title: Combined femoral and obturator neuropathy caused by synovial cyst of the hip.
abstract: A 57-year-old man with a history of severe degenerative lumbar spine disease presented with painful proximal weakness of the right leg. Clinical examination suggested a femoral and obturator neuropathy with a palpable mass in the right groin. Magnetic resonance (MR) imaging disclosed a large synovial cyst of the underlying hip joint in the extrapelvic part of the iliopsoas and external obturator muscles, with femoral and obturator nerve compression. This case highlights the importance of detailed clinical examination in patients with multiple joint disease, the need for considering space-occupying cysts of degenerated joints as a potential cause of nerve damage in unusual locations, and the value of multiplanar MR imaging for proper diagnosis in such situations. Muscle Nerve, 2005.
authors.affiliation: Department of Neurology, University Hospital of Bern, Inselspital, Freiburgstrasse 30, CH-3010 Bern, Switzerland.
authors.forename: Moritz
authors.initials: M
authors.lastname: Stuplich
authors.forename: Andreas F
authors.initials: AF
authors.lastname: Hottinger
authors.forename: Christoforos
authors.initials: C
authors.lastname: Stoupis
authors.forename: Mathias
authors.initials: M
authors.lastname: Sturzenegger
mesh_terms: D003251:Constriction, Pathologic; D004576:Electromyography; D020428:Femoral Neuropathy / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D005500:Follow-Up Studies; D006621:Hip Joint; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000294:innervation / Q000503:physiopathology; D009776:Obturator Nerve; D010523:Peripheral Nervous System Diseases / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D013581:Synovial Cyst / Q000150:complications* / Q000175:diagnosis / Q000601:surgery