Lower limbs heterometry correction in patients with osteoporosis and increased risk of falls.

Osteoporotic fractures are associated with a significant increase in morbidity, mortality and medical costs. There is also a strong link between fractures and increased mortality. Among effective measures for the prevention of falls, instability treatment surely plays a crucial role. Several factors contribute to instability, many of which are ageing-related: visual spatial deficit, strength reduction, weight imbalance with COP lateralization sometimes favoured by LLD (leg length discrepancy). It seems useful to detect an heterometry which could be corrected, if present. The aim of our work is to assess the responses of individuals with heterometry diagnosis to the wedge positioning, using the balance board Lizard 3.0®. In the period between January 2013 and September 2013, 52 patients were recruited with clinical heterometry >5 mm among those that were treated in the Recovery and Rehabilitation Agency's postural clinic of the Careggi Hospital Orthopedic Trauma Centre in Florence. Our measurements have revealed that there is a statistically significant correlation (p<0.5) between clinical limb shortening expressed in mm and location of the weight imbalance at the stabilometric examination at T0; our data shows that the majority of patients with clinical heterometry shows a weight imbalance on the longer limb. After heterometry correction, 21 patients showed a statistically significant reduction (p<0,01) in weight imbalance expressed in kg between T0 and T1 and have been assigned to group 1, the remaining 31 worsened and have been assigned to group 2. From the results of our study, it is clear that the correction of lower limbs heterometry shouldn't be based only on clinical measuring of the limbs length discrepancy, even if very accurate.