Study of the effect of sensory dynamic orthosis on postural control in a case of nemaline myopathy

Resumen

Background: the analysis and assessment of balance and postural control parameters are carried out using standardized system frameworks (Timed up, Go Test, Tinetti or Berg), which require physical and cognitive abilities that are not always present in certain patients with disabilities. Stabilometry and posturography are objective and applicable assessment methods. Case presentation: we present a case of a 7-year-old girl diagnosed with congenital etiology nemaline myopathy type III, whose aim is to assess both the immediate and long-term impact of the sensory dynamic orthosis (SDO®) on balance control following a ten-week period. The child was assessed using a pressure platform (Podoprint Namrol). The evaluations were performed in sitting position with and without the SDO® (eyes open and eyes closed). Results: shorter displacements of the center of pressure in the medial-lateral axis were collected in the first clinical evaluation wearing the SDO® (variability with eyes open 77.78 %; with eyes closed 76.31 %) while in the second clinical evaluation without the SDO® 52.77% variability (eyes open) and 84.21 % (eyes closed). Furthermore, there was less displacement of center of pressure (COP) in the anterior-posterior axis with the SDO® 19.07 % variability EO (Eyes Open) and 15.75 % EC (Eyes Closed) if compared to the first evaluation. Conclusion: the exclusive use of the sensory dynamic orthosis in this case, it does not seem to produce improvement in a long-term balance control, hence it should be complemented with additional therapies.