• Journal of Korean Foot and Ankle Society
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• v.16 no.3
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• pp.141-147
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• 2012

A tarsal coalition is an abnormal union between 2 or more tarsal bones of the hind- and midfoot, which can be congenital or acquired. The documented overall incidence of tarsal coalition is 1% or less. The resulting abnormal articulation leads to accelerated degeneration within adjacent joint. Pain is often diffuse, exacerbated by strenuous activity or following an ankle sprain. The findings on physical examination is protruded mass, diminished range of motion of the involved joint. It is possible to identify of tarsal coalitions with conventional radiography, but CT scanning necessary to evaluate of the size, location, characteristic and preoperative planning of tarsal coalitions. The initial treatment for a tarsal coalition is conservative, but tarsal coalitions unresponsive to conservative treatment, are managed by coalition resection, or arthrodesis in case of presence of degenerative changes.

• Journal of Korean Foot and Ankle Society
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• v.7 no.2
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• pp.263-268
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• 2003

Tarsal coalition is a congenital failure of segmentation resulting in fibrous, cartilaginous, or bony union between tarsal bones. Although single tarsal coalitions are common, dual tarsal coalitions are a rare occurrence. We repport of unilateral and bilateral dual calcaneonavicular and talocalcaneal coalitions.

• Journal of Korean Foot and Ankle Society
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• v.20 no.3
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• pp.116-120
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• 2016

Purpose: Tarsal coalition results from defects during the developmental stage and produes ankle pain and limitations in the range of motions. Its incidence has been reported to be 1%, but there has not been any reports with respect to Koreans. Therefore, we evaluated the prevalence of tarsal coalition in Koreans. Materials and Methods: Between 2005 and 2014, we analyzed a total of 733 cases of foot and ankle magnetic resonance imaging (MRI) in our hospital. There were 391 men and 342 women. All MRI readings were read by a radiologist in our hospital. We classified the coalitions in accordance with the histological and anatomical characteristics, and calculated the prevalence in each group. Moreover, we tried to determine the prevalence of tarsal coalitions in accordance with sex, age, and proportion of the symptomatic tarsal coalitions. Results: There were a total of 11 MRIs of tarsal coalition - 9 talocalcaneal coalitions, 1 calcaneocuboidal coalition, and 1 calcaneonavicular coalition. Nine tarsal coalitions were observed in men and 2 in women. Conclusion: Through this study, we found that the prevalence of tarsal coalition, including the asymptomatic patients, is similar to the previously known prevalence (1%). By getting more MRIs of the foot and ankle, we could better represent the prevalence of tarsal coalitions in Koreans.

• Journal of Korean Foot and Ankle Society
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• v.7 no.1
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• pp.41-46
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• 2003

Purpose: The purpose of this study was to evaluate the results of surgical treatments for tarsal coalitions. Materials and Methods: A retrospective study was conducted between October 1995 and September 2002. Four cases of talocalcaneal coalitions and two cases of calcaneonavicular coalitions were included. We did bone excision for three cases of talocalcaneal coalitions and two cases of calcaneonavicular coalitions. In one case of talocalcaneal coalition, we did subtalar fusion. Follow-up averaged 43 months. We evaluated both the patients' satisfaction rates by Mann and Reynolds scorring and compared the radiographic results between preoperative and final radiography. Results: The satisfaction outcomes at the last follow-up were two excellent and two good in talocalcaneal coalitions and all excellent in calcaneonavicular coalitions. Two cases of talocalcaneal coalition who did excision of coalition complained mild pain in hindfoot, however, symptoms improved than preoperation. In calcaneonavicular coalition, pain is subsided at mean post-operative 13 weeks. During follow-up period, there were no radiographic changes and recurrence in all cases. Conclusion: In small cases, we think the cause of subsidence of symptoms maybe reconstruction of normal joint motion after excision of tarsal coalition. But, we try to warn the patients with talocalcaneal coalition that the symptom may not be completely subsided after the excision of coalitions.

• Journal of the Korean Orthopaedic Association
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• v.55 no.4
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• pp.324-330
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• 2020

Purpose: Korean studies on the prevalence of a tarsal coalition are quite rare, and there are very few reports on the prevalence of multiple tarsal coalitions among adults in the foreign literature. Therefore, this study examined the characteristics and prevalence of tarsal coalition in the Korean population based on imaging tests. Materials and Methods: The prevalence of tarsal coalition and its anatomical location and histological classification were reviewed retrospectively among 4,711 patients (4,454 males and 257 females) with an ankle sprain or ankle fracture who underwent foot and ankle computed tomography and magnetic resonance imaging between March 2009 and February 2019 at the authors' institution. Results: Over a period of 10 years, 78 patients (1.7%) had a tarsal coalition, among whom 53 patients (67.9%) had an isolated tarsal coalition and 25 patients (32.1%) had multiple tarsal coalitions. Regarding the anatomical location, a talocalcaneal coalition was the most common type in both isolated (31 patients, 37 cases [62.7%]) and multiple (22 patients, 23 cases [45.1%]) tarsal coalitions. In the isolated coalition group, the second-most common type was calcaneonavicular coalition (10 patients, 16.9%), followed by naviculocuneiform (nine patients, 15.3%) and cuboidonavicular coalitions (three patients, 5.1%). In the multiple coalition group, the second-most common coalition type was calcaneonavicular coalition (14 patients, 14 cases [27.5%]), followed by talonavicular coalition (six patients, six cases [11.8%]). From a total of 60 cases of talocalcaneal coalition, 24 cases (40.0%) were in the posterior facet, 18 cases (30.0%) in the middle facet, and four cases (6.7%) in the anterior facet. Regarding the histological classification, cartilaginous coalition was the most common in both single (32 patients, 35 cases [59.3%]) and multiple (20 patients, 37 cases [72.5%]) coalition groups. Conclusion: The present study found that talocalcaneal coalition was the most common type of tarsal coalition. In contrast to previous reports that a talocalcaneal coalition generally occurs in the middle facet, it was usually observed in the posterior facet in the present study. In addition, although multiple tarsal coalitions have been reported to be quite rare, this study confirmed that they are not rare and can occur in a range of patterns.

• Journal of Korean Foot and Ankle Society
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• v.20 no.1
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• pp.36-38
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• 2016

Tarsal coalition is an abnormal union between two or more bones of the hind- and mid-feet, which can occur at various rates from cartilaginous to osseous union. Talonavicular coalition is reported less frequently than calcaneonavicular or talocalcaneal coalition and has been associated with various abnormalities, including symphalangism, clinodactyly, ray anomaly, clubfoot, other tarsal coalitions, and a ball-and-socket ankle joint. Patients with talonavicular coalitions are usually asymptomatic and rarely require surgical treatment. We review the literature and report on a case of 59-year-old male patient with talonavicular coalition.

• Journal of Korean Foot and Ankle Society
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• v.11 no.2
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• pp.187-191
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• 2007

Purpose: The authors intended to analyze the operative results of tarsal tunnel syndrome. Materials and Methods: Twenty-one patients with tarsal tunnel syndrome were followed for more than 1 year after operation. The mean age was 44 years, and the mean follow up period was 2 years and 9 months. Clinically preoperative and postoperative AOFAS ankle-hindfoot score and visual analogue scale for pain were analyzed. Radiologically the cause of disease was investigated, and the size of mass was measured, if possible. The duration of symptom, the presence of space occupying lesion (SOL), the effect of epineurolysis were statistically analyzed to see the relation with the operative results. Results: Operative release of tarsal tunnel was done in all cases, and epineurolysis was done in 11 cases. The causes of the disease were 10 soft tissue masses, 7 talocalcaneal coalitions, 1 nonunion of medial talar process fracture, and 1 pes planovalgus, and 3 idiopathic cases. The masses were subdivided into 7 ganglions, 2 neurilemmomas, and 1 lipoma. There was 1 case of combined talocalcaneal coalition and ganglion. Clinically AOFAS ankle-hindfoot score was increased from 62.7 points preoperatively to 84.3 points postoperatively. Visual analogue scale was improved from 6.5 preoperatively to 2.2 postoperatively. Two cases were graded as unsatisfactory. One was severe pes planovalgus, and the other was idiopathic case. The duration of symptom and the epineurolysis were not related with the results. However the presence of space occupying lesion was significantly related with the good results. Conclusion: Early operative release of tarsal tunnel appears to be important for the improvement of symptom. However the prognosis is limited in case that there is no SOL.

• Journal of Korean Foot and Ankle Society
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• v.15 no.3
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• pp.179-182
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• 2011

Naviculocuneiform coalition is one of uncommon tarsal coalitions and especially symptomatic cases which need operative treatment are rare. Authors report 2 cases of pediatric naviculocuneiform patients who showed symptomatic condition as mainly pain. Plain radiographs, computed tomography or magnetic resolution imaging study showed bony bridge in naviculo-medial cuneiform joint. After over six months conservative treatment, excision of coalition and interposition $Tisseel^{(R)}$ was performed for motion preservation and relief of pain.