The effects of onabotulinum toxin A injection into rectus femoris muscle in hemiplegic stroke patients with stiff-knee gait: a placebo-controlled, nonrandomized trial.
Tok F, Balaban B, Yaşar E, Alaca R, Tan AK.
Am J Phys Med Rehabil. 2012 Apr;91(4):321-6. doi: 10.1097/PHM.0b013e3182465feb.
PMID:22311056
Relevance of botulinum toxin injection and nerve block of rectus femoris to kinematic and functional parameters of stiff knee gait in hemiplegic adults.