• Title/Summary/Keyword: pelvis

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Accuracy and Reliability of The Spine-Pelvis Monitor to Record Three-Dimensional Characteristics of The Spine-Pelvic Motion

  • Kim, Jung-Yong;Yoon, Kyung-Chae;Min, Seung-Nam;Yoon, Sang-Young
    • Journal of the Ergonomics Society of Korea
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    • v.31 no.2
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    • pp.345-352
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    • 2012
  • Objective: The aim of this study is to evaluate the accuracy and reliability of Spine-Pelvis Monitor(SPM) that was developed to measure 3-dimensional motion of spine and pelvis using tilt sensor and gyro sensor. Background: The main cause of low back pain is very much associated with the task using the low back and pelvis, but no measurement technique can quantify the both spine and pelvis. Method: For testing the SPM, 125 angles from three anatomical planes were measured three times in order to evaluate the accuracy and reliability. The accuracy of SPM in measuring dynamic motion was evaluated using digital motion analysis system. The motion pattern captured by two measuring methods was compared with each other. In result, the percentage error and Cronbach coefficient alpha were calculated to evaluate the accuracy and reliability. Results: The percentage error was 0.35% in flexion-extension on sagittal plane, 0.43% in lateral bending on coronal plane, and 0.40% in twisting on transverse plane. The Cronbach coefficient alpha was 1.00, 0.99 and 0.99 in sagittal, coronal and transvers plane, respectively. Conclusion: The SPM showed less than 1% error for static measurement, and showed reasonably similar pattern with the digital motion system. Application: The results of this study showed that the SPM can be the measuring method of spine pelvis motion that enhances the kinematic analysis of low back dynamics.

Kinmatics Analysis of pelvis and lower extremity using orientation angles during a developpe a la seconde (Developpe a la seconde 동작 시 골반과 하지의 지향각(Orientation angles)의 운동학적 분석)

  • Jung, Chul-Jung;Jeung, He-Jin
    • Korean Journal of Applied Biomechanics
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    • v.14 no.3
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    • pp.259-270
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    • 2004
  • The purpose of this study was to analysis of pelvis and lower extremity using orientation angles during a developpe a la seconde. Data were collected by Kwon3D program. Two females professional modem dancer were participated in this experiment. Subjects performed a developpe a la seconde in meddle heights(about 90 dog.) The results were as follows. The orientation angles of pelvis were, in most cases, caused by the movement of trunk and thigh. It was restricted the movement of pelvis within narrow limits because the movement of pelvis was very important to lower extremity alignment. The orientation angle of shank against thigh showed a change of angle about $3-6^{\circ}$ in internal external rotation. The orientation angle of foot against shank showed a change of angle about $6-7^{\circ}$ in internal external rotation.

Frontal Plane Motion with Pelvis and Waist Joint Rotations in Bipedal Walking

  • Ha, Tae-Sin;Kim, Joo-Hyung;Choi, Chong-Ho
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.2248-2253
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    • 2005
  • Although the progress in bipedal walking is impressive in recent years, biped robots still require very high torque and can walk only for a short time interval with their internal batteries. Therefore, further research needs to be carried out to enhance walking efficiency of these robots. In order to achieve this goal, we attempt to imitate human walking with pelvis and waist joint rotations in the frontal plane. In order to investigate the effect of the pelvis and waist joint rotations in the frontal plane motion, we study the frontal plane model with a triangular structure made up of a waist joint and two hip joints. Through simulation, we show that the pelvis rotation can reduce the maximum torque and the control effort, and the waist joint rotation can reduce the trunk sway caused by the pelvis rotation. The combination of these two rotations makes the bipedal walking in the frontal plane more efficient.

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Change of Morphologic Pelvis and Deviation According to Gender, Age -Radiological Pelvimetry- (성별과 나이에 따른 골반 형태 변화와 골반 변위 -방사선영상을 이용한 골반 계측-)

  • Kang, Yeong-Han;Kim, Seon-Chil
    • Journal of radiological science and technology
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    • v.34 no.2
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    • pp.91-96
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    • 2011
  • The purpose of this study was to analyze the change of morphologic pelvis according to age and gender. Pelvis AP(anterior-posterior) projection were taken from 382 individuals (men: 194, women: 188) at the age of twenty and older. We measured four values of pelvis using CR (computed radiological system) including maximum pelvic breadth (MPB), sacral breadth (SB), transverse diameter of pelvic inlet (TD), and distance between femoral heads (DFH). Average (t-test, ANOVA) and Pearson correlation were calculated for comparison. While there was no significant difference of gender in case of MPB, significant differences were observed in SB (men 97.76 mm, women 102.00 mm), TD (men 138.0 mm, women 149.79 mm), and DFH (men 141.94 mm, women 150.39 mm). The DFH values were negatively correlated with the age (men r=-0.280, women r=-0.207). The morphological changes of pelvis were measured high in the men of 50's and in the women of 60's and 70's. The SB, TD and DFH were greater in the women than in the man. As the ages get higher, the deviation of pelvis were gradually increased, which indicates that the morphological changes of pelvis with respect to the age reflects an aging process.

A Comprehensive Kinematic Approach to Pelvis (골반의 운동학적 고찰)

  • Bae Sung-Soo;Kim Tae-Yoon;Chung Hyun-Ae;Bae Ju-Han
    • The Journal of Korean Physical Therapy
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    • v.11 no.2
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    • pp.93-102
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    • 1999
  • Alignment of the hip joint and pelvis affects it's weight-bearing capabilities as well as the motion available at the joints. The normal hip joint is well designed to withstand the forces that act through and around it, assisted by the trabecular systems, cartilagious, muscles, and ligaments. Alterations in the direction or magnitude of forces action around the injury and degenerative changes. The integration of motion of the pelvis with motion of the vertebral column not only increases the ROM available to the total column but also reduces the amount of flexibility required of the lumbar lesion. In any instance in which there is normal or abnormal pelvic motion during weight hearing and the head must remain upright, compensatory motions of the lumber spine will occur if available. The motions that occur at the hip, pelvis, and lumbar spine during forward trunk bending with the motions that occur during anterior and posterior tilting of the pelvis in the erect standing postion.

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The Effect of Body Balance on the Cervical Syndrome by Pelvis Adjustment of Chiropractic (카이로프락틱 골반 교정이 경추증후군의 신체균형에 미치는 영향)

  • Lee, Han-Chun;Oh, Pyung-Il;Hong, Seung-Hui;Lee, Tae-Young;Jang, Bu-Kyeu
    • Journal of Korean Clinical Health Science
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    • v.1 no.2
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    • pp.21-29
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    • 2013
  • Purpose. This study was to investigate that the adjustment of Chiropractic pelvis method have effect on body balance and improvement people who has some problem in their daily life. Methods. With 20 students of experiment group and 20 students of compare group who has cervical syndrome, experiment group has adjustment of chiropractic pelvis 2 times a week for 4 weeks, the other group who didn't take any action. Results. As a result, center of body of experiment group wasn't improved relations between left and right statistically. But the relations between front and back of center of body increased statistically, cross analysis relations between short leg and center of body increased statistically. Conclusions. As a conclusion, experiment group with the front of center of body was improved 12.88% average of center of body. Experiment group with back of center of body was improved 13.84% average of center of body. This result come to the conclusion that chiropractic pelvis adjustment help the front and back of body balance.

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The Body Deformity through LHNP Patients (요추부 추간판탈출중 환자의 신체변형에 관한 연구)

  • Moon, Sang-Eun
    • Journal of Korean Physical Therapy Science
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    • v.3 no.2
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    • pp.975-980
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    • 1996
  • The purpose of study was aimed at analysing the body deformity types through LHNP(lumbar herniated nucleus pulposus) patients without considering of lower extremity radiating pain. This study was proceeded in a time-series method through the ninety LHNP patients visited the hospital for the first time. The results were as follows. 1. Body type I : Deformity style of Lt shoulder & pelvis forward tilt 2. Body type II : Deformity style of Rt shoulder & pelvis forward tilt style 3. Body type III : Deformity style of Lt shoulder & Rt pelvis forward tilt style 4. Body type N : Deformity style of Rt shoulder & Lt pelvis forward tilt style.

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The Body Deformity through movement pattern of Shoulder Pain Patients (어깨 통증 환자의 운동증감패턴에 따른 신체변형 연구 -견갑골과 장골의 경사 모형을 중심으로-)

  • Chae, Jung-Byung
    • Journal of Korean Physical Therapy Science
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    • v.7 no.2
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    • pp.641-651
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    • 2000
  • The purpose of study is aimed at analysing the body deformity types through movement pattern of shoulder pain patients without considering of upper extremity radiating pain. This study was proceeded in a time-series method through the fifty shoulder pain patients visited the hospital for the first time. The results were as follows. 1. Body type I: Deformity style of Lt shoulder & pelvis forward tilt was 8 patirnts (16%) 2. Body type II: Deformity style of Rt shoulder & pelvis forward tilt style was 22 patirnts (44%) 3. Body type III: Deformity style of Lt shoulder & Rt pelvis forward tilt style was 9 patirnts (18%) 4. Body type IV: Deformity style of Rt shoulder & Lt pelvis forward tilt style was118 patirnts (22%).

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A Study on the Relationship between the Brain and the Pelvis

  • Jung, Jae Hun;Pi, Chien Mei;Ahn, Hun Mo
    • Journal of Korean Medical Ki-Gong Academy
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    • v.18 no.1
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    • pp.27-51
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    • 2018
  • Objective : The purpose of this study is to examine the relationship between the brain and the pelvis. Methods : The relationship between the pelvis and the brain was searched in PubMed, and these searching studies were reviewed. Conclusions : 1. Urinary disorder is influenced by brain. 2. Brain is influenced by luteinizing hormone. 3. Pelvic floor muscles are influenced by brain. 4. Urological Chronic Pelvic Pain Syndrome(UCPPS) is influenced by brain. 5. Brain is influenced by the low intensity laser acupuncture stimulating thirteen ghost acupoints(includes CV1).

Primary Transitional Cell Carcinoma of the Renal Pelvis in a Dog

  • Park, Ju-yong;Kang, Min-Hee
    • Journal of Veterinary Clinics
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    • v.37 no.4
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    • pp.204-207
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    • 2020
  • A 12-year-old dog was evaluated for depression and anorexia. The results of complete blood count and serum biochemistry were normal. Survey radiographs revealed markedly enlarged right kidney and abdominal ultrasound showed a renomegaly and hydronephrosis filled with mixed echogenic fluid. Primary renal tumor was suspected in this dog. Nephroureterectomy of the right kidney was performed, and no regional metastases have been identified. Transitional cell carcinoma (TCC) arising from renal pelvis accompanied hydronephrosis of the right kidney was diagnosed on histology. TCC usually affects trigone of the bladder, and renal origin of TCC is a very rare finding in dogs. This is the first case report to present the clinical features, diagnostic imaging findings and histopathological characteristics of a dog with TCC originating from the renal pelvis in Korea.