Immediate Effect of Customized Foot Orthosis on Plantar Pressure and Contact Area in Patients with Symptomatic Hallux Valgus

Abstract

Foot orthotics are recommended for the treatment of hallux valgus. The effects of customized foot orthoses (FOs) designed with both medial longitudinal and transverse arch supports are poorly understood, however. This study aimed to investigate the immediate effect of customized FOs on the plantar pressure and contact area in patients with symptomatic hallux valgus. We recruited 18 patients with a mean hallux valgus angle of 27.3 ± 11.1°. Plantar pressure while walking with FOs or flat insoles (FIs) was monitored with a wireless in-shoe plantar pressure-sensing system. Peak pressure (PP), peak force (PF), pressure-time integral (PTI), force-time integral (FTI), and contact area with FOs and FIs were compared. The PF, PTI, and FTI of the midfoot were significantly higher (p < 0.05), and the PP and PTI of the rearfoot were significantly lower (p < 0.05) with the FOs than the FIs. The FOs significantly increased the contact area of the midfoot and rearfoot (p < 0.05) and reduced the contact area of the forefoot (p < 0.05). These results suggest that customized FOs redistribute plantar pressure and the contact area of the midfoot and rearfoot, improving the functional support of the midfoot for patients with hallux valgus.

The Effects of D.I.Y Transverse Arch Orthosis on Hallux Valgus Angle and Pain in Adults with Hallux Valgus

“…보존적 치료 중에는 보조기중재, 테이핑중재, 보수볼 을 이용한 운동중재, 그리고 발가락 펴기 운동중재 등이 있다 [15][16]. 이 중 보조기를 이용한 중재에는 제1~2 발 가락 간격유지장치(Toe-spacer)와 가로아치와 세로아치 를 지지해 주는 보조기 등이 있다 [17][18]. 발가락 간격 유지장치를 착용하면 HV 변형을 겪는 환자의 균형에는 효과가 있으며 [17], 가로아치와 세로아치 지지대로 설계 된 맞춤형 발 보조기(FO)가 족저압과 발 앞부위와 뒤부 위의 접촉 면적을 재분배하여 HV 환자의 발 앞부위의 기능적 지지를 향상시킴으로써 엄지발가락에 작용하는 압력이 작아지고 발허리뼈 부위의 압력을 증가시킨다 [18][19] Figure3.…”