Can be idiopathic but is often related to neuromuscular conditions including Hereditary Sensory and Motor Neuropathy, cerebral palsy, polio (unilateral) and spinal cord tethering from spina bifida occulta
Clinical features
Pain in the arch of the foot
Claw toes often accompany pes cavus
Investigations
Imaging:
WB x-ray of foot
MRI spine if tumour is suspected
Management
Soft tissue releases and tendon transfer if supple, or calcaneal osteotomy if more rigid
