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This series describes the clinicoradiological presentation of patients with mucoid ACL, partial arthroscopic debridement of ACL and outcomes. Knee Surg Sports Traumatol Arthrosc. Management of mucoid degeneration of the anterior cruciate ligament: a systematic review, https://doi.org/10.1186/s43019-021-00110-6, https://doi.org/10.1302/0301-620X.81B2.0810304, https://doi.org/10.1007/s00167-011-1433-0, https://doi.org/10.2214/ajr.182.5.1821283, https://doi.org/10.1007/s00167-012-1991-9, https://doi.org/10.1016/j.arthro.2003.11.030, https://doi.org/10.1016/j.jclinepi.2009.06.005, http://www.crd.york.ac.uk/PROSPERO/display_record.php?ID=CRD42018087782, https://doi.org/10.1046/j.1445-2197.2003.02748.x, http://journals.sagepub.com/doi/10.1177/2325967118786930, http://www.ijcrar.com/abstractview.php?ID=228&vol=4-11-2016&SNo=3, https://doi.org/10.1016/j.arthro.2008.02.004, https://doi.org/10.1016/j.jajs.2015.12.001, https://doi.org/10.4055/cios.2018.10.3.307, http://creativecommons.org/licenses/by/4.0/, http://creativecommons.org/publicdomain/zero/1.0/. Rajani AM, Shah UA, Mittal ARS, Gupta S, Garg R, Punamiya M. Knee Surg Relat Res. 2022 Mar;50(3):3000605221084865. doi: 10.1177/03000605221084865. ACL tears don't heal as such. Partial resection of the anterior cruciate ligament was done in seven cases and a complete resection in 18 cases. Accessibility Sagittal T2-weighted MRI view showing intact anterior, Fig. 2009. Learn how we can help 704 views Reviewed >2 years ago Thank 2013 Oct;99(6):693-7. doi: 10.1016/j.otsr.2013.04.010. Arch Orthop Trauma Surg. 2009 Jul;17(7):737-40. doi: 10.1007/s00167-008-0690-z. Mucoid degeneration of the anterior cruciate ligament (MD-ACL) was first characterized by Kumar et al. Int J Curr Res Aca Rev 4(11):1824 http://www.ijcrar.com/abstractview.php?ID=228&vol=4-11-2016&SNo=3, Kim TH, Lee DH, Lee SH, Kim JM, Kim CW, Bin SI (2008) Arthroscopic treatment of mucoid hypertrophy of the anterior cruciate ligament. The mean MINORS score was 9.5 out of 16 (412). 2007;15 (1): 73-86. Epidemiology The likelihood of mucoid change within ligaments and tendons increases with age 1. This appearance can mimic acute or chronic interstitial partial tears of the ligament. Conclusion: Treatment of ACL mucoid degeneration by this modality is effective in preventing recurrence, post-operative laxity and provides better functional outcome compared to the classical partial resection of the degenerated ACL. They respond well to a judicious arthroscopic release of the ACL with notchplasty. Individuals were included in the study if they had had complete MRIs of the affected knee at baseline and at 4-year follow-up, had thigh MRIs at baseline and had no additional surgery in the meantime. https://doi.org/10.1016/j.jclinepi.2009.06.005. With cruciate ligament ganglia, intact ACL fibers can often be visualized coursing through or around the cyst. Mucoid degeneration of the anterior cruciate ligament. MeSH 1. Ligaments hold our bones together and allow us to bend, twist, pivot and rapidly accelerate and decelerate and yet maintain the stability of our joints. Quality was assessed using the Methodological Index for Non-Randomized Studies (MINORS) criteria. Bookshelf This site needs JavaScript to work properly. Would you like email updates of new search results? The anterior cruciate ligament (ACL) is an important ligament in the knee. Treatment modalities for ACL ganglion cyst include arthroscopic excision or puncture, CT scan, and ultrasound-guided aspiration [25-26]. -, Fealy S, Kenter K, Dines JS, Warren RF. 4. 1173185. Loganathan D, Soma Sundar S, Sundar S, Sahanand S, Rajan DV. 2018 Apr;34(4):1054-1059. doi: 10.1016/j.arthro.2017.10.039. 2023 BioMed Central Ltd unless otherwise stated. The review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines and registered in the PROSPERO database (CRD42018087782). At the time the article was created Frank Gaillard had no recorded disclosures. Please enable it to take advantage of the complete set of features! Twenty-eight knees (97%) showed soft and/or delayed stops on postoperative Lachman testing. Preoperative and postoperative results of eleven patient were compared. 8600 Rockville Pike Anterior Cruciate Ligament, is an important structure of the knee joint. Mucoid degeneration of the anterior cruciate ligament (MD-ACL) was first characterized by Kumar et al. Management of mucoid degeneration of the anterior cruciate ligament: a systematic review. Papadopoulou P. The celery stalk sign. FOIA The extracted data were heterogeneous in terms of outcome assessment. 2011 Jun;25(6):650-2. AJR Am J Roentgenol. Postoperative pain relief was reported in seven studies. Epub 2008 Apr 18. A historical cohort of patients who underwent arthroscopic total or partial excision of the anterior cruciate ligament due to mucoid degeneration between 2011 and 2014 were reviewed. It can cause pain and to a meniscal tear. Arthroscopic management of mucoid degeneration of anterior cruciate ligament. Mucoid degeneration (MD) of the anterior cruciate ligament (ACL) is a rare pathological entity with disputed theories of origin. Radiologic findings associated with mucoid degeneration of the anterior cruciate ligament. PMC I have multiple issues - spondylolisthesis in L4/L5 and L5/S1, osteopenia and osteoarthritis. Epub 2018 Apr 21. Therefore, indications for ACL resection must be carefully selected. Mucoid degeneration of the anterior cruciate ligament. This ligament consists of two fibers, mainly, the anterio-medial and postero-lateral fibers, respectively. The .gov means its official. If you believe that this Physiopedia article is the primary source for the information you are refering to, you can use the button below to access a related citation statement. . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. Arthroscopic treatment of mucoid hypertrophy of the anterior cruciate ligament. On physical exam, the Lachman test for ACL instability is negative with an ACL ganglion. However, in most studies a proportion of patients simultaneously underwent other arthroscopic procedures for associated pathological knee conditions (44% meniscectomies in the study of Cha et al.). Keywords: Discussion: See this image and copyright information in PMC. They reported that a biopsy indicated mucoid degeneration and a relief of symptoms could be obtained through arthroscopic partial resection of the ligament. Skeletal Radiology. 2012 Sep;46(5):561-5. doi: 10.4103/0019-5413.101037. (48.2% (14/29 patients) with symptomatic instability), which may be due to the large number of patients with total resection of the ACL (58.6% (17 out of 29 patients)) (Table 4). Conclusion: Morice et al. Slim K, Nini E, Forestier D, Kwiatkowski F, Panis Y, Chipponi J (2003) Methodological index for non-randomized studies (MINORS): development and validation of a new instrument. Both anterior cruciate ligament ganglion cysts and mucoid degeneration have a high association with intraosseous cysts [3] (figures 1 and 2). MM and A performed the literature search, and data analysis. Bilateral Symptomatic Mucoid Degeneration of the Anterior Cruciate Ligament with Anterior Knee Pain but No Limited Knee Flexion. Knee. [18] did not comment on an association between MDACL and chondral or meniscal lesions: after the exclusion of that report, the total number of patients with associated chondral lesions was 226 out of 275 patients (82%) and 190 patients had meniscal lesions (69%). 2004;182(5):12831287. 2010 Jun;96(4):400-6. doi: 10.1016/j.otsr.2010.02.008. 2011 Aug;19(8):1326-33. doi: 10.1007/s00167-011-1433-0. and transmitted securely. Hotchen AJ, Demetriou C, Edwards D, Melton JTK. mucoid degeneration of acl mri. Coronal T2 weighted fat suppressed fast spin echo image showed complex anterior cruciate ligament ganglion cyst arising from superior aspect of ligament. Level of Evidence: Level IV. Terms and Conditions, Anatomically, it is arranged in a crossed pattern with the Posterior Cruciate Ligament, forming an 'X', therefore, it is also known as cruciform ligament. Clin Orthop Surg 10(3):307314. Physiopedia is not a substitute for professional advice or expert medical services from a qualified healthcare provider. The appearance can mimic acute or chronic interstitial partial tears of the ACL. sharing sensitive information, make sure youre on a federal Arch Orthop Trauma Surg. Average postoperative differential laxity on the Telos device was 8.3 mm (5 to 13 mm). Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. Mucoid degeneration of the anterior cruciate ligament (ACL) is a rare cause of anterior knee pain (AKP). Our study provides further evidence that arthroscopic total or partial excision of anterior cruciate ligament is a safe and effective treatment for mucoid degeneration of the anterior cruciate ligament, improving patient satisfaction and function without causing clinical instability in daily activities. PubMed Eight patients (72.7%, n=8) reported an improvement of knee instability, while three patients (27.3%, n=3) experienced an unchanged knee stability. Physiotherapy. MEDLINE, Embase, Google Scholar, Cochrane, ISI web of science and Scopus were comprehensively searched from the earliest year of indexing until 10 July 2020. -, McIntyre J, Moelleken S, Tirman P. Mucoid degeneration of the anterior cruciate ligament mistaken for ligamentous tears. J Orthop. Due to the heterogeneity of data, a meta-analysis was not possible, and a narrative review was deemed most appropriate. In most cases Physiopedia articles are a secondary source and so should not be used as references. 2011 Aug 1;19(8):1326-33. Average postoperative International Knee Documentation Committee (IKDC) and Knee Injury and Osteoarthritis Outcome Scores (KOOS) were 71.2 (42.5 to 92.0) and 78.2 (26.4 to 99). There was a high rate of association between degenerative lesions and MDACL, ranging from 39 to 96%. Eight studies reported postoperative instability. Keywords: mucoid degeneration, anterior cruciate ligament, acl reconstruction, arthroscopy, knee As there was no control group in any of the studies and the natural history of MDACL is not known, the postoperative improvement may have been attributed to the placebo effect, simultaneous arthroscopic procedures or the postoperative rehabilitation, or may be due to the pain having resolved without treatment at all. Four studies reported only postoperative scores, which were comparable to those in other studies. Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) flowchart illustrating the selections of trials included in the systematic review. National Library of Medicine Mucoid degeneration of both ACL and PCL. CONFLICT OF INTEREST: No potential conflict of interest relevant to this article was reported. https://doi.org/10.1302/0301-620X.81B2.0810304, Article Springer Nature. Epub 2018 Aug 22. Arthroscopy. 2011. Mucoid degeneration of the anterior cruciate ligament (ACL) is regarded as a degenerative change in the ligament, which is clinically presented with pain on full extension or flexion in the middle-aged population. What Is Mucoid Degeneration of the ACL? There is strong association between MDACL and chondral and meniscal lesions, which may support the theory that MDACL is a degenerative process. Postoperative follow-up included standard radiography and dynamic examination, measuring laxity with a Telos device. AJR Am J Roentgenol. Advanced MR imaging of the cruciate ligaments. However, the authors did not report whether there were any other patients with symptomatic instability. The prevalence of mucoid degeneration of the ACL has been reported to be 0.43% [ 5 ]. I have persistent pain in the back of that knee that is exacerbated by walking and bending it. Conclusions: Mucoid degeneration of the ACL is a clinical condition afflicting active middle-aged people without a single significant traumatic episode with a specific MRI picture. Lintz F, Pujol N, Boisrenoult P, Bargoin K, Beaufils P, Dejour D. Knee Surg Sports Traumatol Arthrosc. In this review, the mean age of patients ranged from 31 to 78years; mean age was highest in the study of Kim et al. Bookshelf Patients will . HHS Vulnerability Disclosure, Help Bergin D, Morrison WB, Carrino JA et-al. Categories were determined in accordance with the study of Ekhtiari et al. Lintz F, Pujol N, Boisrenoult P, Bargoin K, Beaufils P, Dejour D. Anterior cruciate ligament mucoid degeneration: a review of the literature and management guidelines. A September 2018 MRI of the left knee showed anterior cruciate ligament and mucoid degeneration with intra cruciate ganglion . Orthop Traumatol Surg Res 99(6):693697, Khanna G, Sharma R, Bhardwaj A, Gurdutta HS, Agrawal DK, Rathore AS (2016) Mucoid degeneration of the anterior cruciate ligament: partial arthroscopic debridement and outcomes. (B) Partial resection, MeSH [Diagnosis and treatment of anterior cruciate ligament cysts]. FOIA The site is secure. Pan African Medical Journal. Mucoid degeneration of acl (anterior cruciate ligament) is not a common problem and mostly it is found in female patients. Clipboard, Search History, and several other advanced features are temporarily unavailable. Sagittal proton density-weighted magnetic resonance image shows ill-defined anterior cruciate ligament with increased signal intensity and a celery stalk appearance of intact fibers. 8600 Rockville Pike Symptomatic ACL mucoid degeneration in middle-age athletes. https://doi.org/10.1007/s002560100336, Narvekar A, Gajjar S (2004) Mucoid degeneration of the anterior cruciate ligament. All studies focused on the outcome of arthroscopic debridement of MDACL, with no studies on conservative treatment. This site needs JavaScript to work properly. Mucoid degeneration of the ACL is suspected when an apparently thickened and ill-defined ligament with increased signal intensity on all sequences in MRI is identified in a patient with physically intact ligament and no obvious trauma history. Bergin et al. All patients with a preoperative limited ROM (100%, n=9) reported a return to a normal (subjective) ROM. (A) Bulging of, Fig. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. ANZ J Surg 73(9):712716. -, Makino A, Pascual-Garrido C, Rolon A, Isola M, Muscolo DL. Coronal proton density-weighted magnetic resonance imaging shows a thickening of the anterior cruciate ligament. Mucoid degeneration is characterized by an increase in the mucoid ground substance in the connective tissue containing glycoprotein and mucoprotein [ 4 ]. Fourteen knees (48%) had limited flexion, on average 97 degrees. What is myxoid degeneration treatment? 2022 Jun 2;20(1):225-228. doi: 10.33314/jnhrc.v20i01.4182. Careers. Dietary management and various treatments Scanning and diagnostic . Mucoid degeneration (MD) of the anterior cruciate ligament (ACL) is a benign knee pathology, which is often indicated for surgical treatment if symptomatic. The https:// ensures that you are connecting to the Epub 2011 Feb 18. Hypothesis: I get PT and acupuncture, have had several epidural injections, and am trying hard to avoid osteoporosis meds (was on bisphosphonates for many years many years ago) as well as spinal fusion. eCollection 2022 May-Jun. The mean MINORS score was 9.5 (range 412). Thirteen patients were treated with complete ACL resection for symptomatic MD of the ACL from 2006-2016. Rehabilitation, orthophony, crenotherapy. A long duration of non-specific knee pain in a patient should be evaluated with MRI. Post-debridement arthroscopic view showing yellowish lesion of the anterior cruciate ligament which was debrided. Anatomically, it is arranged in a crossed pattern with the Posterior Cruciate Ligament, forming an 'X', therefore, it is also known as cruciform ligament. In this systematic review we found that arthroscopic debridement resulted in good pain relief and improved range of motion and clinical outcome scores. Does Femoral Intercondylar Notch Volume Differ in Anterior Cruciate Ligament-Injured Adult Patients Compared to the Uninjured? 2011 Aug;19(8):1326-33. doi: 10.1007/s00167-011-1433-0. Online ahead of print. Ahuja A, Parekh C, Salomon A, Lawande M, Daftary A. Skeletal Radiol. Nowadays, orthobiologics such as platelet-rich plasma (PRP) are increasingly used in ligament surgeries to improve healing. MRI - Interstitial ACL tear With Mild knee joint effusion ,No evidence of discontinuation of fibre Can Interstitial ACL tear heal without surgery Asked for Male, 22 Years 78 Views v Dr. Abhishek Kaushik Joint Replacement Surgeon | Delhi 1/1 people found this helpful Hi. Seventeen females (67%) and eight males (33%) were included in the final analysis. GG and AM interpreted the results and reviewed the manuscript. Postoperative symptomatic instability was not common in eight studies, but was observed in 48% of patients in the study of Lintz et al., with two patients having a delayed ACL reconstruction. Unable to process the form. Symptomatic ACL mucoid degeneration in middle-age athletes. The aetiology of MDACL is not fully understood, hence, there are multiple theories on this. J Bone Joint Surg Ser B 81(2):304305. Arthroscopy. eCollection 2022 May-Jun. in 1999 [1]. Management of mucoid degeneration of the anterior cruciate ligament: a systematic review. CAS 8600 Rockville Pike It has recently been postulated that mucoid degeneration of the ACL is related to the medial knee compartment joint space loss in patients with osteoarthritis or in the OA risk group 6. For non-comparative studies, this consists of eight questions. None of the studies was a randomised controlled trial and none had a control group. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. Instrumental treatment. The primary intervention was arthroscopic ACL debridement in eight studies; this was combined with notchplasty in cases of impingement with the lateral wall of the notch in five studies [6, 14, 16,17,18] (Table 3). Initially, partial weightbearing is allowed. Careers. Treatment of ACL mucoid degeneration by arthroscopic resection is effective for posterior pain and flexion limitation. . A positive Lachman test and a negative pivot shift were noted after surgery in all cases. When refering to evidence in academic writing, you should always try to reference the primary (original) source. A posterior approach will allow for the detection of changes by probing the ligament and mucoid material can be expressed. What you feel (symptoms) You feel heaviness in knee joint. Noninfiltrating synovial cysts of the ACL were excluded. This study hypothesized that arthroscopic debridement of MDACL would provide patients with improvement in pain, range of movement and functional outcome scores. Preoperative assessment included a questionnaire, clinical examination (Lachman and pivot shift tests), MRI and standard radiography. government site. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2018 Sep;10(3):307-314. doi: 10.4055/cios.2018.10.3.307. (2018) Radiology. Ligaments and tendons are accumulated by mucoid change might display a thickened and/or hypertrophied appearance, with an increase in signal intensity. Despite the low rate of complications in all studies, there was a high incidence of postoperative knee laxity, demonstrated by a positive Lachman test, in most studies. Orthop Traumatol Surg Res. Posterior pain disappeared in 27 cases (93%), on average 3.7 weeks after the procedure. maude adverse event report: genzyme biosurgery (ridgefield) synvisc one intra-articular hyaluronic acid 2008 Jun;24(6):642-9. doi: 10.1016/j.arthro.2008.02.004. It contrasts with cystic lesions better known as synovial cysts or intercondylar fossa cysts. Second, methodological quality assessment showed that three studies had low methodological quality. (A) Bulging of the hypertrophied anterior cruciate ligament. Arthroscopic treatment of mucoid hypertrophy of the anterior cruciate ligament. All nine studies included patients with symptomatic MDACL confirmed by MRI (Table3). Recent studies have reported that the prevalence of ACL mucoid degeneration is approximately 2-14% [20, 23, 24, 25]. Complete resection of the ACL without ACL reconstruction is a reliable treatment for symptomatic cases of mucoid degenerated ACL. https://doi.org/10.2214/ajr.182.5.1821283, Article The success of treatment for MDACL and the subsequent risk of instability is not known. Score: 4.7/5 (45 votes) . Roberts CC, Towers JD, Spangehl MJ et-al. Results: 2. 2011. https://doi.org/10.4055/cios.2018.10.3.307, University Hospitals of Derby and Burton, Uttoxeter Rd, Derby, DE22 3NE, UK, Trauma and Orthopaedic Speciality Trainee, West Midlands Deanery, Birmingham Rotation, Birmingham, UK, University Hospitals Plymouth NHS Trust, Plymouth, UK, University of Alexandria, Alexandria, Egypt, University Hospital Coventry and Warwickshire, Clifford Bridge Road, Walsgrave, Coventry, CV2 2DX, UK, You can also search for this author in The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). The purpose of this study was to investigate the outcome of management of MDACL by performing a systematic review of methods of treatment that have been reported. All patients (100%, n=11) reported a good to very good surgery satisfaction. Arthroscopic resection of ACL mucoid degeneration is effective for treating pain and flexion limitation, but at the expense of anterior laxity. Conclusions. Mucoid degeneration of the ACL is a rare cause of knee pain.1-8) This lesion of the ACL was first reported by Kumar et al.3) in 1999. ACL mucoid degeneration is an uncommon pathological condition; the pathogenesis, prevalence, and . Privacy To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Sasaki R, Nagashima M, Takeshima K, Otani T, Okada Y, Aida S, Ishii K. J Int Med Res. . Presentation Patients usually present with nonspecific posterior knee pain with restriction of flexion. (61years), which was the largest study and represented more than one third of the total patients included in this review. J Knee Surg. Results: Clipboard, Search History, and several other advanced features are temporarily unavailable. Hamal B, Karmacharya M, Mangal Joshi K, Gorkhali R. J Nepal Health Res Counc. Each study was scored 02 on each question, with a global ideal score of 16. Histological diagnosis was established by tissue biopsy in all patients in five studies, with a total of 87 knees. Only nine studies met our inclusion criteria and they were all case series. official website and that any information you provide is encrypted Epub 2010 May 8. https://doi.org/10.1016/j.arthro.2008.02.004, Morice A, Coupry A, Lintz F, Robert H (2013) Reduction plasty for hypertrophic anterior cruciate ligament mucoid degeneration: clinical and knee laxity outcomes in 23 cases. Any discrepancy was resolved by the senior author. MDACL is not uncommon, however, it is rarely symptomatic [4, 5]. 2022 Mar;14(1):76-89. doi: 10.4055/cios20163. 42 Mucoid degeneration of the anterior cruciate ligament with erosion of the lateral femoral condyle P. Melloni, R. Valls, M. Yuguero, A. Saez Medicine All rights reserved. eCollection 2013. official website and that any information you provide is encrypted National Library of Medicine The origin of MDACL may be degenerative or traumatic. California Privacy Statement, 2011;19(3):408411. Twenty knees (69%) had associated cartilaginous lesions and 19 (66%) had meniscal lesions. There is no consensus on treatment and evidence is scarce. Anterior cruciate ligament mucoid degeneration. Sep 2017 - Feb 20186 months. ACL ganglion cyst at arthroscopy may appear as a cystic mass with . Later studies reported that changes consist of mucoid Results degeneration, neovascularisation, and tendon sheath hyper- Nineteen patients met the inclusion criteria and were inclu- trophy. official website and that any information you provide is encrypted There was strong association between degenerative changes and MDACL (82% having chondral and 69% meniscal lesions), which might suggest that MDACL is a degenerative process. The mean age of patients ranged from 31 to 78years. The site is secure. Mucoid degeneration, is the irreversible degeneration of the tissue with the infiltration of mucin(glycosaminoglycans) within the fibers[1][2]. J Arthrosc Joint Surg 3(1):2833. The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). The patient presented with extension block of the knee. Unable to load your collection due to an error, Unable to load your delegates due to an error. Histologically, there is a mucoid substance in connective tissue containing glycoproteins and mucoproteins [8]. Bone and joint imaging. Arthroscopic examination analyzed the ACL aspect and its associated lesions (meniscus, cartilage). Besides, the patient may also have trouble in moving. statement and It results in postoperative laxity, but rarely in frank instability. Physiopedia articles are best used to find the original sources of information (see the references list at the bottom of the article). This ranged from 90 to 95% in all studies, except in the report by Kim et al., where only 53.8% of patients (57/106) had complete pain relief after surgery. Anterior cruciate ligament mucoid degeneration: a review of the literature and management guidelines. Reference article, Radiopaedia.org (Accessed on 04 Mar 2023) https://doi.org/10.53347/rID-3615, Case 11: with Hoffa fat pad ganglion cyst, Case 12: tibial nerve schwannoma and ACL mucoid degeneration, Case 1: Complete ACL tear and meniscal tears, Case 2: Anomalous insertion of the medial meniscus, View Frank Gaillard's current disclosures, see full revision history and disclosures, anterior cruciate ligament ganglion cysts, anterior cruciate ligament avulsion fracture, posterior cruciate ligament avulsion fracture, Ahlback classification system in assessing osteoarthritis of the knee joint, Kellgren and Lawrence system for classification of osteoarthritis, anterior cruciate ligament mucoid degeneration, MRI grading system for meniscal signal intensity, Mucoid degeneration of the anterior cruciate ligament, congenital or acquired synovial tissue entrapment between ACL fibers. sharing sensitive information, make sure youre on a federal government site. Mucoid degeneration of the anterior cruciate ligament is a rare pathological entity. Sweed T, Mussa M, El-Bakoury A, Geutjens G, Metcalfe A. Knee Surg Relat Res. Secondary signs include bone bruising, meniscal tears, anterior subluxation of the tibia and other ligamentous injuries. Surgical treatment involves arthroscopic debridement of ACL, with partial or total resection, occasionally combined with ACL reconstruction. The total number of patients with symptomatic instability was 18 out of 288 (6%). Epub 2011 Feb 18. Sasaki R, Nagashima M, Takeshima K, Otani T, Okada Y, Aida S, Ishii K. J Int Med Res.