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Updated: Feb 24, 2026

A Mouse Distraction Osteogenesis Model
Published on: November 14, 2018
Distraction Osteogenesis for Brachymetatarsia by Using Internal Device
Reina Kitabata1, Yoshiaki Sakamoto1, Tomohisa Nagasao1
1Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan; and Department of Plastic and Reconstructive Surgery, Kagawa University School of Medicine, Kagawa, Japan.
Congenital brachymetatarsia, a shortening of the fourth metatarsal bone, can now be treated with internal distraction devices for bone lengthening. This method offers advantages over external distraction techniques for metatarsal lengthening.
Area of Science:
- Orthopedic surgery
- Regenerative medicine
- Biomechanical engineering
Background:
- Congenital brachymetatarsia commonly affects the fourth ray, potentially causing cosmetic and functional issues.
- Metatarsal shortening can also be associated with metacarpal shortening.
- Traditional treatments often involve complex procedures or external devices.
Observation:
- External distraction devices have been reported as useful for metatarsal lengthening.
- This study focuses on utilizing an internal distraction device for metatarsal lengthening.
- The fourth metatarsal is the most frequently involved bone in congenital brachymetatarsia.
Findings:
- Internal distraction osteogenesis effectively lengthens the shortened fourth metatarsal.
- This technique provides a viable alternative to external distraction devices.
- The internal device offers potential advantages in treatment and patient comfort.
Implications:
- Internal distraction devices represent an advancement in treating congenital brachymetatarsia.
- This approach may lead to improved functional and aesthetic outcomes for patients.
- Further research can explore the long-term efficacy and broader applications of internal distraction for limb lengthening.
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