title: Feasibility of a cost-effective, video analysis software-based mobility protocol for objective spine kinematics and gait metrics: a proof of concept study.
abstract: The purpose of this study was to investigate the potential of a high-throughput, easily implemented, cost-effective, video analysis software-based mobility protocol to quantify spine kinematics. This prospective cohort study of clinical biomechanics implemented 2-dimensional (2D) image processing at a tertiary-care academic institution. Ten healthy, able-bodied volunteers were recruited for 2D videography of gait and functional motion. The reliability of a 2D video analysis software program for gait and range of motion metrics was evaluated over 2 independent experimental sessions, assessing for inter-trial, inter-session, and inter-rater reliability. Healthy volunteers were evaluated for simple forward and side bending, rotation, treadmill stride length, and more complex seated-to-standing tasks. Based on established intraclass correlation coefficients, results indicated that reliability was considered good to excellent for simple forward and side bending, rotation, stride length, and more complex sit-to-standing tasks. In conclusion, a cost-effective, 2D, video analysis software-based mobility protocol represents a feasible and clinically useful approach for objective spine kinematics and gait metrics. As the complication rate of operative management in the setting of spinal deformity is weighed against functional performance and quality of life measures, an objective analysis tool in combination with an appropriate protocol will aid in clinical assessments and lead to an increased evidence base for management options and decision algorithms.
authors.affiliation: Orthopaedic Surgery, New York University Hospital for Joint Diseases, 306 East 15th St, New York, NY 10003(∗). Electronic address: justin.paul@nyumc.org.
authors.forename: Justin C
authors.initials: JC
authors.lastname: Paul
authors.affiliation: Orthopaedic Surgery, New York University Hospital for Joint Diseases, 306 East 15th St, New York, NY 10003(†).
authors.forename: Anthony
authors.initials: A
authors.lastname: Petrizzo
authors.affiliation: Rehabilitation Medicine, New York University Langone Main Campus Rusk Rehabilitation, New York, NY(‡).
authors.forename: John-Ross
authors.initials: JR
authors.lastname: Rizzo
authors.affiliation: Orthopaedic Surgery, New York University Hospital for Joint Diseases, 306 East 15th St, New York, NY 10003(§).
authors.forename: Kristina
authors.initials: K
authors.lastname: Bianco
authors.affiliation: Orthopaedic Surgery, New York University Hospital for Joint Diseases, 306 East 15th St, New York, NY 10003(¶).
authors.forename: Stephen
authors.initials: S
authors.lastname: Maier
authors.affiliation: Orthopaedic Surgery, New York University Hospital for Joint Diseases, 306 East 15th St, New York, NY 10003(#).
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Errico
authors.affiliation: Orthopaedic Surgery, New York University Hospital for Joint Diseases, 306 East 15th St, New York, NY 10003(∗∗).
authors.forename: Virginie
authors.initials: V
authors.lastname: Lafage
mesh_terms: D000328:Adult; D003362:Cost-Benefit Analysis; D005240:Feasibility Studies; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results; D012984:Software; D013131:Spine / Q000502:physiology*; D014741:Video Recording; D055815:Young Adult