Flail leg syndrome misdiagnosed as inflammatory myopathy a case report

Objective: To investigate the development and clinical characteristics of flail leg syndrome (FLS) improve clinicians’ recognition ability disease. \quad Method：We reviewed data, electromyography, cerebrospinal fluid test, lumbar MRI a patient diagnosed with syndrome(FLS) in seventh Affiliated Hospital Sun Yat-sen University. Results: Clinical symptoms limited both lower limbs, including asymmetric distal muscle weakness atrophy conceal onset slow development. There were also occurrences increased tendon reflexes soreness as disease progressing. Electromyography showed that amplitude motor nerve conduction limbs decreased even disappeared，indicating neurogenic injury.In addition, patient’s blood creatine kinase level was found slightly increased. Conclusion: Flail is variant type ALS. It relatively rare practice usually shows progress. This case study would be helpful for clinicians to diagnostic FLS.