clinpract10172-80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Currently, anterior cruciate ligament grafting is one of the most popular operations on the knee joint, but despite the fact that the technique has been used for years, there is a high percentage of unsatisfactory long-term postoperative results, reaching 25%, according to various authors. The concern over this problem has led to an increase in the number of studies aimed at the understanding of the causes of these failures. Most researchers have concluded that the unsatisfactory results are associated with instability in the knee joint, which is caused by the damage of a ligamentous structure found in many dissections, namely, anterolateral ligament (ALL). In this literature review, we have analyzed the articles dedicated to the ALL, its anatomical and histological structure, its biomechanics, as well as its role in the anterolateral stability of the joint. Also in this review we consider the existing surgical methods for the correction of anterolateral instability associated with the ALL damage.
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Anatomical Consideration of the Anterolateral Ligament of the Knee. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5740473. [PMID: 31111059 PMCID: PMC6487136 DOI: 10.1155/2019/5740473] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/25/2019] [Accepted: 03/27/2019] [Indexed: 12/19/2022]
Abstract
Many researchers have studied the structures of the anterolateral part of the knee. Several researchers have investigated the existence of the anterolateral ligament (ALL) and its frequency has been inconsistently reported. Therefore, we assessed whether the ALL is the anatomical true ligament and studied the morphological variations of this structure. Sixty-four Korean adult cadavers (120 knees, mean age: 79.1 years) were used for this study. The lateral part of the knee joint was carefully dissected with internal rotation of the tibia. We checked the existence and morphological features and measured the dimensions (length, width, and thickness) of the ALL. The ALL was clearly distinguished from the capsulo-osseous layer of the iliotibial tract and runs obliquely from the lateral femoral epicondyle to the tibial plateau. The ALL was found in 42.5% of the samples, and 15 cadavers had ALLs in both knees. There was no prevalence difference between females and males. Most of the anterior border of the ALL was blended with the knee capsule. Therefore, we concluded that this structure is a local thickening of the capsule in the anterolateral region of the knee, where it possibly developed against some external physical stress. Therefore, the ALLs in this present study can be defined as a capsular ligament of the knee and, as per the nomenclature of the capsular ligament, can be also called the ‘anterolateral (capsular) ligament'.
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Monaco E, Helito CP, Redler A, Argento G, De Carli A, Saithna A, Helito PVP, Ferretti A. Correlation Between Magnetic Resonance Imaging and Surgical Exploration of the Anterolateral Structures of the Acute Anterior Cruciate Ligament-Injured Knee. Am J Sports Med 2019; 47:1186-1193. [PMID: 30943080 DOI: 10.1177/0363546519831686] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Combined anterior cruciate ligament (ACL) and anterolateral ligament (ALL) reconstruction is associated with improved clinical outcomes as compared with isolated intra-articular reconstruction, but the indications are not precisely defined. It may be the case that patients with proven anterolateral injury on preoperative imaging are most likely to benefit, but the accuracy of magnetic resonance imaging (MRI) is not known. PURPOSE/HYPOTHESIS To evaluate the correlation between MRI and surgical exploration in acute ACL-injured knees. The hypothesis was that a positive correlation would be identified between imaging and surgical findings for ALL/capsule and iliotibial band (ITB) injuries and that MRI would be highly sensitive, specific, and accurate. STUDY DESIGN Cohort study (diagnosis); Level of evidence, 2. METHODS Between January and May 2016, patients presenting with acute ACL injuries were considered for study eligibility. Included patients underwent 1.5-T MRI, which was evaluated by 3 investigators who attributed a Ferretti grade of injury to the anterolateral structures. At the time of ACL reconstruction, a lateral exploration was undertaken, and macroscopic injuries were identified. An evaluation of correlation between MRI and surgical exploration findings was performed. RESULTS Twenty-six patients participated in the study, and 96% had an ALL/capsule injury. The sensitivity, specificity, and accuracy of MRI and the correlation ( K) with surgical exploration findings were as follows, respectively: any ALL/capsule abnormality-88%, 100%, 88.5%, and 0.47; differentiating partial or complete ALL/capsule tears-78.6%, 41.7%, 61.5%, and 0.23; ITB injuries-62.5%, 40%, 50%, and 0.27. The percentage agreement between MRI and surgical findings was 88% for ALL/capsule injury, 65% for ITB injury, and 53% for Ferretti grading. CONCLUSION Surgical exploration demonstrates that injuries occur to the anterolateral structures in almost all acute ACL-injured knees. MRI is highly sensitive, specific, and accurate for detection of abnormalities of the ALL/capsule and shows a high percentage of agreement with surgical findings. MRI has low sensitivity, specificity, and accuracy for the diagnosis of ITB injury. The Ferretti grade could not be reliably established from MRI, and there was only fair agreement between MRI and surgical findings with respect to ITB abnormalities and determination of whether ALL/capsular tears were partial or complete.
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Affiliation(s)
- Edoardo Monaco
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Camilo Partezani Helito
- Department of Orthopaedics and Traumatology, Hospital and Clinics, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Andrea Redler
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Giuseppe Argento
- Department of Radiology, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Angelo De Carli
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
| | - Adnan Saithna
- Southport and Ormskirk Hospitals NHS Trust, Town Lane, Southport, UK
| | - Paulo Victor Partezani Helito
- Department of Orthopaedics and Traumatology, Hospital and Clinics, Faculty of Medicine, University of Sao Paulo, Sao Paulo, Brazil
| | - Andrea Ferretti
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, S. Andrea Hospital, University of Rome Sapienza, Rome, Italy
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Monaco E, Mazza D, Redler A, Drogo P, Wolf MR, Ferretti A. Anterolateral Ligament Repair Augmented With Suture Tape in Acute Anterior Cruciate Ligament Reconstruction. Arthrosc Tech 2019; 8:e369-e373. [PMID: 31080720 PMCID: PMC6506759 DOI: 10.1016/j.eats.2018.11.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 11/13/2018] [Indexed: 02/03/2023] Open
Abstract
Several extra-articular surgical techniques in addition to anterior cruciate ligament reconstruction have been proposed to better restore rotational instability of the knee. One option is surgical repair of the anterolateral ligament in acute cases to achieve an anatomic reconstruction. An additional augmentation to the repair could allow a load-sharing-and thus protective-effect for the repair during the healing process. The purpose of this Technical Note is to describe a primary repair of the anterolateral ligament with suture tape augmentation (Internal Brace; Arthrex, Naples, FL) in a patient with an acute anterior cruciate ligament tear.
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Affiliation(s)
- Edoardo Monaco
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, Sant'Andrea Hospital, University of Rome “Sapienza”, Rome, Italy
| | - Daniele Mazza
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, Sant'Andrea Hospital, University of Rome “Sapienza”, Rome, Italy
- Address correspondence to Daniele Mazza, M.D., Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, Sant'Andrea Hospital, University of Rome “Sapienza,” Via Grottarossa 1035, Rome, Italy.
| | - Andrea Redler
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, Sant'Andrea Hospital, University of Rome “Sapienza”, Rome, Italy
| | - Piergiorgio Drogo
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, Sant'Andrea Hospital, University of Rome “Sapienza”, Rome, Italy
| | - Megan Rianne Wolf
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut, U.S.A
| | - Andrea Ferretti
- Orthopaedic Unit and Kirk Kilgour Sports Injury Centre, Sant'Andrea Hospital, University of Rome “Sapienza”, Rome, Italy
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Forsythe B, Agarwalla A, Lansdown DA, Puzzitiello R, Verma NN, Cole BJ, Bach BR, Inoue N. Proximal fixation anterior to the lateral femoral epicondyle optimizes isometry in anterolateral ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2019; 27:875-884. [PMID: 30259147 DOI: 10.1007/s00167-018-5150-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/19/2018] [Indexed: 02/08/2023]
Abstract
PURPOSE Concomitant anterolateral ligament (ALL) injury is often observed in patients with an anterior cruciate ligament injury leading some to recommend concurrent ALL reconstruction. In ligament reconstruction, it is imperative to restore desirable ligament length changes to prevent stress on the graft. The purpose of this investigation is to identify the optimal femoral and tibial locations for fixation in ALL reconstruction. METHODS 3D computerized tomography (CT) knee models were obtained from six fresh-frozen, unpaired, cadaveric human knees at 0°, 10°, 20°, 30°, 40°, 90°, 110°, and 125°of knee flexion. Planar grids were projected onto the lateral knee. Isometry between each tibial and femoral grid point was calculated at each angle of flexion by the length change in reference to the length at 0° of knee flexion. The mean normalized length change over the range of motion was calculated for each combination of points at all angles of flexion were calculated. RESULTS Fixation of the ALL to the lateral femoral epicondyle or 5 mm anterior to the epicondyle with tibial fixation on the posteroinferior aspect of the tibial condyle (14-21 mm posterior to Gerdy's tubercle and 13-20 mm below the joint line) provided the lowest average length change for all possible ALL tibial insertion points. Minimal length change for all femoral fixation locations occurred from 20° to 40° of flexion, which identifies the angle of flexion where graft tensioning should occur intraoperatively. CONCLUSION With the use of 3D reconstructed models of knee-CT scans, we observed that there was no ALL fixation point that was truly isometric throughout range of motion. Fixation of the anterolateral ligament on the lateral femoral epicondyle or anterior to the lateral femoral epicondyle and on the inferoposterior aspect of the tibial condyle restores isometry. Additionally, minimal length change was observed between 20° and 40° of flexion, which is the most appropriate range of knee flexion to tension the graft. Reproducing isometry reduces stress on the graft, which minimizes the risk of graft failure.
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Affiliation(s)
- Brian Forsythe
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA.
| | - Avinesh Agarwalla
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA
| | - Drew A Lansdown
- University of California, San Francisco, San Francisco, CA, USA
| | - Richard Puzzitiello
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA
| | - Nikhil N Verma
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA
| | - Brian J Cole
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA
| | - Bernard R Bach
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA
| | - Nozomu Inoue
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA
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Weber AE, Zuke W, Mayer EN, Forsythe B, Getgood A, Verma NN, Bach BR, Bedi A, Cole BJ. Lateral Augmentation Procedures in Anterior Cruciate Ligament Reconstruction: Anatomic, Biomechanical, Imaging, and Clinical Evidence. Am J Sports Med 2019; 47:740-752. [PMID: 29401410 DOI: 10.1177/0363546517751140] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND There has been an increasing interest in lateral-based soft tissue reconstructive techniques as augments to anterior cruciate ligament reconstruction (ACLR). The objective of these procedures is to minimize anterolateral rotational instability of the knee after surgery. Despite the relatively rapid increase in surgical application of these techniques, many clinical questions remain. PURPOSE To provide a comprehensive update on the current state of these lateral-based augmentation procedures by reviewing the origins of the surgical techniques, the biomechanical data to support their use, and the clinical results to date. STUDY DESIGN Systematic review. METHODS A systematic search of the literature was conducted via the Medline, EMBASE, Scopus, SportDiscus, and CINAHL databases. The search was designed to encompass the literature on lateral extra-articular tenodesis (LET) procedures and the anterolateral ligament (ALL) reconstruction. Titles and abstracts were reviewed for relevance and sorted into the following categories: anatomy, biomechanics, imaging/diagnostics, surgical techniques, and clinical outcomes. RESULTS The search identified 4016 articles. After review for relevance, 31, 53, 27, 35, 45, and 78 articles described the anatomy, biomechanics, imaging/diagnostics, surgical techniques, and clinical outcomes of either LET procedures or the ALL reconstruction, respectively. A multitude of investigations were available, revealing controversy in addition to consensus in several categories. The level of evidence obtained from this search was not adequate for systematic review or meta-analysis; thus, a current concepts review of the anatomy, biomechanics, imaging, surgical techniques, and clinical outcomes was performed. CONCLUSION Histologically, the ALL appears to be a distinct structure that can be identified with advanced imaging techniques. Biomechanical evidence suggests that the anterolateral structures of the knee, including the ALL, contribute to minimizing anterolateral rotational instability. Cadaveric studies of combined ACLR-LET procedures demonstrated overconstraint of the knee; however, these findings have yet to be reproduced in the clinical literature. The current indications for LET augmentation in the setting of ACLR and the effect on knee kinematic and joint preservation should be the subject of future research.
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Affiliation(s)
- Alexander E Weber
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, California, USA
| | - William Zuke
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - Erik N Mayer
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, California, USA
| | - Brian Forsythe
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - Alan Getgood
- Fowler Kennedy Sports Clinic, Western University, London, Ontario, Canada
| | - Nikhil N Verma
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - Bernard R Bach
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
| | - Asheesh Bedi
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Brian J Cole
- Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, USA
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Anatomy of the Anterolateral Ligament of the Knee: A Systematic Review. Arthroscopy 2019; 35:670-681. [PMID: 30612770 DOI: 10.1016/j.arthro.2018.09.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/02/2018] [Accepted: 09/03/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To conduct a systematic literature review to search for studies on the anatomy of the anterolateral ligament (ALL) of the knee, presenting the most accepted findings, as well as the evolution of anatomic information on this structure. METHODS We reviewed the PubMed, MEDLINE, and ClinicalKey databases for anatomic studies on the ALL, involving cadaveric, histologic, and biochemical dissection and/or anatomic imaging. The primary data researched were the presence of the ligament; measures of length, width, and thickness; ligament path; insertions; number of bands; histologic assessment; and innervation. RESULTS We identified 53 studies. The ALL was found in 82.87% of adult dissections (more easily visualized in fresh cadavers), 74.07% of fetal dissections, and 84.80% of magnetic resonance imaging (MRI) studies. In 29 articles, the ALL was found in 100% of cases. There are 3 ALL insertion points: femoral, tibial, and meniscal. Histologic sections showed dense, well-organized collagen fibers, with an average of 121 fibroblasts/mm2 in adults, in addition to the presence of vascular and nervous tissue. MRI was shown to be a good examination tool to visualize the ALL, primarily in the coronal plane and with T2-weighted images. CONCLUSIONS The ALL is a distinct structure in the anterolateral portion of the knee. It exhibits typical ligament characteristics and can be visualized on imaging examinations, especially MRI. It has a femoral attachment near the lateral epicondyle, with a trend in recent years showing it to be located posterior and proximal to it, following an anteroinferior trajectory, with an insertion into the lateral meniscus and proximal tibia at the midpoint between the fibular head and Gerdy tubercle. Among the studies, the length of the ALL varied from 30.41 to 59.0 mm, the width ranged between 4.0 and 7.0 mm, and the thickness ranged between 1.0 and 2.0 mm. CLINICAL RELEVANCE During the past few years, much controversy has been raised about the correct anatomy of the ALL. The main clinical relevance of this study is not only to end the discussion about the ALL's existence but also to clarify and synthesize the main evidence on the ALL's anatomy, mainly the currently most accepted attachments according to the recent literature, to enable more precise development of biomechanical settings and surgical techniques.
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Assessment of Anterolateral Complex Injuries by Magnetic Resonance Imaging in Patients With Acute Rupture of the Anterior Cruciate Ligament. Arthroscopy 2019; 35:521-527. [PMID: 30611593 DOI: 10.1016/j.arthro.2018.08.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 08/07/2018] [Accepted: 08/08/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To assess anterolateral complex (ALC) injuries in patients with acute anterior cruciate ligament (ACL) rupture on magnetic resonance imaging (MRI). METHODS Patients with acute ACL rupture who underwent ACL surgery between 2015 and 2017 and underwent MRI within 6 weeks of the initial trauma were included. Two radiologists assessed magnetic resonance images retrospectively for the status of the ALC, including the iliotibial band (ITB), Kaplan fibers, and anterolateral ligament (ALL), as follows: grade 0, normal; grade 1, periligamentous edema; grade 2, partial tear; and grade 3, complete tear. The findings were analyzed using the Friedman test and weighted κ values. RESULTS Sixty-nine MRI scans were reviewed. Of the 69 patients, 51% had associated injuries to the ITB (grade 1, n = 31; grade 2, n = 4), 33% had associated injuries to the Kaplan fibers (grade 1, n = 21; grade 2, n = 2), and 57% had associated injuries to the ALL (grade 1, n = 12; grade 2, n = 22; grade 3, n = 5). We found a significant difference in the frequency and grading between ITB, Kaplan fiber, and ALL injuries (P ≤ .032). Inter-reader agreement for assessing the ALC on MRI was almost perfect (κ ≥ 0.922). CONCLUSIONS On the basis of MRI analysis, ALL injuries were found with varying degrees of severity and intensity with noted injuries to associated surrounding fibers in patients with acute ACL rupture. LEVEL OF EVIDENCE Level IV, case series.
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High risk of tunnel convergence during combined anterior cruciate ligament and anterolateral ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2019; 27:611-617. [PMID: 30298415 DOI: 10.1007/s00167-018-5200-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 10/04/2018] [Indexed: 12/31/2022]
Abstract
PURPOSE To assess the risk of femoral tunnel convergence in combined anterior cruciate ligament (ACL) and anterolateral ligament (ALL) reconstructions. The hypothesis was that a more proximal and anterior orientation of the ALL femoral tunnel should reduce the risk of convergence with the ACL femoral tunnel. METHODS 15 fresh-frozen cadaver knees were examined. An anatomic ACL femoral tunnel was drilled arthroscopically in each specimen and ALL tunnels were made in two directions: (1) 0° coronal angulation and 20° axial angulation, (2) 30° coronal angulation and 30° axial angulation. Computed tomography scans were performed to investigate tunnel convergence and to measure the minimal distance between tunnels, tunnel length and the LFC width. RESULTS Tunnel convergence occurred in 20 of 30 cases (67%). Convergence was significantly reduced when tunnels were drilled at 30° coronal and 30° axial angulation (p < 0.05). The mean length of the ALL tunnel was 15.9 mm [95% CI (13.6; 18.1)] and was independent of ALL tunnel angulation. The mean minimal distance between the ALL and ACL tunnel was 3.1 mm [95% CI (2.1; 4.1)]. The odds ratio for tunnel convergence was 3.5 for small LFC, relative to large LFC (n.s.) CONCLUSION: A high risk of tunnel convergence was observed when performing combined ACL and ALL reconstructions. The clinical relevance of this work is that the occurrence of tunnel conflicts can be reduced by aiming the ALL tunnel in a more proximal and anterior direction. Surgeons should be aware of this, since tunnel convergence could jeopardize the ACL reconstruction and fixation.
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Temponi EF, Saithna A, de Carvalho LH, Teixeira BP, Sonnery-Cottet B. Nonoperative Treatment for Partial Ruptures of the Lateral Collateral Ligament Occurring in Combination With Complete Ruptures of the Anterolateral Ligament: A Common Injury Pattern in Brazilian Jiu-Jitsu Athletes With Acute Knee Injury. Orthop J Sports Med 2019; 7:2325967118822450. [PMID: 30719481 PMCID: PMC6348520 DOI: 10.1177/2325967118822450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background: Combined partial lateral collateral and complete anterolateral ligament
(PLCCALL) injuries are a specific injury pattern seen in Brazilian jiu-jitsu
(BJJ) because of the knee varus-flexion mechanism that frequently occurs
during grappling. Purpose/Hypothesis: The purpose of this study was to evaluate the incidence of this injury
pattern in a series of BJJ athletes with an acute knee injury and to
evaluate clinical and functional outcomes after nonoperative management at a
minimum follow-up of 1 year. Our hypotheses were that PLCCALL injuries are
common in BJJ and that nonoperative treatment is associated with excellent
clinical outcomes and return to the preinjury level of sport. Study Design: Case series; Level of evidence, 4. Methods: All BJJ athletes who presented with an acute knee injury between July 2013
and June 2017 and who underwent magnetic resonance imaging (MRI) of the knee
were included. A specific emphasis was placed on identifying those whose
imaging demonstrated PLCCALL injury. Clinical evaluation included physical
examination as well as Lysholm and International Knee Documentation
Committee (IKDC) scores. Results: Of the 27 patients analyzed, 7 (25.9%) had MRI-proven PLCCALL injuries. The
mean follow-up after nonoperative management was 41.3 months. The mean IKDC
and Lysholm scores were 94 and 92 before the injury, 26 and 36 at the
initial assessment after the injury, and 83 and 78 at 12-month follow-up,
respectively (P < .00001). All 7 patients had returned
to their preinjury level of sports by the 12-month follow-up. The mean time
between injury and return to competition level was 4.7 months (range, 4-6
months). Conclusion: PLCCALL injury is a specific but infrequent injury pattern in BJJ. The
prognosis of this injury after nonoperative treatment appears to be
excellent. Improved functional scores (IKDC and Lysholm) and changes on MRI
demonstrated that the anterolateral ligament has intrinsic healing
potential, as the images showed complete healing of the previously
documented rupture of the anterolateral ligament from its proximal
attachment.
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Affiliation(s)
| | - Adnan Saithna
- Renacres Hospital, Ormskirk, Lancashire, UK.,School of Science and Technology, Nottingham Trent University, Clifton Campus, East Midlands, UK
| | | | | | - Bertrand Sonnery-Cottet
- Centre Orthopedic Santy, FIFA Medical Center of Excellence, Ramsay-Générale de Santé, Hôpital Privé Jean Mermoz, Lyon, France
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86
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Rustagi SM, Gopal P, Ahuja MS, Arora NC, Sood N. The Anterolateral Ligament of the Knee: Descriptive Anatomy and Clinical Correlation. Indian J Orthop 2019; 53:89-93. [PMID: 30905987 PMCID: PMC6394189 DOI: 10.4103/ortho.ijortho_137_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The anterolateral ligament is a fibrous structure in the anterolateral aspect of the knee. Recently this liagament of the knee has gained spotlight in anatomical and imaging studies and has been designated as a new ligament of the knee joint. The anterolateral ligament (ALL) has been postulated to be a restraint against the anterolateral instability of the knee resulting in a positive pivot shift test. The purpose of this study is to provide detailed anatomical characteristics of ALL in the Indian population. MATERIALS AND METHODS The qualitative and quantitative characteristics of the ALL were observed in 20 embalmed cadaveric specimens. In all but one left male knee specimen (95%) ALL was observed. After isolating the ALL, its length, thickness, width, and points of attachments and dimensions of lateral collateral ligament (LCL) were determined. RESULTS The ALL was consistently present in the anterolateral region of the knee separate from the joint capsule. Its proximal attachment to the femur is anterior and distal to the attachment of the LCL. Distally the superficial fibers of the ALL inserted close to the Gerdy's tubercle at the level of the fibular head, and the deeper fibers merged with the lateral meniscus. The mean length of the ALL was 43.35 mm ± 4.04 mm in flexion and 40.38 mm ± 4.35 mm in extension. The average width of the ALL was 6.98 mm ± 0.95 mm at its origin and 9.36 mm ± 1.07 mm at its insertion. CONCLUSION The ALL is hypothesized to affect internal tibial rotation and plays a role in the pivot shift phenomenon. ALL rupture could be responsible for rotatory laxity after isolated intraarticular reconstruction of the ACL.
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Affiliation(s)
| | - Parikshat Gopal
- Department of Anatomy, Army College of Medical Sciences, New Delhi, India,Address for correspondence: Dr. Parikshat Gopal, Army college of Medical Sciences, Delhi Cantt, New Delhi - 110 018, India. E-mail:
| | - Manish Singh Ahuja
- Department of Anatomy, Army College of Medical Sciences, New Delhi, India
| | | | - Nikhil Sood
- Department of Anatomy, Army College of Medical Sciences, New Delhi, India
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87
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Getgood A, Brown C, Lording T, Amis A, Claes S, Geeslin A, Musahl V. The anterolateral complex of the knee: results from the International ALC Consensus Group Meeting. Knee Surg Sports Traumatol Arthrosc 2019; 27:166-176. [PMID: 30046994 DOI: 10.1007/s00167-018-5072-6] [Citation(s) in RCA: 211] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 07/18/2018] [Indexed: 12/18/2022]
Abstract
The structure and function of the anterolateral complex (ALC) of the knee has created much controversy since the 're-discovery' of the anterolateral ligament (ALL) and its proposed role in aiding control of anterolateral rotatory laxity in the anterior cruciate ligament (ACL) injured knee. A group of surgeons and researchers prominent in the field gathered to produce consensus as to the anatomy and biomechanical properties of the ALC. The evidence for and against utilisation of ALC reconstruction was also discussed, generating a number of consensus statements by following a modified Delphi process. Key points include that the ALC consists of the superficial and deep aspects of the iliotibial tract with its Kaplan fibre attachments on the distal femur, along with the ALL, a capsular structure within the anterolateral capsule. A number of structures attach to the area of the Segond fracture including the capsule-osseous layer of the iliotibial band, the ALL and the anterior arm of the short head of biceps, and hence it is not clear which is responsible for this lesion. The ALC functions to provide anterolateral rotatory stability as a secondary stabiliser to the ACL. Whilst biomechanical studies have shown that these structures play an important role in controlling stability at the time of ACL reconstruction, the optimal surgical procedure has not yet been defined clinically. Concern remains that these procedures may cause constraint of motion, yet no clinical studies have demonstrated an increased risk of osteoarthritis development. Furthermore, clinical evidence is currently lacking to support clear indications for lateral extra-articular procedures as an augmentation to ACL reconstruction. The resulting statements and scientific rationale aim to inform readers on the most current thinking and identify areas of needed basic science and clinical research to help improve patient outcomes following ACL injury and subsequent reconstruction.Level of evidence V.
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Affiliation(s)
- Alan Getgood
- Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, London, ON, N6A 3K7, Canada.
| | | | | | | | | | | | - Volker Musahl
- University of Pittsburgh Medical Centre, Pittsburgh, PA, USA
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88
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Khanna M, Gupte C, Dodds A, Williams A, Walker M. Magnetic resonance imaging appearances of the capsulo-osseous layer of the iliotibial band and femoral attachments of the iliotibial band in the normal and pivot-shift ACL injured knee. Skeletal Radiol 2019; 48:729-740. [PMID: 30593591 PMCID: PMC6456473 DOI: 10.1007/s00256-018-3128-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 11/28/2018] [Accepted: 12/03/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Biomechanical evidence suggests that the anterolateral structures of the knee may be important restraints against anterolateral rotatory instability (ALRI) in the setting of anterior cruciate ligament (ACL) injury. OBJECTIVE To describe the anatomy and presence of injury of the capsule-osseous layer of the iliotibial band (CITB), the iliotibial band, and its deep distal femoral attachments in patients with a 'normal' knee (no pivot-shift bone marrow edema (BME) pattern) and patients with a pivot-shift BME pattern indicative of a pivot-shift injury associated with ACL tears. METHODS Group 1: 20 consecutive patients with no MRI evidence of pivot-shift injury and group 2: 20 consecutive patients with a pivot-shift BME pattern on MRI were identified. Retrospective consensus analysis of the anatomy and appearances of the CITB and the 'proximal' and 'epicondylar' distal femoral attachments of the ITB was performed for each MRI by two experienced musculoskeletal radiologists. RESULTS The positive predictive value (PPV) of CITB injury for pivot-shift ACL injury was 74%, negative predicted Value (NPV) was 80%. The PPV for injury of the 'proximal' ITB femoral attachment with pivot-shift ACL injury was 93%, NPV was 84%. The PPV for 'epicondylar' iliotibial femoral attachment injury was 62%, NPV was 45%. CONCLUSIONS Injury of the CITB and 'proximal' deep femoral attachments of the ITB are good markers for ACL injury even in the absence of a Segond fracture and should be evaluated on all MRIs as they may prove important in the further management of ALRI.
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Affiliation(s)
- Monica Khanna
- Department of Clinical Imaging, Imperial College Healthcare NHS Trust, Praed Street, London, W2 1NY UK
| | - Chimnay Gupte
- Department of Clinical Imaging, Imperial College Healthcare NHS Trust, Praed Street, London, W2 1NY UK
| | | | - Andy Williams
- Fortius Clinic, Fitzhardinghe Street, London, W1H 6EQ UK
| | - Miny Walker
- Department of Clinical Imaging, Imperial College Healthcare NHS Trust, Praed Street, London, W2 1NY UK
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Influence of anterolateral ligament injuries on stability and second-look arthroscopic findings after allograft transtibial anterior cruciate ligament reconstruction. Knee 2019; 26:132-141. [PMID: 30528724 DOI: 10.1016/j.knee.2018.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/14/2018] [Accepted: 10/10/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND The purpose of this study was to evaluate the influence of anterolateral ligament (ALL) injuries on stability and second-look arthroscopic findings after anterior cruciate ligament (ACL) reconstruction. METHODS One-hundred and nineteen consecutive patients underwent a second-look arthroscopic surgery after ACL reconstruction and magnetic resonance imaging (MRI) examination of the ALL. The patients were divided into an ALL intact group (n = 39) and ALL injured group (n = 80). The ALL injuries were divided according to the three anatomical parts of the ALL (femoral, meniscal, and tibial) using MRI evaluation. Stability and clinical results were evaluated using the Lachman test, pivot-shift test, KT-2000 arthrometer, and Lysholm score. On second-look arthroscopy, graft tension and synovial coverage were evaluated. RESULTS The clinical evaluation revealed no significant differences in ALL injury. Although the synovial coverages showed no significant difference (P = 0.113), the second-look arthroscopic findings indicated that tension was statistically significantly dependent on the ALL injury (P < 0.001). In addition, according to the location of the ALL injury, femoral, tibial, and combined ALL injuries showed significant differences in graft tension as compared with the ALL intact group; only the meniscal injuries had no effect on graft tension. CONCLUSION Combined ACL and ALL injuries showed poor graft tension in the second-look arthroscopic findings after allograft transtibial ACL reconstruction, even though no significant differences in clinical outcomes and stability were observed.
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90
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Abstract
Despite several previous articles in the literature, never before have so many studies with regard to anterolateral knee structures been performed. The anterolateral knee complex consists briefly of the iliotibial band, with its proximal and distal attachments, the joint capsule, and the anterolateral ligament (ALL). The recently introduced ALL has several different descriptions, making it difficult to build a consensus with regard to its anatomy. An extensive description of these structures, particularly the iliotibial band and the ALL, with regard to anatomy and imaging, will be provided in this article.
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Affiliation(s)
- Camilo P. Helito
- Hospital Sírio-Libanês
- Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo
| | - Paulo V.P. Helito
- Hospital Sírio-Libanês
- Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo-SP, Brazil
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91
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Burkhart TA, Matthew M, McGuffin WS, Blokker A, Holdsworth D, Degen RM, Getgood A. There Are No Kinematic Differences Between Inframeniscal and Suprameniscal Anterolateral Ligament Injury in the Anterior Cruciate Ligament-Deficient Knee. Am J Sports Med 2018; 46:3391-3399. [PMID: 30388039 DOI: 10.1177/0363546518803359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Previous research demonstrated that the attachment of the anterolateral ligament (ALL) to the lateral meniscus is stiffer and stronger in its tibial attachment than its femoral attachment. How this relates to anterolateral knee stability and lateral meniscal function is unknown. HYPOTHESIS/PURPOSE The hypothesis was that the ALL acts as a peripheral anchor to the lateral meniscus, aiding in anterolateral rotatory stability, and that the inframeniscal fibers of the ALL will provide greater anterolateral rotatory stability because of their greater tensile properties. The purpose was therefore to compare the difference in kinematics of the anterior cruciate ligament (ACL)-deficient knee between the infra- and suprameniscal ALL-sectioned states. STUDY DESIGN Controlled laboratory study. METHODS Eight paired fresh-frozen cadaveric knees were tested in a 5-degree of freedom loading jig under the following loading conditions: 5-N·m internal rotation at 15° incremental angles of flexion and combined 5-N·m internal rotation moment, 10-N·m valgus moment, and 88-N anterior translation force representing a pivot shift test at 0°, 15°, and 30° of flexion. The knees were tested under intact, ACL-deficient, and ACL-/ALL-deficient conditions, with the pairs of knees being randomized to either supra- or inframeniscal ALL sectioning. Resultant joint kinematics and tibiofemoral translations were measured and compared with a 2-way mixed repeated measures analysis of variance. RESULTS Internal rotation increased by 3° after sectioning of the ACL at 0° of knee flexion ( P = .035). At 45° of knee flexion, internal rotation increased significantly by 2° between the ACL-deficient and the ACL-/ALL-deficient conditions ( P = .049). Secondary kinematics of valgus and anterior translation were observed in response to the 5-N·m load after ACL and ALL sectioning. Analysis of the pivot shift showed increases in tibiofemoral translation after sectioning of the ACL, with further translations after sectioning of the ALL. No differences were observed between supra- and inframeniscal ALL sectioning under any of the loading conditions. CONCLUSION An injury to the ALL, coexisting with ACL deficiency, results in only minor increases in knee joint patholaxity. No differences in pivot-shift kinematics or tibiofemoral rotations were observed between the supra- and inframeniscal sectioning of the ALL in the ACL-deficient knee. CLINICAL RELEVANCE Tears of the midbody and/or posterior root attachment of the lateral meniscus are often observed at the time of ACL reconstruction. Increased anterolateral rotatory laxity has been observed in both lateral meniscus- and ALL-deficient states in combination with an ACL injury. While no significant functional relationship was found between the ALL and lateral meniscus, ALL sectioning did result in increased knee joint patholaxity, as demonstrated by composite tibiofemoral rotations.
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Affiliation(s)
- Timothy A Burkhart
- Lawson Health Research Institute/Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada
| | - Manoj Matthew
- Fowler Kennedy Sports Medicine Clinic, Western University, London, Ontario, Canada
| | - W Scott McGuffin
- Fowler Kennedy Sports Medicine Clinic, Western University, London, Ontario, Canada
| | - Alexandra Blokker
- Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada
| | - David Holdsworth
- Department of Medical Biophysics, Western University, London, Ontario, Canada
| | - Ryan M Degen
- Fowler Kennedy Sports Medicine Clinic/Department of Surgery, Western University, London, Ontario, Canada
| | - Alan Getgood
- Fowler Kennedy Sports Medicine Clinic/Department of Surgery, Western University, London, Ontario, Canada
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92
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Norris M, Corbo G, Banga K, Johnson M, Sandig M, Smallman T, Getgood A, Burkhart TA. The biomechanical and morphological characteristics of the ligamentum mucosum and its potential role in anterior knee pain. Knee 2018; 25:1134-1141. [PMID: 30414794 DOI: 10.1016/j.knee.2018.08.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND The ligamentum mucosum is composed of dense regular connective tissue and traverses from the distal femur to the infrapatellar fat pad. While the gross and histologic morphology has been studied, there is currently no evidence concerning the biomechanical properties of the ligamentum mucosum and the potential of anterior knee pain. The purpose of this study was to determine the anatomical, mechanical and histological properties of the ligamentum mucosum. METHODS Dissections were performed on cadaveric knee specimens (N = 18) and histological analysis (n = 6) was performed to define the anatomical characteristics of the ligamentum mucosum using standard hematoxylin and eosin (H&E), Masson's trichrome, and immunohistochemical methods. Biomechanical testing (n = 5) was conducted to determine the tensile properties of the ligamentum mucosum. The peak load at failure, stiffness, and strain were analyzed. RESULTS Sixty-four percent of the knees had a ligamentum mucosum and the histological analysis confirmed it to be composed of dense regular connective tissue. Small peripheral nerves were identified in the junction between the ligamentum mucosum and the fat pad. The average (SD) peak force of failure, stiffness, and strain were 31.9 N (19.0), 5.1 N/mm (3.59), and 0.83 (0.14), respectively. CONCLUSIONS The tensile strength and stiffness of the ligamentum mucosum is considerably less than the primary stabilizers of the knee joint. Based on these findings, it is improbable that the ligamentum mucosum has a meaningful effect on the kinematics of the extensor mechanism; perturbations of the tissue and the connected infrapatellar fat pad could potentially play a role in the pathogenesis of anterior knee pain.
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Affiliation(s)
- Madeleine Norris
- Department of Anatomy & Cell Biology, Western University, London, ON, Canada.
| | - Gillian Corbo
- Department of Anatomy & Cell Biology, Western University, London, ON, Canada
| | | | - Marjorie Johnson
- Department of Anatomy & Cell Biology, Western University, London, ON, Canada
| | - Martin Sandig
- Department of Anatomy & Cell Biology, Western University, London, ON, Canada.
| | - Thomas Smallman
- Auburn Community Hospital, Auburn, NY, USA; Upstate Medical University, Syracuse, NY, USA
| | - Alan Getgood
- Department of Surgery, Western University, London, ON, Canada.
| | - Timothy A Burkhart
- Lawson Health Research Institute, Department of Surgery, and Mechanical and Materials Engineering, Western University, 1151 Western Rd, London, ON N6A 3K7, Canada.
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93
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Abstract
Recent insights into the structure and function of the anterolateral ligament (ALL) of the knee has resulted in a recognition of its contribution in rotational control of the knee. Several ALL reconstruction techniques have been described in the literature. This article describes, with video illustration, a percutaneous repair technique using suture tape augmentation. A tendon graft is not needed. This technique allows early mobilization and encourages natural healing of the ligament by protecting the ligament during the healing phase as a secondary stabilizer.
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94
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De Carli A, Monaco E, Mazza D, Argento G, Redler A, Proietti L, Gaj E, Ferretti A. Assessment of the Anterolateral Ligament of the Knee by Magnetic Resonance Imaging. JOINTS 2018; 6:153-156. [PMID: 30582102 PMCID: PMC6301852 DOI: 10.1055/s-0038-1675163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 09/08/2018] [Indexed: 01/20/2023]
Abstract
Purpose
The purpose of this study was to describe the anatomy of the anterolateral ligament (ALL) of the knee by the use of 1.5 Tesla (T) magnetic resonance imaging (MRI) in a series of young patients without knee injuries.
Methods
Subjects aged 18 years or older without an anterior cruciate ligament injury, as confirmed on MRI, were included. MRI examinations were all performed on 1.5 T scans. The ALL was defined as the low signal band originating from the region of the lateral epicondyle of the femur, crossing the proximal surface of the lateral collateral ligament, deep to the iliotibial band, and inserting onto the tibia between the Gerdy's tubercle and the fibular head.
Results
Twenty-six patients met the eligibility criteria and were enrolled into the study. In one patient, it was not possible to visualize the ALL. In all the other subjects, the ligament originated anterior and distal to the lateral epicondyle and inserted on the proximal tibia approximately 5 mm below the joint line and just distal to the Gerdy's tubercle. It had an average length of 33 ± 1.2 mm, an average width of 5.5 ± 0.3 mm, and an average thickness of 2 mm.
Conclusion
The ALL is a distinct structure of the anterolateral capsule that can be easily identified using 1.5 T MRI scans.
Level of Evidence
This is a level IV, observational study.
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Affiliation(s)
- Angelo De Carli
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Edoardo Monaco
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Daniele Mazza
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Giuseppe Argento
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Andrea Redler
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Lorenzo Proietti
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Edoardo Gaj
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
| | - Andrea Ferretti
- Orthopaedic Unit and "Kirk Kilgour" Sports Injury, S. Andrea Hospital, University of Rome "Sapienza," Rome, Italy
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95
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Olewnik Ł, Gonera B, Kurtys K, Podgórski M, Polguj M, Sibiński M, Topol M. The Anterolateral Ligament of the Knee: A Proposed Classification System. Clin Anat 2018; 31:966-973. [PMID: 30144325 DOI: 10.1002/ca.23267] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/08/2018] [Accepted: 08/17/2018] [Indexed: 12/30/2022]
Abstract
The anterolateral ligament (ALL) is a potential stabilizer of the knee and cooperates with the anterior cruciate ligament (ACL). It originates on the lateral epicondyle of the femur, to which it is mainly posterior and proximal; insertion is posterior to Gerdy's tubercle. Its anatomical characteristics vary. Recent publications have focused on morphological variations concerning mainly the femoral and tibial attachments, and on morphometric measurements. Histological and cystochemical examinations have also been performed. Classical anatomical dissection was performed on 111 lower limbs (25 isolated and 86 paired) fixed in 10% formalin. The knee region was dissected using traditional techniques and the morphological features of the ALL were assessed: morphometric measurements and the types of ALL. The ALL was present in 70 individuals (37 woman and 33 men). In 30 cases, it was absent symmetrically, and in 11, it was present on just one side (P = 0.0011). The ALL was morphologically very variable. In type I (the most common form - 64.3%), a single band traveled parallel to the fibular collateral ligament (FCL); in type II the band crossed it. In type III, the origin was located on the lateral epicondyle of the femur and also on the lateral-posterior surface of the joint capsule, and the insertion was in the deep fascia of the leg: this type could be called a capsule. Type IV was characterized by a double ALL, type IIb by ligaments that bifurcated, and type V by the ALL starting directly from the FCL rather than the femoral epicondyle. The ALL is characterized by high morphological variability, both in its femoral and in its tibial attachments and in its course. Clin. Anat. 31:966-973, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Łukasz Olewnik
- Department of Normal and Clinical Anatomy, Interfaculty Chair of Anatomy and Histology, Medical University of Lodz, Poland
| | - Bartosz Gonera
- Department of Normal and Clinical Anatomy, Interfaculty Chair of Anatomy and Histology, Medical University of Lodz, Poland
| | - Konrad Kurtys
- Department of Normal and Clinical Anatomy, Interfaculty Chair of Anatomy and Histology, Medical University of Lodz, Poland
| | - Michał Podgórski
- Department of Diagnostic Imaging Lodz, Polish Mother's Memorial Hospital Research Institute, Poland
| | - Michał Polguj
- Department of Angiology, Interfaculty Chair of Anatomy and Histology, Medical University of Lodz, Poland
| | - Marcin Sibiński
- Clinic of Orthopaedics and Paediatric Orthopaedics, Medical University of Lodz, Poland
| | - Mirosław Topol
- Department of Normal and Clinical Anatomy, Interfaculty Chair of Anatomy and Histology, Medical University of Lodz, Poland
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96
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Daggett M, Stephenson C, Dobson J, Whitaker A, Redler A, Monaco E, Wright B, Saithna A, Sonnery-Cottet B. Anatomic and Histological Study of the Anterolateral Aspect of the Knee: A SANTI Group Investigation. Orthop J Sports Med 2018; 6:2325967118799970. [PMID: 30345320 PMCID: PMC6187433 DOI: 10.1177/2325967118799970] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background: The structure and function of the anterolateral aspect of the knee have been significantly debated, with renewed interest in this topic since the description of the anterolateral ligament (ALL). Purpose: To define and describe the distinct structures of the lateral knee and to correlate the macroscopic and histologic anatomic features. Study Design: Descriptive laboratory study. Methods: Twelve fresh-frozen human cadavers were used for anatomic analysis. In the left knee, a layer-by-layer dissection and macroscopic analysis were performed. In the right knee, an en bloc specimen was obtained encompassing an area from the Gerdy tubercle to the posterior fibular head and extending proximally from the anterior aspect to the posterior aspect of the lateral femoral epicondyle. The en bloc resection was then frozen, sliced at the level of the joint line, and reviewed by a musculoskeletal pathologist. Results: Macroscopically, the lateral knee has 4 main layers overlying the capsule of the knee: the aponeurotic layer, the superficial layer including the iliotibial band (ITB), the deep fascial layer, and the ALL. Histologically, 8 of 12 specimens demonstrated 4 consistent, distinct structures: the ITB, the ALL, the lateral collateral ligament, and the meniscus. Conclusion: The lateral knee has a complex orientation of layers and fibers. The ALL is a distinct structure from the ITB and is synonymous to the previously described capsulo-osseous layer of the ITB. Clinical Relevance: Increasingly, lateral extra-articular procedures are performed at the time of anterior cruciate ligament reconstruction. Understanding the anatomic features of the anterolateral aspect of the knee is necessary to understand the biomechanics and function of the structures present and allows surgeons to attempt to replicate those anatomic characteristics when performing extra-articular reconstruction.
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Affiliation(s)
- Matt Daggett
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
- Matt Daggett, DO, Kansas City University of Medicine and Biosciences, 1750 Independence Ave, Kansas City, MO 64106, USA () (Twitter: @DrMattDaggett)
| | - Clark Stephenson
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
| | - John Dobson
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
| | - Amy Whitaker
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
| | - Andrea Redler
- II School of Medicine, Sant’Andrea Hospital, Kirk Kilgour Sports Injury Center, University of Rome “La Sapienza,” Rome, Italy
| | - Edoardo Monaco
- II School of Medicine, Sant’Andrea Hospital, Kirk Kilgour Sports Injury Center, University of Rome “La Sapienza,” Rome, Italy
| | - Barth Wright
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
| | - Adnan Saithna
- Renacres Ln, Ormskirk, Lancashire, Halsall, Ormskirk, UK
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Barrera CM, Arizpe A, Wodicka R, Lesniak BP, Baraga MG, Kaplan L, Jose J. Anterolateral ligament injuries on magnetic resonance imaging and pivot-shift testing for rotational laxity. J Clin Orthop Trauma 2018; 9:312-316. [PMID: 30449977 PMCID: PMC6224696 DOI: 10.1016/j.jcot.2017.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/05/2017] [Accepted: 10/07/2017] [Indexed: 01/26/2023] Open
Abstract
Maintaining anterolateral rotational stability of the knee requires a complex set of structures, most notably the anterior cruciate ligament. However, lateral knee structures such as the anterolateral ligament (ALL) also play an important role. There has been controversy over the role the ALL plays in an ACL deficient knee to maintain rotational stability. In this study, we examined ACL deficient knees with and without intact ALLs, for rotatory laxity using a pivot shift examination. This was graded using International Knee Document Committee (IKDC) criteria. MRI was used to view the ALL and its status. We found no statistically significant difference in rotational stability of ACL deficient knees, with or without intact ALLs. We did however find a statistically significant association between injury to the ALL and other concomitant lateral structures such as the lateral collateral ligament, biceps femoris tendon, and iliotibial band. This supports that the ALL works in concert with the other lateral structures in the knee and the ACL, to provide rotational stability. This suggests that as an isolated structure, the ALL's contribution to clinical rotational stability is not significant, even in the presence of an ACL tear.
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Affiliation(s)
- Carlos M. Barrera
- Miller School of Medicine, University of Miami, Coral Gables, FL, United States
| | - Azael Arizpe
- Department of Orthopedic Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Ross Wodicka
- Department of Orthopedic Surgery, Holy Cross Hospital, Fort Lauderdale, FL, United States
| | - Bryson P. Lesniak
- Department of Orthopedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Michael G. Baraga
- Department of Orthopedic Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Lee Kaplan
- Department of Orthopedic Surgery, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
| | - Jean Jose
- Department of Radiology, University of Miami Miller School of Medicine, Jackson Memorial Hospital, Miami, FL, United States
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98
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Noyes FR, Huser LE, West J, Jurgensmeier D, Walsh J, Levy MS. Two Different Knee Rotational Instabilities Occur With Anterior Cruciate Ligament and Anterolateral Ligament Injuries: A Robotic Study on Anterior Cruciate Ligament and Extra-articular Reconstructions in Restoring Rotational Stability. Arthroscopy 2018; 34:2683-2695. [PMID: 30173809 DOI: 10.1016/j.arthro.2018.04.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/18/2018] [Accepted: 04/25/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine the effect of 2 extra-articular reconstructions on pivot-shift rotational stability and tibial internal rotation as a basis for clinical recommendations. METHODS A robotic simulator tested 15 cadaver knees. Group 1 (anterior cruciate ligament [ACL] cut) underwent ACL bone-patellar tendon-bone reconstruction followed by sectioning the anterolateral structures and an extra-articular, manual-tension iliotibial band (ITB) tenodesis. Group 2 (ACL intact) tested the rotational stabilizing effect of a low-tension ITB tenodesis before and after sectioning the anterolateral ligament/ITB structures. Lateral and medial tibiofemoral compartment translations and internal-external tibial rotations were measured under Lachman, 5N·m tibial rotation, and 2 pivot-shift simulations using 4-degree-of-freedom loading. Statistical equivalence was defined within 2 mm tibiofemoral compartment translation and 2° tibial rotation at P < .05. RESULTS The bone-patellar tendon-bone ACL reconstruction (group 1) restored pivot-shift lateral compartment translation within 0.7 mm (95% confidence interval [CI], -0.6 to 1.9; P = .70) of normal. The internal rotation limit was not affected by ACL sectioning or reconstruction. After anterolateral ligament/ITB sectioning there was no change in pivot-shift lateral compartment translation, however internal rotation increased 2.9° (95% CI, 0.6-5.2; P = .99) at 90° flexion. The manual-tension ITB tenodesis (fixated 13-22 N tension) decreased pivot-shift lateral compartment translation 4.8 mm (95% CI, 1.4-8.1; P = .99) and internal rotation by 21.9° (95% CI, 13.2-30.6; P = .99) at 90° flexion. The ACL forces decreased 45.8% in the pivot-shift test. In group 2 knees, with the ACL intact, the anterolateral ligament/ITB sectioning had no effect on pivot-shift translations; however, the internal rotation limit increased by 4.3° (95% CI, 1.9-6.8; P = .99) at 60° flexion. The low-tension ITB tenodesis (fixated 8.9 N tension) had no effect on pivot-shift translations and corrected internal tibial rotation with a mild overconstraint of 4.2° (95% CI, 1.9-6.8; P = .99) at 60° flexion. CONCLUSIONS A low-tension ITB tenodesis, fixated at neutral tibial rotation to avoid constraining internal tibial rotation, has no effect in limiting abnormal pivot-shift subluxations. CLINICAL RELEVANCE A low-tension ITB tenodesis has limited clinical utilization as the pivot-shift subluxations are not affected, assuming appropriate tensioning to not overconstrain internal tibial rotation.
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Affiliation(s)
- Frank R Noyes
- Cincinnati Sports Medicine and Orthopaedic Center, Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A
| | - Lauren E Huser
- Cincinnati Sports Medicine and Orthopaedic Center, Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A..
| | - John West
- Cincinnati Sports Medicine and Orthopaedic Center, Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A
| | - Darin Jurgensmeier
- Cincinnati Sports Medicine and Orthopaedic Center, Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A
| | - James Walsh
- Cincinnati Sports Medicine and Orthopaedic Center, Mercy Health, Cincinnati, Ohio, U.S.A.; The Noyes Knee Institute, Cincinnati, Ohio, U.S.A
| | - Martin S Levy
- College of Business, Operations and Business Analytics, University of Cincinnati, Cincinnati, Ohio, U.S.A
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99
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Getgood A. Editorial Commentary: Imaging of the Anterolateral Ligament of the Knee: The MR(eye) Sees What the Brain Knows…. Arthroscopy 2018; 34:2739-2742. [PMID: 30173815 DOI: 10.1016/j.arthro.2018.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 07/02/2018] [Indexed: 02/02/2023]
Abstract
Significant focus has recently been placed on the contribution of the anterolateral ligament (ALL) to controlling anterolateral rotatory laxity of the anterior cruciate ligament (ACL) injured knee. Many recent studies have investigated the use of magnetic resonance imaging and ultrasound on determining the degree of ALL injury and whether this is correlated to high-grade rotatory laxity. Unfortunately, most studies lack a reference standard, and as such it is challenging to determine whether it truly is the ALL that is injured or if the capsule-osseous layer and deep iliotibial band are involved. Historic literature has demonstrated the importance of these other structures having been noted to be injured at the time of ACL reconstruction. As such, it is clear that high-grade rotatory laxity does not result from an isolated ACL injury. We therefore must remain open to the idea that it is not just the ALL that may cause this injury pattern, and optimal solutions to address this patholaxity have yet to be fully determined.
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Affiliation(s)
- Alan Getgood
- Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, London, Ontario, Canada.
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100
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Helito CP, Helito PVP, Leão RV, Louza ICF, Bordalo-Rodrigues M, Cerri GG. Magnetic resonance imaging assessment of the normal knee anterolateral ligament in children and adolescents. Skeletal Radiol 2018; 47:1263-1268. [PMID: 29627859 DOI: 10.1007/s00256-018-2933-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/18/2018] [Accepted: 03/19/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To characterize the anterolateral ligament (ALL) in normal knees of pediatric patients by magnetic resonance imaging (MRI) and to establish the age at which it is possible to visualize its presence and whether there are differences between male and female populations. MATERIALS AND METHODS MRI scans of patients younger than 18 years were retrospectively evaluated. The exams were performed in 1.5-T scanners. The ALL was characterized dichotomously as visualized or not visualized based on the assessment criteria of this structure in adult patients. The characterization of the ALL was divided according to sex and age. RESULTS A total of 363 knee MRI scans were evaluated, 200 from male and 163 from female patients. The ALL was more frequently visualized in coronal sequences. The mean ALL visualization in pediatric patients was 69.4% and was lower in younger patients and higher in patients close to 18 years. It was not possible to visualize the ALL in female patients younger than 7 years or in male patients younger than 6 years. In patients between 17 and 18 years of age, the ALL was visualized in 100% of cases in both sexes. CONCLUSIONS Visualization of the ALL increased with age in both sexes. Only after age 13 in females and age 15 in males was visualization of the ALL close to 70%; thus, below these ages, we believe that the characterization of this structure with conventional protocols is still imprecise.
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Affiliation(s)
- Camilo Partezani Helito
- Hospital Sírio Libanês, São Paulo, Brazil. .,Grupo de Joelho, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
| | - Paulo Victor Partezani Helito
- Hospital Sírio Libanês, São Paulo, Brazil.,Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Renata Vidal Leão
- Hospital Sírio Libanês, São Paulo, Brazil.,Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Marcelo Bordalo-Rodrigues
- Hospital Sírio Libanês, São Paulo, Brazil.,Grupo de Radiologia Musculo-esquelética, Instituto de Ortopedia e Traumatologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Giovanni Guido Cerri
- Hospital Sírio Libanês, São Paulo, Brazil.,Instituto de Radiologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil
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