01386nas a2200265   4500000000100000008004100001260001300042653001000055653002800065653001100093653001600104653001200120653000900132653001900141653001800160100001500178700001900193700001300212245006900225300001000294490000700304050003200311520076300343022001401106       1983                            d  c1983 Jul10aAdult10aDiagnosis, Differential10aHumans10aHypesthesia10aleprosy10aMale10aPeroneal Nerve10aSynovial Cyst1 aSengupta P1 aRaychowdhuri D1 aHaldar B00aFoot drop, mimicking neuritic leprosy induced by a Baker's cyst.  a480-20 v55  aInfolep Library - available3 a<p>A Baker's cyst of the left knee joint induced foot drop insidiously in a male, Hindu, aged 25 years. On clinical suspicion, that this malady was caused by neuritic type of leprosy, he was administered antileprosy drugs for 6 months without any benefit. On exploration a globular cystic mass, containing gelatinous fluid, was seen to be pressing over the left lateral popliteal nerve. Following removal of this mass, which on histology confirmed to be a Baker's cyst, foot drop and associated motor power impairment disappeared. This case thus highlights the importance of an early exploration and histological diagnosis of a suspected case of neuritic leprosy inducing foot drop and progressively deteriorating, inspite of regular antileprosy therapy.</p>  a0024-1024