The effectiveness of a Botulinum Toxin A infiltration in the management of bicipital cramps after arthroscopic biceps tenotomy

Abstract

A challenging complication of arthroscopic biceps surgery is the persistent painful cramping of the biceps. There is a paucity of data upon nonsurgical treatment of this debilitating complication. We pro- pose an intramuscular injection of botulinum toxin A (BTX-A) for painful bicipital cramping after tenotomy of the long head of the biceps brachii tendon (LHBT). Ten patients with a painful Popeye sign after tenotomy of LHBT, were treated with intramuscular injection of 100 IU of BTX-A. Mean patient age was 56 years and mean time from surgery to infiltration was 317 days. The Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) score was obtained. Pain was objectified by a visual analogue scale (VAS). Patient satisfaction was described as excellent, good, satisfactory, or poor, three and six months after injection. Mean VAS prior to infiltration was 6.8 and decreased significantly to 2.6 at follow-up. Mean QuickDash was 54.04 prior to infiltration and decreased to 19.84 at follow-up. Patient satisfaction was excellent in 9 and good in 1 patient. We report a significant pain reduction and functional improvement following BTX-A infiltration as treatment of painful bicipital cramping after tenotomy of LHBT.