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Lee DW, Kang SJ, Kim RJ, Cho SI, Moon SG, Yang SJ, Kim JG. Clinical and Radiological Outcomes of Medial Meniscal Allograft Transplantation Combined With Realignment Surgery. Am J Sports Med 2024:3635465241255346. [PMID: 38910353 DOI: 10.1177/03635465241255346] [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: 06/25/2024]
Abstract
BACKGROUND The outcomes of medial meniscal allograft transplantation (MMAT) combined with high tibial osteotomy (HTO) compared with isolated MMAT remain unclear. PURPOSE To compare the clinical and radiological results of MMAT combined with HTO and isolated MMAT. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS This retrospective study included 42 consecutive patients, who were divided into group M (isolated MMAT; n = 22) and group H (MMAT combined with HTO with a varus angle >3°; n = 20). Group differences in subjective knee scores, isokinetic muscle strength test, and radiological outcomes (Kellgren-Lawrence grade, mechanical axis, graft extrusion, graft status, and articular cartilage loss) were compared. RESULTS The mean follow-up period was 29.2 ± 4.9 months and 27.4 ± 5.3 months for groups M and H, respectively. The Lysholm score improved from 55.4 ± 9.5 to 81.3 ± 9.7 and from 52.6 ± 8.9 to 84.2 ± 10.2 in groups M and H, respectively (both P < .001). The International Knee Documentation Committee subjective score improved from 51.4 ± 10.3 to 79.6 ± 9.4 and from 49.3 ± 11.4 to 81.4 ± 8.3 in groups M and H, respectively (both P < .001). Both groups showed no significant differences in subjective knee scores and isokinetic extensor strength at the final follow-up. The rate of preoperative and postoperative high International Cartilage Regeneration & Joint Preservation Society grade (≥3) did not differ between the 2 groups. Group M showed greater coronal graft extrusion than did group H (3.3 ± 0.7 mm vs 2.7 ± 0.8 mm; P = .014); the rate of pathologic graft extrusion (≥3 mm) was not higher in group M (40.9%) than in group H (20%) with the number of patients available (P = .143). Both groups showed no significant difference in the graft status. Graft tears were observed in 2 patients (9%) in group M and 1 patient (5%) in group H (P = .607). CONCLUSION Clinical scores significantly improved after isolated MMAT and MMAT combined with HTO compared with preoperative values, and their short-term outcomes were similar. Postoperative graft extrusion was greater in patients who underwent isolated MMAT, implying that active correction of varus alignment during MMAT may help in intra-articular biomechanics.
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Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Sung Jin Kang
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Rak Jun Kim
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Seung Ik Cho
- Sports Medical Center, KonKuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Sung Gyu Moon
- Department of Radiology, KonKuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Sang Jin Yang
- Department of Health and Exercise Management, Tongwon University, Gwangju-si, Gyeonggi-do, Republic of Korea
| | - Jin Goo Kim
- Department of Orthopaedic Surgery, Myongji Hospital, Goyang-si, Gyeonggi-do, Republic of Korea
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Meng XY, Li ZQ, Ding HF, Wang DY, Dai LH, Jiang D. A Novel Ultrasound Method of Evaluating Dynamic Extrusion of Lateral Meniscus in Healthy Population: Different Patterns of Dynamic Extrusion Revealed Between Lateral and Medial Meniscus. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2024. [PMID: 38975721 DOI: 10.1002/jum.16507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 05/21/2024] [Accepted: 05/27/2024] [Indexed: 07/09/2024]
Abstract
OBJECTIVES To establish a reliable ultrasound (US) method of evaluating dynamic extrusion of lateral meniscus in healthy population, and to investigate the pattern of dynamic meniscus extrusion (ME) in lateral meniscus under loading conditions. METHODS The lateral ME was examined via US method in unloaded, double-leg standing, and single-leg standing positions. Two different US measurement methods were compared to the magnetic resonance imaging (MRI) results to determine the optimal measurement methods. The US results obtained by different researchers were tested for interobserver consistency and the results obtained by the same researcher on two separate days were tested for intraobserver consistency. The patterns of dynamic extrusion were compared between medial and lateral sides. RESULTS A total of healthy 44 volunteers were included in the study, with 86 knees assessed by US, and 25 knees evaluated by MRI. The US evaluation of dynamic lateral ME demonstrated excellent interobserver and intraobserver reliability. The US measurements using method A were consistent with the MRI results with no significant difference (P = .861, intraclass correlation coefficient [ICC] = 0.868), while method B underestimated the lateral ME compared to MRI (P = .001, ICC = 0.649). Lateral ME decreased slightly from unloaded (1.0 ± 0.8 mm) to single-leg standing position (0.8 ± 0.8 mm), whereas medial ME increased significantly in both double-leg and single-leg standing positions (2.4 ± 0.7 mm, 2.6 ± 0.7 mm). CONCLUSION A novel US evaluation method of lateral ME was established with reliable and accurate results compared to the MRI. Lateral ME in healthy populations decreased slightly as the loadings increased, which was different from the pattern of dynamic extrusion in medial meniscus.
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Affiliation(s)
- Xiang-Yu Meng
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
- Institute of Sports Medicine, Peking University, Beijing, China
| | - Zhi-Qiang Li
- Department of Ultrasound Medicine, Peking University Third Hospital, Beijing, China
| | - Hong-Fu Ding
- Department of Ultrasound Medicine, People's Hospital of Ningxia Autonomous Region, Yinchuan, China
| | - Ding-Yu Wang
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
- Institute of Sports Medicine, Peking University, Beijing, China
| | - Ling-Hui Dai
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
| | - Dong Jiang
- Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China
- Institute of Sports Medicine, Peking University, Beijing, China
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Familiari F, Chahla J, Compagnoni R, DePhillipo NN, Moatshe G, LaPrade RF. Meniscal extrusion consensus statement: A collaborative survey within the Meniscus International Network (MenIN) Study Group. Knee Surg Sports Traumatol Arthrosc 2024; 32:1446-1454. [PMID: 38606565 DOI: 10.1002/ksa.12183] [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: 02/21/2024] [Revised: 03/21/2024] [Accepted: 04/02/2024] [Indexed: 04/13/2024]
Abstract
PURPOSE The purpose of the present study was to perform a survey administered to members of the Meniscus International Network (MenIN) Study Group, seeking to delineate the most contentious aspects of meniscal extrusion classification and provide a foundation for new, more comprehensive definitions and treatments for these pathologies. METHODS MenIN Study Group is a group of international experts treating and performing research on meniscus pathology and treatment. All MenIN Study Group members were asked to complete a survey aimed at establishing criteria for the optimal classification system for meniscal extrusion. Data obtained from the completed questionnaires were transferred into a spreadsheet and then analysed. All responses are presented as counts, percentages or means. RESULTS Forty-seven (85.5%) MenIN Study Group members completed the survey and were included in this analysis. Key aspects recommended for inclusion in a comprehensive classification system for meniscal extrusion included laterality (93.6%), anatomical location (76.6%), patient age (76.6%), body mass index (BMI) (68.1%) and aetiology (68.1%). For classifying meniscal extrusion, 53.2% considered the distance in millimetres from the tibial plateau's outer margin as the most reliable measurement technique on imaging. Preferences for imaging modalities varied, with 44.7% favouring weight-bearing magnetic resonance imaging (MRI) and 36.2% opting for weight-bearing ultrasound due to its greater availability. Respondents advocated for a classification system addressing stability or progression of meniscal extrusion (66%), reducibility (53.2%), potential progression of knee osteoarthritis (OA) (83%), influencing treatment approaches (83%), a gradation system (83%), consideration of dynamic factors (66%), association with clinical outcomes and prognosis (76.6%) and investigation around centralization procedures (57.4%). CONCLUSIONS In conclusion, the findings of this survey shed light on the global perspectives regarding meniscal extrusion classification. It was generally felt that a new classification of extrusion measured on MRI scans at the mid-tibial plateau should be developed, which considers factors such as laterality, anatomical location, age, BMI and aetiology. Additionally, the results support the integration of dynamic factors and clinical outcomes in MRI-based classifications to inform treatment approaches. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Filippo Familiari
- Department of Orthopaedic and Trauma Surgery, Magna Graecia University, Catanzaro, Italy
- Research Center on Musculoskeletal Health, Magna Graecia University, Catanzaro, Italy
| | - Jorge Chahla
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
- Midwest Orthopaedics at Rush, Chicago, Illinois, USA
| | - Riccardo Compagnoni
- U.O.C. 1° Clinica Ortopedica, ASST G. Pini-CTO, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Nicholas N DePhillipo
- Department of Orthopedics, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Gilbert Moatshe
- Norwegian School of Sports Science, Oslo Sport Trauma Research Center, Oslo, Norway
- Orthopaedic Clinic, Oslo University Hospital Ullevål, Oslo, Norway
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Deng H, Chen Z, Kang J, Liu J, Chen S, Li M, Tao J. The mediating role of synovitis in meniscus pathology and knee osteoarthritis radiographic progression. Sci Rep 2024; 14:12335. [PMID: 38811752 PMCID: PMC11137050 DOI: 10.1038/s41598-024-63291-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 05/27/2024] [Indexed: 05/31/2024] Open
Abstract
Meniscus pathologies (damage, extrusion) and synovitis are associated with knee osteoarthritis (KOA); however, whether synovitis mediates the relationship between meniscus pathologies and KOA radiographic progression remains unclear. We conducted an observational study in the Osteoarthritis Initiative (OAI) cohort, with a 48-month follow-up. Meniscus pathology and synovitis were measured by MRI osteoarthritis knee score (MOAKS) at baseline and 24 months, and a comprehensive synovitis score was calculated using effusion and Hoffa synovitis scores. The knee osteoarthritis radiographic progression was considered that Kellgren-Lawrence (KL) grade and joint space narrowing (JSN) grade at 48 months were increased compared to those at baseline. This study included a total of 589 participants, with KL grades mainly being KL1 (26.5%), KL2 (34.1%), and KL3 (30.2%) at baseline, while JSN grades were mostly 0 at baseline. A logistic regression model was used to analyze the relationship between meniscus pathology, synovitis, and KOA progression. Mediation analysis was used to evaluate the mediation effect of synovitis. The average age of the participants was 61 years old, 62% of which were female. The medial meniscus extrusion was longitudinally correlated with the progression of KL (odds ratio [OR]: 2.271, 95% confidence interval [CI]: 1.412-3.694) and medial JSN (OR: 3.211, 95% CI: 2.040-5.054). Additionally, the longitudinal correlation between medial meniscus damage and progression of KOA (OR: 1.853, 95% CI: 1.177-2.941) and medial JSN (OR: 1.655, 95% CI: 1.053-2.602) was significant. Synovitis was found to mediate the relationship between medial meniscus extrusion and KL and medial JSN progression at baseline (β: 0.029, 95% CI: 0.010-0.053; β: 0.022, 95% CI: 0.005-0.046) and beyond 24 months (β: 0.039, 95% CI: 0.016-0.068; β: 0.047, 95% CI: 0.020-0.078). However, we did not find evidence of synovitis mediating the relationship between meniscal damage and KOA progression. Synovitis mediates the relationship between medial meniscus extrusion (rather than meniscus damage) and KOA progression.
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Affiliation(s)
- Hui Deng
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Zhijun Chen
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jiawei Kang
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jun Liu
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Shenliang Chen
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Mingzhang Li
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jun Tao
- Department of Orthopedics, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
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Boonrod A, Jaruwanneechai K, Saengpetch N, Sumanont S, Prachaney P. Biomechanical impact of meniscal ramp lesions on knee joint contact characteristics in ACL deficient knees: a cadaveric analysis. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024:10.1007/s00590-024-03995-7. [PMID: 38761201 DOI: 10.1007/s00590-024-03995-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 05/08/2024] [Indexed: 05/20/2024]
Abstract
PURPOSE To evaluate the changes in contact characteristics of the tibiofemoral joint resulting from a meniscal ramp lesion in the medial meniscus. METHODS Twelve cadaveric knees (six matched pairs) were subjected to a 600 N axial load using a custom testing jig, which allowed for knee positioning at 0°, 45°, and 90° of flexion without other constraints. The knees were randomly assigned to either a ramp lesion group (n = 6) or a posterior root lesion group (n = 6). Four testing conditions were examined: (1) intact, (2) isolated ramp lesion, (3) isolated posterior root tear of the medial meniscus, and (4) combined ramp lesion and posterior root tear of the medial meniscus. Contact characteristics were evaluated using a flexible pressure sensor, the I-Scan System. RESULTS Peak contact pressure in isolated ramp lesions (4.15 ± 0.98 MPa, P = 0.206) showed non-significant increases compared to the intact condition (3.86 ± 1.32 MPa). Peak contact pressure in isolated posterior root tears (4.58 ± 1.70 MPa, P = 0.040) and, combined ramp and posterior root lesions (4.67 ± 1.47 MPa, P = 0.003) were significantly higher than that in the intact condition. The knee flexion position significantly affected the medial tibiofemoral joint's contact area, contact pressure, and peak contact pressure (P < 0.001 for all). CONCLUSION Isolated ramp lesions did not significantly impact force transmission, contact area, or contact pressure. In contrast, isolated root lesions and combined ramp and posterior root tears of the medial meniscus significantly intensified the changes in contact characteristics in the medial tibiofemoral joint compared to the intact condition. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Artit Boonrod
- Department of Orthopaedics, Faculty of Medicine, Khon Kaen University, 123 Mittraphap Road, Muang District, Khon Kaen, 40002, Thailand.
| | - Khananut Jaruwanneechai
- Department of Orthopaedics, Faculty of Medicine, Khon Kaen University, 123 Mittraphap Road, Muang District, Khon Kaen, 40002, Thailand
| | - Nadhaporn Saengpetch
- Department of Orthopedics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, 10400, Thailand
| | - Sermsak Sumanont
- Department of Orthopaedics, Faculty of Medicine, Khon Kaen University, 123 Mittraphap Road, Muang District, Khon Kaen, 40002, Thailand
| | - Parichat Prachaney
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
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Trasolini NA. Editorial Commentary: Early Clinical Results Are Promising for Meniscus Centralization as an Augment to Medial Meniscus Root Repair. Arthroscopy 2024; 40:1588-1590. [PMID: 38219132 DOI: 10.1016/j.arthro.2023.10.039] [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: 10/23/2023] [Accepted: 10/27/2023] [Indexed: 01/15/2024]
Abstract
Meniscal root tears remain a common problem, with devastating biomechanical and clinical consequences. Thankfully, numerous techniques have been developed to repair the symptomatic meniscal root tear. However, rates of conversion to arthroplasty are reported to be 21% to 33% at 10 years, and persistent extrusion of the meniscus at follow-up is a known limitation of current root repair techniques. There is also growing evidence that some medial meniscal root tears may be an effect of meniscal extrusion, rather than the cause of it. In that vein, failure to correct extrusion may be a key mechanism of clinical and radiographic failure despite successful meniscus root repair. Techniques that "centralize" the meniscus (such as centralization with anchors at the tibial rim, meniscotibial ligament repair, deep medial collateral ligament repair, or circumferential suture augmentation of the meniscus) may improve patient outcomes by better correcting meniscal extrusion. Indications could be extrusion greater than 3 mm and documented extrusion before the root tear.
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Wang M, Bai YP, Sun WB, Sun J. Two years follow-up of patients with knee varus deformity and medial meniscus extrusion after medial opening wedge high tibial osteotomy and arthroscopic meniscus centralization. INTERNATIONAL ORTHOPAEDICS 2024; 48:481-486. [PMID: 37725151 DOI: 10.1007/s00264-023-05959-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 08/22/2023] [Indexed: 09/21/2023]
Abstract
PURPOSE This is a retrospective study and aims to investigate the clinical outcomes of patients with knee varus deformity and extruded medial meniscus who underwent arthroscopic meniscus centralization and medial opening wedge high tibial osteotomy. METHODS A total of 24 patients were included in the trial, and arthroscopy intraoperative photographs and standing preoperative and postoperative radiographs were taken to analyze the mechanical tibiofemoral angle and tibial plateau inclination. Postoperative complications and knee motion were recorded, and the surgical results were evaluated using the knee society score. RESULTS The study observed four cases of surgery-related complications among all patients, but no major complications were reported. The surgery significantly improved knee flexion degrees and total knee range of motion. Satisfactory outcomes were shown in postoperative radiographs and secondary intraoperative photographs. The knee score increased from 39.6 ± 10.0 to 80.1 ± 9.0, and the functional score improved from 48.1 ± 6.9 to 89.4 ± 5.5. The preoperative tibial plateau inclination was 5.3 ± 0.7, while the postoperative data showed a decrease to 4.2 ± 0.7. The preoperative mechanical tibiofemoral angle was - 7.7 ± 1.0, and it improved in all patients postoperatively to 2.8 ± 0.9. CONCLUSION By alternating the knee biomechanics and significantly improving symptoms and quality of life, arthroscopic medial meniscus centralization and medial open wedge high tibial osteotomy units are confirmed to be an effective alternative treatment for knee varus deformity.
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Affiliation(s)
- Miao Wang
- Jiading Branch of Shanghai General Hospital, Jiading District Jiangqiao Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yun-Peng Bai
- Jiading Branch of Shanghai General Hospital, Jiading District Jiangqiao Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wei-Bing Sun
- Jiading Branch of Shanghai General Hospital, Jiading District Jiangqiao Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Jian Sun
- Jiading Branch of Shanghai General Hospital, Jiading District Jiangqiao Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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