A symptomatic cyamella in the popliteus tendon causing snapping knee: a case report and literature review

Cyamella,the sesamoid bones of the popliteus muscle, are rare in humans. Snapping knee is an uncommon problem which can be difficult to diagnose. In this case, we report a 24-year-old male with snapping knee caused by symptomatic cyamella in the popliteus tendon. A large cyamella was identified upon...

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Bibliographic Details
Published in:BMC musculoskeletal disorders 2019-10, Vol.20 (1), p.495-495, Article 495
Main Authors: Su, Shouwen, Lu, Yunxiang, Chen, Yuxian, Li, Zhiyong
Format: Article
Language:English
Subjects:
Care and treatment
Case Report
Cyamella
Diagnosis
Diagnosis, Differential
Humans
Joint Diseases - diagnosis
Joint Diseases - etiology
Joint Diseases - surgery
Knee injuries
Knee joint
Knee Joint - abnormalities
Knee Joint - diagnostic imaging
Leg muscles
Magnetic Resonance Imaging
Male
Orthopedic Procedures - methods
Popliteus
Sesamoid
Sesamoid Bones - diagnostic imaging
Snapping knee
Surgery
Tendons - abnormalities
Tendons - diagnostic imaging
Treatment Outcome
Young Adult
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Summary:Cyamella,the sesamoid bones of the popliteus muscle, are rare in humans. Snapping knee is an uncommon problem which can be difficult to diagnose. In this case, we report a 24-year-old male with snapping knee caused by symptomatic cyamella in the popliteus tendon. A large cyamella was identified upon surgery and was removed. Postoperatively, the patient had immediate relief of preoperative symptoms, and there were no signs of recurrence after 1 years of follow-up. Although not previously suggested, symptomatic cyamella in the popliteus tendon should be considered as part of the differential diagnosis of the snapping knee.
ISSN:1471-2474
1471-2474
DOI:10.1186/s12891-019-2882-8