• Hip & pelvis
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• 제36권3호
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• pp.187-195
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• 2024

Purpose: Pelvis tilting in sagittal plane influences the acetabular cup position. Majority of total hip arthroplasty (THA) are performed in lateral decubitus surgical position. This study is to assess whether there is any difference in sacral slope between standing and lateral decubitus position and influence of this variation in planning acetabular cup anteversion. Materials and Methods: This is a prospective study including 50 patients operated between January 2020 to March 2022. Preoperative radiograph included lumbosacral spine lateral X-ray in standing, supine and lateral decubitus positions to calculate the sacral slope for assessment of anterior or posterior pelvic tilting. In our study, we determined the position of the acetabular cup based on changes in sacral slope between standing and lateral decubitus postures. For patients whose sacral slope increased from lateral decubitus to standing, we implanted the acetabular component with a higher degree of anteversion. Conversely, for patients with reverse phenomenon, the cup was inserted at lower anteversion. Results: Twenty-four patients (48.0%) had increase in sacral slope from lateral decubitus to standing whereas 26 patients (52.0%) had decrease in sacral slope. There was linear correlation between difference in preoperative sacral slope and postoperative cross table lateral cup anteversion. Harris hip scores improved from 40.78 to 85.43. There was no subluxation or dislocation in any patient at minimum 2-year follow-up. Conclusion: Individualized acetabular cup placement is important for better functional outcome in THA. Evaluation of pelvic tilting in lateral decubitus position is necessary for better positioning of acetabular cup and avoid postoperative complications.

• 한국콘텐츠학회논문지
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• 제15권1호
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• pp.316-323
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• 2015

본 연구는 디지털 흉부 측와위 후전방향 검사 시 Ion chamber 설정과 관전압 변화에 따른 피폭선량과 변조전달함수를 측정하여 최적의 진단 영상을 획득하고 환자의 피폭선량을 최소화하는 방안에 대하여 제안하고자 하였다. 실험은 디지털 검출기를 이용하여 흉부 측와위 검사법 중 우측 측와위 상태를 가정하여 Ion chamber를 7가지 조합으로 설정하고, 관전압 변화(100, 110, 120, 130 kVp)에 따라 각 5회씩 촬영하여 표면선량을 측정한 후 평균값을 산출하였다. 실험에서 얻어진 표면선량 값을 몬테카를로 시뮬레이션 프로그램 인 PCXMC에 입력하여 장기선량 및 유효선량을 각각 산출하였고, 영상의 화질을 비교하기 위하여 MTF로 물리적 화질 평가를 하였다. 그 결과 관전압이 높을수록 표면선량이 감소하였으며, Ion chamber 변화에 따른 장기선량과 유효선량은 2번 Ion chamber 설정 시 가장 낮게 나타났으며, 1번 Ion chamber 설정 시 가장 높게 나타났다. MTF 결과는 관전압 120 kVp, 2번 Ion chamber를 설정 시 가장 우수하게 나타났다. 따라서 DR을 이용한 흉부 우측 측와위 촬영 시 화질의 저하 없이 피폭선량을 효과적으로 감소시키며 우수한 영상을 획득할 수 있는 최적의 조합은 관전압 120 kVp와 2번 Ion chamber를 설정하는 것이다.

• 척추신경추나의학회지
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• 제1권2호
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• pp.125-135
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• 2006

Objectives: The purpose of this study was to investigate the relationship among lumbar lordotic and obesity in Low Back Pain Patient Methods: The subjects of this study were patients with low back pain who visited Jung-Dong Oriental Hospital. X-ray were taken in lateral decubitus. The measurements of the Ferguson angles(FA) and the lumbar lordotic angles(LLA) were performed. We measured BMI and WHR has been accessed bio-impedance analyzer(inbody 3.0). This results were statistically analyzed using SPSS 12.0. Results 1. In female group. FA and LLA were significantly higher than male group. 2. LLA was shown to decrease to rise with increasing WHR and BMI 3. FA had no realtion with WHR and BMI Conclusions: This data shows that obesity related to mechanical structures such as lumbar curvature. Obesity can be a one of the stressor of lumbar spine, and one of the causing factor of low back pain.

• 성인간호학회지
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• 제12권1호
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• pp.122-133
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• 2000

The purpose of this study was to identify the effect of body positioning on $PaO_2$, $SpO_2$, systolic blood pressure, diastolic blood pressure, pulse, and respiration(above all defined physiologic index), of patients with unilateral lung disease. The subjects for this study were eleven patients admitted to I.C.U. of K.H.M.C. with a diagnosis of unilateral lung disease confirmed by chest X-ray and the attending doctor, from January 30th. to April 20th. 1999. A quasi-experimental repeated-measures cross-over design was used to compare three body positions(semi-Fowler's, lateral decubitus with good lung dependent, and lateral decubitus with diseased lung dependent). Each subject spent 30 minutes in semi-Fowler's position and 2 hours in good lung dependent position and diseased lung dependent position. Starting in the semi-Fowler's position, then in the lateral position with the good lung dependent or the diseased lung dependent as assigned in random order. Thirty minutes after each positioning, arterial blood sample was analyzed. Measurements of all physiologic index were recorded at the specified intervals(0, 30, 60 90, and 120 minutes) in good lung dependent and diseased lung dependent position. Statistical comparison of $PaO_2$ value was done using the Wilcoxon Signed Rank Test, and Multivariate repeated-measures analysis of variance was performed to analyse the within-subject effect of two dependent position for 2 hours on the five dependent variables: (1) $PaO_2$ (2) $SpO_2$ (3) systolic blood pressure (4) diastolic blood pressure (5) pulse. The results obtained were as follows: 1. The $PaO_2$ value in the good lung dependent position was significantly higher than the $PaO_2$ value in the diseased lung dependent position(Z=-2.8451, p=.002). 2. The $PaO_2$ value in the good lung dependent position was significantly higher than the $PaO_2$ value in the semi-Fowler's position (Z=-2.6673, p=.003). 3. The difference between the $PaO_2$ value in the semi-Fowler's position and the $PaO_2$ value in the diseased lung dependent position was not significant(Z=-1.2448, p=.10). 4. There were no statistically significance in the trends of physiologic index in the good lung dependent position and the diseased lung dependent position. From the results, it may be concluded that the good lung dependent position is the most effective position for patients with unilateral lung disease that improve oxygenation. Identification of positioning over time may be need further studies.

• 척추신경추나의학회지
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• 제3권2호
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• pp.69-76
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• 2008

Objectives : The purpose of this study is to investigate the relationship among low back pain, lumbar lordosis, obesity and Sasang constitution. Methods : The researcher discriminated the Sasang constitutions of those observed-the inpatient-who were treated from March to May 2008 for low back pain. X-ray were taken in lateral decubitus and the lumbar lordotic angles(LLA) were measured. BMI were measured. This results were statistically analyzed using SPSS 12.0. Results : 1. Among the 31 subjects, distributional rate of Soyangin, Taeumin, and Soeumin were 48.4%, 29.0% and 22.6%. 2. The result showed a significant difference with the Sasang constitution from $\ll$Dongy Suse Bowqn$\gg$. 3. The result showed a difference with the Sasang constitution from the existing result from OSCC II. 4. There was no significant relations between each constitutions and lumbar lordotic angle. 5. There was significant relations between each constitutions and BMI. Conclusions : In this study, The rate of Soyangin, among the low back pain patients, was higher. And the average of BMI was higher in Taeumin.