• Journal of Korean Foot and Ankle Society
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• v.18 no.2
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• pp.76-79
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• 2014

In treatment of failure in ankle joint replacement therapy, talar avascular necrosis with massive bone defect, talus fracture with severe comminution and bone defect and ankle dislocation, treatment of large bone defects is considerably important for ankle joint stability and union, therefore, the choice of treatment for large bone defects is use of femoral head or iliac crest bone graft and rigid internal fixation. Because first generation total ankle arthroplasty performed for the first time using a cemented fixation technique requires a large amount of bone resection during re-surgery and there is some possibility of a larger bone defect after removal of implants, in cases where prosthesis for the defect is needed, performance of palliative femoral head or iliac crest bone graft and rigid internal fixation can be difficult. We report on a case of a 48-year-old woman who had experienced ankle pain for 25 years since undergoing total ankle arthroplasty. Because the patient had little ankle motion and rigid soft tissue despite a large bone defect caused by aseptic loosening, a good outcome was obtained only for the femoral cancellous bone graft using allo femoral head without internal fixation.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.24 no.3
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• pp.209-218
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• 2017

Purpose: The purpose of this research was to identify factors that influence health-related quality of life of patients who have had knee or hip arthroplasty. Factors included sleep disorders, pain, activities of daily living, and depression. Methods: The participants in this research were 97 patients within one year after receiving knee or hip arthroplasty surgery and who regularly visited a hospital outpatient department. Data were analyzed using descriptive statistics, t-test, ANOVA, and stepwise regression analysis with the SPSS program. Results: Sleep disorders, pain, activities of daily living, and depression had significant correlations with health related quality of life. Factors influencing health-related quality of life among arthroplasty patients were the length of time since surgery, sleep disorders, activities of daily living, and depression. These factors explained 58% of the participants' health-related quality of life. Conclusion: The results show that various factors can affect patients' health-related quality of life following joint replacement surgery. The findings indicate that sleep disorders and depression should receive continued attention after the arthroplasty. It is also necessary to develop appropriate nursing intervention programs to lower depression and increase patient participation in daily living activities.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.28 no.11
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• pp.1664-1671
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• 2004

It is necessary to have a model that describes the feature of the knee Joint with a sufficient accuracy. Koreans, however, do not have their own knee joint model to be used in the total knee replacement arthroplasty. They have to use European or American models which do not match Koreans. Three-dimensional visualization techniques are found to be useful in a wide range of medical applications. Three-dimensional imaging studies such as CT(computed tomography) and MRI(magnetic resonance image) provide the primary source of patient-specific data. Three-dimensional knee joint models were constructed by image processing of the CT data of 10 subjects. Using the constructed model, the dimensions of Korean knee joint were measured. And this study proposed a three-dimensional model and data, which can be helpful to develop Korean knee implants and to analyze knee joint movements.

• Journal of Korean Foot and Ankle Society
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• v.14 no.1
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• pp.47-52
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• 2010

Purpose: We report the clinical and radiographic result of ligament reconstruction using plantaris and total ankle replacement in end-stage ankle arthritis with ankle instability. Materials and Methods: The study is based on the 9 cases among total 48 patients of end-stage ankle arthritis that were treated with total ankle prosthesis and ligament reconstruction from 2007 to 2009 at least 12 months follow-up. We evaluated the VAS (Visual analogue scale) pain score, AOFAS (American orthopedic foot and ankle society) score and radiographic measurements. Results: Average age was 59.4 years (53~67 years) old. VAS pain score improved from preoperative average $8.2{\pm}0.9$ (range, 7~10) to $2.7{\pm}1.7$ (range, 0~6) and the AOFAS score improved from $46.4{\pm}14.6$ points (range, 23~69) to $80.1{\pm}9.3$ points (range, 65~95) at final follow-up. Anterior draw test improved $15.2{\pm}3.4$ mm (range, 12~23 mm) to $8.8{\pm}2.6$ mm (range, 6~13mm), varus stress test improved from $13.9{\pm}4.6^{\circ}$ (range, $10-18^{\circ}$) to $6.2{\pm}4.7^{\circ}$ (range, $2-18^{\circ}$) at final follow up. Conclusion: Plantaris ligament reconstruction is good option as part of the management of ankle instability with end-stage ankle arthritis. We achieved good clinical and radiographic results.

• Clinics in Shoulder and Elbow
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• v.12 no.2
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• pp.255-263
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• 2009

Purpose: An osseous defect in the glenoid and humeral head is closely associated with recurrence of anterior shoulder instability. The purpose of this article is to describe the open surgical techniques and introduce our experiences with anterior instability with a significant osseous defect. Materials and Methods: We reviewed the articles that have focused on and/or mentioned the affect of osseous defects on anterior shoulder instability. The open surgical techniques and its related pearls are summarized in this review. Results: Accurate evaluation for the size and location of the osseous defect is critical for preventing recurrence after restoration of the anterior capsulolabral structure. The glenoid bone restoration techniques include the coracoids transfer (the Bristow procedure and the Latarjet procedure) and a structural iliac bone graft. Rotational humeral osteotomy and an osteoarticular allograft could be used for repairing a significant posterosuperior humeral defect (Hill-Sachs lesion). Shoulder arthroplasty may be tried for treating a humeral bone defect, but more study on this is needed. Conclusion: Open surgical restoration decreases the risk of recurrence anterior shoulder instability that is combined with a significant osseous defect. Arthroscopic surgery currently has limitations for treating an osseous defect, but it will become useful in proportion to the development of arthroscopic instruments and techniques in the future.

• Clinics in Shoulder and Elbow
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• v.13 no.2
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• pp.293-298
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• 2010

Purpose: Since an injured elbow joint can disturb the activity of daily life by limiting motion, especially if the motion is restricted over 40 degree of flexion contracture and under 105 degree of further flexion, it is imperative to select the best method and the timing of treatment of the elbow stiffness. Therefore this review will discuss open surgical techniques for stiff elbows based on the literature. Materials and Methods: It is important to take sufficient clinical examination of the patient, including history taking. And, a surgeon should select appropriate procedure after accurately understanding about the status and cause of the stiff elbow with radiographic methods. Surgical methods include arthroscopic release open release, distraction arthroplasty, total elbow replacement and there are four approachs in the open release - anterior approach, medial "over the top" approach, limited lateral approach: column procedure, posterior extensile approach-. Results and Conclusion: Although at present the arthroscopic technique is emphasized for the treatment of elbow stiffness, a surgeon should know conventional open techniques.

• Journal of the Korean Orthopaedic Association
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• v.54 no.3
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• pp.244-253
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• 2019

Purpose: Total hip arthroplasty was performed using a direct anterior approach (DAA) on an ordinary operation table and a short femoral stem. The clinical radiographic results were evaluated by a comparison with those performed using the modified hardinge (anterolateral approach, ALA) method. Materials and Methods: From January 2013 to November 2015, 102 patients who underwent total hip arthroplasty using DAA (DAA group) and the same number of patients using ALA (ALA group), both performed by a single surgeon, were compared and analyzed retrospectively. The operation time and amounts of bleeding were compared, and the improvement in post-operative pain, ambulatory capacity and functional recovery of the hip joint were checked. The location of insertion of the acetabular cup and femoral stem were evaluated radiologically, and the complications that occurred in the two groups were investigated. Results: The amount of bleeding was significantly smaller in the DAA group (p=0.018). Up to 3 weeks postoperatively, recovery of hip muscle strength was significantly higher in the DAA group (flexion/extension strength p=0.023, abduction strength p=0.031). The Harris hip score was significantly better in the DAA group for up to 3 months (p<0.001) and the Koval score showed significantly better results in the DAA group up to 6 weeks (p≤0.001). The visual analogue scale score improvement was significantly higher in the DAA group by day 7 (p=0.035). The inclination angle (p<0.001) and anteversion angle (p<0.001) of the acetabular cup were located in the safe zone of the DAA group more than in the ALA group, and there was no statistically significant difference in the position of the femur stem and leg length difference. During surgery, two cases of greater trochanter fracture occurred in the DAA group (p=0.155). Conclusion: The DAA performed in the ordinary operation table using a short femoral stem showed post-operative early functional recovery. Because a simple to use fluoroscope was used during surgery with an anatomical position familiar to the surgeon, it is considered to be useful for the insertion of implants into the desired position and for an approach that is useful for the prevention of leg length differences.

• Journal of Korean Foot and Ankle Society
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• v.10 no.1
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• pp.92-95
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• 2006

Purpose: Ankle fusion that is operated on severe ankle arthritis has its weakness in that normal walking is impossible, even though the result is pretty good. As a alternative choice, total ankle replacement pursues the longer survivorship with material improvement. However, it is not yet known how much range of motion is possible after the replacement, or how it has changed overtime. Therefore, we need an analyzation for that. Materials and Methods: A retrospective review of sixty-seven patients undergoing STAR total ankle replacement at our institution between 1998 and 2002 was conducted. Of those, twenty-six (39%) had complete sets of full dorsiflexion and plantar flexion lateral radiographs both between "immediate" postop and at a minimum of 2-years follow-up and no revision procedure during that time. The mean age of these patients was 63.2 years when the surgery was done; the etiology of arthrosis was 21(81%) post-traumatic/degenerative, 4 rheumatoid and 1 psoriatic. Results: Average "immediate" ankle range of motion was $15.9^{\circ}$, and total foot (non-ankle) motion was $20.6^{\circ}$. At one, two, and three years the average ankle and total foot ranges of motion were $17.4^{\circ}$, $17.6^{\circ}$, $15.6^{\circ}$ and $21.0^{\circ}$, $22.0^{\circ}$, $21.2^{\circ}$ respectively. Statistically there was no significant difference between "immediate" postop motion and one to three years postop (all p>0.05). Conclusion: The range of motion after the STAR total ankle replacement is maintained from the "immediate" postoperative range of motion, but not increased, in the 1-3 year post replacement period.

• Journal of Korean Foot and Ankle Society
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• v.11 no.2
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• pp.135-140
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• 2007

Purpose: To evaluate the incidence and describe radiologic pattern of ankle arthritis following change of mechanical loading axis by total knee arthroplasty. Materials and Methods: We reviewed radiographs of 419 cases, 243 patients underwent total knee arthroplasy from January 2002 to October 2006 retrospectively. We described radiologic parameters around the ankle joint and measured the amount of change of knee varus or valgus angle by comparing preoperative and postoperative anteroposterior standing lower extremities AP X-rays. We divided cases into two groups, one with radiologically arthritic change of the ankle joint and the other one without any radiologic change after surgery. We compared two groups in each parameters and analyzed statistically (SPSS v13.0). Results: Three hundred eighty one cases were divided into varus group and 38 cases in valgus group. 125 cases were divided into ankle arthritic change-positive subgroup among the varus group and 251 cases were in negative subgroup. The amount of varus angle correction by total knee arthroplasty showed significant difference between two subgroups. There was no significant difference in each parameters between subgroups within 38 valgus cases. Conclusion: Ankle arthritis can be aggravated after total knee arthroplasty because of the change of mechanical loading axis onto the ankle joint. Therefore it may be needed to evaluate symptoms and function of ankle joints before performing total knee arthroplasties especially in patients with huge varus deformities of knee joints.

• Journal of Korean Foot and Ankle Society
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• v.20 no.1
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• pp.19-22
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• 2016

Purpose: We compared the results of total ankle arthroplasty in patients with preoperative varus deformity of more than $20^{\circ}$ with those of patients with varus deformity less than $20^{\circ}$. Materials and Methods: From January 2005 to January 2013, 9 ankles with preoperative varus deformity of more than $20^{\circ}$ (varus group) and 31 ankles with varus deformity less than $20^{\circ}$ (control group) underwent total ankle arthroplasty. Clinical results were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) score, and radiographic results were assessed using tibiotalar varus angle in standing anteroposterior radiographs taken preoperatively and at the last follow-up. Results: The mean duration of clinical follow-up was 42.8 months (14~60 months). The AOFAS score was improved by a mean 47.0 points in the varus group and 37.6 points in the control group. Statistically significant difference was observed between the two groups (p=0.041). Tibiotalar varus angle measured at the last follow-up radiograph was $2.5^{\circ}$ in the varus group and $1.0^{\circ}$ in the control group and the difference was not statistically significant (p=0.820). Conclusion: Satisfactory clinical and radiographic results can be achieved in patients with varus deformity more than $20^{\circ}$ by precise bone resection and soft tissue release.