• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 춘계학술대회
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• pp.141-144
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• 1997

Femoral neck anteversion is the angle between the neck and the knee axis projected on a plane perpendicular to the longitudinal axis. Conventional methods that use cross-sectional Computed Tomography(CT) images to estimate femoral anteversion have several problems because of the complex 3D structure of the femur. These are the ambiguity of defining the longitudinal axis, the femoral neck axis and condylar line, and the dependence on patient positioning. Especially the femoral neck axis that is known as a major source of error is hard to determine from a single or multiple 2D transverse images. So we developed a new method for measuring femoral anteversion by 3D modeling method. In this method, femoral head is modeled as a sphere. The center of femoral neck is the mid-point of the 2D reconstructed oblique image in the femoral neck part. Then neck axis is a line connecting foregoing two centers. We model the longitude of femur as a cylinder, and the long axis is defined from the fitted cylinder. The knee axis which is tangent to the back of the femoral condyles is easily determined by table-top method. By the definition of femoral anteversion, the femoral anteversion is easily calculated from this model.

• 척추신경추나의학회지
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• 제6권2호
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• pp.79-85
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• 2011

Objectives : The Purpose of this study is to investigate the clinical application of conservative treatment for femoral neck stress fracture developed in avascular necrosis of the femoral head. Methods : Patient is hospitalized at Dept. of Oriental Rehabilitation Medicine, Bu-Chun Jaseng Oriental Medicine Hospital, diagnosed as femoral neck stress fracture developed in avascular necrosis of the femoral head and treated by herbal medicine, acupuncture and moxibustion. This study was measured by Visual Analogue Scale(VAS) score, range of motion and walking time. Results : After conservative treatment, the patient's pain was controlled and VAS score was decreased. Range of motion and walking time were improved. Conclusions : As seen in this one case, Oriental conservative treatment has a positive effect to control pain with femoral neck stress fracture developed in avascular necrosis of the femoral head.

• Journal of Yeungnam Medical Science
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• 제40권2호
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• pp.212-217
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• 2023

We report a case of transient osteoporosis of the hip with a femoral neck fracture found during follow-up. A 53-year-old man presented with left hip pain without trauma. The pain did not improve after 2 weeks and he was brought to our hospital by ambulance. Magnetic resonance imaging (MRI) of the left hip joint showed diffuse edema in the bone marrow, which was identified by low signal intensity on T1-weighted images, high signal intensity on T2-weighted images, and increased signal intensity on short tau inversion recovery. This edema extended from the femoral head and neck to the intertrochanteric area. He was diagnosed with transient osteoporosis of the left hip. Rest gradually improved his pain; however, 3 weeks later, his left hip pain worsened without trauma. X-ray, computed tomography, and MRI results of the hip joint demonstrated a left femoral neck fracture, and osteosynthesis was performed. Differential diagnoses included avascular necrosis of the femoral head, infection, complex regional pain syndrome, rheumatoid arthritis, leukemia, and other cancers. Transient osteoporosis of the hip generally has a good prognosis with spontaneous remission within a few months to 1 year. However, a sufficient length of follow-up from condition onset to full recovery is necessary to avoid all probable complications such as fractures.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 추계학술대회 논문집
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• pp.518-521
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• 2005

We performed the mechanical test for obtaining properties of femoral head. Tested sample was male and 35 years old. We measured bone mineral density by dual X-ray absorption method(DEXA). Results of DEXA, he has normal condition of bone density. His BMD $1.159g/cm^2$ and T-Score is 1.6. Tested femurs were harvested by surgical method from donated cadaver. We made 9 specimens in femoral head, 8 specimens in neck used by diamond core drill. Then we performed compressive test in saline solution at $38^{\circ}C$. We obtained results that elastic modulus of femoral head was 0.439GPa, neck was 0.459GPa. Compressive strength of femoral head was 7.441 MPa, neck was 7.095MPa. There was no significant difference of mechanical properties between left and right femoral head & neck. Invested local properties of femoral head have more strength superior and anterior side, femoral neck has more strength in superior and inferior side but other side except for superior has more weakness along the lateral side.

• 농촌의학ㆍ지역보건
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• 제48권4호
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• pp.275-284
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• 2023

Objectives: This study aimed to assess hand grip strength and femoral neck bone mineral density levels among Korean fishery workers and investigate their association. Methods: Hand grip strength and femoral neck bone mineral density were measured in a survey and health examination conducted in 2021 among fishery workers in a southern region of South Korea. Covariates including gender, age, education level, income level, smoking behavior, drinking behavior, family history of hip fractures, use of calcium and vitamin D supplements, hypertension, diabetes, regular exercise, and body mass index were investigated. Multiple regression analysis was employed to assess the association between hand grip strength and femoral neck bone mineral density. Results: Among 147 fishery workers, 8.16% exhibited low hand grip strength levels indicative of possible sarcopenia, and a significant association was found between low hand grip strength and decreased femoral neck bone mineral density (β = -89.14, 95% CI = -160.50, -17.78). Additionally, factors such as women gender, advanced age, family history of hip fractures, and a body mass index below 25 kg/m² were associated with decreased femoral neck bone mineral density. In the subgroup analysis by gender, a correlation between low hand grip strength and decreased femoral neck bone mineral density was observed only in men. Conclusions: Further research is needed to explore various determinants and intervention strategies to prevent musculoskeletal disorders among fishery workers, ultimately enhancing their quality of life and well-being.

• 대한정형외과학회지
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• 제54권3호
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• pp.261-268
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• 2019

목적: 정상 한국 성인의 컴퓨터 단층촬영 영상으로 비구 전경사, 대퇴 경부 전경사 및 합산 전경사의 값을 구한 뒤 정상 범위와 남녀간의 차이, 좌우측의 차이 및 대퇴 경부 전경사와 비구 전경사와의 상관관계를 분석하고자 하였다. 대상 및 방법: 한국 정상 성인 중 21세에서 49세 범위 내의 남자 118명과 여자 114명의 컴퓨터 단층촬영 영상을 이용하여 좌우측의 비구 전경사, 대퇴 경부 전경사를 측정하고, 합산 전경사를 계산하여 각 측정값의 평균과 표준편차를 구하고 남녀 간의 차이, 좌우측의 차이가 있는지와 비구 전경사와 대퇴 경부 전경사 간의 상관관계를 통계적으로 분석하였다. 결과: 비구의 전경사는 남자에서 우측 15.3±6.1도, 좌측 15.3±6.6도, 대퇴 경부 전경사는 Hernandez 등의 방법으로 측정한 경우 우측 5.3±7.6도, 좌측 1.5±9.2도였으며 여자에서 비구 전경사는 우측 16.8±5.4도, 좌측 16.3±5.8도, 대퇴 경부 전경사는 Hernandez 등의 방법으로 측정한 경우 우측 10.3±8.2도, 좌측 7.9±8.2도였다. 남녀 간의 차이분석 시 좌우측 모두 비구 전경사는 통계적으로 차이가 없었으며 대퇴 경부 전경사는 좌우측 모두 통계적으로 의미있는 차이가 있었다. 좌측과 우측을 비교하였을 때 비구 전경사는 차이가 없었으며 대퇴 경부 전경사는 Hernandez 등의 측정법이나 Weiner 등의 측정법 모두 좌우측 간에 통계적으로 차이가 있는 것으로 나타났다. 대퇴 경부 전경사와 비구 전경사 간의 상관관계를 보기 위하여 피어슨 상관계수를 구하였으며 그 결과 상관관계가 없는 것으로 나타났다. 결론: 남녀 간의 비구 전경사는 통계적인 차이가 없었고 대퇴 경부 전경사는 차이가 있었다. 개인별로는 좌우측 간에 대퇴 경부 전경사가 의미 있는 차이가 있었고 비구 전경사는 차이가 없었다. 대퇴 경부 전경사와 비구 전경사 간에는 상관관계가 없었다.

• 한국임상수의학회지
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• 제20권1호
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• pp.104-109
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• 2003

This study was performed to evaluate the postoperative heating process according to lameness degree, swelling, and muscle atrophy after femoral head and neck ostectomy on Retriever dogs with hip dysplasia and hindleg lameness. Femoral head and neck ostectomy (FHO) was performed for the repair of hip dysplasia in 4 Retriever dogs (5 hips) referred in veterinary medical teaching hospital of college of veterinary medicine, Konkuk University. Age (Mean $\pm$ SD) of patients was 10.3 $\pm$ 3.0 months (range,7 to 16 months) and body weight (Mean $\pm$ SD) was 28.2 $\pm$ 3.4 kg (range, 25 to 34 kg). After FHO, all cases are treated with carprofen (2.2 mg/kg, PO bid, tapering at interval 1-2 weeks) and physical therapy including passive range-of-motion exercises. In all cases, lameness degree was showed V at the next day after surgery, IV at 5 to 7 days, II-III at 30 to 35 days, II at 60 days, and I at 105 to 114 days. These results suggested that femoral head and neck ostectomy was able to be performed on large breed dogs with hip dysplasia and hindleg lameness.

• Journal of Nutrition and Health
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• 제33권3호
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• pp.241-249
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• 2000

The bone mineral density(vertebrae Ll-4, femoral neck, Ward's triangle and trochanter) of 160 healthy adult women aged 29-45 was measured and general characteristics, anthropomentric measurements, and dietary intake were also studied to determine the main factors affecting the bone mineral density(BMD) of adult women. The nutrient intake of the subjects was adequate to RDA level except energy, Ca, Fe, and vit A. The BMD of vertebrae L24 showed significant positive association with nutrient intake such as animal protein, P, Ca(animal) and Fe(animal). The BMD of the femoral neck correlated significantly with anthropometric measurements such as height, weight, waist circumference, hip circumference, body fat and body mass index. The BMD of both sites(vertebrae L24 and femoral neck) were significantly related to vertebrae L24 was daily Ca intake and that of femoral neck was daily energy expenditure. In conclusion, adequate nutrient intake, especially protein, P, Ca and Fe as well as increases in physical activity were suggested to prevent the loss of bone mineral density in adult women.

• Imaging Science in Dentistry
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• 제31권2호
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• pp.67-71
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• 2001

Purpose: To assess the possibility of using panoramic indices as an indicator of jaw osteoporosis. Methods: Mandibular cortical width (MCW), degree of mandibular alveolar bone resorption (ABR) and morphology of mandibular inferior cortex (MIC) on panoramic radiograph were used as panoramic indices. These panoramic indices were compared with bone mineral density (BMD) of lumbar (L1-L4) and femoral neck measured by dual energy X-ray absorptiometry. We also compared MCW and ABR of young men with those of postmenopausal women. Results : There was a significant correlation between ABR and BMD of lumbar and femoral neck. And also significant correlation between MIC and BMD of lumbar and femoral neck. ANOVA test of BMD of lumbar and femoral neck showed significant differences according to morphologic classification of inferior cortex. There was significant difference in MCW and ABR between young men and postmenopausal women. Conclusion: Our results suggested that ABR and MIC on panoramic radiograph could be reliable in screening of osteoporosis.

• 비파괴검사학회지
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• 제31권5호
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• pp.459-465
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• 2011

대퇴골 근위부의 기하학적 형상은 대퇴골 경부 골절과 중요한 상관관계를 가지고 있는 것으로 보고되고 있다. 기존의 연구에서는 인장실험법과 유한요소해석법을 이용하여 상관관계를 분석해왔다. 그러나 이 방법들은 인체의 미리 정의된 대퇴골 형상을 변경할 수 없고, 다수의 시험편들을 확보하기 어렵기 때문에 다양한 시험편과 모델을 적용할 수 없다는 한계가 있다. 따라서 본 연구에서는 대퇴골 골절 해석에 폭넓게 사용할 수 있도록 매개변수로 기하학적 형상 변형이 가능한 대퇴골 모델을 이용하여 대퇴골 골절과 형상 매개변수의 관계를 분석하였다. 이 관계를 분석하기 위하여 4가지 주요 매개변수(대퇴골두 직경, 대퇴경부 직경, 대퇴경두간 길이, 대퇴경간각)를 이용하여 다양한 해석 모델을 생성하여 유한요소해석을 수행하였다. 이 후 대퇴골두에서의 반력(reaction force)과 경부에서의 응력 분포(stress distribution)를 분석함으로써 유한요 소해석을 수행하였고, 대퇴경부 직경이 대퇴골 경부 골절에 가장 큰 영향을 미치고 대퇴골두 직경이 가장 작은 영향을 미치는 결과가 나타났다.