[Pain and Achilles tendon shortening in patients with idiopathic toe walking]

Idiopathic toe walking (ITW) is a heterogeneous disorder, which is associated with muscle shortening in lower limbs, pain and neurodevelopmental disorders. We try to study the frequency of clinical features in patients with ITW.

Out of 100 patients evaluated with toe walking in a pediatric rehabilitation clinic, 77 (24,7% women) patients were diagnosed with ITW by means of TWT questionnaire. Achilles' tendon shortening with Silfverskiold manoeuvre, pain and attention deficit hyperactivity disorder (ADHD) were studied. In the group of patients with pain (n = 30), we studied pain evolution by means of a telephonic interview which assessed intensity, location, school absenteeism and used therapies.

Out of 77 patients, 44.2% had family history of toe walking. 37.7% and 9.1% showed Achilles' tendon shortening and Knee flexor shortening, respectively. Confirmed diagnosed of ADHD was present in 9.1% and was suspected in 20.8%. The older the patient was, the higher frequency of pain and the lower passive ankle dorsiflexion. Pain has a moderate-severe intensity, was related with school absenteeism in 42.3% of the patients with pain. Pain was located mainly on the calf, the ankle and the foot. It was treated with physiotherapy, oral pain relievers, orthosis and botulinum toxin type A (BTxA).

Pain in ITW is frequent, have a moderate-severe intensity, interferes in normal life and is referred in older children with lower ankle dorsiflexion. We found a common association between ITW and ADHD which points out ITW as alarm sign of learning problems.