Morphing torso mannequin for pressure measurement and scoliotic brace efficacy evaluation

Abstract

Fashion plays a critical role in self-expression and confidence-building, but adolescents with adolescent idiopathic scoliosis (AIS) have limited fashion choices when they wear a spinal brace that is bulky and rigid underneath their clothing. Spinal braces also have a significant impact on their self-and body-images, social life, and overall quality of life. This study proposes a morphing torso mannequin that accurately measures the interface pressure between the brace and skin, and evaluates the effectiveness of scoliosis braces, thus eliminating the need for ongoing X-rays and ensuring patient safety. The constructed mannequin replicates the AIS torso by using a validated finite element model and 3D-printing and molding techniques. A comparison of the in-brace effects on the morphing mannequin shows significant improvements in spinal alignment and reductions in Cobb’s angles (5.2° and 2.2°), which is consistent with clinical X-ray images. The large correlation coefficient (0.95) between the mannequin and clinical results confirms its ability to simulate the corrective effects of spinal bracing accurately. The proposed morphing mannequin provides valuable information for applying appropriate pressure to halt the progression of spinal curvature while maximizing the wear comfort for AIS patients. Additionally, the mannequin allows for the assessment of clothing fit, thus simulating the effects of wearing a brace and enabling fashion designers to create garments that accommodate the unique physical profile of AIS patients.