Fig. 3From: Improvement in functional gait parameters following corrective thoracolumbar surgery in children affected by Mucopolysaccharidosis 1 (Hurler syndrome)Identification of quadrilaterals, midline of foot and the line of progression using the walkway- Image reproduced with permission from CIR Systems, Inc. GAITRite Electronic walkway technical reference (WI-02-15. Rev. L 5/6/2013)Back to article page