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Guan Y, Li J, Wei Y, Shi PT, Yang C, Yun X, Quan Q, Wang WJ, Yu XG, Wei M. Brain functional connectivity alterations in patients with anterior cruciate ligament injury. Brain Res 2024; 1836:148956. [PMID: 38657888 DOI: 10.1016/j.brainres.2024.148956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/16/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
Recent advancements in neuroimaging have illustrated that anterior cruciate ligament (ACL) injuries could impact the central nervous system (CNS), causing neuroplastic changes in the brain beyond the traditionally understood biomechanical consequences. While most of previous functional magnetic resonance imaging (fMRI) studies have focused on localized cortical activity changes post-injury, emerging research has suggested disruptions in functional connectivity across the brain. However, these prior investigations, albeit pioneering, have been constrained by two limitations: a reliance on small-sample participant cohorts, often limited to two to three patients, potentially limiting the generalizability of findings, and an adherence to region of interest based analysis, which may overlook broader network interactions. To address these limitations, our study employed resting-state fMRI to assess whole-brain functional connectivity in 15 ACL-injured patients, comparing them to matched controls using two distinct network analysis methods. Using Network-Based Statistics, we identified widespread reductions in connectivity that spanned across multiple brain regions. Further modular connectivity analysis showed significant decreases in inter-modular connectivity between the sensorimotor and cerebellar modules, and intra-modular connectivity within the default-mode network in ACL-injured patients. Our results thus highlight a shift from localized disruptions to network-wide dysfunctions, suggesting that ACL injuries induce widespread CNS changes. This enhanced understanding has the potential to stimulate the development of strategies aiming to restore functional connectivity and improve recovery outcomes.
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Affiliation(s)
- Yu Guan
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Ji Li
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China
| | - Yu Wei
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China
| | - Peng-Tao Shi
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Chen Yang
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Xing Yun
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Qi Quan
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China; Department of Orthopedic Surgery, Key Laboratory of Musculoskeletal Trauma &War Injuries PLA, Beijing Key Lab of Regenerative Medicine in Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
| | - Wen-Juan Wang
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China
| | - Xin-Guang Yu
- Department of Neurosurgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Min Wei
- Department of Orthopedics, The Fourth Medical Center, Chinese PLA General Hospital, Beijing 100142, China; Medical School of Chinese PLA, Beijing 100853, China.
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Lau YK, Iyer K, Shetye S, Friday CS, Dodge GR, Hast MW, Casal ML, Gawri R, Smith LJ. Evaluation of tendon and ligament microstructure and mechanical properties in a canine model of mucopolysaccharidosis I. J Orthop Res 2024; 42:1409-1419. [PMID: 38368531 PMCID: PMC11161329 DOI: 10.1002/jor.25813] [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: 09/11/2023] [Revised: 01/16/2024] [Accepted: 02/02/2024] [Indexed: 02/19/2024]
Abstract
Mucopolysaccharidosis (MPS) I is a lysosomal storage disorder characterized by deficient alpha-l-iduronidase activity, leading to abnormal accumulation of glycosaminoglycans (GAGs) in cells and tissues. Synovial joint disease is prevalent and significantly reduces patient quality of life. There is a strong clinical need for improved treatment approaches that specifically target joint tissues; however, their development is hampered by poor understanding of underlying disease pathophysiology, including how pathological changes to component tissues contribute to overall joint dysfunction. Ligaments and tendons, in particular, have received very little attention, despite the critical roles of these tissues in joint stability and biomechanical function. The goal of this study was to leverage the naturally canine model to undertake functional and structural assessments of the anterior (cranial) cruciate ligament (CCL) and Achilles tendon in MPS I. Tissues were obtained postmortem from 12-month-old MPS I and control dogs and tested to failure in uniaxial tension. Both CCLs and Achilles tendons from MPS I animals exhibited significantly lower stiffness and failure properties compared to those from healthy controls. Histological examination revealed multiple pathological abnormalities, including collagen fiber disorganization, increased cellularity and vascularity, and elevated GAG content in both tissues. Clinically, animals exhibited mobility deficits, including abnormal gait, which was associated with hyperextensibility of the stifle and hock joints. These findings demonstrate that pathological changes to both ligaments and tendons contribute to abnormal joint function in MPS I, and suggest that effective clinical management of joint disease in patients should incorporate treatments targeting these tissues.
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Affiliation(s)
- Yian Khai Lau
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
| | - Keerthana Iyer
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
| | - Snehal Shetye
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
| | - Chet S. Friday
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
| | - George R. Dodge
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
- Mechano Therapeutics LLC, 3401 Grays Ferry Ave, Philadelphia, PA 19146
| | - Michael W. Hast
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
| | - Margret L. Casal
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, 3900 Spruce St, Philadelphia, PA 19104 USA
| | - Rahul Gawri
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
| | - Lachlan J. Smith
- Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 3450 Hamilton Walk, Philadelphia, PA, 19104 USA
- Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104 USA
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Salamanna F, Caravelli S, Marchese L, Carniato M, Vocale E, Gardini G, Puccetti G, Mosca M, Giavaresi G. Proprioception and Mechanoreceptors in Osteoarthritis: A Systematic Literature Review. J Clin Med 2023; 12:6623. [PMID: 37892761 PMCID: PMC10607296 DOI: 10.3390/jcm12206623] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 09/26/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
PURPOSE Osteoarthritis (OA) is one of the most common chronic diseases in the world. It is frequently accompanied by high levels of persistent pain, as well as substantial impairments in function and functional capacity. This review aims to systematically analyze the changes in proprioception and related mechanoreceptors in OA patients. METHODS Studies from September 2013 to September 2023 were identified by conducting searches on the PubMed, Web of Science, and Scopus electronic databases following the PRISMA statement. One reviewer independently assessed and screened the literature, extracted the data, and graded the studies. The body of evidence underwent an evaluation and grading process using the ROBINS-I tool, which was specifically designed to assess the risk of bias in non-randomized studies of interventions. Results were summarized using descriptive methods. RESULTS A search through 37 studies yielded 14 clinical studies that were ultimately included. The primary focus of the studies was on the knee joint, particularly the posterior cruciate ligament (PCL). The studies found that PCL in OA patients had impaired proprioceptive accuracy, possibly due to changes in mechanoreceptors (Ruffini, Pacini, and Golgi Mazzoni corpuscles). This suggests that dysfunctional articular mechanoreceptors, especially in severe cases of OA, may contribute to reduced proprioception. Dynamic stabilometry also identified significant proprioceptive deficits in patients with knee articular cartilage lesions, underscoring the impact of such lesions on knee proprioception. CONCLUSIONS Literature data have shown that proprioceptive accuracy may play an important role in OA, particularly in the knee PCL and cartilage. However, the role of proprioception and related mechanoreceptors needs to be further clarified. Future studies focusing on the relationship between proprioception, OA disease, and symptoms, considering age and gender differences, and exploring OA joints other than the knee should be conducted to improve clinical and surgical outcomes in cases where proprioception and mechanoreceptors are impaired in OA patients.
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Affiliation(s)
- Francesca Salamanna
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (L.M.); (M.C.); (G.G.)
| | - Silvio Caravelli
- IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy; (S.C.); (M.M.)
| | - Laura Marchese
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (L.M.); (M.C.); (G.G.)
| | - Melania Carniato
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (L.M.); (M.C.); (G.G.)
| | - Emanuele Vocale
- 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy; (E.V.); (G.G.); (G.P.)
| | - Giammarco Gardini
- 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy; (E.V.); (G.G.); (G.P.)
| | - Giulia Puccetti
- 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy; (E.V.); (G.G.); (G.P.)
| | - Massimiliano Mosca
- IRCCS Istituto Ortopedico Rizzoli, Via Pupilli 1, 40136 Bologna, Italy; (S.C.); (M.M.)
| | - Gianluca Giavaresi
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (L.M.); (M.C.); (G.G.)
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Chen J, Chen S. Relationship Between Mechanoreceptors in the Posterior Cruciate Ligament and Patient Age or Osteoarthritis Severity. Orthop J Sports Med 2023; 11:23259671231168894. [PMID: 37332534 PMCID: PMC10273789 DOI: 10.1177/23259671231168894] [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: 12/11/2022] [Accepted: 01/24/2023] [Indexed: 06/20/2023] Open
Abstract
Background Mechanoreceptors in the posterior cruciate ligament (PCL) can produce proprioception, which is an important reason why patients choose cruciate-retaining total knee arthroplasty (TKA). The number of mechanoreceptors in the PCL of patients with knee osteoarthritis (OA) is unknown. Purpose To provide a theoretical basis for estimating the number of mechanoreceptors in the PCL by evaluating the relationship between this number and patient age or OA severity. Study Design Cross-sectional study; Level of evidence, 3. Methods An overall 28 PCLs from patients with knee OA were collected at the time of TKA and grouped according to patient age (group A, 60-69 years [n = 8]; group B, 70-79 years [n = 12]; group C, ≥80 years [n = 8]) and OA based on Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score (group I, ≤80 [n = 8]; group II, 81-120 [n = 10]; group III, >120 [n = 10]). Hematoxylin and eosin and S-100 immunohistochemical staining were performed on the slices near the tibial attachment of the PCL, and the number of mechanoreceptors in each slice was counted. Multifactor analysis of variance was used to evaluate the relationship between the number of mechanoreceptors and patient age or WOMAC score. Results The number of mechanoreceptors (mean ± SD) in groups A, B, and C was 24.00 ± 15.19, 30.92 ± 11.41, and 23.38 ± 11.39, respectively, with no significant between-group differences. The number of mechanoreceptors in groups I, II, and III was 43.50 ± 4.99, 25.00 ± 5.27, and 15.20 ± 5.61, with significant differences between groups I and II, groups I and III, and groups II and III (P < .001 for all). Conclusion In patients with knee OA, age had no significant effect on mechanoreceptor count, but the number of mechanoreceptors in the PCL decreased significantly with higher (worse) WOMAC score. These findings suggest that in patients of any age with high WOMAC scores, there may be little value as it relates to knee proprioception in performing a PCL-retaining TKA.
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Affiliation(s)
- Jinlong Chen
- Orthopedic and Joint Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shirong Chen
- Orthopedic and Joint Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Vandenrijt J, Callenaere S, Van der Auwera D, Michielsen J, Van Dyck P, Heusdens CHW. Posterior cruciate ligament repair seems safe with low failure rates but more high level evidence is needed: a systematic review. J Exp Orthop 2023; 10:49. [PMID: 37099086 PMCID: PMC10133428 DOI: 10.1186/s40634-023-00605-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/31/2023] [Indexed: 04/27/2023] Open
Abstract
PURPOSE To discuss recent literature on posterior cruciate ligament (PCL) repair and report on the clinical and radiological outcomes. METHODS A systematic review was conducted according to the PRISMA guidelines. In August 2022, three databases (PubMed, Scopus, and Cochrane Library) were searched for studies on PCL repair by two independent reviewers. Articles published between January 2000 and August 2022 focussing on the clinical and/or radiological outcomes, following PCL repair, were included. Patient demographic data, clinical evaluations, patient‑reported outcome measures, post-operative complications and radiological outcomes were extracted. RESULTS Nine studies met the inclusion criteria, covering 226 patients with a mean age ranging from 22.4 to 38.8 years and mean follow-up periods ranging from 14 to 78.6 months. Seven studies (77.8%) were level IV and two studies (22.2%) were level III. Arthroscopic PCL repair was performed in four studies (44.4%) while the remaining five studies (55.6%) described open PCL repair. In four studies (44.4%) additional suture augmentation was applied. Arthrofibrosis affected a combined total of 24 patients (11.7%; range 0-21.0%) making it the most common complication and the overall failure rate was 5.6%, ranging from 0 to 15.8%. Two studies (22.2%) performed post-operative MRI and confirmed PCL healing. CONCLUSION This systematic review indicates that PCL repair can be a safe procedure with an overall failure rate of 5.6%, ranging from 0% to 15.8%. However, more high quality research is necessary before widespread clinical implementation is warranted. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Jasper Vandenrijt
- Orthopaedics, Antwerp University Hospital, Drie Eikenstraat 655, Edegem, 2650, Belgium
| | - Sofie Callenaere
- Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610, Belgium
| | - Dries Van der Auwera
- Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610, Belgium
| | - Jozef Michielsen
- Orthopaedics, Antwerp University Hospital, Drie Eikenstraat 655, Edegem, 2650, Belgium
- Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610, Belgium
| | - Pieter Van Dyck
- Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610, Belgium
- Department of Radiology, Antwerp University Hospital, Drie Eikenstraat 655, Edegem, 2650, Belgium
| | - Christiaan H W Heusdens
- Orthopaedics, Antwerp University Hospital, Drie Eikenstraat 655, Edegem, 2650, Belgium.
- Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610, Belgium.
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Xu C, Liu T, Wang M, Liu C, Li B, Lian Q, Chen T, Chen F, Qiao S, Wang Z. Comparison of proprioception recovery following anterior cruciate ligament reconstruction using an artificial graft versus an autograft. BMC Musculoskelet Disord 2022; 23:1056. [PMID: 36463165 PMCID: PMC9719127 DOI: 10.1186/s12891-022-06019-9] [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: 05/06/2022] [Accepted: 11/23/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND To compare proprioception recovery after anterior cruciate ligament reconstruction (ACLR) with a hamstring tendon autograft versus the artificial Ligament Advanced Reinforcement System (LARS). MATERIAL AND METHODS Forty patients (9 females, 31 males) with anterior cruciate ligament (ACL) rupture were enrolled in this prospective study. Patients were randomized to two groups, 1) ACLR using a hamstring tendon autograft (n = 20) or 2) ACLR using artificial LARS (n = 20). Proprioception was assessed with knee joint position sense (JPS) passive-passive test at 45° and 75° flexions, with the contralateral healthy knee as a control baseline to calculate the JPS error. Knee JPS absolute error was used as the main outcome variable and defined as the absolute difference between the reproduction and target angles. RESULTS JPS error in both groups at 3 months after ACLR was significantly higher than that at 12 months. However, no significant difference in JPS error was detected between the LARS and autograft groups at either 3 or 12 months after ACLR. Analyzing JPS data by grouping patients according to whether ACLR was performed more or less than 1 year following injury regardless of graft type showed a statistically significant difference between the groups at 3 months, but not at 12 months, after ACLR. Patients receiving the graft within 1 year of injury had a lower JPS error than those receiving the graft more than 1 year after injury at 3 months. No complications were associated with either ACLR method. CONCLUSION ACLR with a hamstring tendon autograft or LARS artificial graft is similarly safe and effective for recovering knee proprioception.
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Affiliation(s)
- Changli Xu
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China ,Department of Orthopedics, The Third Affiliated to the Naval Military Medical University, Shanghai, 201805 People’s Republic of China ,The fifth Outpatients Department, The 980th Hospital of Joint Logistic Support Force, Shijiazhuang, 050083 People’s Republic of China
| | - Tianze Liu
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China
| | - Miao Wang
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China ,Department of Orthopedics, The Third Affiliated to the Naval Military Medical University, Shanghai, 201805 People’s Republic of China
| | - Chang Liu
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China ,Department of Orthopedics, The 900th Hospital of Joint Logistic Support Force, Fuzhou, Fujian Province 350025 People’s Republic of China
| | - Bo Li
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China
| | - Qiujian Lian
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China
| | - Tongjiang Chen
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China
| | - Fengmei Chen
- Department of Orthopedics, The Third Affiliated to the Naval Military Medical University, Shanghai, 201805 People’s Republic of China
| | - Suchi Qiao
- Department of Orthopedics, The Third Affiliated to the Naval Military Medical University, Shanghai, 201805 People’s Republic of China
| | - Zhiwei Wang
- grid.73113.370000 0004 0369 1660Department of Orthopedics, Changhai Hospital, Naval Medical University, Shanghai, 200433 People’s Republic of China ,Department of Orthopedics, The Third Affiliated to the Naval Military Medical University, Shanghai, 201805 People’s Republic of China
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Tan L, Liang J, Feng J, Cao Y, Luo J, Liao Y, Cao X, Wang Z, He J, Wu S. Medial meniscus tears are most prevalent in type I ACL tears, while type I ACL tears only account for 8% of all ACL tears. Knee Surg Sports Traumatol Arthrosc 2022; 31:2349-2357. [PMID: 35842857 DOI: 10.1007/s00167-022-07068-2] [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: 11/24/2021] [Accepted: 07/01/2022] [Indexed: 11/24/2022]
Abstract
PURPOSE This study aimed to assess the distribution of different anterior cruciate ligament (ACL) tear locations in different magnetic resonance imaging (MRI) planes, and to explore the relationships of ACL tear types with both meniscus injuries and bone bruising. METHODS A retrospective study was performed in patients under 60 years old who underwent MRI scans in the sagittal and coronal oblique planes of the knee for ACL tears between 2014 and 2020. Patients with reports of chronic tears, partial tears, or prior surgeries were excluded. Tear locations were classified into five types, and the meniscus tear measurement variables included the presence of ramp, root, bucket-handle, and other types of tears. All injuries were confirmed by arthroscopy. Meanwhile, the presence and location of bone bruising were analysed and scored with the Whole-Organ Magnetic Resonance Imaging Score (WORMS) bone bruising subscale. RESULTS A total of 291 patients were included. The prevalence rates of type I and type III injuries were 23/291 (7.9%) and 145/291 (49.8%) in the sagittal plane and 22/291 (7.6%) and 179/291 (61.5%) in the oblique coronal plane, respectively. The prevalence of medial meniscus tears with ACL tears was 126/291 (43.3%), while that of lateral meniscus tears with ACL tears was 77/291 (26.5%). The highest prevalence of medial meniscus injury with ACL tears was 15/22 (68.2%) for type I injuries. Bone bruises were located on the lateral femoral center in 125 patients (46%) and on the lateral tibia posterior in 132 patients (48%); the common areas of bone bruising were slightly correlated with type III ACL tears but not correlated with type I ACL tears. CONCLUSION The plane in which an MRI scan is performed affects the classification of ACL tears. The tear type is associated with the prevalence of medial meniscus injuries, and medial meniscus tears are most prevalent in type I ACL tears. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Lingjie Tan
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Jiehui Liang
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Jing Feng
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Yangbo Cao
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Jiewen Luo
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Yunjie Liao
- Department of Radiology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Xu Cao
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Zili Wang
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Jinshen He
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China.
| | - Song Wu
- Department of Orthopaedic Surgery, Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
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