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Kolin DA, Jones RH, Heyworth BE, Jivanelli B, Fabricant PD. No difference in stability among various knee flexion angles during fixation of anterolateral ligament reconstruction or lateral extra-articular tenodesis: A systematic review and meta-analysis of biomechanical studies. J Exp Orthop 2024; 11:e12079. [PMID: 39015341 PMCID: PMC11250156 DOI: 10.1002/jeo2.12079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 07/18/2024] Open
Abstract
Purpose The purpose of this study was to investigate the effect of anterolateral ligament reconstruction (ALLR) or lateral extra-articular tenodesis (LET) fixation at low versus high flexion angles during anterior cruciate ligament reconstruction (ACLR) on rotation or translational knee stability. Methods The inclusion criteria for this study were (1) cadaveric study, (2) cadaveric specimens underwent ACLR, (3) cadaveric specimen underwent ALLR or LET and (4) specimen preparation technique described the knee flexion angle at the time of ALLR or LET tensioning and fixation. A priori, 'low flexion' was defined as 0-30° and 'high flexion' was defined as 60-90° at graft fixation. Main outcomes of interest included internal rotation and anterior translation. Results Data from 92 cadaveric knees (from 9 studies) were extracted and included in the meta-analysis. The mean pooled value for internal rotation was 10.1° (95% confidence interval [CI], 5.7-14.5°) for the low flexion group and 11.5° (95% CI, 7.4-15.7°) for the high flexion group (n.s.). The mean pooled value for anterior translation was 4.3 mm (95% CI, 0.5-8.1 mm) for the low flexion group and 3.0 mm (95% CI, 1.1-5.0 mm) for the high flexion group (n.s.). Conclusion This meta-analysis of existing biomechanical research found that the rotational and translational stability of the knee were not significantly different between scenarios in which ALLR or LET fixation was performed at low knee flexion angles (0-30°) versus high knee flexion angles (60-90°). Level of Evidence Level IV.
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Affiliation(s)
| | - Ruth H. Jones
- Pediatric Orthopedic Surgery ServiceNew YorkNew YorkUSA
| | - Benton E. Heyworth
- Orthopedics and Sports Medicine DepartmentBoston Children's HospitalBostonMassachusettsUSA
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Shatrov J, Bonacic Bartolin P, Holthof SR, Ball S, Williams A, Amis AA. A Comparative Biomechanical Study of Alternative Medial Collateral Ligament Reconstruction Techniques. Am J Sports Med 2024; 52:1505-1513. [PMID: 38551132 PMCID: PMC11064462 DOI: 10.1177/03635465241235858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 01/03/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND There is little evidence of the biomechanical performance of medial collateral ligament (MCL) reconstructions for restoring stability to the MCL-deficient knee regarding valgus, external rotation (ER), and anteromedial rotatory instability (AMRI). HYPOTHESIS A short isometric reconstruction will better restore stability than a longer superficial MCL (sMCL) reconstruction, and an additional deep MCL (dMCL) graft will better control ER and AMRI than single-strand reconstructions. STUDY DESIGN Controlled laboratory study. METHODS Nine cadaveric human knees were tested in a kinematics rig that allowed tibial loading while the knee was flexed-extended 0° to 100°. Optical markers were placed on the femur and tibia and displacements were measured using a stereo camera system. The knee was tested intact, and then after MCL (sMCL + dMCL) transection, and loaded in anterior tibial translation (ATT), ER, varus-valgus, and combined ATT + ER (AMRI loading). Five different isometric MCL reconstructions were tested: isolated long sMCL, a short construct, each with and without dMCL addition, and isolated dMCL reconstruction, using an 8 mm-wide synthetic graft. RESULTS MCL deficiency caused an increase in ER of 4° at 0° of flexion (P = .271) up to 14° at 100° of flexion (P = .002), and valgus laxity increased by 5° to 8° between 0° and 100° of flexion (P < .024 at 0°-90°). ATT did not increase significantly in isolated MCL deficiency (P > .999). All 5 reconstructions restored native stability across the arc of flexion apart from the isolated long sMCL, which demonstrated residual ER instability (P≤ .047 vs other reconstructions). CONCLUSION All tested techniques apart from the isolated long sMCL graft are satisfactory in the context of restoring the valgus, ER, and AMRI stability to the MCL-deficient knee in a cadaveric model. CLINICAL RELEVANCE Contemporary MCL reconstruction techniques fail to control ER and therefore AMRI as they use a long sMCL graft and do not address the dMCL. This study compares 5 MCL reconstruction techniques. Both long and short isometric constructs other than the long sMCL achieved native stability in valgus and ER/AMRI. Double-strand reconstructions (sMCL + dMCL) tended to provide more stability. This study shows which reconstructions demonstrate the best biomechanical performance, informs surgical reconstruction techniques for AMRI, and questions the efficacy of current popular techniques.
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Affiliation(s)
- Jobe Shatrov
- Imperial College London, London, United Kingdom
- Fortius Clinic, London, United Kingdom
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Van de Velde SK, Telfer S, van Arkel ERA, Schmale GA. A lateral extra-articular tenodesis without additional hardware: Surgical technique and biomechanical comparison with an anatomic anterolateral ligament reconstruction in the augmentation of anterior cruciate ligament reconstruction. Knee 2024; 47:112-120. [PMID: 38394990 DOI: 10.1016/j.knee.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/22/2023] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND The aims of this study were to describe a lateral extra-articular tenodesis (LET) using no additional hardware and compare the tibiofemoral kinematics of anterior cruciate ligament (ACL) reconstruction augmented with either the LET or a standard anatomic anterolateral ligament (ALL) reconstruction using intra-tunnel fixation. METHODS Ten cadaveric knees were mounted on a robotic testing system and underwent a kinematic assessment of anterior tibial translation and internal tibial rotation under a simulated pivot-shift in the following states: ACL-intact, ACL-sectioned, ACL-sectioned/anterolateral complex (ALC)-sectioned, ACL-reconstructed/ALC-sectioned, ACL-reconstructed/ALL-reconstructed, and ACL-reconstructed/LET. For the LET, an iliotibial autograft was passed under the fibular collateral ligament and secured to the femur with the pull sutures of the ACL reconstruction femoral cortical suspensory fixation device, positioned at the distal ridge of Kaplan's fibers. RESULTS Anterior tibial translation was restored to normal by ACL reconstruction without meaningful benefit of augmentation with LET or ALL. ACL reconstruction restored internal tibial rotation close to normal between 0° and 30°, but increased internal tibial rotation persisted between 45° and 90°. Augmentation of ACL reconstruction with the LET reduced internal rotation close to normal between 45° and 90°, whereas increased internal rotation persisted after ALL reconstruction. CONCLUSION ACL reconstruction and LET are complementary in controlling tibiofemoral kinematics of knees with a combined ACL and ALC injury: ACL reconstruction restored native tibiofemoral kinematics except for internal rotation at flexion greater than 30°. The increased internal rotation at flexion greater than 30° was restored to normal with an LET, but not with an ALL reconstruction.
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Affiliation(s)
- Samuel K Van de Velde
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, NY, USA; Department of Orthopaedic Surgery, Haaglanden Medical Center, The Hague, the Netherlands; Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA; Department of Orthopedic Surgery, Seattle Children's Hospital, Seattle, WA, USA.
| | - Scott Telfer
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA
| | - Ewoud R A van Arkel
- Department of Orthopaedic Surgery, Haaglanden Medical Center, The Hague, the Netherlands
| | - Gregory A Schmale
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA; Department of Orthopedic Surgery, Seattle Children's Hospital, Seattle, WA, USA
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Lima LHPD, Gomes JLE. Must a Knee with Anterior Cruciate Ligament Deficiency and High-grade Pivot Shift Test Present an Increase in Internal Rotation? Rev Bras Ortop 2024; 59:e82-e87. [PMID: 38524720 PMCID: PMC10957268 DOI: 10.1055/s-0044-1779316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 05/29/2023] [Indexed: 03/26/2024] Open
Abstract
Objective: Rupture of the anterior cruciate ligament (ACL) is one of the most common injuries in athletes and is often associated with damage to anterolateral structures. This combination of injuries presents itself clinically as a high-grade pivot shift test. The hypothesis of this study is that patients with ACL deficiency and high-grade pivot shift test should have an increased internal knee rotation. Methods: Twenty-two patients were tested. After effective spinal anesthesia, two tests were performed with the patient in supine position. First, the bilateral pivot shift test was performed manually, and its grade was recorded. Then, with the knee flexed to 90 degrees, the examiner drew the projection of the foot in a neutral position and in maximum internal rotation, and the angle of internal rotation was measured from the axes built between the central point of the heel and the hallux. Results: In the ACL-deficient knee, it was observed that there is a statistically significant average internal rotation (IR) delta of 10.5 degrees between the groups when not adjusted for age, and 10.6 degrees when adjusted for age. Conclusions: Knees with ACL deficiency and with pivot shift test grade I do not show increased internal rotation in relation to knees with intact ACL. Knees with ACL deficiency and with pivot shift test grades II and III show increased internal rotation in comparison to healthy knees.
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Bechis M, Rosso F, Blonna D, Rossi R, Bonasia DE. Lateral Extra-Articular Tenodesis with Indirect Femoral Fixation Using an Anterior Cruciate Ligament Reconstruction Suspensory Device. J Clin Med 2024; 13:377. [PMID: 38256513 PMCID: PMC10816928 DOI: 10.3390/jcm13020377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND The lateral extra-articular tenodesis (LET) procedure associated with anterior cruciate ligament (ACL) reconstruction can be considered in selected patients to diminish the risk of persistent rotatory instability and achieve a protective effect on the graft. Several techniques have been described in the literature to treat rotatory instability. Usually, a strip of the iliotibial band (ITB) is harvested from its middle while leaving the distal insertion, then passed underneath the lateral collateral ligament and fixed on the lateral aspect of the distal femur with various fixation methods such as staples, screws, anchors or extracortical suspensory devices. Despite their effectiveness, these fixation methods may be associated with complications such as lateral pain, over-constraint and tunnel convergence. METHODS This study presents a detailed surgical description of a new technique to perform an LET during ACL reconstruction with any type of graft fixing the ITB strip with the sutures of the ACL femoral button, comparing its pros and cons in relation to similar techniques found in the literature. CONCLUSIONS This technique represents a reproducible, easy to learn and inexpensive solution to perform a lateral extra-articular tenodesis associated with an ACL reconstruction using the high-resistance sutures of the femoral button.
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Affiliation(s)
- Marco Bechis
- AO Ordine Mauriziano Hospital, Department of Orthopedics and Traumatology, University of Torino, 10124 Turin, Italy
| | | | | | | | - Davide Edoardo Bonasia
- AO Ordine Mauriziano Hospital, Department of Orthopedics and Traumatology, University of Torino, 10124 Turin, Italy
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Lee DH, Kim CH, Kim TH, Kim SG. Sectioning of the Anterolateral Ligaments in Anterior Cruciate Ligament Sectioned Knees Increases Internal Rotation of the Knee Joint: A Systematic Review and Meta-analysis of Cadaveric Studies. Arthroscopy 2023; 39:1692-1701. [PMID: 36708744 DOI: 10.1016/j.arthro.2022.12.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 12/25/2022] [Accepted: 12/30/2022] [Indexed: 01/27/2023]
Abstract
PURPOSE To investigate whether anterolateral ligament (ALL) sectioning (sALL) in the anterior cruciate ligament (ACL)-sectioned (sACL) knee increases the anterior tibial translation (ATT) or internal rotation (IR) of the knee from previous cadaveric biomechanical studies. METHODS Multiple comprehensive literature databases, including PubMed (MEDLINE), EMBASE, and Cochrane Library, were searched for studies evaluating the in vitro biomechanical function of ALL. This meta-analysis compared the increased ATT and IR between the sACL and sACL + sALL knees at 30°, 60°, and 90° of knee flexion. Thresholds of 2 mm for the difference in ATT and 2° for the difference in IR were considered to be clinically significant. RESULTS Thirteen cadaveric biomechanical studies were included. All 13 studies satisfied the threshold for a satisfactory methodological quality (Quality Appraisal for Cadaveric Studies score >75%). At 30° of knee flexion, the meta-analysis showed a greater increase in ATT in the sACL + sALL knees than in the sACL knees by 1.23 mm (95% confidence interval [CI], 0.62-1.84; P < .0001). However, the mean difference was less than the minimal clinically significant difference (<2 mm). The meta-analysis also showed a greater increase in IR in the sACL + sALL knees than in the sACL knees at 30° (mean difference [MD]: 2.24°; 95% CI: 1.39-3.09; P < .00001), 60° (MD: 2.77°; 95% CI: 1.88-3.67; P < .00001), and 90° (MD: 2.29°; 95% CI: 1.42-3.15; P < .00001) of knee flexion. The differences in IR at 30°, 60°, and 90° of knee flexion were clinically relevant (>2°). CONCLUSIONS Despite the different experimental setups and protocols between studies, the meta-analysis of biomechanical cadaveric studies showed that sectioning of the ALL in sACL knees increased IR at 30°, 60°, and 90° of knee flexion. CLINICAL RELEVANCE The results of this systematic review and meta-analysis suggest that ALL contributes to IR in ACL-deficient knees at 30°, 60°, and 90° of flexion.
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Affiliation(s)
- Dae-Hee Lee
- Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Chung-Hyun Kim
- Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Tae Ho Kim
- Department of Orthopaedic Surgery, National Medical Center, Seoul, Republic of Korea
| | - Sang-Gyun Kim
- Department of Orthopaedic Surgery, National Medical Center, Seoul, Republic of Korea.
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Sigloch M, Mayr R, Glodny B, Coppola C, Hoermann R, Schmoelz W. Modified Lemaire Tenodesis Forces in Cadaveric Specimens Are Not Affected by Random Small-Scale Variations in the Femoral Insertion Point During Active Knee Joint Flexion-Extension. Arthrosc Sports Med Rehabil 2023; 5:e799-e807. [PMID: 37388897 PMCID: PMC10300583 DOI: 10.1016/j.asmr.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 04/16/2023] [Indexed: 07/01/2023] Open
Abstract
Purpose To directly measure lateral extra-articular tenodesis (LET) forces supporting anterior cruciate ligament reconstruction (ACLR) during dynamic flexion-extension cycles induced by simulated active muscle forces, to investigate the influence of random surgical variation in the femoral LET insertion point around the target insertion position, and to determine potential changes to the extension behavior of the knee joint in a cadaveric model. Methods After iatrogenic anterior cruciate ligament deficiency and simulated anterolateral rotatory instability, 7 fresh-frozen cadaveric knee joints were treated with isolated ACLR followed by combined ACLR-LET. The specimens were tested on a knee joint test bench during active dynamic flexion-extension with simulated muscle forces. LET forces and the degree of knee joint extension were measured. Random variation in the LET insertion point around the target insertion position was postoperatively quantified by computed tomography. Results In extension, the median LET force increased to 39 ± 2 N (95% confidence interval [CI], 36 to 40 N). In flexion over 70°, the LET was offloaded (2 ± 1 N; 95% CI, 0 to 2 N). In this study, small-scale surgical variation in the femoral LET insertion point around the target position had a negligible effect on the graft forces measured. We detected no difference in the degree of knee joint extension after combined ACLR-LET (median, 1.0° ± 3.0°; 95% CI, -6.2° to 5.2°) in comparison with isolated ACLR (median, 1.1° ± 3.3°; 95% CI, -6.7° to 6.1°; P = .62). Conclusions LET forces in combined ACLR-LET increased to a limited extent during active knee joint flexion-extension independent of small-scale variation around 1 specific target insertion point. Combined ACLR-LET did not change knee joint extension in comparison with isolated ACLR under the testing conditions used in this biomechanical study. Clinical Relevance Low LET forces can be expected during flexion-extension of the knee joint. Small-scale deviations in the femoral LET insertion point around the target insertion position in the modified Lemaire technique might have a minor effect on graft forces during active flexion-extension.
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Affiliation(s)
- Maximilian Sigloch
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Raul Mayr
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Bernhard Glodny
- Department of Radiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Coppola
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Romed Hoermann
- Institute for Clinical and Functional Anatomy, Medical University of Innsbruck, Innsbruck, Austria
| | - Werner Schmoelz
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
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Mogoş Ş, D'Ambrosi R, Antonescu D, Stoica IC. Combined Anterior Cruciate Ligament and Anterolateral Ligament Reconstruction Results in Superior Rotational Stability Compared with Isolated Anterior Cruciate Ligament Reconstruction in High Grade Pivoting Sport Patients: A Prospective Randomized Clinical Trial. J Knee Surg 2023; 36:54-61. [PMID: 33932949 DOI: 10.1055/s-0041-1729621] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The purpose of the current randomized clinical trial (RCT) was to evaluate the clinical outcomes of combined anterior cruciate ligament (ACL) and anterolateral ligament (ALL) reconstruction and to compare them with those of isolated ACL reconstruction. The hypothesis was that combined ACL and ALL reconstruction will result in superior clinical outcomes in terms of the rotational stability of the knee. This prospective RCT included 57 patients (44 men and 13 women, mean age = 31 ± 7.1 years) who underwent ACL reconstruction either isolated (Group I: 25 patients) or combined with ALL reconstruction (Group II: 32 patients). The evaluation of the patients was done preoperatively and postoperatively at 6 weeks, 12 weeks, 6 months, and 12 months including a clinical examination (Lachman's test, Pivot shift's test, and Rolimeter differential anterior laxity), an objective clinical scores (objective: the International Knee Documentation Committee [IKDC] score) and a subjective clinical scores (subjective: IKDC's score, Lysholm's score, and Tegner's activity score). Postoperative complications of all the patients were recorded. There was a significant difference between the study groups at all follow-up intervals when evaluating the postoperative pivot shift test (p < 0.05) with a superior rotational stability in the group of combined ACL and ALL reconstruction. At the final follow-up evaluation, 36% of the patients from Group I and 6.2% in Group II had a grade I positive pivot shift test (p < 0.05). There was a statistically significant difference between the two groups regarding the number of patients with a grade A IKDC objective score (p < 0.05) at the 6- and 12-month follow-up intervals (p = 0.007). There was a significant difference concerning the IKDC subjective score between the two study groups in favor of the combined ACL and ALL reconstruction group at 12 months postoperatively (p = 0.048). Combined ACL and ALL reconstruction technique was demonstrated to be effective in obtaining a superior control of the rotational knee instability and to improve the clinical objective and subjective outcomes when compared with isolated ACL reconstruction in sports patients with high-grade pivoting shifts.
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Affiliation(s)
- Ştefan Mogoş
- Foişor Orthopaedics Hospital, Bucharest, Romania
| | | | - Dinu Antonescu
- University of Medicine and Pharmacy, Carol Davila Bucharest, Romania
| | - Ioan-Cristian Stoica
- Foişor Orthopaedics Hospital, Bucharest, Romania.,University of Medicine and Pharmacy, Carol Davila Bucharest, Romania
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Xu J, Qiao Y, Han K, Xu C, Dong S, Zhao J. Modified Lemaire Lateral Extra-articular Tenodesis With the Iliotibial Band Strip Fixed on the Femoral Cortical Surface Reduces Laxity and Causes Less Overconstraint in the Anterolateral Lesioned Knee: A Biomechanical Study. Arthroscopy 2022; 38:3162-3171. [PMID: 35777678 DOI: 10.1016/j.arthro.2022.06.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 02/02/2023]
Abstract
PURPOSE To compare the biomechanical effects of femoral cortical surface fixation and intra-tunnel fixation in modified Lemaire tenodesis on the restoration of native kinematics in anterolateral structure-deficient knees. METHODS Eight fresh-frozen cadaveric knees were mounted in a knee-customized jig to evaluate anterior translation in anterior load and internal rotation degree in internal rotation torque at 0°, 30°, 60°, and 90°, as well as anterolateral translation (ALT) in a simulated pivot-shift test at 0°, 15°, 30°, and 45°. Kinematic tests were performed in the following states: intact; anterolateral knee lesion (AL-Les); modified Lemaire lateral extra-articular tenodesis (LET) with the femoral iliotibial band (ITB) strip fixed on the cortical surface (cortical fixation), deep to the lateral collateral ligament (LCL) (deep LET-C); and LET with the femoral ITB strip fixed into a tunnel (intra-tunnel fixation), deep to the LCL (deep LET-IT) or superficial to the LCL (superficial LET-IT). The knee kinematic changes in the AL-Les state and the 3 LET states were compared with each other, with the intact state as the baseline. RESULTS In the AL-Les state, the increased anterior translation instabilities were significantly mitigated by the 3 LETs at 30°, 60°, and 90° (all P < .001), with overconstraint observed in both the deep LET-IT and superficial LET-IT states at 60° (P = .047 and P < .001, respectively) and 90° (both P < .001). Similarly, the 3 LETs significantly reduced the internal rotation instabilities in the AL-Les state at all flexion angles. The superficial LET-IT state overconstrained the knee at 60° (P = .009) and 90° (P < .001) during internal rotation torque, and the deep LET-IT state did so at 60° (P = .012). Furthermore, the ALT instabilities found in the AL-Les state were significantly reduced by the 3 LETs during the simulated pivot-shift test. At 30° and 45°, these LET states resulted in overconstraint when compared with the intact state, but the superficial LET-IT state (P < .001) or deep LET-IT state (P = .016) presented a larger overconstraint than that in the deep LET-C at 45°, respectively. CONCLUSIONS The 3 Lemaire LET procedures evaluated reduced the anterior, internal rotational, and ALT laxities in AL-Les knees and restored these parameters to the native baseline of the intact state at most flexion angles. However, in deep flexion, some overconstraint occurred in all LETs when compared with the intact state, of which the deep LET-C state resulted in less overconstraint in anterior translation and internal rotation than the deep LET-IT and superficial LET-IT states. CLINICAL RELEVANCE This biomechanical study supports using the femoral cortical fixation technique to fix the ITB strip in the modified Lemaire LET, which similarly improves knee kinematic stability and causes less overconstraint compared with conventional intra-tunnel fixation. These findings need more verification in clinical scenarios.
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Affiliation(s)
- Junjie Xu
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yi Qiao
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Kang Han
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Caiqi Xu
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Shikui Dong
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
| | - Jinzhong Zhao
- Department of Sports Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
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Saeidi M, Barnes SC, Berthaume MA, Holthof SR, Milandri GS, Bull AMJ, Jeffers J. Low-cost locally manufacturable unilateral imperial external fixator for low- and middle-income countries. FRONTIERS IN MEDICAL TECHNOLOGY 2022; 4:1004976. [PMID: 36530549 PMCID: PMC9753939 DOI: 10.3389/fmedt.2022.1004976] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/07/2022] [Indexed: 03/19/2024] Open
Abstract
Treating open fractures in long bones can be challenging and if not performed properly can lead to poor outcomes such as mal/non-union, deformity, and amputation. One of the most common methods of treating these fracture types is temporary external fixation followed by definitive fixation. The shortage of high-quality affordable external fixators is a long-recognised need, particularly in Low- and Middle-Income Countries (LMICs). This research aimed to develop a low-cost device that can be manufactured locally to international standards. This can provide surge capacity for conflict zones or in response to unpredictable incidents and situations. The fixator presented here and developed by us, the Imperial external fixator, was tested on femur and tibia specimens under 100 cycles of 100 N compression-tension and the results were compared with those of the Stryker Hoffmann 3 frame. The Imperial device was stiffer than the Stryker Hoffmann 3 with a lower median interfragmentary motion (of 0.94 vs. 1.48 mm). The low-cost, easy to use, relatively lightweight, and easy to manufacture (since minimum skillset and basic workshop equipment and materials are needed) device can address a critical shortage and need in LMICs particularly in conflict-affected regions with unpredictable demand and supply. The device is currently being piloted in three countries for road traffic accidents, gunshot wounds and other conflict trauma-including blast cohorts.
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Affiliation(s)
- Mehdi Saeidi
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Spencer C. Barnes
- Department of Mechanical Engineering, Imperial College London, London, United Kingdom
| | | | - Sander R. Holthof
- Department of Mechanical Engineering, Imperial College London, London, United Kingdom
| | | | - Anthony M. J. Bull
- Department of Bioengineering, Imperial College London, London, United Kingdom
| | - Jonathan Jeffers
- Department of Mechanical Engineering, Imperial College London, London, United Kingdom
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Mogos Ș, Antonescu D, Stoica IC, D'Ambrosi R. Superior rotational stability and lower re-ruptures rate after combined anterolateral and anterior cruciate ligament reconstruction compared to isolated anterior cruciate ligament reconstruction: a 2-year prospective randomized clinical trial. PHYSICIAN SPORTSMED 2022:1-8. [PMID: 35968574 DOI: 10.1080/00913847.2022.2112914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
PURPOSE The purpose of the current prospective randomized clinical trial (RCT) was to compare the clinical outcomes of combined anterior cruciate ligament (ACL) and anterolateral ligament (ALL) reconstruction with those of isolated ACL reconstruction and evaluate the re-rupture rate between the two study groups. METHODS This prospective RCT included 58 patients (43 men and 15 women) who underwent ACL reconstruction, either isolated (Group I: 26 patients) or combined with the ALL reconstruction (Group II: 32 patients). Preoperatively, the two groups differed in age and rate of medial meniscal injuries. The patients were evaluated preoperatively and postoperatively during the time points corresponding to 6 (T1) weeks, 12 (T2) weeks, 6 (T3) months, 12 (T4) months, and 24 (T5) months. The evaluation included the clinical examination (comprising Lachman test, Pivot Shift test, Range of Motion, and Rolimeter differential anterior laxity), the objective clinical score (Objective IKDC [The International Knee Documentation Committee] score), and the subjective clinical scores (comprising Subjective IKDC score, Lysholm score, and Tegner activity score). The postoperative complications of all the patients were recorded. RESULTS Both the groups reported a significant improvement in clinical scores during the final follow-up as compared to the preoperative value (p < 0.05). The only differences between the two groups were observed with respect to the pivot shift test during each follow-up, wherein more patients from group I reported a pivot shift test grade I as compared to group II (p < 0.05). Three patients from group I reported a re-rupture of the operated knee, whereas no patients from group II reported new ruptures (p = 0.041). CONCLUSIONS Combined ACL and ALL reconstruction has proven to be more effective in obtaining a high grade of rotational knee stability during mid-term follow-up as compared to isolated ACL reconstruction along with a significantly lower rate of re-ruptures. LEVEL OF EVIDENCE Level I: Randomized Clinical Trial. REGISTRATION researchregistry5873: www.researchregistry.com.
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Affiliation(s)
| | - Dinu Antonescu
- University of Medicine and Pharmacy Carol Davila Bucharest, Bucuresti, Romania
| | - Ioan-Cristian Stoica
- Foișor Orthopaedics Hospital Bucharest, Romania.,University of Medicine and Pharmacy Carol Davila Bucharest, Bucuresti, Romania
| | - Riccardo D'Ambrosi
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.,Dipartimento di Scienze Biomediche per la Salute, Universit' degli Studi di Milano, Milan, Italy
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Anatomy, Biomechanics, and Reconstruction of the Anterolateral Ligament of the Knee Joint. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58060786. [PMID: 35744048 PMCID: PMC9228568 DOI: 10.3390/medicina58060786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 11/17/2022]
Abstract
Despite remarkable advances in the clinical outcomes after anterior cruciate ligament reconstructions (ACLRs), residual rotational instability of the knee joint remains a major concern. Since the anterolateral ligament (ALL) on the knee joint has been “rediscovered”, the role of anterolateral structures, including ALL and deep iliotibial band, as secondary stabilizers of anterolateral rotatory instability has gained interest. This interest has led to the resurgence of anterolateral procedures combined with ACLRs to restore rotational stability in patients with anterior cruciate ligament (ACL) deficiencies. However, the difference in concepts between anterolateral ligament reconstructions (ALLRs) as anatomical reconstruction and lateral extra-articular tenodesis (LETs) as non-anatomical reinforcement has been conflicting in present literature. This study aimed to review the anatomy and biomechanics of anterolateral structures, surgical techniques, and the clinical outcomes of anterolateral procedures, including LET and ALLR, in patients with ACL deficiencies.
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13
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Legnani C, Borgo E, Macchi V, Ventura A. Restoring rotational stability following anterior cruciate ligament surgery: single-bundle reconstruction combined with lateral extra-articular tenodesis versus double-bundle reconstruction. J Comp Eff Res 2022; 11:729-736. [PMID: 35642491 DOI: 10.2217/cer-2021-0248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To compare the outcomes of patients who underwent single-bundle (SB) anterior cruciate ligament (ACL) reconstruction combined with lateral extra-articular tenodesis (LET) with the outcomes of those who underwent double-bundle (DB) ACL reconstruction. Methods: 16 patients who underwent ACL hamstring SB reconstruction combined with LET (Coker-Arnold modification of the MacIntosh procedure) were retrospectively compared with 20 patients who underwent hamstring DB reconstruction at an average follow-up of 6.2 years. Assessment included Lysholm and International Knee Documentation Committee scores, objective examination and instrumented laxity test. Results: No complications were reported. Mean Lysholm and International Knee Documentation Committee scores significantly increased from preoperatively (p < 0.05). No differences were reported between the two groups with regard to point scales, anterior tibial translation and pivot-shift test (p = not significant). Conclusions: Both DB ACL reconstruction and combined LET and autologous hamstring SB ACL reconstruction are effective at providing satisfying functional outcomes and restoring rotational stability.
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Affiliation(s)
- Claudio Legnani
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology & Minimally Invasive Articular Surgery Center, Milan, Italy
| | - Enrico Borgo
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology & Minimally Invasive Articular Surgery Center, Milan, Italy
| | - Vittorio Macchi
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology & Minimally Invasive Articular Surgery Center, Milan, Italy
| | - Alberto Ventura
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology & Minimally Invasive Articular Surgery Center, Milan, Italy
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14
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Miyaji N, Holthof SR, Bastos RP, Ball SV, Espregueira-Mendes J, Williams A, Amis AA. A Triple-Strand Anatomic Medial Collateral Ligament Reconstruction Restores Knee Stability More Completely Than a Double-Strand Reconstruction: A Biomechanical Study In Vitro. Am J Sports Med 2022; 50:1832-1842. [PMID: 35503457 PMCID: PMC9160957 DOI: 10.1177/03635465221090612] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND There are many descriptions of medial collateral ligament (MCL) reconstruction, but they may not reproduce the anatomic structures and there is little evidence of their biomechanical performance. PURPOSE To investigate the ability of "anatomic" MCL reconstruction to restore native stability after grade III MCL plus posteromedial capsule/posterior oblique ligament injuries in vitro. STUDY DESIGN Controlled laboratory study. METHODS Twelve cadaveric knees were mounted in a kinematic testing rig to impose tibial displacing loads while the knee was flexed-extended: 88-N anteroposterior translation, 5-N·m internal-external rotation, 8-N·m valgus-varus, and combined anterior translation plus external rotation (anteromedial rotatory instability). Joint motion was measured via optical trackers with the knee intact; after superficial MCL (sMCL), deep MCL (dMCL), and posterior oblique ligament transection; and then after MCL double- and triple-strand reconstructions. Double strands reproduced the sMCL and posterior oblique ligament and triple-strands the sMCL, dMCL, and posterior oblique ligament. The sMCL was placed 5 mm posterior to the epicondyle in the double-strand technique and at the epicondyle in the triple-strand technique. Kinematic changes were examined by repeated measures 2-way analysis of variance with posttesting. RESULTS Transection of the sMCL, dMCL, and posterior oblique ligament increased valgus rotation (5° mean) and external rotation (9° mean). The double-strand reconstruction controlled valgus in extension but allowed 5° excess valgus in flexion and did not restore external rotation (7° excess). The triple-strand reconstruction restored both external rotation and valgus throughout flexion. CONCLUSION In a cadaveric model, a triple-strand reconstruction including a dMCL graft restored native external rotation, while a double-strand reconstruction without a dMCL graft did not. A reconstruction with the sMCL graft placed isometrically on the medial epicondyle restored valgus rotation across the arc of knee flexion, whereas a reconstruction with a more posteriorly placed sMCL graft slackened with knee flexion. CLINICAL RELEVANCE An MCL injury may rupture the anteromedial capsule and dMCL, causing anteromedial rotatory instability. Persistent MCL instability increases the likelihood of ACL graft failure after combined injury. A reconstruction with an anteromedial dMCL graft restored native external rotation, which may help to unload/protect an ACL graft. It is important to locate the sMCL graft isometrically at the femoral epicondyle to restore valgus across flexion.
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Affiliation(s)
- Nobuaki Miyaji
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Department of Orthopaedic Surgery, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Sander R. Holthof
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK
| | - Ricardo P.S. Bastos
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Clínica do Dragão–Espregueira-Mendes Sports Centre, Porto, Portugal
| | | | | | - Andy Williams
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Fortius Clinic, London, UK
| | - Andrew A. Amis
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Andrew A. Amis, FREng, DSc(Eng), Biomechanics Group, Mechanical Engineering Department, Imperial College London, London SW7 2AZ, UK ()
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15
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Mayr R, Sigloch M, Coppola C, Hoermann R, Iltchev A, Schmoelz W. Modified Lemaire tenodesis reduces anterior cruciate ligament graft forces during internal tibial torque loading. J Exp Orthop 2022; 9:45. [PMID: 35583714 PMCID: PMC9117580 DOI: 10.1186/s40634-022-00484-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/06/2022] [Indexed: 11/10/2022] Open
Abstract
PURPOSE The aim of the study was to directly measure graft forces of an anterior cruciate ligament reconstruction (ACLR) and a lateral extra-articular tenodesis (LET) using the modified Lemaire technique in combined anterior cruciate ligament (ACL) deficient and anterolateral rotatory instable knees and to analyse the changes in knee joint motion resulting from combined ACLR + LET. METHODS On a knee joint test bench, six fresh-frozen cadaveric specimens were tested at 0°, 30°, 60°, and 90° of knee flexion in the following states: 1) intact; 2) with resected ACL; 3) with resected ACL combined with anterolateral rotatory instability; 4) with an isolated ACLR; and 5) with combined ACLR + LET. The specimens were examined under various external loads: 1) unloaded; 2) with an anterior tibial translation force (ATF) of 98 N; 3) with an internal tibial torque (IT) of 5 Nm; and 4) with a combined internal tibial torque of 5 Nm and an anterior tibial translation force of 98 N (IT + ATF). The graft forces of the ACLR and LET were recorded by load cells incorporated into custom devices, which were screwed into the femoral tunnels. Motion of the knee joint was analysed using a 3D camera system. RESULTS During IT and IT + ATF, the addition of a LET reduced the ACLR graft forces up to 61% between 0° and 60° of flexion (P = 0.028). During IT + ATF, the LET graft forces reached 112 N. ACLR alone did not restore native internal tibial rotation after combined ACL deficiency and anterolateral rotatory instability. Combined ACLR + LET was able to restore native internal tibial rotation values for 0°, 60° and 90° of knee flexion with decreased internal tibial rotation at 30° of flexion. CONCLUSION The study demonstrates that the addition of a LET decreases the forces seen by the ACLR graft and reduces residual rotational laxity after isolated ACLR during internal tibial torque loading. Due to load sharing, a LET could support the ACLR graft and perhaps be the reason for reduced repeat rupture rates seen in clinical studies. Care must be taken not to limit the internal tibial rotation when performing a LET.
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Affiliation(s)
- Raul Mayr
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Maximilian Sigloch
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Christian Coppola
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Romed Hoermann
- Institute for Clinical and Functional Anatomy, Medical University of Innsbruck, Innsbruck, Austria
| | - Alessandra Iltchev
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Werner Schmoelz
- Department for Orthopaedics and Traumatology, Medical University of Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria.
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16
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Di Paolo S, Grassi A, Pizza N, Lucidi GA, Dal Fabbro G, Macchiarola L, Zaffagnini S. Anterior cruciate ligament reconstruction with lateral plasty restores anterior-posterior laxity in the case of concurrent partial medial meniscectomy. Knee Surg Sports Traumatol Arthrosc 2022; 30:1646-1653. [PMID: 34379166 DOI: 10.1007/s00167-021-06689-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE To evaluate the in vivo knee laxity in the presence of a partial medial meniscectomy before and after a single-bundle ACL reconstruction with a lateral plasty (SBLP) and to compare it with the knee laxity after a single-bundle ACL reconstruction (SB). METHODS One-hundred and one patients with ACL tear were enrolled in the study and grouped according to the surgical technique and the meniscus treatment: regarding the SBLP technique (n = 55), 31 patients underwent isolated ACL reconstruction ("SBLP Isolated ACL Group"), while 24 patients underwent combined ACL reconstruction and partial medial meniscectomy ("SBLP ACL + MM Group"); regarding the SB technique (n = 46), 33 patients underwent isolated ACL reconstruction ("SB Isolated ACL Group"), while 13 patients underwent combined ACL reconstruction and partial medial meniscectomy ("SB ACL + MM Group"). Anterior-posterior clinical laxity at 30° (AP30) and 90° (AP90) of knee flexion was quantified before and after surgery through a surgical navigation system dedicated to kinematic assessment. RESULTS In the ACL-deficient status, the antero-posterior laxity was significantly higher in the presence of a combined MM in both the AP30 and the AP90, with no differences between the two surgical techniques. After the ACL reconstruction, both AP30 and AP90 translations decreased significantly (p < 0.0001) compared to the ACL-deficient status. No differences were found for AP30 and AP90 between SBLP Isolated ACL and SBLP + MM groups, while a significantly higher AP90 translation was found for the SB + MM group compared to the SB Isolated ACL group. Moreover, the AP90 translation in the SB ACL + MM group was significantly higher than the one of the other three groups, i.e., SBLP ACL + MM, SB, and SBLP Isolated ACL group. CONCLUSION The ACL reconstruction with lateral plasty reduced the AP knee laxity caused by the medial meniscectomy in the context of an ACL surgery. LEVEL OF EVIDENCE Level II.
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Affiliation(s)
- Stefano Di Paolo
- Dipartimento di Scienze per la Qualità della Vita QUVI, Università di Bologna, Bologna, Italy
| | - Alberto Grassi
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, via Pupilli 1, 40136, Bologna, Italy
| | - Nicola Pizza
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, via Pupilli 1, 40136, Bologna, Italy.
| | - Gian Andrea Lucidi
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, via Pupilli 1, 40136, Bologna, Italy
| | - Giacomo Dal Fabbro
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, via Pupilli 1, 40136, Bologna, Italy
| | - Luca Macchiarola
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, via Pupilli 1, 40136, Bologna, Italy
| | - Stefano Zaffagnini
- Clinica Ortopedica e Traumatologica II, IRCCS Istituto Ortopedico Rizzoli, via Pupilli 1, 40136, Bologna, Italy.,Dipartimento di Scienze Biomediche e Neuromotorie DIBINEM, Università di Bologna, Bologna, Italy
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Beckers L, Vivacqua T, Firth AD, Getgood AMJ. Clinical outcomes of contemporary lateral augmentation techniques in primary ACL reconstruction: a systematic review and meta-analysis. J Exp Orthop 2021; 8:59. [PMID: 34383156 PMCID: PMC8360253 DOI: 10.1186/s40634-021-00368-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/24/2021] [Indexed: 12/19/2022] Open
Abstract
PURPOSE The purpose of this investigation was to systematically review the contemporary literature to determine if a lateral augmentation (LA) added to an Anterior Cruciate Ligament Reconstruction (ACLR) provides better clinical and patient reported outcomes compared to an isolated ACLR. METHODS A systematic review and meta-analysis was performed according to the Preferred Reporting Items for Systematic reviews and Meta-analyses (PRISMA) criteria. Two authors independently conducted an electronic search using MEDLINE® and Embase® on February 6th, 2021 for level I-III randomized controlled trials (RCT) and prospective cohort studies without randomization, published after 2012 and with a minimum of two year follow-up. Publications were included when they reported on the objective knee stability examination, patient reported outcome scores, return to sports or graft rupture rate of any type of primary, isolated ACLR compared to ACLR combined with any type of LA. RESULTS A total of 11 studies that reported on a combined total of 1892 unique patients were eligible for data extraction, including five RCTs and six prospective cohort studies. In 6 studies, an Anterolateral Ligament reconstruction (ALLR) was the LA of choice, while the 5 other publications used different types of Lateral Extra-articular Tenodesis (LET). A significant reduction in graft ruptures was found in patients treated with ACLR + LA (3%) compared to isolated ACLR (12%). Rotational laxity was significantly higher in isolated ACLR (14%) compared to ACLR + LA (6%). Addition of a LA reduced anterior translation when assessed via instrumented laxity testing. No significant difference was found in the patient reported outcome scores (IKDC and Tegner) between both patient groups, except for the Lysholm Score which was significant in favour of the ACLR + LA group. CONCLUSION Combination of a primary ACLR with a LA can significantly reduce the risk of graft rupture and provide better rotatory stability, without jeopardizing patient reported outcomes. LEVEL OF EVIDENCE Level III, Systematic Review of Level I, II and III studies.
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Affiliation(s)
- Lucas Beckers
- Department of Orthopedic Surgery, Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, 1151 Richmond Street, London, ON, N6A 3K7, Canada
| | - Thiago Vivacqua
- Department of Orthopedic Surgery, Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, 1151 Richmond Street, London, ON, N6A 3K7, Canada
| | - Andrew D Firth
- Health and Rehabilitation Sciences, Faculty of Health Sciences, University of Western Ontario, 3M Centre, 1151 Richmond Street, London, ON, N6A 3K7, Canada
| | - Alan M J Getgood
- Department of Orthopedic Surgery, Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, 3M Centre, 1151 Richmond Street, London, ON, N6A 3K7, Canada.
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Wang D, Willinger L, Athwal KK, Williams A, Amis AA. Knee Joint Line Obliquity Causes Tibiofemoral Subluxation That Alters Contact Areas and Meniscal Loading. Am J Sports Med 2021; 49:2351-2360. [PMID: 34125619 PMCID: PMC8283183 DOI: 10.1177/03635465211020478] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Little scientific evidence is available regarding the effect of knee joint line obliquity (JLO) before and after coronal realignment osteotomy. HYPOTHESES Higher JLO would lead to abnormal relative position of the femur on the tibia, a shift of the joint contact areas, and elevated joint contact pressures. STUDY DESIGN Descriptive laboratory study. METHODS 10 fresh-frozen human cadaveric knees (age, 59 ± 5 years) were axially loaded to 1500 N in a materials testing machine with the joint line tilted 0°, 4°, 8°, and 12° varus ("downhill" medially) and valgus, at 0° and 20° of knee flexion. The mechanical compression axis was aligned to the center of the tibial plateau. Contact pressure and contact area were recorded by pressure sensors inserted between the tibia and femur below the menisci. Changes in relative femoral and tibial position in the coronal plane were obtained by an optical tracking system. RESULTS Both medial and lateral JLO caused significant tibiofemoral subluxation and pressure distribution changes. Medial (varus) JLO caused the femur to subluxate medially down the coronal slope of the tibial plateau, and vice versa for lateral (valgus) downslopes (P < .01), giving a 6-mm range of subluxation. The areas of peak pressure moved 12 mm and 8 mm across the medial and lateral condyles, onto the downhill meniscus and the "uphill" tibial spine. Changes in JLO had only small effects on maximum contact pressures. CONCLUSION A 4° change of JLO during load bearing caused significant mediolateral tibiofemoral subluxation. The femur slid down the slope of the tibial plateau to abut the tibial eminence and also to rest on the downhill meniscus. This caused large movements of the tibiofemoral contact pressures across each compartment. CLINICAL RELEVANCE These results provide important information for understanding the consequences of creating coronal JLO and for clinical practice in terms of osteotomy planning regarding the effect on JLO. This information provides guidance regarding the choice of single- or double-level osteotomy. Excessive JLO alteration may cause abnormal tibiofemoral joint articulation and chondral or meniscal loading.
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Affiliation(s)
- Dong Wang
- The Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, UK,College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
| | - Lukas Willinger
- The Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, UK
| | - Kiron K. Athwal
- The Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, UK
| | | | - Andrew A. Amis
- The Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, UK,Address correspondence to Andrew A. Amis, FREng, DSc(Eng), The Biomechanics Group, Department of Mechanical Engineering, Imperial College London, London, SW7 2AZ, UK ()
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19
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Willinger L, Athwal KK, Williams A, Amis AA. An Anterior Cruciate Ligament In Vitro Rupture Model Based on Clinical Imaging. Am J Sports Med 2021; 49:2387-2395. [PMID: 34115540 PMCID: PMC8283191 DOI: 10.1177/03635465211017145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Biomechanical studies on anterior cruciate ligament (ACL) injuries and reconstructions are based on ACL transection instead of realistic injury trauma. PURPOSE To replicate an ACL injury in vitro and compare the laxity that occurs with that after an isolated ACL transection injury before and after ACL reconstruction. STUDY DESIGN Controlled laboratory study. METHODS Nine paired knees were ACL injured or ACL transected. For ACL injury, knees were mounted in a rig that imposed tibial anterior translation at 1000 mm/min to rupture the ACL at 22.5° of flexion, 5° of internal rotation, and 710 N of joint compressive force, replicating data published on clinical bone bruise locations. In contralateral knees, the ACL was transected arthroscopically at midsubstance. Both groups had ACL reconstruction with bone-patellar tendon-bone graft. Native, ACL-deficient, and reconstructed knee laxities were measured in a kinematics rig from 0° to 100° of flexion with optical tracking: anterior tibial translation (ATT), internal rotation (IR), anterolateral (ATT + IR), and pivot shift (IR + valgus). RESULTS The ACL ruptured at 26 ± 5 mm of ATT and 1550 ± 620 N of force (mean ± SD) with an audible spring-back tibiofemoral impact with 5o of valgus. ACL injury and transection increased ATT (P < .001). ACL injury caused greater ATT than ACL transection by 1.4 mm (range, 0.4-2.2 mm; P = .033). IR increased significantly in ACL-injured knees between 0° and 30° of flexion and in ACL transection knees from 0° to 20° of flexion. ATT during the ATT + IR maneuver was increased by ACL injury between 0° and 80° and after ACL transection between 0° and 60°. Residual laxity persisted after ACL reconstruction from 0° to 40° after ACL injury and from 0° to 20° in the ACL transection knees. ACL deficiency increased ATT and IR in the pivot-shift test (P < .001). The ATT in the pivot-shift increased significantly at 0° to 20° after ACL transection and 0° to 50° after ACL injury, and this persisted across 0° to 20° and 0° to 40° after ACL reconstruction. CONCLUSION This study developed an ACL injury model in vitro that replicated clinical ACL injury as evidenced by bone bruise patterns. ACL injury caused larger increases of laxity than ACL transection, likely because of damage to adjacent tissues; these differences often persisted after ACL reconstruction. CLINICAL RELEVANCE This in vitro model created more realistic ACL injuries than surgical transection, facilitating future evaluation of ACL reconstruction techniques.
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Affiliation(s)
- Lukas Willinger
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Orthopaedic Surgery Department, Technical University of Munich, Munich, Germany
| | - Kiron K. Athwal
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK
| | - Andy Williams
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Fortius Clinic, London, UK
| | - Andrew A. Amis
- Biomechanics Group, Mechanical Engineering Department, Imperial College London, London, UK,Andrew A. Amis, FREng, DSc(Eng), Mechanical Engineering Department, Imperial College London, London, SW7 2AZ, UK ()
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20
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Littlefield CP, Belk JW, Houck DA, Kraeutler MJ, LaPrade RF, Chahla J, McCarty EC. The Anterolateral Ligament of the Knee: An Updated Systematic Review of Anatomy, Biomechanics, and Clinical Outcomes. Arthroscopy 2021; 37:1654-1666. [PMID: 33340678 DOI: 10.1016/j.arthro.2020.12.190] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 11/29/2020] [Accepted: 12/03/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE To perform an updated systematic review of the anatomy, biomechanics, function of the anterolateral ligament (ALL), and the clinical outcomes of anterolateral ligament reconstruction (ALLR) when performed in conjunction with anterior cruciate ligament reconstruction (ACLR). METHODS A systematic search of the literature was performed by searching PubMed, the Cochrane Library, and Embase with the search phrase anterolateral ligament for articles published from February 2017 to May 2020. Inclusion criteria included studies that evaluated the anatomy, function, or biomechanics of the ALL; surgical technique articles on ALLR; clinical articles reporting outcomes of ALLR; studies published in English; and full-text articles. Exclusion criteria included studies published before February 2017. A subjective synthesis was performed, in which ranges were reported, and individual study data were presented in forest plots. RESULTS Overall, 40 articles were included in this systematic review, with 11 articles describing ALL anatomy, 14 articles analyzing ALL function and biomechanics, 7 articles discussing the surgical technique of combined ACLR and ALLR (ACLR/ALLR), and 8 articles describing the clinical outcomes of ACLR/ALLR. The addition of ALLR in combination with ACLR (ACLR+) results in lower graft failure rates for ACLR/ALLR (0.0%-15.7%) when compared with isolated ACLR (I-ACLR) patients (7.4%-21.7%). Three of 5 studies using the Subjective International Knee Documentation Committee score, 2 of 5 studies using the Lysholm score, and 1 of 2 studies using the Tegner score reported significantly better scores at latest follow-up among ACLR+ patients compared with I-ACLR (P < .05). CONCLUSIONS The ALL acts as a secondary stabilizer to the anterior cruciate ligament and helps resist internal knee rotation and anterior tibial translation. Based on the current literature, combined ACLR with ALLR may result in lower graft failure rates and improved patient-reported outcomes when compared with I-ACLR in patients with specific indications, although several studies have shown equivalent outcomes between these 2 cohorts. CLINICAL RELEVANCE The contents of this review provide great insight for orthopaedic surgeons who are performing ACLR and considering additional procedures to increase overall knee stability and decrease likeliness for re-rupture. The postoperative functional and clinical outcomes shown in patients undergoing ACLR+ compared with I-ACLR should be given proper consideration when evaluating available treatment courses.
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Affiliation(s)
- Connor P Littlefield
- University of Colorado School of Medicine, Department of Orthopaedics, University of Colorado, Aurora, Colorado, U.S.A
| | - John W Belk
- University of Colorado School of Medicine, Department of Orthopaedics, University of Colorado, Aurora, Colorado, U.S.A..
| | - Darby A Houck
- University of Colorado School of Medicine, Department of Orthopaedics, University of Colorado, Aurora, Colorado, U.S.A
| | - Matthew J Kraeutler
- St. Joseph's University Medical Center, Department of Orthopaedic Surgery, Paterson, New Jersey, U.S.A
| | | | - Jorge Chahla
- Division of Sports Medicine, Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Eric C McCarty
- University of Colorado School of Medicine, Department of Orthopaedics, University of Colorado, Aurora, Colorado, U.S.A
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21
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Espregueira-Mendes J. Is the anterolateral ligament the smoking gun to explain rotational knee laxity or just vaporware? J ISAKOS 2021; 6:63-65. [PMID: 33832978 DOI: 10.1136/jisakos-2020-000529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- João Espregueira-Mendes
- Clínica do Dragão, Espregueira-Mendes Sports Centre - FIFA Medical Centre of Excellence, Porto, Portugal .,Dom Henrique Research Centre, Porto, Portugal.,School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.,3B's Research Group-Biomaterials, Biodegradablesand Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães, Portugal
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22
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Ventura A, Legnani C, Boisio F, Borgo E, Peretti GM. The association of extra-articular tenodesis restores rotational stability more effectively compared to contralateral hamstring tendon autografts ACL reconstruction alone in patients undergoing ACL revision surgery. Orthop Traumatol Surg Res 2021; 107:102739. [PMID: 33390331 DOI: 10.1016/j.otsr.2020.06.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/27/2020] [Accepted: 06/22/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND Recent years have seen a resurgence of interest about lateral extra-articular procedures performed in association with anterior cruciate ligament (ACL) surgery, as they can reduce the positivity to pivot shift test by acting on rotational instability. The purpose of the present study is to compare the postoperative functional outcomes of ACL revision surgery using contralateral hamstring tendon autografts with or without extra-articular tenodesis. HYPOTHESIS The hypothesis is that combined extra-articular tenodesis gives better rotational stability following revision ACL surgery. PATIENTS AND METHODS Twenty-four patients who underwent ACL revision surgery were retrospectively reviewed at an average follow-up of 4.5 years; 12 underwent contralateral hamstring tendon autografts reconstruction (group A) while in 12 extra-articular tenodesis was associated (group B). Assessment included Lysholm score, International Knee Documentation Committee (IKDC) Subjective Knee Form, Tegner activity level and objective evaluation (range of motion, Lachman test, pivot-shift test and KT-1000 instrumented laxity testing). RESULTS Follow-up examination showed that there were no statistically significant differences in Lysholm, IKDC and Tegner scores between the groups (p=n.s.). Similarly, no differences concerning anterior tibial translation as measured with KT-1000 arthrometer were reported between the groups (p=n.s.); the percentage of positivity to pivot shift test was significantly higher in patients in group A (p<0.05). CONCLUSIONS The association of extra-articular tenodesis restores rotational stability more effectively compared to contralateral hamstring tendon autografts ACL revision surgery alone. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Alberto Ventura
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology and Minimally Invasive Articular Surgery Center, Milan, Italy
| | - Claudio Legnani
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology and Minimally Invasive Articular Surgery Center, Milan, Italy.
| | | | - Enrico Borgo
- IRCCS Istituto Ortopedico Galeazzi, Sports Traumatology and Minimally Invasive Articular Surgery Center, Milan, Italy
| | - Giuseppe M Peretti
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy; Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
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