2001;30(6):312315. proposed a different intervention called reduction plasty, whereby the hypertrophic ACL is reduced to normal size without excision of all mucoid substance [17]. 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. Indian J Orthop 46(5):561565. and transmitted securely. Sasaki R, Nagashima M, Takeshima K, Otani T, Okada Y, Aida S, Ishii K. J Int Med Res. Online ahead of print. 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. . https://doi.org/10.1007/s00167-011-1433-0, Article 2009. (61years), which was the largest study and represented more than one third of the total patients included in this review. Posterior pain disappeared in 27 cases (93%), on average 3.7 weeks after the procedure. Arthroscopy. Epub 2011 Feb 18. -, Fealy S, Kenter K, Dines JS, Warren RF. Radiologic findings associated with mucoid degeneration of the anterior cruciate ligament. It results in postoperative laxity, but rarely in frank instability. Noninfiltrating synovial cysts of the ACL were excluded. -Delivered Pre-rehab care for breast cancer and thoracic cancer cases. Results: The lesion may manifest as an elongated cyst along the long axis of the ACL, or as an enlarged ACL. https://www.physio-pedia.com/index.php?title=Anterior_Cruciate_Ligament_(ACL)_Mucoid_Degeneration&oldid=253974, Difficulty in climbing stairs, cross-leg sitting, squatting, Primary condition- Osteoarthritis, degenerative menisci, meniscal tear, Impingement of the soft tissue in the vicinity. Second, methodological quality assessment showed that three studies had low methodological quality. Clipboard, Search History, and several other advanced features are temporarily unavailable. -, Makino A, Pascual-Garrido C, Rolon A, Isola M, Muscolo DL. Knee Surg Sports Traumatol Arthrosc. reported the largest percentage of patients (27.5%) with a positive pivot test. National Library of Medicine 2013 Oct;99(6):693-7. doi: 10.1016/j.otsr.2013.04.010. In the nine included studies, four different scores were used for outcome assessment. Unauthorized use of these marks is strictly prohibited. Learn how we can help 704 views Reviewed >2 years ago Thank 2004;182(5):12831287. Keywords: mucoid degeneration, anterior cruciate ligament, acl reconstruction, arthroscopy, knee Background: Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) flowchart illustrating the selections of trials included in the systematic review. Loganathan D, Soma Sundar S, Sundar S, Sahanand S, Rajan DV. Role of debulking mucoid ACL in unicompartmental knee arthroplasty: a prospective multicentric study. We report a case of a patient with mucoid degeneration of the ACL, presenting with posterior knee pain and no history of a major knee trauma. Skeletal Radiology. "Traumatic theory - post injury, ACL fibroblasts secrete glycosaminoglycans, the mucin substance within the ACL. The .gov means its official. 2022 Mar;50(3):3000605221084865. doi: 10.1177/03000605221084865. Individuals with mucoid degeneration of the ACL were excluded. Both anterior cruciate ligament ganglion cysts and mucoid degeneration have a high association with intraosseous cysts [3] (figures 1 and 2). Morice et al. Epub 2008 Apr 18. The mean age of patients ranged from 31 to 78years. Keywords: On clinical examination, the active range of motion showed a flexion deficit. A 48-year-old-male patient presented with knee pain and limitation of motion. Background: Mucoid degeneration of the anterior cruciate ligament (ACL) is an uncommon non-traumatic cause of knee pain and motion restriction, typically seen in a middle-aged population. Bookshelf (A) Bulging of, Fig. ANZ J Surg 73(9):712716. International Journal of Orthopaedics. Bookshelf 2011. Arthroscopic treatment of mucoid hypertrophy of the anterior cruciate ligament. 2011 Mar;25(3):262-5. What Is Mucoid Degeneration of the ACL? Patients and methods: Third, clinical outcomes were reported using a variety of scores, so a data meta-analysis was not possible. Open Grey database was searched for grey literature using the same keywords. 2011 Aug;19(8):1326-33. doi: 10.1007/s00167-011-1433-0. Coronal T2 weighted fat suppressed fast spin echo image showed complex anterior cruciate ligament ganglion cyst arising from superior aspect of ligament. In this review, the mean age of patients ranged from 31 to 78years; mean age was highest in the study of Kim et al. Epub 2008 Dec 17. The presence of intraligamentous mucoid degeneration in the ACL is demonstrated as a source of knee pain without instability and partial ACL debridement did not preclude adequate knee stability. 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. government site. 2007;15 (1): 73-86. It may lead to knee pain. -, Kumar A, Bickerstaff DR, Grimwood JS, Suvarna SK. By using this website, you agree to our Hotchen AJ, Demetriou C, Edwards D, Melton JTK. (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). Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. Anterior cruciate ligament mucoid degeneration. Initially, partial weightbearing is allowed. Am J Roentgenol 182(5):12831287. 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. Accessed 1 Mar 2021. Method. Partial/Total ACL resection arthroscopically- There is marked improvement in the range and reduced posterior pain, but at the cost of increased post-operative knee laxity. Conclusion: Rajani AM, Shah UA, Mittal ARS, Gupta S, Garg R, Punamiya M. Knee Surg Relat Res. Ever since mucoid degeneration of the anterior cruciate ligament (MD-ACL) was named by Kumar et al. 2008 Jun;24(6):642-9. doi: 10.1016/j.arthro.2008.02.004. Preoperative assessment included a questionnaire, clinical examination (Lachman and pivot shift tests), MRI and standard radiography. Mucoid degeneration itself is described as a yellow or brown substance which can be either seen through the most anterior fibers of the ACL or found by probing between them [ 19, 35] (Fig. Treatment options include non-operative management, arthroscopic debridement with a biceps tenotomy or tenodesis, complete or partial repair, patch augmentation, superior capsular reconstruction, muscle/tendon transfer and reverse total shoulder arthroplasty. For non-comparative studies, this consists of eight questions. Mucoid degeneration of the anterior cruciate ligament (MD-ACL) was first characterized by Kumar et al. 42 Mucoid degeneration of the anterior cruciate ligament with erosion of the lateral femoral condyle P. Melloni, R. Valls, M. Yuguero, A. Saez Medicine Orthop Traumatol Surg Res. At the time the article was created Frank Gaillard had no recorded disclosures. Mucoid degeneration of the anterior cruciate ligament (ACL) is a very rare cause of knee pain. It is characterized by infiltration of mucoid like substance (glycosaminoglycans) interspersed within the substance of ACL causing knee pain and limited motion. 2012;4 (2): 167-70. Hamal B, Karmacharya M, Mangal Joshi K, Gorkhali R. J Nepal Health Res Counc. The mean follow up ranged from 13 to 72months. Some case reports have been published; however, it is difficult to diagnose and is often underdiagnosed or misdiagnosed because of its pathophysiological ambiguity. 2013 Oct;99(6):693-7. doi: 10.1016/j.otsr.2013.04.010. Before The https:// ensures that you are connecting to the Sweed T, Mussa M, El-Bakoury A, Geutjens G, Metcalfe A. Knee Surg Relat Res. National Library of Medicine 2011 Jun;25(6):650-2. Radiologic findings associated with mucoid degeneration of the anterior cruciate ligament. Careers. Sep 2017 - Feb 20186 months. Truncation means that the . 8600 Rockville Pike 2021 Aug 21;33(1):26. doi: 10.1186/s43019-021-00110-6. 2 ). Along with that, it also controls the internal rotation. The rate of simultaneous meniscectomy ranged from 13 to 44%. 2. Mucoid degeneration of the anterior cruciate ligament (MDACL) is a rare entity, first described by Kumar et al. Sixty-one patients underwent T2*WI and PDWI at 3, 6, and 12 months postoperatively. Mucoid degeneration of the anterior cruciate ligament. have described the following MRI criteria [4]: (1) high signal intensity in the T1 and T2 sequences, (2) increased ACL volume and (3) continuous fibres of ACL shown in the T2 sequence. Google Scholar, Chudasama CH, Chudasama VC, Prabhakar MM (2012) Arthroscopic management of mucoid degeneration of anterior cruciate ligament. Khanna et al. 2012 Sep;46(5):561-5. doi: 10.4103/0019-5413.101037. That is usually the journal article where the information was first stated. (B) Partial resection, MeSH J Sports Med Phys Fitness 48(4):483487, PubMed ACL tears don't heal as such. 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. {"url":"/signup-modal-props.json?lang=us"}, Gaillard F, Roberts D, Saber M, et al. 8600 Rockville Pike The retrospective study by Kim et al. Mucoid degeneration of the anterior cruciate ligament (MD-ACL) was first characterized by Kumar et al. Tamer Sweed. -. The appearance can mimic acute or chronic interstitial partial tears of the ACL. Pain was posterior in 23 knees (80%). Lintz F, Pujol N, Dejour D, Boisrenoult P, Beaufils P. Anterior cruciate ligament mucoid degeneration: selecting the best treatment option. Privacy 2011. el Kadi KI, Marcaillou F, Blanc S, Salloum B, Dimontagliari C, Boutayeb F. Pan Afr Med J. PMC report that one patient had ACL reconstruction simultaneously after the ACL debridement. The site is secure. This study was registered on PROSPERO [10], an international prospective register of systematic reviews (CRD42018087782). Disclaimer. The patient presented with extension block of the knee. This systematic review has some limitations. Management of mucoid degeneration of the anterior cruciate ligament: a systematic review. The prevalence of MDACL on magnetic resonance imaging (MRI) ranges from 1.8 to 5.3% [4, 5]. Treatment for MDACL usually starts non-surgically with anti-inflammatory drugs and physiotherapy. Reduction plasty for hypertrophic anterior cruciate ligament mucoid degeneration: clinical and knee laxity outcomes in 23 cases. Provided by the Springer Nature SharedIt content-sharing initiative. Eight studies showed postoperative improvement in range of motion, whereas Khanna et al. AJR Am J Roentgenol. https://doi.org/10.1007/s002560100336, Narvekar A, Gajjar S (2004) Mucoid degeneration of the anterior cruciate ligament. http://www.crd.york.ac.uk/PROSPERO/display_record.php?ID=CRD42018087782. Arthroscopy 20(2):141146. Manage cookies/Do not sell my data we use in the preference centre. The mean follow up ranged from 13 to 72months. Anterior knee pain is the more common complaint. Anterior cruciate ligament ganglia and mucoid degeneration: coexistence and clinical correlation. The pathogenesis remains controversial. -, Bergin D, Morrison WB, Carrino JA, Nallamshetty SN, Bartolozzi AR. J Clin Epidemiol 62(10):10061012. The aim of this study was to detail the clinical, radiological, arthroscopic, and pathological findings of mucoid degeneration of the anterior cruciate ligament and report the clinical outcomes following arthroscopic treatment. The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). -. 2011 Aug 1;19(8):1326-33. Hsu CJ, Wang SC, Fong YC, Huang CY, Chiang IP, Hsu HC. 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). Recent studies have reported that the prevalence of ACL mucoid degeneration is approximately 2-14% [20, 23, 24, 25]. Clipboard, Search History, and several other advanced features are temporarily unavailable. 8600 Rockville Pike There is no consensus on treatment and evidence is scarce. Arthroscopic debridement of the mucoid degeneration of the ACL was safe and effective in the patient. 2021 Aug 21;33(1):26. doi: 10.1186/s43019-021-00110-6. 1. just over two decades ago [], the interest in this condition has quickly gathered pace in the orthopaedic community.Little is known about this condition that affects 1.8-5.3% of the population as per magnetic resonance imaging (MRI) diagnosis [2, 3]. Quadriceps and hamstring weakness are common features of people with symptomatic degenerative meniscal tears Surgery may address the structural injury, but . official website and that any information you provide is encrypted ACL debridement was partial in all studies except for those by Lintz et al. 2001;17(9):E37. Skeletal Radiol. to 44% in the study of Cha et al. Physiopedia articles are best used to find the original sources of information (see the references list at the bottom of the article). mucoid degeneration acl symptoms. They reported that a biopsy indicated mucoid degeneration and a relief of symptoms could be obtained through arthroscopic partial resection of the ligament. Postoperative ACL laxity is common after arthroscopic ACL debridement, however, symptomatic instability is not. Imaging: Plain radiographs -Provided skilled hands on in post-op rehabilitation to various population including Head and neck cancers, Lymph edema management, Bone cancers. J Chin Med Assoc. Read more, Physiopedia 2023 | Physiopedia is a registered charity in the UK, no. Mucoid degeneration of the anterior cruciate ligament is a rare pathological entity. Bergin et al. JBR-BTR. This study hypothesized that arthroscopic debridement of MDACL would provide patients with improvement in pain, range of movement and functional outcome scores. -, Hensen JJ, Coerkamp EG, Bloem JL, De Schepper AM. Bergin D, Morrison WB, Carrino JA, Nallamshetty SN, Bartolozzi AR. Anatomopathology samples were collected in 18 cases. Chudasama CH, Chudasama VC, Prabhakar MM. Patient having mucoid degeneration of ACL seeks multiple orthopedic consultation and most of the time treating orthopedican miss its diagnosis either because of lack of experience or rare cause of pain unless doctor sought magnetic resonance imaging (MRI) of knee. FOIA Knee Surg Sports Traumatol Arthrosc 19(8):13261333. what causes mucoid degeneration of acl. HHS Vulnerability Disclosure, Help Multiple theories have been put forth that explains the pathological disorganization in the collagen fibers of the Anterior Cruciate Ligament, such as synovial, traumatic, and degenerative, "Synovial theory- states that there is accumulation of synovial fluid inside the substance of ACL in a herniated pouch of synovium. Instrumental treatment. Diet therapy and various other treatments (general aspects) Discipline Radiotherapy. 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/. Complete resection of the ACL without ACL reconstruction is a reliable treatment for symptomatic cases of mucoid degenerated ACL. If arthroscopy is performed, the ligament may appear entirely normal, especially using the standard anterior portal approach. Mucoid cystic degeneration of the cruciate ligament. 2022 Mar;14(1):76-89. doi: 10.4055/cios20163. Disclaimer. The origin of MDACL may be degenerative or traumatic. 1. 2020 Jun 2. el Kadi KI, Marcaillou F, Blanc S, Salloum B, Dimontagliari C, Boutayeb F. Mucoid degeneration of the anterior cruciate ligament: a case report. Arthroscopy. The origin of MDACL may be degenerative or traumatic. Accessibility Unable to load your collection due to an error, Unable to load your delegates due to an error. J Chin Med Assoc. ACL mucoid degeneration is an uncommon pathological condition; the pathogenesis, prevalence, and . Skelet Radiol 30(6):312315. 3. Management of mucoid degeneration of the anterior cruciate ligament: a systematic review. 2011. We report a case of mucoid degeneration of the anterior cruciate ligament (ACL). Magnetic Resonance Imaging is the most useful tool for differentiating mucoid degeneration of the ACL from an intraligamentous ganglion or other lesions in the knee joint and if this disease is considered preoperatively, it can be diagnosed easily based on characteristic findings. No treatment is usually required. official website and that any information you provide is encrypted In most cases Physiopedia articles are a secondary source and so should not be used as references. 2011. Kumar A, Bickerstaff DR, Grimwood JS, Suvarna SK (1999) Mucoid cystic degeneration of the cruciate ligament. Arthroscopic diagnostic criteria [7] are (1) continuous ACL fibres, (2) increased ACL volume, (3) yellowish-coloured material expressed on palpation and (4) loss of ACL synovial lining. PubMed The authors declare that they have no competing interests. Surgical treatment involves arthroscopic debridement of ACL, with partial or total resection, occasionally combined with ACL reconstruction. Mucoid degeneration is characterized by an increase in the mucoid ground substance in the connective tissue containing glycoprotein and mucoprotein [ 4 ]. What is Anterior Cruciate Ligament Mucoid Degeneration? Cite this article. It is a chronic degenerative change of a bulky ACL that may lead to notch . Signal intensity of the anteromedial bundle (AMB) or posterolateral bundle (PLB) graft standardized to the intensity of the PCL was defined as signal intensity ratio (SIR). J Arthrosc Joint Surg 3(1):2833. Epub 2018 Jun 13. 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. J Bone Joint Surg Br. AJR Am J Roentgenol. Disclaimer. The anterior cruciate ligament (ACL) is the most commonly injured of the major knee ligaments. Twenty-eight knees (97%) showed soft and/or delayed stops on postoperative Lachman testing. The aetiology of MDACL is not fully understood, hence, there are multiple theories on this. Mucoid degeneration of A C L is more common and literature has also reported many cases, but for PCL only few cases have been reported in English literature. sharing sensitive information, make sure youre on a federal They respond well to a judicious arthroscopic release of the ACL with notchplasty. eCollection 2022 May-Jun. sharing sensitive information, make sure youre on a federal Results: Anterior Cruciate Ligament (ACL) Mucoid Degeneration Anatomy Anterior Cruciate Ligament, is an important structure of the knee joint. Knee Surg Sports Traumatol Arthrosc. Postoperative pain relief was reported in seven studies. 2. Chudasama et al. Terms and Conditions, It is lined by the synovial fluid, which provides the nutrition and plays an integral part in healing. Anterior cruciate ligament ganglia and mucoid degeneration: coexistence and clinical correlation. Other theories include Degenerative theory- MD could occur due to ageing.[3]. Unauthorized use of these marks is strictly prohibited. as very low (04 points), low (58 points), good (912 points) or excellent (1316 points) [12]. Characteristic: "celery stalk" appearance. 2008;24(6):642649. On physical exam, the Lachman test for ACL instability is negative with an ACL ganglion. Eight patients (72.7%, n=8) reported an improvement of knee instability, while three patients (27.3%, n=3) experienced an unchanged knee stability. Introduction: Check for errors and try again. These appearances must be differentiated from mucoid degeneration of the intact ACL. Mucoid degeneration (MD) of the anterior cruciate ligament (ACL) is a well-recognized pathology characterized by the degradation of collagen fibers and infiltration of a mucoidlike substance, [1,2 . Orthopaedics & Traumatology: Surgery & Research. Therefore, Anterior Cruciate Ligament tear is more susceptible during any injury to the knee. See this image and copyright information in PMC. Knee Surgery, Sports Traumatology, Arthroscopy. 1. 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. 2022 Nov 24. doi: 10.1007/s00402-022-04659-z. Introduction: Mucoid degeneration of the anterior cruciate ligament (ACL) is a little-known entity. The success of treatment for MDACL and the subsequent risk of instability is not known. 2011 Aug;19(8):1326-33. doi: 10.1007/s00167-011-1433-0. 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. in 1999 [1]. The .gov means its official. Post-debridement arthroscopic view showing yellowish, Post-debridement arthroscopic view showing yellowish lesion of the anterior cruciate ligament which was, MeSH 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. PROSPERO. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. Sweed T, Mussa M, El-Bakoury A, Geutjens G, Metcalfe A. Knee Surg Relat Res. Unauthorized use of these marks is strictly prohibited. MEDLINE, Embase, Google Scholar, Cochrane, ISI web of science and Scopus were comprehensively searched from the earliest year of indexing until 10 July 2020. Federal government websites often end in .gov or .mil. 2022 Jun 2;20(1):225-228. doi: 10.33314/jnhrc.v20i01.4182. 2018 Jun;25(3):445-452. doi: 10.1016/j.knee.2018.02.012. [16]. The ACL appears on MRI to be enlarged with cystic changes throughout, however it is intact. Possible etiologies include: It is postulated that mucoid degeneration may be a predisposing factor in the formation of ACL ganglion cysts. Bethesda, MD 20894, Web Policies 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. Glossary of terms for musculoskeletal radiology. Mucoid degeneration (MD) of the anterior cruciate ligament (ACL) is a rare pathological entity with disputed theories of origin. The site is secure. Sasaki R, Nagashima M, Takeshima K, Otani T, Okada Y, Aida S, Ishii K. J Int Med Res. Anterior cruciate ligament mucoid degeneration: selecting the best treatment option. Postoperative Lachman test was positive in 40% of patients, and 6% of patients had symptomatic instability. Ahuja A, Parekh C, Salomon A, Lawande M, Daftary A. Skeletal Radiol. 2011;19(3):408411. No reconstruction was performed at the same time. Arch Orthop Trauma Surg. #radiologycpd #medicalimaging #imaging #radcme #rheumatology #arthritis #rheumatologist #orthopaedic #painphysician #physiotherapy #sportsmed #orthopaedic #mskmri. Federal government websites often end in .gov or .mil. All patients with a preoperative limited ROM (100%, n=9) reported a return to a normal (subjective) ROM. https://doi.org/10.1007/s00167-012-1991-9, McIntyre J, Moelleken S, Tirman P (2001) Mucoid degeneration of the anterior cruciate ligament mistaken for ligamentous tears. Hamdaoui and others published Le signe de la branche de cleri | Find, read and cite all the research you need on ResearchGate None of the studies was a randomised controlled trial and none had a control group. California Privacy Statement, HHS Vulnerability Disclosure, Help Arthroscopic treatment may include ACL resection, which raises the questions about the harmlessness of this procedure and the risk of anterior instability. Demographic, radiological, and histological findings, type of surgery, and clinical pre- and postoperative data were analyzed. Outcome of Arthroscopic Treatment of Mucoid Degeneration of the Anterior Cruciate Ligament. Online ahead of print. 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. and transmitted securely. Most authors believe that partial ACL resection is the treatment of choice in symptomatic MD of the ACL. Anterior cruciate ligament reconstruction was required in only one young patient due to disabling instability. Indian J Orthop 48(2):197202. An official website of the United States government. Epub 2018 Apr 21. Tissue biopsy was performed in 85% of patients (58 of 68) in the study of Cha et al. Anterior cruciate ligament; Arthroscopy; Knee; Mucoid degeneration. Mumbai, Maharashtra, India. This makes it difficult to relate the improvement of symptoms to ACL debridement. Palmer W, Bancroft L, Bonar F, Choi JA, Cotten A, Griffith JF, Robinson P, Pfirrmann CW. Any discrepancy was resolved by the senior author. Post-debridement arthroscopic view showing yellowish lesion of the anterior cruciate ligament which was debrided. Treatment of ACL mucoid degeneration by arthroscopic resection is effective for posterior pain and flexion limitation. The appearance can mimic acute or chronic interstitial partial tears of the ACL. 2010 Jun 1;96(4):400-6. In these studies, the total number of patients with a postoperative positive Lachman test was 40% (77 of 194 patients). The aetiology of MDACL is not fully understood, hence, there are multiple theories on this. The need for delayed ACL reconstruction should be discussed preoperatively, especially if complete resection of the ACL is to be performed. We herein describe a case of PCL mucoid degeneration presented with secondary ACL . and transmitted securely. Histological diagnosis was established by tissue biopsy in all patients in five studies, with a total of 87 knees. 2022 Nov 24. doi: 10.1007/s00402-022-04659-z. 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. The clinical presentation is one of posterior pain with limited flexion. Arthroscopic debridement of the ACL resulted in good pain relief and improved range of movement in all studies, with postoperative improvement in the knee scores. Generally, we know little about this condition.