Personalized Toe Spreaders with Three-Dimensional Scanning and Printing for Hallux Valgus

Ho, Yong; Lee, Keun Ho; Kim, Dong Kyu; Kim, Sung Jae

doi:10.11159/icbes16.103

Cited by 3 publications

(2 citation statements)

References 12 publications

(11 reference statements)

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“…In addition, ready-made toe spreaders do not accurately fit the toe spaces of each patient; thus, the toe axis cannot be accurately corrected. In 2018, Cha et al [28] designed personalized toe spreaders with three-dimensional scanning and printing and successfully applied them in eight patients with hallux valgus.…”

Section: Hallux Valgusmentioning

confidence: 99%

Forefoot disorders and conservative treatment

Park

Lee

2019

Yeungnam Univ J Med

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Forefoot disorders are often seen in clinical practice. Forefoot deformity and pain can deteriorate gait function and decrease quality of life. This review presents common forefoot disorders and conservative treatment using an insole or orthosis. Metatarsalgia is a painful foot condition affecting the metatarsal (MT) region of the foot. A MT pad, MT bar, or forefoot cushion can be used to alleviate MT pain. Hallux valgus is a deformity characterized by medial deviation of the first MT and lateral deviation of the hallux. A toe spreader, valgus splint, and bunion shield are commonly applied to patients with hallux valgus. Hallux limitus and hallux rigidus refer to painful limitations of dorsiflexion of the first metatarsophalangeal joint. A kinetic wedge foot orthosis or rocker sole can help relieve symptoms from hallux limitus or rigidus. Hammer, claw, and mallet toes are sagittal plane deformities of the lesser toes. Toe sleeve or padding can be applied over high-pressure areas in the proximal or distal interphalangeal joints or under the MT heads. An MT off-loading insole can also be used to alleviate symptoms following lesser toe deformities. Morton's neuroma is a benign neuroma of an intermetatarsal plantar nerve that leads to a painful condition affecting the MT area. The MT bar, the plantar pad, or a more cushioned insole would be useful. In addition, patients with any of the above various forefoot disorders should avoid tight-fitting or high-heeled shoes. Applying an insole or orthosis and wearing proper shoes can be beneficial for managing forefoot disorders.

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Section: Hallux Valgusmentioning

confidence: 99%

Forefoot disorders and conservative treatment

Park

Lee

2019

Yeungnam Univ J Med

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“…Recently, 3D printing has rapidly emerged as a computer-aided design and manufacturing technology [6][7][8] and is regarded as a quick and cost-effective approach for 2 of 8 developing a range of medical devices. This technology can be used to directly fabricate various prosthetic and orthotic devices from 3D geometric data and offers the benefits of customised manufacture and dimensional accuracy to meet the functional demands of individual patients.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Patients with Hallux Valgus Wearing a 3D-Printed Orthosis during Walking

Sun

Shih

Chen³

et al. 2021

Applied Sciences

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Hallux valgus (HV) is a foot deformity most commonly found in female and elderly patients. Its symptoms include foot pain, impaired gait patterns, poor balance, and falls in older adults. Recently, various HV orthoses have been introduced in the market; however, they have many shortcomings, such as high costs, unclear therapeutic effects, and effects on push-off of the foot during walking. The present study employs 3D printing technology to develop an HV orthosis and uses motion analysis to investigate the effects of wearing it. This study recruited 12 individuals with HV, who were asked to first perform a static HV measurement without orthosis, followed by a dynamic HV measurement using a Vicon motion analysis system in three trials. The results indicated that wearing the 3D-printed orthosis significantly corrected the HV angle by approximately 11° during static standing and by approximately 9° during dynamic walking. However, no significant difference was observed during use of the orthosis in terms of the ground reaction force. The obtained results demonstrate that the 3D-printed HV orthosis is an effective device for correcting the HV angle during static standing and dynamic walking, especially during the push-off phase of gait.

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