• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.263-264
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• 2008

• Journal of Korean Foot and Ankle Society
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• v.10 no.2
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• pp.156-162
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• 2006

Purpose: To evaluate the results and effectiveness of distal chevron osteotomy combined with lateral soft tissue release for the correction of hallux valgus deformity. Materials and Methods: 31 patients who underwent distal chevron osteotomy with lateral soft tissue release between July 2002 and June 2003, were analyzed in terms of hallux valgus angle, intermetatarsal angle, subluxation of sesamoid, AOFAS score and the occurrence of avascular necrosis of the first metatarsal head. Results: The mean amount of the correction of hallux valgus angle was $26.3^{\circ}$. The mean amount of the correction of intermetatarsal angle was $6.6^{\circ}$. The mean amount of the correction of sesamoid subluxation was 1.2 points. The mean improvement of AOFAS score was 25.8 points. Avascular necrosis of the first metatarsal head was not found in any cases. Conclusion: For correction of hallux valgus deformity, distal chevron osteotomy with lateral soft tissue release showed improvement of hallux valgus angle, sesamoid subluxation and AOFAS score with no evidence of avascular necrosis of the first metatarsal head.

• Journal of Korean Foot and Ankle Society
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• v.21 no.3
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• pp.83-87
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• 2017

Metatarsalgia means the pain under the lesser metatarsal heads. The many causes of metatarsalgia can be categorized into three groups: local disease in the region, altered forefoot biomechanics, and systemic disease affecting the region. Surgical options need to be considered if nonsurgical treatment fails. The metatarsal osteotomies are designed primarily to reduce the weightbearing forces on the metatarsal head by elevating or shortening the metatarsal. Many lesser metatarsal osteotomies have been described, and their success depends on many factors. Regardless of the method employed, it is important to maintain or restore the metatarsal cascade to maintain an even pressure under the lesser metatarsal heads and prevent transfer lesions. The surgeon must understand the effects of the metatarsal osteotomy on the forefoot patho-biomechanics and decide, using a combination of clinical examinations and imaging, whether the desired effect of the osteotomy is to shorten or elevate the metatarsal head or both.

• Journal of Korean Foot and Ankle Society
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• v.19 no.4
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• pp.197-200
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• 2015

The Akin osteotomy is a complimentary procedure in hallux valgus surgery. Surgical techniques may vary depending on the operators or fixation devices. Suture fixation, for which a removal procedure is not necessary, can often be recommended. However, there is a risk of failure due to the thin cortex of the phalanx. We describe a new technique using Ethibond suture fixation in Akin osteotomy, which can lower the risk of phalangeal cortical failure and articular cartilage irritation. First, the Akin osteotomy was performed on the proximal phalanx 5 to 6 mm distal to the first metatarsophalangeal joint. Then bone holes were drilled from dorsum to plantar parallel to osteotomy with the Kirschner wire. The final procedure involved passing the Ethibond sutures connected to a straight needle through the holes and tying it. This fixation method offers an effective and easy technique for performance of Akin osteotomy.

• Journal of Korean Foot and Ankle Society
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• v.11 no.1
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• pp.115-119
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• 2007

Avascular necrosis of the first metatarsal head is uncommon. It is most often seen following a distal metatarsal osteotomy for hallux valgus. Although many cases may be subclinical, it is a powerful cause of failure of bunion surgery. Avascular necrosis of the first metatarsal head results in a series of events that begins with phases of avascularity; revascularization, with or without collapse; and reossification. Collapse may result in degenerative change of the metatarsophalangeal joint. We have recently experienced a case of avascular necrosis of the first metatarsal head.

• Journal of Yeungnam Medical Science
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• v.4 no.1
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• pp.157-163
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• 1987

Osteogenesis imperfecta has been categorized as a heritable disorder of connective tissue affecting both bone and soft tissues and is characterized by fragility of bone, blue sclerae, and deafness, less frequently by dentinogenesis imperfecta and laxity of ligament. The goals of orthopedic management with osteogenesis imperfecta are the treatment of acute fractures and long-term rehabilitation in an effort to maintain ambulation. We report a case of osteogenesis imperfecta with anterior bowing of tibia which was successfully corrected by multiple osteotomies and intramedullary fixation by Sofield method and reviewed literatures.

• Journal of Korean Foot and Ankle Society
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• v.6 no.1
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• pp.96-99
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• 2002

There are many reports on the various methods of treatment for hallux valgus. 1st metatarsal proximal osteotomy with distal soft tissue procedure or 1st metatarsophalangeal joint arthrodesis has been conventionally used for treatment of severe hallux valgus. We performed a new double chevron osteotomy in 3 cases and obtained satisfying results. We present this procedure as a new method of treatment for severe hallux valgus.

• Journal of Korean Foot and Ankle Society
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• v.21 no.4
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• pp.122-127
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• 2017

This paper reviews the indications and surgical technique of supramalleolar osteotomy as one of the treatments for moderate degenerative ankle osteoarthritis. Although it is technically demanding and requires extensive preoperative planning, supramalleolar osteotomy will be a good treatment option for moderate degenerative ankle osteoarthritis. The osteotomy is designed to shift the weight bearing axis to the lateral side of the ankle joint and unload the medial side of the joint. In our experience, a supramalleolar osteotomy is effective to the treatment of moderate ankle osteoarthritis with a small amount of preoperative talar tilt and varus or normal heel alignment.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2003.06a
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• pp.698-700
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• 2003

This paper presents a model and analysis techniques for a unilateral external fixator to achieve fracture reduction and deformity correction in long bones precisely. through fixator joint adjustment. Combining the kinematic analysis with a graphic model of the tibia and the fixator allowed 3D simulation and visualization of the adjustments required to reduce fracture or correct bone deformity after osteotomy. The model and analysis technique can be used for fixator evaluation and clinical application planning.

• Journal of Korean Foot and Ankle Society
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• v.2 no.2
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• pp.64-70
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• 1998

Primary osteoarthritis of the ankle without history of trauma is rare. We are reporting the use of a low tibial osteotomy on 2 ankles in one patient. The osteotomy is designed to correct the varus tilt and anterior opening of the distal tibial joint surface where it has been shown by weight-bearing radiographs. Follow-up at 8 months the result showed to be excellent, by Takakura's scoring system. We experienced that slight overcorrection of deformity by low tibial osteotomy is effective in treating intermediate-stage primary osteoarthritis of the ankle.