Linear morphea is a disease that affects the subcutaneous tissue and the skin generating its hardening due to the excess of collagen production, causing joint contracture that can involve muscle and bone preventing the growth of the affected limb. This study analyzes the gait of a 13-year-old patient who was diagnosed with this pathology, a biomechanical analysis was performed using baropodometric tests and gait analysis. For this, conventional tests were carried out using specialized sensors, how the test results were designed and the development of an orthotic support device, as an actuator to improve the patient's condition. Subsequently, the use of the device in the patient was implemented to evaluate its effectiveness by comparing the tests performed before and after use. It was identified that improves the quality of the patient gait and in the parameters such as the distribution of body weight and its stability.