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Study identifier: NCT05497609 Synced from ClinicalTrials.gov · July 28, 2026
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The Muscle in Children With Cerebral Palsy - Longitudinal Exploration of Microscopic Muscle Structure.

Condition: Cerebral Palsy · Muscle Contraction · Muscle Spasticity  ·  Sponsor: Eva Ponten

PhaseN/A
Planned participants50
Who can joinAll sexes, 2 Years to 18 Years
Healthy volunteersNo

About this study

Cerebral palsy (CP) is a motor impairment due to a brain malformation or a brain lesion before the age of two. Spasticity, hypertonus in flexor muscles, dyscoordination and an impaired sensorimotor control are cardinal symptoms. The brain lesion is non-progressive, but the flexor muscles of the limbs will during adolescence become relatively shorter and shorter (contracted), forcing the joints into a progressively flexed position. This will worsen the positions of already paretic and malfunctioning arms and legs. Due to bending forces across the joints, bony malformations will occur, worsening the function even further. Since about 25 years a combination treatment with intramuscular botulinum toxin injections, braces and training has had a tremendous and increasing popularity, although lasting long-term clinical advantage is not yet proven. Muscle morphology of the biceps brachii and the gastrocnemius muscles: * The hypothesis is that care as usual, i.e. training and splinting sessions with botulinum toxin as adjuvant treatment, will reduce (normalize) the expression of the fast fatigable myosin heavy chain MyHC IIx and increase the expression of developmental myosin, as a possible sign of growth. As the biceps in the arm is used irregularly and voluntarily, and the gastrocnemius is activated during automated gait, the adaptations of those muscles will be different. Methods: Baseline muscle biopsies: Percutaneous biopsies are taken just before the first intramuscular botuli…

This description comes directly from the study's public registry record.

Talk to the study team

Eva M Pontén, MD PhD  ·  +46706303052  ·  eva.ponten@ki.se

Alexandra Palmcrantz  ·  alexandra.palmcrantz@ki.se

Always discuss trial participation with your own doctor first.

Locations (1)

Karolinska University HospitalStockholm, SwedenRecruiting

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Source record: clinicaltrials.gov/study/NCT05497609