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Discoid meniscus

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https://www.readbyqxmd.com/read/27899354/collagenous-ultrastructure-of-the-discoid-meniscus-a-transmission-electron-microscopy-study
#1
Young-Hee Choi, Young-Jin Seo, Jong Mun Ha, Koo Hyun Jung, Jeehyoung Kim, Si Young Song
BACKGROUND: The collagen ultrastructure of the discoid lateral meniscus (DLM) has not been precisely defined. PURPOSE: To investigate the ultrastructure of the DLM, focusing on its collagen fibers, and to compare the collagen net architecture between intact and torn DLMs using the Collagen Meniscal Architecture (CMA) scoring system. STUDY DESIGN: Descriptive laboratory study. METHODS: Thirty specimens were taken from 30 patients with a diagnosis of a complete DLM using a 1-piece technique...
November 29, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27894171/diagnosis-and-treatment-of-discoid-meniscus
#2
REVIEW
Jae-Gyoon Kim, Seung-Woo Han, Dae-Hee Lee
There is a greater incidence of discoid meniscus in Asian countries than in Western countries, and bilateral discoid menisci are also common. The discoid meniscus may be a congenital anomaly, and genetics or family history may play a role in the development of discoid menisci. Because the histology of discoid meniscus is different from that of normal meniscus, it is prone to tearing. Individuals with a discoid meniscus can be asymptomatic or symptomatic. Asymptomatic discoid menisci do not require treatment...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27833770/double-layered-lateral-meniscus-in-an-8-year-old-child-report-of-a-rare-case
#3
Susumu Araki, Mitsuhiko Kubo, Kosuke Kumagai, Shinji Imai
Reports of congenital abnormalities of the lateral meniscus include discoid meniscus, accessory meniscus, double-layered meniscus, and ring-shaped meniscus. Particularly, only a few cases of double-layered meniscus have been reported. We report a case of double-layered lateral meniscus, in which an additional semicircular meniscus was observed under the normal lateral meniscus. The accessory hemimeniscus was resected by means of arthroscopic surgery. This case demonstrates an interesting and extremely rare anatomical abnormality of the lateral meniscus...
2016: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/27752751/the-utility-of-the-radiographic-condylar-cut-off-sign-in-children-and-adolescents-with-complete-discoid-lateral-meniscus
#4
Chul-Won Ha, Jae Won Jang, Manyoung Kim, Sang-Eun Na, Han-Jun Lee, Yong-Beom Park
PURPOSE: The purpose of this study was to determine the utility of the radiographic 'condylar cut-off sign' to detect the presence of a complete discoid lateral meniscus in children and adolescents. METHODS: The radiographs of 166 subjects younger than 17 with complete discoid lateral meniscus as well as 153 age- and sex-matched subjects with normal meniscus were reviewed. The condylar cut-off sign, judged by the prominence ratio of the medial and lateral femoral condyles in tunnel view radiographs, was assessed...
October 17, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27751607/meniscal-allograft-transplantation-for-symptomatic-knee-after-meniscectomy-of-torn-discoid-medial-meniscus-report-of-three-cases
#5
Sung Il Wang
In symptomatic discoid medial meniscus, partial meniscectomy is the principal treatment method and can yield promising short-term results. However, unlike the nondiscoid meniscus, discoid medial meniscus is frequently associated with horizontal cleavage tears, attributable to the presence of myxoid degeneration in the intrameniscal substance, in that it may potentially occur deteriorating long-term results because of re-tearing of remaining meniscus or secondary degeneration of cartilage of the medial compartment after meniscectomy...
October 14, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27695981/arthroscopic-treatment-of-symptomatic-discoid-meniscus-in-children
#6
Tetsuo Hagino, Satoshi Ochiai, Shinya Senga, Takashi Yamashita, Masanori Wako, Takashi Ando, Hirotaka Haro
PURPOSE: To study discoid meniscus in children who underwent arthroscopic surgery at our center. SUBJECTS AND METHODS: Thirty-four patients (39 knees) younger than 15 years with discoid lateral meniscus (mean age, 12.9 years; 13 males, 21 females) who underwent arthroscopic surgeries since 2007 were studied. The surgical procedure consisted of, in principle, saucerization with additional suture repair in the case of meniscal instability at the peripheral rim of the residual meniscus...
October 1, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27651201/combined-outside-in-and-fast-fix-sutures-for-the-treatment-of-serious-discoid-meniscal-tears-a-midterm-follow-up-study
#7
Yuezheng Hu, Xinxian Xu, Xiaoyun Pan, Huachen Yu, Yu Zhang, Hong Wen
BACKGROUND: The treatment of discoid meniscus is debatable. This study aimed to assess the clinical efficacy of combined outside-in and FasT-Fix sutures for the treatment of serious discoid meniscal tears. METHODS: This study included 32 consecutive patients who underwent arthroscopic meniscal plasty for serious discoid meniscal tears (full-thickness vertical, longitudinal tears >10mm) between October 2006 and June 2012. A combination of outside-in and FasT-Fix sutures was used to treat serious discoid meniscal tears...
December 2016: Knee
https://www.readbyqxmd.com/read/27494952/symptomatic-discoid-lateral-meniscus-a-clinical-and-arthroscopic-study-in-a-chinese-population
#8
Gang Chen, Zhong Zhang, Jian Li
BACKGROUND: Discoid lateral meniscus (DLM) is relatively common in East Asia..Symptomatic discoid lateral meniscus (SDLM) is an important indication for knee arthroscopic surgery. However, studies investigating SDLM are rare. The purpose of this study was to evaluate the clinical characteristics and intra-articular variants of SDLM in a Chinese population. METHODS: We retrospectively reviewed all patients with SDLM from January 2005 to December 2014 in our hospital...
2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27385203/-ligamentous-knee-injuries-in-children-and-adolescents
#9
T C Drenck, R Akoto, N M Meenen, M Heitmann, A Preiss, K- H Frosch
Due to an increase in sporting activities, the number of injuries of the immature knee is continuously increasing. These injuries necessitate a special approach regarding the particular anatomical situation with open growth plates. Three of the most commonly occurring injuries are rupture of the anterior cruciate ligament, patella dislocation and meniscus injuries. The clinical results for conservative treatment of ruptures of the anterior cruciate ligament in the growth phase are inferior to operative treatment...
July 2016: Der Unfallchirurg
https://www.readbyqxmd.com/read/27276636/arthroscopic-treatment-of-discoid-lateral-meniscus-tears-in-children-with-achondroplasia
#10
Alfred Atanda, Maegen Wallace, Michael B Bober, William Mackenzie
BACKGROUND: Achondroplasia is the most common form of skeletal dysplasia that presents to the pediatric orthopaedist. More than half of achondroplasia patients are affected with knee pain. It is thought that the majority of this pain may be due to spinal stenosis, hip pathology, or knee malalignment. Discoid menisci can be a source of lateral knee joint pain in skeletally immature patients in general. We present the first case series of patients with achondroplasia who had symptomatic discoid lateral menisci treated with arthroscopic knee surgery...
July 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/27274475/simultaneous-osteoperiosteal-autologous-iliac-crest-graft-and-lateral-meniscus-allograft-transplantation-for-osteochondral-lesion-with-bony-defect-and-lateral-discoid-meniscus-tear
#11
Dhong Won Lee, Jin Goo Kim, Jeong Ku Ha, Woo Jong Kim
The optimal treatment for combined osteochondritis dissecans (OCD) with considerable bony defect of the lateral femoral condyle (LFC) and torn discoid lateral meniscus is unclear. We present a case of a 15-year-old female who was a gymnast and had a large OCD lesion in the LFC combined with deficiency of the lateral meniscus. The patient underwent the "one-step" technique of osteoperiosteal autologous iliac crest graft and lateral meniscus allograft transplantation after a failure of meniscectomy with repair at another hospital...
June 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27270137/cost-effectiveness-of-meniscal-allograft-for-torn-discoid-lateral-meniscus-in-young-women
#12
Austin J Ramme, Eric J Strauss, Laith Jazrawi, Heather T Gold
OBJECTIVE: A discoid meniscus is more prone to tears than a normal meniscus. Patients with a torn discoid lateral meniscus are at increased risk for early onset osteoarthritis requiring total knee arthroplasty (TKA). Optimal management for this condition is controversial given the up-front cost difference between the two treatment options: the more expensive meniscal allograft transplantation compared with standard partial meniscectomy. We hypothesize that meniscal allograft transplantation following excision of a torn discoid lateral meniscus is more cost-effective compared with partial meniscectomy alone because allografts will extend the time to TKA...
September 2016: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/27267748/histological-and-biological-comparisons-between-complete-and-incomplete-discoid-lateral-meniscus
#13
Hiroto Inoue, Takayuki Furumatsu, Ami Maehara, Takaaki Tanaka, Toshifumi Ozaki
The discoid lateral meniscus (DLM) is an anatomically abnormal meniscus that covers a greater area of the tibial plateau than the normal meniscus. The DLM is classified into two types: complete (CDLM) and incomplete (ICDLM) types. In this study, we investigated the histological and cell biological characteristics of CDLM and ICDLM. The number of blood vessels, proteoglycan deposition, and collagen distribution were assessed using meniscal tissues. Collagen production was also investigated in CDLM and ICDLM cells...
September 2016: Connective Tissue Research
https://www.readbyqxmd.com/read/27265251/magnetic-resonance-imaging-findings-in-symptomatic-patients-after-arthroscopic-partial-meniscectomy-for-torn-discoid-lateral-meniscus
#14
Chang-Rack Lee, Seong-Il Bin, Jong-Min Kim, Nam-Ki Kim
PURPOSE: To evaluate the change in the thickness and width of the residual meniscus using magnetic resonance imaging (MRI) in patients who underwent arthroscopic partial meniscectomy for discoid lateral meniscus (DLM), to assess whether the degeneration of the articular cartilage in the lateral compartment of the knee progressed, and to evaluate clinical results. METHODS: Among the patients who underwent arthroscopic partial meniscectomy for DLM between January 1997 and December 2011, those who were aged 40 or below at surgery were followed up for at least 3 years, and received at least 2 follow-up MRIs that were retrospectively reviewed...
June 3, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27177640/comparison-of-the-insertion-of-the-posterior-horn-of-the-lateral-meniscus-discoid-versus-non-discoid
#15
Nam-Hong Choi, Bong-Seok Yang, Sang-Young Lee, Chae-Chul Lee, Chang-Yk Lee, Brian N Victoroff
PURPOSE: The purpose of this study was to compare the insertion sites of the posterior horn between discoid and non-discoid lateral meniscus using magnetic resonance imaging (MRI). METHODS: Two hundred and twenty-seven patients who had MRI scans before surgery and underwent arthroscopy were enroled in this study. A coronal view showing the narrowest width of the midbody of the lateral meniscus was chosen to measure the widths of the entire tibial plateau and the midbody of the lateral meniscus...
May 13, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27141781/-discoid-medial-meniscus-of-double-knees-a-case-report-and-literature-review
#16
REVIEW
Yun Fu, Xiao-nan Zhang, Yang Li, Peng Xiang, Shou-hui Xu
No abstract text is available yet for this article.
February 2016: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/27135452/discoid-meniscus-associated-with-achondroplasia
#17
Daniel G Hoernschemeyer, Alfred Atanda, Ellen Dean-Davis, Sumit K Gupta
Achondroplasia is the most common skeletal dysplasia. This form of dwarfism is caused by a point mutation in the fibroblast growth factor receptor 3 (FGFR3) gene, leading to inhibition of endochondral ossification for these patients. This results in a normal trunk height but shortened limbs. The discoid meniscus may be an important associated finding to better understand the common complaints of leg pain for these patients. Although the incidence for a discoid meniscus is between 3% and 5% for the general population, it is unknown with achondroplasia...
May 1, 2016: Orthopedics
https://www.readbyqxmd.com/read/27132775/two-year-outcomes-after-arthroscopic-lateral-meniscus-centralization
#18
Hideyuki Koga, Takeshi Muneta, Toshifumi Watanabe, Tomoyuki Mochizuki, Masafumi Horie, Tomomasa Nakamura, Koji Otabe, Yusuke Nakagawa, Ichiro Sekiya
PURPOSE: To evaluate clinical and radiographic outcomes of arthroscopic centralization for lateral meniscal extrusion. METHODS: Twenty-one patients who underwent arthroscopic centralization of the lateral meniscus were included. In cases with an extruded lateral meniscus (9 patients) or discoid meniscus (12 patients), the capsule at the margin between the midbody of the lateral meniscus and the capsule was sutured to the lateral edge of the lateral tibial plateau and centralized using suture anchors to reduce or prevent meniscal extrusion...
April 29, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27028045/progression-of-stable-juvenile-osteochondritis-dissecans-after-10-years-of-meniscectomy-of-the-discoid-lateral-meniscus
#19
Masakazu Ishikawa, Nobuo Adachi, Atsuo Nakamae, Masataka Deie, Mitsuo Ochi
Ten years after a meniscectomy of discoid lateral meniscus, a 19-year-old man presented a loose body in his right knee with limited range of motion. At the time of meniscectomy, a stable osteochondritis dissecans in the lateral femoral condyle with a T2 high area in MRI was recognized; however, the lesion was left without surgical treatment. We performed fixation of a fragment and osteochondral grafting. Surgical treatment for stable juvenile osteochondritis dissecans still remains controversial; however, drilling will help to increase the healing potential and to prevent lesion progression, especially after meniscectomy that alters the mechanical stress on immature osteochondral structures...
April 12, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/26980846/the-inverted-discoid-meniscus-segment-clinical-radiographic-and-arthroscopic-description-of-a-hidden-tear-pattern
#20
Lauren LaMont, Henry Ellis, Kelsey Wise, Philip Wilson
BACKGROUND: A flipped, or inverted, meniscus segment is easily visualized in the normal meniscus. However, an inverted discoid meniscus segment may be difficult to appreciate because the tear occurs more centrally and leaves more meniscal rim; thus, it may be undertreated if not addressed during arthroscopy. PURPOSE: To describe findings on clinical history, radiographs, MRI, and arthroscopy of a lateral discoid meniscus with an inverted segment and compare them with characteristics of a lateral discoid meniscus without an inverted segment...
June 2016: American Journal of Sports Medicine
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