The Journal of Bone and Joint Surgery, Vol 68, Issue 8 1249-1257, Copyright © 1986 by Journal of Bone and Joint Surgery, Inc
Adult-onset hemiplegia: changes in gait after muscle-balancing procedures to correct the equinus deformity
MS Pinzur, R Sherman, P DiMonte-Levine, N Kett and J Trimble
Fifty-four adult patients with acquired spastic equinus and equinovarus
deformity were treated with lengthening of the Achilles tendon, lateral
transfer of the anterior tibial tendon, and appropriate muscle releases.
All patients had preoperative dynamic electromyography and
electrogoniometry performed in order to assist in planning the surgical
procedures and to provide a baseline assessment of the dynamic deformities.
Preoperatively, the stance and double-support phases of gait were
prolonged. Throughout the stance phase, the gait of these patients was
characterized by equinus deformity of the ankle, decreased flexion of the
knee (hyperextension in the most severely involved patients), and increased
flexion of the hip (which also varied with the severity of the equinus
deformity of the ankle and hyperextension of the knee). In all patients,
the operation was performed at least one year after onset of the
hemiplegia. Clinical follow-up at an average of thirty months (range,
twenty-four to sixty-two months) showed that the equinus deformity was
corrected in all patients and that 59 per cent of them were brace-free. Two
patients had a superficial infection that healed uneventfully, and two had
pull-out of the tendon that required reoperation. Postoperative analyses of
gait, performed at least one year after surgery for twenty-seven of the
patients, showed that the stance and double-support phases of gait (which
had been prolonged before surgery) approached the findings in normal
control subjects.(ABSTRACT TRUNCATED AT 250 WORDS)