Feet deformities in patients with hip osteoarthritis

Abstract

Background: The lower limb constitutes a complex motor system consisting of interdependent components. Any feet disorder may cause disturbances in the biomechanics of the entire lower limb and in consequence can lead to joint degeneration and affect gait. Methods: Participants were divided into two groups. The research group consisted of n = 60 patients with hip osteoarthritis, aged 52–84 and the control group consisted of n = 32 individuals without hip osteoarthritis, aged 50–74. A dynamic pedobarographic analysis was conducted using a RSScan® International Footscan system — a two-meter-long plantar pressure platform with an interface box. Upon completion of the measurement, results were printed and foot deformity was assessed using: Wejsflog index, Clarke’s angle, hallux Valgus ALFA angle, pronation-supination index. Results: The research group had a significantly lower mean Wejsflog index compared to the control group (2.32 vs 2.59). Results showed also that Hallux Valgus ALFA angle was significantly higher and Clarke’s angle significantly lower in the research group when compared to the control group. Conclusions: Foot deformities are significantly more common among patients with hip osteoarthritis. Fallen medial longitudinal arch, fallen transverse arch and hallux valgus are factors to consider in prevention and treatment of hip osteoarthritis.