• 척추신경추나의학회지
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• 제5권2호
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• pp.33-41
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• 2010

Objectives : This study is designed to find out the relationship of scoliotic curve, cervical lordosis, lumbar lordosis and Ferguson's angle. Method : The study was composed of 46 scoliosis patients who had single curvature(Group I) on their lumbar spine(Group I-A) or thoracic spine(Group I-B) and 38 patients who had double curvature(Group II) on their lumbar and thoracic spine. The patients were evaluated with X-ray findings of full spine AP and Lateral views and statistically analyzed. Results : 1. Group II showed a significant increase in scoliotic curve angle as compared with Group I(P<0.05). 2. Scoliotic curve has a negative relationship with cervical lordosis in group II. Conclusion : 1. The patients who has double curvature of spine had higher scoliotic curve angle compared with who has single curvature. 2. The Scoliotic curve and cervical lordosis was statistically concerned on patients who has double curvature of spine.

• 척추신경추나의학회지
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• 제1권2호
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• pp.93-100
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• 2006

Objectives: To invesgate correlation between the scoliotic curve and BMI, cervical lordosis, lumbar lordosis and Ferguson angle in spinal scoliotic patient. Methods: The study was composed of 14 scoliosis patients beyond cobb'a angle $10^{\circ}$ (sample I group) and 15 scoliosis patients over cobb'a angle $10^{\circ}$ (sample II group). The patients were evaluated with X-ray findings of full spine AP and lateral views and statistically analyzed. Results: 1. Sample II group showed a significant decrease in BMI as compared with Sample I group(P<0.05). 2. Scoliotic curve had s negative relationship with $BMI({\gamma}=0.406)$ 3. Scolotic patients had a lower cervical angle than normal man. Conclusion: 1. The larger the scoliotic angle, the lower BMI 2. There are no concemed scoliotic curve and cervical lordosis, lumbar lordosis and Ferguson angle.

• 한국정밀공학회지
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• 제23권3호
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• pp.187-194
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• 2006

Unexpected postoperative changes, such as growth in rib hump and shoulder unbalance, have been occasionally reported after corrective surgery for scoliosis. However there has been neither experimental data fer explanation of these changes, nor the suggestion of optimal correction method. Therefore, the numerical study was designed to investigate the post-operative changes of vertebral rotation and rib cage deformation after the corrective surgery of scoliosis. A mathematical finite element model of normal spine including rib cage, sternum, both clavicles, and pelvis was developed with anatomical details. In this study, we also developed a special program which could convert a normal spine model to a desired scoliotic spine model automatically. A personalized skeletal deformity of scoliosis model was reconstructed with X-ray images of a scoliosis patient from the normal spine structures and rib cage model. The geometric mapping was performed by translating and rotating the spinal column with an amount analyzed from the digitized 12 built-in coordinate axes in each vertebral image. By utilizing this program, problems generated in mapping procedure such as facet joint overlapping, vertebral body deformity could be automatically resolved.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.1154-1159
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• 2004

Unexpected postoperative changes, such as growth in rib hump, has been occasionally reported after corrective surgery for scoliosis. However there has been experimental data for explanation of these changes, nor the suggestion of optimal correction method. This numerical study was designed to investigate the main correlating elements in operative kinematics with post-operative changes of vertebral rotation and rib cage deformation in the corrective surgery of scoliosis. To develop a scoliotic spine model automatically, a special program for converting normal spine model to scoliotic spine model was developed. A mathematical finite element model of normal spine including rib cage, sternum, both clavicles, and pelvis was developed with anatomical details. The skeletal deformity of scoliosis was reconstructed, by mapping the X-ray images of a scoliosis into this three dimensional normal spine and rib cage model. The geometric mapping was performed by translating and rotating the spinal colume with the amount analyzed from the digitized 12 built-in coordinate axes in each vertebral image. By utilizing this program, problems generated in mapping procedure such as facet joint overlapping, vertebral body deformity could be automatically resolved.

• 대한추나의학회지
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• 제2권1호
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• pp.121-132
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• 2001

Objectives The present study retrospectively investigated clinical outcome of patients with structual scoliosis during Chuna treatment. Methods : The study population consisted of 34 patients(14 patients of adolescent and 20 patients of adult) who were diagnosised as scoliosis with radiological finding. All patients were treated with Chuna treatment, and after treatment, evaluated with radiological measurement by calculating the scoliosis correction angle from the Initial and follow-up spine AP and lateral views. Also the evaluation of clinical outcome was done twice pre and post treatment during this study. Results : The results were summarized as follows ; 1) The 85.3 percent of patients complained physical pain. and adult group had various painful lesion compared with adolescent group. 2) Adult group had treated $18.0{\pm}7.2$ times and adolescent group treated $13.5{\pm}5.7$ times with Chuna treatment. 3) Scoliotic angle is reduced in 92.9 percent of adolescent group and had all of adult group after Chuna treatment, especially, statistically significance appeared in adult group. 4) Adult group was superior to adolescent group in correctability and scoliotic angle change. 5) Correction effect was better in the group which initial scoliotic angle was lessor, or had more time of treatment. 6) According to grade of vertebral body rotation, scoliotic angle is larger and correctability was lower. Conclusions : Chuna treatment was efficacious against scoliosis. And it is necessary for adolescent scoliosis patient to be more carefully treated and observed.

• 대한방사선기술학회지:방사선기술과학
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• 제34권4호
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• pp.263-269
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• 2011

척추촬영법은 의료기관별로 상이하고 각종 대학 및 국가시험을 위한 교재 등에 상이하게 기술되어 혼선을 빚고 있는 실정이다. 이에 동일한 환자의 선자세와 누운자세에서 촬영한 영상을 바탕으로 각 자세에서 척추측만각과 척추전만각의 차이를 비교함으로써 임상 및 관련기관, 참고서적에 가장 적절한 촬영 자세를 정립하여 제시하고자 하였다. 2009년 3월부터 2011년 9월까지 척추질환 환자 중 수술적 치료를 받지 않은 85명을 대상으로 Cobb's method를 이용하여 척추전만각(lordortic angle) 및 척추측만각(scoliotic angle)을 측정하였다. 각각의 측정자료는 t-test(SPSS 18)를 이용하여 유의성을 분석하였으며, 임상의 실태 파악을 위해 서울소재 10곳의 대학병원을 대상으로 척추촬영의 자세와 시행근거를 설문으로 조사하였다. 척추측만각의 측정 결과, 선자세가 바로누운자세보다 평균 20.98% 증가하였으며, 통계적으로 매우 유의한 차이를 보였다(p<.01). 척추전만각은 지지대잡은자세가 측와위자세보다 29.3% 증가하였으며, 통계적으로 매우 유의하였다(p<.01). 의료기관의 실태 결과, 누운자세촬영이 70.0%로 선자세촬영의 30.0%보다 월등하게 나타났다. 결론적으로 선자세촬영은 누운자세촬영보다 척추측만각 및 척추전만각이 증가하여 임상적 진단과 치료에서 중력이 가해진 선자세 촬영의 중요성과 일치하였으므로 임상의 검사자는 그 차이를 인식하여 필히 정확한 선자세에서 촬영이 요구된다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.1059-1061
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• 2002

A FE model is to develop a personalized biomechanical model of the scoliotic spine that will allow the design of clinical test providing optimal estimation of the post-operation results. A flexible multi-body model of the spine including rib cage, clavicle, and scapular was developed to simulate several mobility simulations. Vertebrae, clavicle and scapular were represented using rigid bodies and ribs and sternum were modeled as flexible bodies. Kinematical Joints and spring elements were used to represent the intervertebral disc and ligaments respectively. Postero-anterior and lateral radiographics of a scoliotic spine were used to represent a 3D reconstruction. CT data for same patient were also used to verify vertebrae rotation driven from postero-anterior and lateral radiographic images. Simulated results showed good reducibility almost uniformly distributed along the spinal segments. It was also found that boundary and loading conditions, required to mimic the operation procedures, were proven to be very sensitive parameters to its results rather than its mechanical properties

• 척추신경추나의학회지
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• 제7권1호
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• pp.27-34
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• 2012

Objectives : The purpose of this study is to find out the relation between 4th lumbar rotational malposition and scoliosis. Methods : We investigated 22 cases of patients who were diagnosed as scoliosis. We used AP & Lateral view X-ray for patients. And we analysed the relation between 4th lumbar rotational malposition and scoliosis. Results : P-value was 0.436 between 4th lumbar rotational amount and lordotic angle, and was 0.758 between 4th lumbar rotational amount and wedge angle(p>0.05). And p-value was 0.022 between 4th lumbar rotational amount and scoliotic apex rotational amount(p<0.05), but was 0.286 between 4th lumbar rotational amount and Cobb's angle(p>0.05). Conclusions : The results suggest that 4th lumbar rotational malposition was statistically correlation with scoliotic apex rotational malposition, was not Cobb's angle, 4th lumbar lordotic & wedge angle.

• Journal of Korean Neurosurgical Society
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• 제64권6호
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• pp.843-852
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• 2021

The purpose of this review was to synthesize the research on global spinal alignment and reciprocal changes following cervical or thoracolumbar reconstruction surgery. We carried out a search of PubMed, EMBASE, and Cochrane Library for studies through May 2020, and ultimately included 11 articles. The optimal goal of a truly balanced spine is to maintain the head over the femoral heads. When spinal imbalance occurs, the human body reacts through various compensatory mechanisms to maintain the head over the pelvis and to retain a horizontal gaze. Historically, deformity correction has focused on correcting scoliosis and preventing scoliotic curve progression. Following substantial correction of a spinal deformity, reciprocal changes take place in the flexible segments proximal and distal to the area of correction. Restoration of lumbar lordosis following surgery to correct a thoracolumbar deformity induces reciprocal changes in T1 slope, cervical lordosis, pelvic shift, and lower extremity parameters. Patients with cervical kyphosis exhibit different patterns of reciprocal changes depending on whether they have head-balanced or trunk-balanced kyphosis. These reciprocal changes should be considered to in order to prevent secondary spine disorders. We emphasize the importance of evaluating the global spinal alignment to assess postoperative changes.

• 한국정밀공학회지
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• 제21권8호
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• pp.157-163
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• 2004

Scoliosis is a complex musculoskeletal dieses requiring 3-D treatment with surgical instrumentation. To investigate the effects of correction surgery, a finite element model of personalized model of the scoliotic spine that will allow the design of clinical test providing optimal estimation of the post-operation results was developed. Three dimensional skeletal parts, such as vertebrae, clavicle and scapular were modeled as rigid bodies with keeping their morphologies. Kinematical joints and spring elements were adapted to represent the inter-vertebral disc and ligaments respectively. With this model, two types of surgery procedure, distraction procedure with Harrington device and rod derotation procedure with pedicle screw and rod system had been carried out. The obtained simulation results were comparatively corresponding to the post operational outcomes and successfully demonstrated qualitative analysis of surgical effectiveness. From this analysis, it has been found that the preparing of appropriate rod curvature and its insertion was more important than just performing the excessive derotation for scoliosis correction.