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- 주제어 : Radiological parameter (검색결과 9 건)
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Jeong-Min Park,임군일 대한정형외과학회 2011 Clinics in Orthopedic Surgery Vol.3 No.2
Background: The aim of this study was to answer the following two questions: 1) Do the radiological parameters of dysplasia have significant correlations between themselves or with the parameters of the proximal femoral deformity and vice versa? 2) Do the physical parameters have a significant correlation with the radiological parameters of hip dysplasia and proximal femoral deformity?Methods: Four hundred and twenty eight consecutive patients with no clinical evidence of hip osteoarthritis and who underwent pelvic radiography in the supine position for hip contusion or a routine health check were analyzed for the relationships between the center-edge (CE) angle, acetabular depth, acetabular angle, the head-neck ratio and the neck-shaft angle as well as the relationships of the above-mentioned variables with age, gender, body height and the body mass index. Results: The CE angle, acetabular depth and acetabular angle showed a strong correlation with each other. The neck-shaft angle and the head-neck ratio showed no correlation with each other or with the CE angle, acetabular depth and acetabular angle. Age was positively associated with the CE angle, and inversely associated with the acetabular depth or acetabular angle. Male gender was significantly associated with the increased neck-shaft angle, and inversely associated with the head-neck ratio. Conclusions: The radiological parameters of hip dysplasia are all strongly, if not perfectly, inter-correlated. Age was associated with the radiological parameters of hip dysplasia whereas gender was associated with the radiological parameters of a proximal femoral deformity.
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( Jatin Prakash ),( Jong-keun Seon ),( Seong-hwan Woo ),( Cheng Jin ),( Eun-kyoo Song ) 대한슬관절학회 2016 대한슬관절학회지 Vol.28 No.4
Purpose: Patellofemoral instability is a common cause of anterior knee pain in adolescents and young adults. Most normal and pathological values for diagnosing patellofemoral instability are based on Western literature. We conducted this radiological study to determine normal values for different patellofemoral parameters in a Korean population and to evaluate their usefulness in diagnosis. Materials and Methods: We retrospectively reviewed the rotational profile computerized tomography (CT) scans of the patellar dislocation and control groups. Trochlear, patellar, rotational profile, and trochleo-patellar alignment parameters were compared between the groups. Receiver operating characteristic curves were drawn for significant parameters, and sensitivity and specificity were calculated for the cut-off values. Results: There were 48 patients in the patellar dislocation group and 87 patients in the control group. In the control group and patellar dislocation group, the mean sulcus angle was 132.5° and 143.3°, respectively, trochlear depth was 6.04 mm and 3.6 mm, bisect offset was 56.4% and 99.9%, lateral patellar tilting was 9.8° and 19.2°, patellar facet asymmetry was 63.5% and 45.16%, and the tibial tuberosity-trochlear groove (TT-TG) distance was 10.91 mm and 27.16 mm, respectively. Conclusions: The trochlear depth, bisect offset, patella tilting, and TT-TG distance were parameters that significantly contributed to patellar instability. Rotational profile CT can be considered a good diagnostic tool to assess all these parameters that help to identify anatomical aberration resulting in patellofemoral instability, thereby helping in formulating the most effective treatment plan.
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Nobuyuki Shimokawa,Hidetoshi Sato,Hiroaki Matsumoto,Toshihiro Takami 대한척추신경외과학회 2019 Neurospine Vol.16 No.3
Determining the optimal surgical method for cervical ossification of the posterior longitudinal ligament (OPLL) is challenging. The surgical indication should be made based on not only radiological findings, but also the patient’s age, preoperative neurological findings, social background, activities of daily life, and the presence or absence of comorbid diseases. Anterior resection for OPLL with or without wide corpectomy and fusion, posterior decompression with or without relatively long fusion, or anterior and posterior combined surgery may be considered. When evaluating the clinical condition of patients with cervical OPLL before surgery, various radiological parameters should be carefully considered, including the number of spinal segments involved, the cervical alignment or tilt angle, the relationship between OPLL and the C2–7 line (termed the “K-line”), the occupying ratio of OPLL, and the involvement of dural ossification. The objective of this article is to review the radiological parameters in current use for deciding upon the optimal surgical strategy and for predicting surgical outcomes, focusing on cervical OPLL.
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Sujung Mok,Sam Yeol Chang,Sung Cheol Park,Ihnseok Chae,Hyoungmin Kim,Bong-Soon Chang,Tae-Joon Cho,Jung Min Ko 대한정형외과학회 2022 Clinics in Orthopedic Surgery Vol.14 No.3
Background: This study aimed to analyse the trends in changes of radiologic parameters according to age to predict factors affecting the progression of thoracolumbar kyphosis (TLK). Methods: Records of patients with achondroplasia were retrospectively reviewed from July 2001 to December 2020. We measured imaging parameters (T10–L2 angle, sagittal Cobb angle, width, height, and number of wedge vertebrae, and apical vertebral translation [AVT]) of 81 patients with radiographically confirmed TLK. Based on the angle on X-ray taken in 36 months, 49 patients were divided into the progression group (P group, TLK angle ≥ 20°) and resolution group (R group, TLK angle < 20°). The mean values between the groups were compared using Student t -test, and the pattern of changes in each radiologic parameter according to age was analysed using a generalized estimating equation. Results: Some imaging parameters showed significant differences according to age between P group and R group: T10–L2 angle (p < 0.001), sagittal Cobb angle (p < 0.001), AVT (p = 0.025), percentage of wedge vertebral height (WVH) (p = 0.018), and the number of severely deformed wedge vertebral bodies (anterior height less than 30% of posterior) (p = 0.037). Regarding the percentage of wedge vertebral widths (superior and inferior endplates), the difference between the two groups did not significantly increase with age, but regardless of age, it was higher in P group than in R group. Conclusions: The difference in the TLK angle between P group and R group of the achondroplasia patients gradually increased with age. Among the imaging parameters, AVT and WVH could be factors that ultimately affect the exacerbation of kyphosis as the difference between the groups increased significantly over time.
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척추전방전위증(脊椎前方轉位症)에 대한 임상적(臨床的) 고찰(考察)
한무규,진재도,이정훈,이승우,한승원,Han, Moo-Gyu,Jin, Jae-Do,Lee, Jeoung-Hoon,Lee, Seung-Woo,Han, Sang-Won 대한침구의학회 2001 대한침구의학회지 Vol.18 No.3
Objective : Spondylolisthesis has become one of the major causes of the lower back pain in the orthopedic field. We wanted to compare the radiological change with before & after treatment including constitution-acupuncture on spondylolisthesis. Methods : This study were carried out on 9 patients with spondylolisthesis. We reviewed medical records and radiological films. We studied rating score, percent of slip, sagittal angle, percent of posterior disc height. Results and conclusions : The improvement index showed 0.04, 030, 033, 0.00, 0.32 points in isthmic type, and 0.55, 0.56, 0.53, 0.00 points in degenerative type. The percent of slip for pre/post-treatment showed 20/20, 12/11, 24/20, 30/30, 4/3 percents in isthmic type, and 12/4, 16/11, 13/9, 8/8 percents in degenerative type. Sagittal angle showed 11/11, 15/12, 21/18, 17/15, 21.19 degrees in isthmic type, and 22/21, 19/15, 2/2, 8/9 degrees in degenerative type. Percent of posterior disc height were 17/18, 26/28, 24/25, 22/23, 25/27 in isthmic type, and 29/33, 37/45, 25/31, 24/24 in degenerative type. The result suggest that constitution-acupuncture and conservational treatment are good method for treatment of spondylolisthesis, and especially in degenerative type.
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Radiographic parameters predicts survival in chronic hypersensitivity pneumonitis
( Yeon Joo Kim ),( Jooae Choe ),( Eun Jin Chae ),( Jin Woo Song ) 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.-
Backgound: Chronic hypersensitivity pneumonitis (cHP) shows variable course and prediction of survival is difficult. However, prognostic value of high resolution computed tomography (HRCT) parameters is not well defined in cHP. The aim of the study was to investigate prognostic roles of image parameters in patients with cHP. Methods: Clinical data and HRCT scan images were retrospectively analyzed in 101 patients with cHP (all biopsy proven cases). All CT variables were expressed as a percentage of the total lung volume. Fibrosis score was defined as the sum of reticulation and honeycombing score. HRCT patterns were classified as usual interstitial pneumonia (UIP) pattern or others. Results: The Median follow-up period was 67.6 months. The mean age of the subjects was 60.4 years, and 60.4% were female. Thirty-four (33.7%) patients died during follow-up. Non-survivors had lower ground glass opacity (GGO) and higher mosaic attenuation, bronchiectasis and fibrosis scores than survivors. In univariate Cox analysis, reticulation, honeycombing, ground glass opacity, mosaic attenuation, bronchiectasis and fibrosis score were significant prognostic factors in cHP patients. In a multivariate model adjusted by age, BMI and FVC, low extent of GGO (HR, 0.948; P = 0.031), high mosaic attenuation extent (HR, 1.044; P = 0.028), reticulation (HR, 1.040, P = 0.048), honeycombing (HR, 1.159; P = 0.005), fibrosis score (HR, 1.045; P = 0.013) and UIP pattern (HR, 3.222, P = 0.007) independently predicted the mortality. Among independent predictors of mortality, fibrosis score (C-index: 0.709) demonstrated better performance for predicting mortality compared with clinical model (age+ BMI+FVC, c-index 0.501) or GAP model (index, c-index 0.652; stage, c-index 0.640). Conclusions: In this study, images parameters were independent prognostic factors in patients with cHP, and showed better performance in predicting survival compared to clinical models.
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Oh, Hyeong-Seok,Shim, Chan Shik,Kim, Jin-Sung,Lee, Sang-Ho The Korean Neurosurgical Society 2013 Journal of Korean neurosurgical society Vol.53 No.1
Objective : This consecutive retrospective study was designed to analyze and to compare the efficacy and outcomes of anterior cervical discectomy and fusion (ACDF) using a fibular and femur allograft with anterior cervical plating. Methods : A total of 88 consecutive patients suffering from cervical degenerative disc disease (DDD) who were treated with ACDF from September 2007 to August 2010 were enrolled in this study. Thirty-seven patients (58 segments) underwent anterior interbody fusion with a femur allograft, and 51 patients (64 segments) were treated with a fibular allograft. The mean follow-up period was 16.0 (range, 12-25) months in the femur group and 19.5 (range, 14-39) months in the fibular group. Cage fracture and breakage, subsidence rate, fusion rate, segmental angle and height and disc height were assessed by using radiography. Clinical outcomes were assessed using a visual analog scale and neck disability index. Results : At 12 months postoperatively, cage fracture and breakage had occurred in 3.4% (2/58) and 7.4% (4/58) of the patients in the femur group, respectively, and 21.9% (14/64) and 31.3% (20/64) of the patients in the fibular group, respectively (p<0.05). Subsidence was noted in 43.1% (25/58) of the femur group and in 50.5% (32/64) of the fibular group. No difference in improvements in the clinical outcome between the two groups was observed. Conclusion : The femur allograft showed good results in subsidence and radiologic parameters, and sustained the original cage shape more effectively than the fibular allograft. The present study suggests that the femur allograft may be a good choice as a fusion substitute for the treatment of cervical DDD.
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