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김광균 대한골다공증학회 2014 Osteoporosis and Sarcopenia Vol.12 No.2
There are numerous reports of fractures associated with total knee arthroplasty. But, to our knowledge, isolated posterior malleolus fracture associated with TKR has not previously been reported. Here, we report a case of isolated posterior malleolar fracture that occurred with total knee arthroplasty. The patient was informed that data concerning the case would be submitted for publication
Focal Myositis around Hip Joint: 3 Cases Report
김광균,유현진 대한고관절학회 2014 Hip and Pelvis Vol.26 No.3
Focal myositis, a benign myositis which mostly occurs at lower extremity, is a disease that is spontaneouslyimproved by conservative treatments such as bed rest and administration of nonsteroidal anti-inflammatory drug. Focal myositis is known to occur mostly at lower extremity, but we could not find a report of occurrence aroundhip. Therefore, authors attempt to report clinical progression along with the literature review.
김광균,Myoung-Hyun Baek,Ye-YeonWon 대한골다공증학회 2012 Osteoporosis and Sarcopenia Vol.10 No.2
Objectives: The purpose of this study is to analyze and compare the micro-structural and mechanical properties of subchondral trabecular bone of non-osteoarthritic and osteoarthritic distal femur using micro-images based on finite element analysis. Materials and Methods: Twenty distal femurs were harvested from 10 cadavers. The subchondral trabeculae were obtained from the middle of the articular surface of the medial femoral condyle of distal femurs. A total of 20 specimens were scanned using the micro-CT system. Micro-CT images were converted to micro-finite element model using the mesh technique, and micro-finite element analysis was then performed for assessment of the mechanical properties. Results: According to the results, trabecular bone of osteoarthritic distal femur showed a decrease in trabecular thickness, bone volume fraction, structure model index, and yield stress and an increase in trabecular separation and structure model index. Conclusions: Results of bone morphometry index and strength showed greater deterioration of microstructure and decreased mechanical strength in subchondral trabeculae of the osteoarthritic group.
골다공증성 불안정 대퇴골 전자간 골절에서 내고정물의 종류에 따른 방사선학적 결과 비교
김광균,원예연,이우석,조인호 대한골다공증학회 2013 Osteoporosis and Sarcopenia Vol.11 No.1
Objectives: To determine whether kinds of implants would influence on the radiologic outcomes in the treatment of unstable osteoporotic intertrochanteric fractures. Materials and Methods: In this retrospective study, radiologic outcomes of 151 patients with unstable osteoporotic intertrochanteric fractures undergoing surgical treatments were compared based on the types of fixation implants as follows : PFNA (53 cases, group Ⅰ), gamma nail 3(31 cases, group Ⅱ), CHS with TSP (43 cases, group Ⅲ), and helical blade type LCP-DHS with TSP (24 cases, group Ⅳ). On the follow-up radiographs after operations, we assessed differences of bone union durations, neck-shaft ankle changes, lag screw or helical blade slippages, and varus alpha angle changes among the study groups. Results: All the radiologic outcomes evaluated in this study were not significantly different among the study groups. The average bone union durations of the group Ⅰ, Ⅱ, Ⅲ and Ⅳ were 17.7, 18.0, 18.2, and 17.8 weeks, respectively (P=0.429). The average variation of neck-shaft angle of the group Ⅰ, Ⅱ, Ⅲ and Ⅳ were 3.6o, 3.1o, 3.7o and 2.9o, respectively (P=0.273). The average lag screw or blade slippage of the group Ⅰ, Ⅱ, Ⅲ and Ⅳ were 5.1 mm, 3.3 mm, 3.6 mm and 2.7 mm, respectively (P=0.154). The average variation of varus alpha of the group Ⅰ, Ⅱ, Ⅲ and Ⅳ were 5.3o, 4.7o, 4.1o and 4.6º, respectively (P=0.894). Conclusions: This study indicates that four typical types of fixation implants for treating unstable osteoporotic intertrochanteric fractures would not lead to differences in postoperative radiological outcomes.
Acute Gluteal Compartment Syndrome without Gluteal Hematoma -A Case Report -
김광균,원예연,이정범,김도연,인호,이진웅 대한고관절학회 2012 Hip and Pelvis Vol.24 No.2
Acute gluteal compartment syndrome (AGCS) is a rare condition associated with trauma, drug abuse, alcohol intoxication, prolonged immobilization, hip arthroplasty and epidural anesthesia. We report the case of a 42-yearold woman presenting severe buttock pain following decreased lower extremity motor function after an incident whereby she rolled down a flight of stairs. We performed fasciotomy of the gluteal fascia in order to provide relief from acute gluteal compartment syndrome. At the 2 month follow up visit her sensory and motor function had improved. Acute gluteal compartment syndrome is a rare condition which can result in misdiagnosis or delayed diagnosis. Careful consideration is needed for patients suffering severe buttock pain.
김광균,Jungsung Kim,이도경,Sohui Lim,Jiyoon Eom 대한슬관절학회 2019 대한슬관절학회지 Vol.31 No.1
Purpose: The aim of this study is to assess the accuracy of alignment determined by patientspecific instrumentation system in total knee arthroplasty (TKA).Materials and Methods: Twentyseven TKAs using patientspecific instrument were reviewed. The intraoperative pin location determined by the patientspecific guide was recorded using imageless navigation software. Data recorded included tibial coronal alignment and posterior slope, femoral coronal alignment and sagittal alignment, and transepicondylar axis. A discrepancy within ±3° in each plane was considered an acceptable result. Results: On the tibia, an acceptable alignment was obtained in 24 (88.1%) in the coronal plane and 21 (77.8%) in the sagittal plane. On the femur, a satisfactory alignment was obtained in 25 (92.6%) in the coronal plane and 24 (88.1%) in the sagittal plane. Based on the transepicondylar axis, a satisfactory alignment was obtained in 23 (85.1%).Conclusions: Satisfactory alignment was obtained in more than 85% of each plane of the femur and in the coronal plane of the tibia and relative to the transepicondylar axis. Sufficeint experience and precise preoperative planning are required to improve the accuracy of sagittal alignment of the tibia.