a gait disturbance, characterized by walking on the heel, due to paralysis of the calf muscles, seen following poliomyelitis and in some other neurologic diseases.
A gait disturbance most commonly seen in children with spastic diplegia (cerebral palsy), which is characterised by heel walking with ankle dorsiflexion 1 standard deviation above the mean in the sagittal plane for all phases of gait, especially during mid-stance. It is more common after heel-cord lengthening.
Muscle imbalance favours ankle dorsiflexion (L5), and there is a lack of plantar flexion (S1), resulting in a calcaneus gait. This results in a weak push-off and a crouch gait, but more importantly a trophic ulcer of the insensate heel that can lead to calcaneal osteitis and eventually destruction of the calcaneus (Fig.