• Journal of the Korean Orthopaedic Association
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• v.54 no.2
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• pp.133-140
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• 2019

Purpose: This study examined the radiological and clinical outcomes of tibiotalocacalcaneal arthrodesis using retrograde intramedullary nailing in a severe hindfoot deformity and ankle/subtalar arthritis. Materials and Methods: A total of 22 patients (22 cases) with a severe hindfoot deformity and arthritis underwent tibiotalocalcaneal arthrodesis with retrograde intramedullary nails. The average age was 57.4 years (22-82 years) and the mean follow-up was 29.6 months (12-74 months). The radiological outcomes included an assessment of the preoperative and postoperative coronal ankle alignment, hindfoot alignment, sagittal alignment, and postoperative union time. The clinical outcomes were evaluated using the visual analogue scale (VAS), American Orthopaedic Foot and Ankle Society (AOFAS) score, and postoperative complications. The results were analyzed statistically by dividing the patients into two groups based on a 10° angle of deformity. Results: Regarding the preoperative coronal ankle alignment, 14 patients had a mean varus deformity of 17.8°±14.5° and six had a mean valgus deformity of 8.1°±6.6°. Postoperatively, a satisfactory postoperative coronal ankle alignment of less than 5° was obtained in all patients. Regarding the preoperative hindfoot alignment, 12 patients showed a mean varus deformity of 15.2°±10.5° and six had a mean valgus deformity of 8.1°±4.2°. In total, 94.4% (17 patients) had satisfactory postoperative hindfoot alignment of less than 5°. Radiological union was achieved in 90.9% at an average of 19.2 weeks (12-32 weeks) and there were 2 cases of nonunion. The clinical outcomes showed improvement in the mean VAS and AOFAS scores (p<0.001, p<0.001, respectively). Even a preoperative severe deformity more than 10° showed a significant deformity correction of coronal ankle alignment and hindfoot alignment, postoperatively (p<0.001, p<0.001, respectively). No significant differences were found between the patients with a preoperative coronal ankle deformity more than 10° and those less than 10° regarding the mean postoperative coronal ankle alignment (p=0.162). Conclusion: Tibiotalocalcaneal arthrodesis using retrograde intramedullary nailing is an acceptable technique for achieving satisfactory deformity correction, high union rate with minimal complications, and improvement of the clinical outcomes. In addition, tibiotalocalcaneal arthrodesis using retrograde intramedullary nailing is considered an effective treatment option, particularly in severe ankle and hindfoot deformities.

• 대한관절경학회:학술대회논문집
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• 2006.11a
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• pp.45-48
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• 2006

• Journal of Korean Foot and Ankle Society
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• v.15 no.2
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• pp.86-91
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• 2011

Purpose: To evaluate the effectiveness as well as correct the post-traumatic severe ankle equinus deformity by conducting the treatment surgery, which is divided into 2 stages, soft tissue adhesiolysis and ankle arthrodesis. Materials and Methods: We have conducted the methods, which are Z-plasty Achilles tendon lengthening, multiple capsulotomy and tendon lengthening (flexor hallucis longus muscle, flexor digitorum longus, posterior tibialis tendon) for 10 patients who has shown equinus deformity after post-traumatic compartment syndrome due to the injury. The average age of patients was 33.7 year-old; there were 8 men and 2 women, and the follow up period was 13 months (6~31 mon). Outcomes were rated based on American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, Visual Analogue Scale (VAS) and patient's satisfaction after operation. Results: The average degree of preoperative equinus deformity was 64 degree (-60~-70), and we've obtained AOFAS anklehindfoot score that was evaluated after 4 months of 2nd operation which was 76.7 score on average. We've also checked the decreased pain score from all of the patients according to the fact that the average VAS before the surgery was 6 (4~8), but it reduced to 3 (1~4). The patient's satisfaction showed generally great satisfactions which was 5 cases were excellent, 2 cases were good, and 3 cases were fair. Conclusion: The two staged surgical treatment of post -traumatic severe ankle equinus deformity, which was conducted of soft tissue adhesiolysis and arthrodesis, could be one of the effective methods to improve patients walking ability.

• Journal of Korean Foot and Ankle Society
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• v.1 no.1
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• pp.38-42
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• 1997

It was well known that arthrodesis of the tarsal joint is an exellent procedure to correct the flatfoot deformity for relieving pain. Recently, concept of the selective tarsal joint fusion instead of the triple fusion was developedto preserve the joint motion. To investigate and compare the effect of the each different tarsal fusion, we measured the strain at the spring ligament, medial roof of the medial longitudianl arch. Five fresh frozen cadevar foot specimens, with distal half of the tibia were utilized. The superomedial portion of the spring ligament complex was dissected from the origin to the insertion. For each specimen, a calibrated open liquid metal strain guage was secured along the length of the superomedial portion. Under the specially devised test rig, measurement of the strain was taken at each test condition from the tare weight 18.2 lb followed by 38.2 lb., 82.2 lb and a maximum loads of 134.6 lb. : 1) unfused condition, 2) isolated subtalar fusion 3) isolated talonavicular fusion 4) combined subtalar and talonavicular fusion 5) triple fusion. Statistics showed that siginificant reduction in strain following the triple fusion, and from the subtalar fusion to triple fusion.

• Archives of Reconstructive Microsurgery
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• v.9 no.1
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• pp.49-55
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• 2000

Nonunion and avascular necrosis are well-recognized complications of severe ankle injury especially aftrer talar neck fracture. The treatment of avascular necrosis is controversial and methods of treatment are limited. Many modalities have been introduced for the treatment of avascular necrosis of talus. The prolonged non-weight bearing for 2~3 years is not practical but also is occasionally complicated by late segmental collapse. Operative treatment includes tibiotalar arthrodesis and talectomy with tibiocalcaneal arthrodesis, but arthrodesis in patients with talar avascular necrosis is technically demanding and cause stiff, immobile foot and relatively high failure rate was reported. It is desirable to preserve their original joint if possible. Vascularized fibular grafting has been reported as a joint preserving treatment option for osteonecrosis of the hip but has not been described for the ankle. The authors applied free vascularized fibular grafts for 3 cases of avascular necrosis of talus. We observed evidences of revascularization of necrotic talar body and progression of fracture healing and obtained satisfactory results at mean 8 months of follow-up. Vascularized fibular grafting is one of the better alternatives for treating avascular necrosis of talus. It is expected that vascularized fibular grafting can prevent the necrotic talar dome from progressing to collapse and promote directly restored vascularization and new bone formation.

• Journal of Korean Foot and Ankle Society
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• v.26 no.4
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• pp.157-162
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• 2022

Total ankle arthroplasty has become a viable motion-preserving alternative to ankle arthrodesis, especially in the last two decades. Recent improvements have been achieved in the strength of implant design and surgical technique. Nevertheless, addressing preoperative deformities is essential for successful outcomes of total ankle arthroplasty. Residual malalignment can produce instability and edge loading, causing acceleration of polyethylene wear, followed by osteolysis and an increased risk of revision surgery. Therefore, the accompanying deformities and their correction techniques need to be comprehensively elucidated and understood. In this article, we provide a review of the application of total ankle arthroplasty in arthritis with coronal plane varus and valgus deformities.

• Journal of Korean Foot and Ankle Society
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• v.18 no.2
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• pp.48-55
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• 2014

Hallux valgus, or a 'bunion', is a deformity characterized by lateral deviation of the big toe. Surgery is indicated when conservative treatments have failed to result in improvement of symptoms. Operative techniques include simple bunionectomy, distal soft tissue procedure, phalangeal osteotomy, metatarsal osteotomy (distal, shaft, or proximal), arthrodesis (metatarsophalangeal or tarsometatarsal), or resection arthroplasty. Good results are expected when the selection of operative technique is based on the correct treatment principle.

• Journal of Korean Foot and Ankle Society
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• v.13 no.2
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• pp.189-192
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• 2009

M$\ddot{u}$ller-Weiss disease is a rare disease presenting severe deformity of navicular with osteoarthritis. This disease can be confused with Kohler's disease, but has a different entity. A 68 years-old male with painful mid-foot deformity had diagnosed as M$\ddot{u}$ller-Weiss disease, and triple arthrodesis with autogenous iliac bone graft had been performed on his left foot. Here is a report of our case with brief review of this disease.

• Journal of Korean Foot and Ankle Society
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• v.16 no.4
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• pp.270-275
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• 2012

There may be complications after comminuted or intraarticular calcaneal fracture regardless of the initial treatment. Transcalcaneal talonavicular dislocation is rarely reported severe form of calcaneal fracture. We experienced a neglected transcalcaneal talonavicular subluxation case, who had been treated for intraarticular calcaneal fracture conservatively. Subtalar distraction bone block fusion was done for calcaneal malunion with talonavicular subluxation. Inspite of successful subtalar fusion, pain was persisted because of talonavicular re-subluxation with arthritis and calcaneocuboid arthritis. So, second operation, the talonavicular and calcaneocuboid fusion, was done. After union achieved, the patient's foot pain was improved. Calcaneal malunion combined with talonavicular subluxation and unstable transverse tarsal joint, such as this case, initial triple arthrodesis could be considered.

• Journal of Korean Foot and Ankle Society
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• v.16 no.1
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• pp.26-30
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• 2012

The subtalar joint is a complex joint that is functionally responsible for inversion and eversion of the hindfoot. Advances in optical technology and surgical instrumentation have allowed the arthorscocpic surgeon to investiagate the small joints including the subtalar joint. Indications for subtalar arthroscopy include pain, swelling, stiffness and locking. Therapeutic indications include treatment of chondromalacia, osteophytes, arthrofibrosis, synovitis, loose bodies, osteochondral lesions, excision of a painful os trigonum, arthrodesis, and FHL tendinopathy. Contraindications to subtalar arthroscopy include infection, advanced osteoarthritis with deformity, severe edema, poor vascularity and poor skin quality. Subtalar arthroscopy is a technically demanding and difficult procedure that should only be performed by experienced surgeons. With proper instrumentation and careful operative techniques, satisfactory results may be obtained with minimal morbidity.