Kinematic limitations during obstacle-crossing in adolescent idiopathic scoliosis

• Published in: Gait & posture 2023-09, Vol.106, p.S398-S399
• Main Authors: Rassam, Maria, Hoyek, Karim, El Hayeck, Rony, Haddad, Georges, Wakim, Emmanuelle, Mekhael, Elio, Nassim, Nabil, Ghanem, Ismat, El Rachkidi, Rami, Assi, Ayman
• Format: Article
• Language: English
• ISSN: 0966-6362; 1879-2219
• DOI: 10.1016/j.gaitpost.2023.07.203

Scoliosis is a 3D spinal deformity that is known to affect patient’s alignment on static radiographs [1] and their movement during walking or other daily life activities [2]. Crossing obstacles is a common activity that can challenge patients’ stability. However, kinematics of the obstacle-crossing movement is still unknown in adolescent idiopathic scoliosis (AIS). Are kinematics affected in patients with AIS during obstacle-crossing? 18 AIS patients with major right convexity thoracic scoliosis (Cobb: 38° [25-55°]) and 15 controls (age and sex matched: 16 years, 85% F) underwent biplanar X-rays in standing position with the calculation of 3D radiographic spinopelvic parameters. 3D movement analysis was performed during obstacle-crossing, obstacle being fixed at 30% of lower limb length, and executed once with each leg leading the movement. Kinematic parameters of the head, trunk, pelvis, lower limbs and spinal segments were calculated [3,4]. Parameters were compared between the 2 groups and the relationship between kinematic and radiographic variables was investigated. During obstacle-crossing, AIS patients showed an increased thorax extension compared to controls (-19 vs 6°, p