Flatfoot deformity affected the kinematics of the foot and ankle in proportion to the severity of deformity

• Published in: Gait & posture 2019-07, Vol.72, p.123-128
• Main Authors: Shin, Hyuck Soo, Lee, Jae Hee, Kim, Eo Jin, Kyung, Min Gyu, Yoo, Hyo Jeong, Lee, Dong Yeon
• Format: Article
• Language: English
• Subjects: Aged; Aged, 80 and over; Ankle; Biomechanical Phenomena; Female; Flatfoot; Foot; Gait; Gait analysis; Humans; Inter-Segmental foot motion; Middle Aged; Motion; Multi-Segment foot model; Range of Motion, Articular
• ISSN: 0966-6362; 1879-2219
• DOI: 10.1016/j.gaitpost.2019.06.002

•Flatfoot affected the foot kinematics in proportion to the severity of deformity.•Foot kinematics of the moderate flatfoot were similar with the normal control.•There might be a threshold of flatfoot precluding normal foot kinematics. : Flatfoot deformity is thought to affect gait kinematics, but the effect of flatfoot on segmental motion of the foot during gait remains unclear. Recently, multi-segmental foot models (MFMs) have been introduced for the in vivo analysis of dynamic foot kinematics. The objective of this study was to find the effect of flatfoot on segmental motion of the foot during gait in females by comparisons with age and gender controlled healthy adults. : Thirty six symptomatic flatfeet patients (52–80 years old) and 42 symptom-free female participants without flatfoot (60–69 years old) were included in this study. According to the Meary angle (MA) on standing lateral radiograph, flatfoot patients are divided into severe (SFF, MA>20°) and moderate (MFF, 10°