LAUSR

Introduction/Background There is no strong consensus on the modalities about the duration of time wearing thoraco-lombo-sacral-orthosis in chronic low back pain. To evaluate the influence of orthotic wear time on the isokinetic parameters of low back muscles. We choose a temperature monitoring device and present a preliminary study of 7 patients. Material and method Patients included in this study were treated in the department of physical medicine and rehabilitation of the Desgenettes Army Training Hospital. Observance was assessed using an ELITECH® RC-4 data logger. Each device is attached to the posterior part of the TLSO, protected by a box inaccessible to the patient and the external sensor is buried at the level of the waist and directly in contact with the patient. Each patient realized an isokinetic evaluation at start and at the end of wearing the orthosis. Results For each patient, we calculate the average time wearing orthosis per day, and we study the correlation with the evolution of the isokinetic parameters of the spinal musculature. The first results show that there is no significantly decrease of the isokinetic parameters in concentric test, we confirm that the use of the rigid orthosis increases the eccentric peak torque of the spinal extensor, which can explain the efficiency in addition to the analgesic effect. Conclusion A precise and reliable measurement of the wearing time of TLSO is essential for the study of the impact on the isokinetic parameters in chronic low back pain. The device for recording the temperature at the orthosis is therefore simple, reliable and reproducible.