• Journal of Korean Foot and Ankle Society
• /
• v.24 no.2
• /
• pp.61-68
• /
• 2020

Bone marrow aspirate concentrate and matrix-induced chondrogenesis (BMIC) is an interesting treatment option for osteochondral lesions of the talus with promising short- to mid-term results. The various terminologies used to describe this surgical method need to be addressed. These include bone marrow-derived cell transplantation, matrix-induced bone marrow aspirate concentrate, and matrix-associated stem cell transplantation. BMIC is a one-stage, minimally invasive surgery performed arthroscopically or using a mini-open arthrotomy approach without a malleolar osteotomy in most cases. The lesion is replaced with hyaline-like cartilage, and treatmentrelated complications are rare. BMIC is a safe and effective treatment option and should be considered in large lesions or lesions with a prior treatment history.

• Journal of Korean Foot and Ankle Society
• /
• v.24 no.2
• /
• pp.55-60
• /
• 2020

Among the various surgical treatment methods for osteochondral lesions of the talus, autologous osteochondral transplantation (AOT) is a useful procedure in cases of a large defect, subchondral cyst, and failed primary bone marrow stimulation procedure. Although bone marrow stimulation alone may not regenerate the damaged plate sufficiently, AOT has the advantage of being able to replace the subchondral bone plate and cartilage with a new one at a same time. Nevertheless, postoperative cyst formation or pain may persist and donor site morbidity is still a limitation of AOT.

• Journal of the Korean Arthroscopy Society
• /
• v.16 no.1
• /
• pp.52-55
• /
• 2012

An intraosseous ganglion typically exists in periarticular epiphysis or subchondral area, and is usually treated with open curettage of cyst or curettage and bone graft. We report a case of intraosseous ganglion of talus treated by endoscopic curettage and bone grafting with a review of the literature.

• Journal of Korean Foot and Ankle Society
• /
• v.15 no.4
• /
• pp.247-250
• /
• 2011

Talar fracture and total dislocation, each known as one of rare injuries mainly caused by high-energy trauma, tend to cause avascular necrosis, post-traumatic arthritis, non-union, skin necrosis and infection because of weak blood supply. The authors have experienced and reports a total talus dislocation of 16 year old male associated with medial malleoalr fracture, who showed relatively good result by early reduction and operation.

• Journal of the Korean earth science society
• /
• v.28 no.5
• /
• pp.598-602
• /
• 2007

A long-term in situ observation was carried out in the Ice-valley at Milyang in order to explain the factors and processes associated with the summertime ice formation. The variation of temperature inside Ice-valley in relation with ice formation in summer time was found to depend on precipitation rate in spring and cold air sinking in autumn and winter. The rate of temperature rising tends to correspond to sensible heat release depending on the precipitation amount at the freezing location. The reason of the cold air accumulation in a talus in the Ice-valley is the cold air sinking over the surface of talus due to the occurrence of outside clod air mass and the accumulated cold air from autumn to spring flow outside at the bottom of talus. The out-flowing cold air can result in the ice formation in the hot summer.

• Journal of Korean Foot and Ankle Society
• /
• v.12 no.2
• /
• pp.145-149
• /
• 2008

Purpose: The purpose of this study is to determine the results of conservative treatment of osteochondral lesion of talus (OLT). This study would be helpful to determine the treatment methods for OLT patients. Materials and Methods: We have established 69 cases of osteochondral lesion of talus, from December 2004 to June 2006 in a period of 18 months. Symptoms were confirmed through survey and a medical examination by interviewing patients. Diagnosis was made through physical examination, simple radiography and MRI. AOFAS score of all the patients were measured. When the patients did not get improved with conservative treatment, surgical operation was done. Results: 27 out of the 69 patients were treated using conservative treatment. Initial AOFAS scored was $66.37{\pm}8.89$ points. After treatment, AOFAS scores had increased to $83.78{\pm}8.48$ points. In cases of surgery, AOFAS scores had increased from $64.17{\pm}13.43$ points preoperatively to $80.45{\pm}8.67$ points. Conclusion: 60% of conservative treatment was useless in treating OLT patients. Surgical operation is still needed to be performed. Therefore, treatment should be done with sufficient understanding of the results.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
• /
• v.7 no.3
• /
• pp.148-156
• /
• 2002

The coastline of Hampyung Bay, southwestern coast of Korea, was examined and measured in the field for the understanding of geomorphic changes and sea-cliff erosion processes. The Hampyung-Bay coastline is characterized by steep-face slope and soft soil and/or intensively weathered rock composition. Saw teeth-shaped coastline, and relict weathered basement-rock and "Island Stack" exposed on the beach surface are peculiar geomorphic features indicating active sea-cliff erosion. The coastline in the study area is continuously retreating with the following cyclic process: erosion of cliff base, gravitational landslide or mass wasting, formation of talus, and then erosion and removal of talus. In this study, sea-level rise during summer in the west coast of Korea is suggested as one of the key factors fur the removal of soil taluses and, thereby, accelerating sea-cliff erosion.f erosion.

• Journal of Korean Foot and Ankle Society
• /
• v.10 no.2
• /
• pp.150-155
• /
• 2006

Purpose: The purpose of this study is to assess the results of the autologous osteochondral grafting harvested from medial side of talus for relatively large osteochondral lesion of the medial talar dome. Materials and Methods: From October 2004 to September 2005, 12 patients with osteochondral lesion measured more than 10 mm in axial MRI who were followed up more than 1 year after operation were analyzed. We evaluated postoperative symptoms by Mann and Reynolds scale, morbidity of donor site, and compared the range of both ankle motion. We also evaluated the union at the medial malleolar osteotomy site, trabecular connection between the grafted osteochondral mass and talus, irregularity of the articular surface in lesion. Results: Clinical results were rated as excellent in 4, good in 7, fair in 1. The mean angle of the total range of motion in affected ankle was decreased by 3 degrees compared to that in unaffected ankle. We did not observe abnormal findings at donor site. The osteotomized bone was united at mean 9 weeks (range, 8-12 weeks). We observed trabecular connection between grafted osteochondral mass and talus at mean 14 weeks (range, 12-16 weeks). We also observed irregular articular surface in osteochondral lesions in 6, smooth articular surface in 6. Conclusion: The local autologous osteochondral graft for relatively large osteochondral lesion of the medial talar dome is useful operative method with advantages of wide operative field, low morbidity of donor site, and high satisfaction rate.

• The Journal of Engineering Geology
• /
• v.17 no.3
• /
• pp.381-391
• /
• 2007

A series of talus slope stability analyses were carried out using 2D FEM and 3D limit equilibrium methods for this study. The FEM analyses on Phase 2 were performed to delineate failure depths based on stress distributions for each slope. The results revealed that the failure surface exist in the colluvium layer of about 3-10 m thickness. Three dimensional models, derived from the FEM analyses and geological field survey, were made for the use in a 3D limit equilibrium analysis. The result shows that all the talus slopes are stable under dry condition, but unstable under saturated condition due to heavy rain.

• Journal of Korean Foot and Ankle Society
• /
• v.6 no.2
• /
• pp.190-194
• /
• 2002

Purpose: We present our experience about the clinical aspect and treatment modalities of ostechondritis dissecans of the talus. Material and Method: This study included 35 patients, 38 cases diagnosed as ostechondritis dissecans of the talus that were proved by clinical and radiologic finding. The methods of treatment were conservative (2 cases), multiple drilling (1 case), excision (1 case), excision, curettage & multiple drilling (23 cases), curettage & bone peg fixation (2 cases), curettage & bone graft (2 cases), and autogenous osteochondral transfer(Mosaicplasty) (7 cases). Results: Of the 38 cases, 30 cases were associated with a history of trauma (17 cases of medial lesion, 13 cases of lateral lesion), and 9 cases of which had major trauma history and 21 cases, minor repetitive trauma history. According to O'Farrel grading system, 21 cases (55%) had good results, 11 cases (29%) had fair results, and 6 cases (16%) had poor results. Of the medial lesion 16 cases had good results, 6 cases, fair results, and 2 cases, poor results. Of the lateral lesion 5 cases had good results, 5 cases, fair results, and 4 cases, poor results. Conclusion: There were fair or good results in 84% of patients with surgical treatment. Curettage and multiple drilling reveals a good result in medial lesion in grade I, II, III and lateral lesion in grade I, II. Autogenous osteochondral transfer(Mosaicplasty) is considered for the cases in grade III, IV(medial and lateral), lesion exceeds 1Cm of size and poor result with another treatment modality.