Discoid Meniscus

Atay, Özgür Ahmet; Pekmezci, Murat; Doral, Mahmut Nedim; Sargon, Mustafa F.; Ayvaz, Mehmet; Johnson, Darren L.

doi:10.1177/0363546506294678

Cited by 119 publications

(57 citation statements)

References 12 publications

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“…The histology and ultrastructure of discoid meniscus is different from that of normal meniscus. The discoid meniscus is characterized by decreased collagen fibers and loss of normal collagen orientation, and intrameniscal mucoid degeneration is also common9,22). Papadopoulos et al23) documented significant disorganization of the circular collagen network and a heterogeneous course of the circumferentially arranged collagen fibers in discoid meniscus structure.…”

Section: Embryology and Anatomymentioning

confidence: 99%

Diagnosis and Treatment of Discoid Meniscus

Kim

Han

Lee

2016

Knee Surg Relat Res

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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. However, operative treatment is necessary if there are symptoms. Total meniscectomy leads to an increased risk of osteoarthritis. Therefore, total meniscectomy is generally reserved for rare unsalvageable cases. Partial meniscectomy (saucerization) with preservation of a stable peripheral rim combined with or without peripheral repair is effective, and good short-, mid-, and long-term clinical results have been reported.

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Section: Embryology and Anatomymentioning

confidence: 99%

Diagnosis and Treatment of Discoid Meniscus

Kim

Han

Lee

2016

Knee Surg Relat Res

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“…Microscopic tissue examinations through human embryos knee joint revealed the meniscus and cruciate ligament develops directly from an intermediate mesodermal blastoma, which has the shape of a thick plate in the early embryonic period. 12 15 16 According to this present case, medial meniscus and anterior cruciate ligament may be differentiated from same embryonic tissue and it may provide evidence of congenital developmental assumption of discoid meniscus. Our patient had a history of pain with extension block in accordance with standard surgical treatment indicated in symptomatic patients with persistent pain or recurrent locking or catching like mechanical block.…”

Section: Discussionmentioning

confidence: 52%

“… 11 Atay et al . 12 in their study have reported that decreased amount of collagen fibers with heterogenous configuration under the electron microscopic findings may be the causative factor of vulnerability of the discoid meniscus. Others may include relatively weak attachments to the joint capsule of the posterior horn, insufficient vascular supply and thickness of discoid shape.…”

Section: Discussionmentioning

confidence: 89%

Arthroscopic one-piece reshaping for symptomatic discoid medial meniscus with anomalous amalgamating into anterior cruciate ligament

Choi

2015

IJOO

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Discoid shapes of lateral menisci are relatively common finding, whereas discoid medial menisci are less common. Discoid medial meniscus with associated anomalous variants has been reported. However, symptomatic complex tear of complete type discoid medial meniscus with anomalous blending with anterior cruciate ligament is an extremely rare pathology. A 35-year-old male was admitted to our hospital with left knee pain and loss of terminal extension for 2 years. On physical examination, the patient presented with clicking and restriction during the extension motion of the knee joint. Magnetic resonance imaging and arthroscopy indicated complex tear of complete discoid medial meniscus in association with anomalous connection between entire apical portion of discoid medial meniscus and tibial insertion portion of the anterior cruciate ligament. We obtained a successful outcome with arthroscopic resection and shaping in one-piece method using no. 11 scalpel blade.

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“…Unlike normal menisci, discoid menisci cannot control the coordination of the tibiofemoral joint, absorb shock, or reduce the mechanical pressure on articular cartilage, thus they quickly become worn and are torn easily, particularly when injured (14). Atay et al (15) revealed that the ultrastructure of discoid lateral menisci significantly differs from that of normal menisci. The collagen fibrils in discoid menisci are decreased in number and misaligned, both of which contribute to an increased incidence of tears.…”

Section: Discussionmentioning

confidence: 99%

Short-term clinical outcomes of 42 cases of arthroscopic meniscectomy for discoid lateral meniscus tears

Cao

Zhang

Qian

et al. 2012

Experimental and Therapeutic Medicine

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Discoid lateral meniscus of the knee causes a high morbidity in China. Since the traditional treatment to open the capsule and resect the meniscus often results in arthritis, it is now believed that a discoid lateral meniscus should be treated with arthroscopy to preserve part of the meniscus. The current study aimed to investigate the short-term clinical outcomes of arthroscopic meniscectomy for the treatment of discoid lateral meniscus tears. In the present study, we diagnosed and treated 42 patients (47 knees) with discoid lateral meniscus tears using arthroscopy between February, 2007 and December, 2010. Thirty-seven knees received partial resection of the discoid meniscus, 8 received hypo-complete resection and 2 received complete resection. Thirty-nine of the patients were followed up for a mean of 21 months (ranging from 9 to 53 months). The Lysholm scoring system was used to assess the knee function prior to surgery and during the follow-up. The results were analyzed using a Student’s t-test with SPSS 12.0. Our study showed that patients with treated knees returned to normal activities within 4–6 weeks, and knee functions were more improved at 9 months after operation than 3 months, as measured by the Lysholm score (P<0.05). Arthroscopic meniscectomy is an effective treatment for discoid menisci resulting in minimal invasion, quick recovery and early functional exercise. The use of arthroscopy during surgery aids to preserve the meniscus and to reduce stress, therefore, having a beneficial effect on short-term clinical outcomes.

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Discoid Meniscus

Abstract: This difference may contribute to the vulnerability of the discoid meniscus to tears.

Cited by 119 publications

References 12 publications

Diagnosis and Treatment of Discoid Meniscus

Diagnosis and Treatment of Discoid Meniscus

Arthroscopic one-piece reshaping for symptomatic discoid medial meniscus with anomalous amalgamating into anterior cruciate ligament

Short-term clinical outcomes of 42 cases of arthroscopic meniscectomy for discoid lateral meniscus tears

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