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Synovial cyst that compressed the peroneal nerve: case report
Vadim Anatolyevich Byvaltsev1, Evgeniy G Belykh, Polina J Baradieva
1State Establishment Scientific Center of Reconstructive and Restorative Surgery, Siberian Branch, Russian Academy of Medical Sciences, Irkutsk, Russia. byval75vadim@yandex.ru
Acta Neurochirurgica
|December 17, 2009
Summary
A synovial cyst caused peroneal nerve compression, leading to foot drop. Microsurgical excision restored foot extensor function, though some numbness persisted.
Area of Science:
- Neurology
- Orthopedics
- Surgical Pathology
Background:
- Synovial cysts are rare, benign cystic structures that can arise from joints or tendon sheaths.
- Nerve compression by soft tissue masses, including synovial cysts, can lead to significant neurological deficits.
- Peroneal nerve compression typically presents with foot drop and sensory disturbances.
Observation:
- A patient presented with acute foot drop, heel instability, and sensory loss in the right leg and foot.
- Clinical examination and electroneuromyography confirmed peroneal nerve compression by a soft, elastic mass.
- The mass was identified as a synovial cyst adherent to the peroneal nerve.
Findings:
- Total microsurgical excision of the synovial cyst was performed.
- Postoperatively, motor function in the right foot extensors was restored.
- The patient regained the ability to bear weight on his heel within seven days, with residual hypoesthesia.
Implications:
- This case highlights synovial cysts as a treatable cause of peroneal nerve compression.
- Microsurgical excision is an effective treatment for symptomatic synovial cysts causing nerve entrapment.
- Early diagnosis and surgical intervention can lead to significant functional recovery in peroneal nerve compression syndromes.