• Journal of Korea Society of Industrial Information Systems
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• v.5 no.1
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• pp.77-86
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• 2000

Even manual materials handling tasks(MMHT) is decreasing by adopt of automatic manufacturing system & transportation supporting machine because of increase of productivity, wage lack of labor, safety, in fact working at inclined & complicated slope such as farm, orchard, harbor loading & unloading, logging place and mining place can't be substituted by machine perfectly. So, workers should do MMHT at this place by themselves, lifting on slope can cause much of hazard, include falling. Keeping balance net to slip can be a reason of low back pain(LBP) by overloaded musculoskeletal system but, there's no enough study about lift on slope. Therefore, In this study, we assessed and analyzed change of center of pressure(COP) when lifting on slope by force platform. The result showed that the length lengthen as increasing angle of slope. Especially, the length extremely increased over 15°. Through These basic result, present proper angle boundary, prevent industrial accidents and give proper data not only lifting but also pushing and pulling on slope someday.

• Journal of Physiology & Pathology in Korean Medicine
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• v.32 no.2
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• pp.141-147
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• 2018

The purpose of this research is to show the effectiveness of spinal stenosis treated by Hominis Placenta Megadose pharmacopuncture combined with Korean medicine treatment. We used Hominis Placenta Megadose pharmacopuncture treatment on patients who received treatment at Bucheon Jaseng Korean medicine hospital from March, 2016 to October, 2016. Also we checked Numeric Rating Scale(NRS), Oswestry low back pain Disability Index(ODI) to follow the scale showing the improvement of the symptoms of the patients. All 4 patients showed the improvement of NRS, ODI scales. This research suggests Hominis Placenta Megadose pharmacopuncture combined with Korean medicine treatment can help treat spinal stenosis.

• Journal of the Korean Society for Precision Engineering
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• v.23 no.4 s.181
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• pp.176-182
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• 2006

Although several artificial disc designs have been developed for the treatment of discogenic low back pain, biomechanical changes with its implantation were rarely studied. To evaluate the effect of artificial disc implantation on the biomechanics of functional spinal unit, a nonlinear three-dimensional finite element model of L4-L5 was developed with 1-mm CT scan data. Biomechanical analysis was performed for two different types of artificial disc having constrained and unconstrained instant center of rotation(ICR), ProDisc and SB Charite III model. The implanted model predictions were compared with that of intact model. Angular motion of vertebral body, forces on the spinal ligaments and facet joint, and stress distribution of vertebral endplate for flexion-extension, lateral bending, and axial rotation with a compressive preload of 400N were compared. The implanted model showed increased flexion-extension range of motion compared to that of intact model. Under 6Nm moment, the range of motion were 140%, 170% and 200% of intact in SB Charite III model and 133%, 137%, and 138% in ProDisc model. The increased stress distribution on vertebral endplate for implanted cases could be able to explain the heterotopic ossification around vertebral body in clinical observation. As a result of this study, it is obvious that implanted segment with artificial disc suffers from increased motion and stress that can result in accelerated degenerated change of surrounding structure. Unconstrained ICR model showed increased in motion but less stress in the implanted segment than constrained model.

• Proceedings of the KSME Conference
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• 2008.11a
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• pp.1547-1552
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• 2008

The tip of these catheter with straight needles is not able to reach in the vicinity of the disc bulging, which are the cause of the low back pain and because the far indirect radio-frequency treatment results in the decompression, the nucleoplasty has the limit. Many incurable diseases has not been solved due to the unexistence of the advanced technique for the MIS human body catheter device. To increase the possibility of nucleoplasty, the needle tip should be located at the closest area of the lesion. For this reason, the best way to increase the success rate of the operation is that the needle tip should access 3-dimensionally to the operating field as soon as possible. To achieve this aim, our studies are restricted as follows: 1) the SMA catheter design to control the 3-dimensional direction, 2) the security of the immediate response by the positive control of the SMA element thermal distribution using Peltier thermoelectric elements, 3) the aquisition of the control data by monitoring the relationship between the temperature of SMA element and the displacement, and 4) the design of the controller to guarantee the accurate location.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.18 no.2
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• pp.9-21
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• 2012

Background: The purpose of this study was to analysis and to give information about the type of orthopedic manual physical therapy research by KAOMPT Journal from 1995 (Volume 1) to 2011 (Volume 17). The number of research paper were total 212 studies. Method: The studies were analysed with retrospective descriptive study. The results of data analysis was as follow; Results & Conclusion: 1. The studies was analysed 6 study field; manual therapy for disease field (130 studies), the therapeutic (16 studies), the effects of manual therapy education method, learning model (7 studies), medical insurance, history, politics of manual therapy (3 studies), and others (19 studies). 2. In the manual therapy of disease field, there were 4 groups of disease; bone disease (43 studies), soft tissue and muscles disease (57 studies), nerve disease(24 studies), and the others (6 studies). The main disease were low back pain, stroke, HIVD. 3. In the assessment, and intervention field, there were only 5 studies during from 1995 to 2000, but the studies from 2001 to 2011 were more increased 21 studies. 4. In the effects of manual therapy education method, learning model, there were very few studies (7 studies), so it will be needed more studies in this field. 5. In the other fields such as more political issue, history, medical insurance for the manual therapy there were few studies, so it will be needed more advanced studies in this field.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.22 no.2
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• pp.9-14
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• 2016

Purpose: Many people are suffering from Low back pain due to HIVD and muscular problems, lack of joint functions on lumbar spine. In this study we compared the change of the herniation index, Oswestry LBP disability index (OLDI), visual analog scale (VAS), lumbar flexion range of motion (ROM) between the pre-experiment and after 4 weeks treatment by maitland manual therapy. Method: we selected and managed both the 15 people. They are $46.80{\pm}15.46$ years old people with HIVD and Stenosis. We treated for the people with HIVD and Stenosis by manual therapy(maitland manipulation method) during 4 weeks. And then we compared with pre-experiment and after 12 weeks through measuring the herniation index change by using computor themograpy (CT), LBP OLDI, VAS, lumbar flexion ROM. Results: The changes in the herniation index, Oswestry lumbar Disability Index, VAS, lumbar flexion ROM between the pre-experiment and after 4 weeks treatment by maitland manual therapy, there was a statistically significant difference. Although there was a significant difference after 4 weeks in OLDI, VAS, lumbar flexion ROM. But disc herniation index was no significant difference. Conclusion: Manual therapy is very effective for Lumbago due to the HIVD and spinap stenosis patients. OLDI, VAS and lumbar flexion ROM were increased. But disc herniation index was no significant difference. We suggest the combination treatment between manual exercise and spinal traction.

• Journal of Korean Medicine Rehabilitation
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• v.23 no.3
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• pp.79-85
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• 2013

Objectives The aim of this study was to investigate pelvic insufficiency and its correlation with lumbago side. Methods 72 cases of patients who received treatment from March 2010 to February 2013 for lumbago were analyzed. Their pelvic insufficiency parameters were estimated by x-ray analysis and lumbago sides were considered. The data were analyzed to find out correlation of pelvic insufficiency parameters and correlation between parameters and lumbago sides. Pearson correlation and two-by-k cross tabulation analysis were used. Results 1) Iliac height difference had significant correlation with femur height difference and the result was alike previous studies' results. 2) Femur height difference and iliac height difference had no significant correlation with iliac width difference. 3) Posterior rotation malposition ilium side and inflare side had no significant correlation with lumbago side. Conclusions Iliac height difference had significant correlation with femur height difference and sides of pelvic insufficiency had no significant correlation with lumbago sides.

• Journal of Korean Neurosurgical Society
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• v.50 no.5
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• pp.441-445
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• 2011

Objective : There are technical limitations of multi-level posterior pedicle screw fixation performed by the percutaneous technique. The purpose of this study was to describe the surgical technique and outcome of minimally invasive multi-level posterior lumbar interbody fusion (PLIF) and to determine its efficacy. Methods : Forty-two patients who underwent mini-open PLIF using the percutaneous screw fixation system were studied. The mean age of the patients was 59.1 (range, 23 to 78 years). Two levels were involved in 32 cases and three levels in 10 cases. The clinical outcome was assessed using the visual analog scale (VAS) and Low Back Outcome Score (LBOS). Achievement of radiological fusion, intra-operative blood loss, the midline surgical scar and procedure related complications were also analyzed. Results : The mean follow-up period was 25.3 months. The mean LBOS prior to surgery was 34.5, which was improved to 49.1 at the final follow up. The mean pain score (VAS) prior to surgery was 7.5 and it was decreased to 2.9 at the last follow up. The mean estimated blood loss was 238 mL (140-350) for the two level procedures and 387 mL (278-458) for three levels. The midline surgical scar was 6.27 cm for two levels and 8.25 cm for three level procedures. Complications included two cases of asymptomatic medial penetration of the pedicle border. However, there were no signs of neurological deterioration or fusion failure. Conclusion : Multi-level, minimally invasive PLIF can be performed effectively using the percutaneous transpedicular screw fixation system. It can be an alternative to the traditional open procedures.

• Journal of Korean Neurosurgical Society
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• v.46 no.4
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• pp.305-311
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• 2009

Objective : The purpose of this study was to determine the efficacy, radiological findings, clinical outcomes and complications in patients with lumbar stenosis and osteoporosis after the use of polymethylmethacrylate (PMMA) augmentation of a cannulated pedicle screw. Methods : Thirty-seven patients with degenerative spinal stenosis and osteoporosis (T-score < -2.5) underwent lumbar fusion using the Dream Technology Pedicle Screw ($DTPS^{TM}$, Dream Spine Total Solutions, Dream STS, Seoul. Korea) between 2005 and 2007. The clinical outcomes were evaluated by using the visual analog scale (VAS) and the Prolo scale. Radiologic findings were documented through computed tomography (CT) and plain films. Results : Thirty-seven patients were evaluated and included, 2 males and 35 females with an average bone mineral density (BMD) of $0.47g/cm^2$. The average age of the patients was 68.7 (range, 57-88). The preoperative VAS for low back and leg pain ($7.87{\pm}0.95$ and $8.82{\pm}0.83$) were higher as compared with postoperative VAS ($2.30{\pm}1.61$ and $1.42{\pm}0.73$) with statistical significance (p = 0.006, p = 0.003). According to the Prolo scale, 11, 22, one and three patients were in excellent, good, fair and poor conditions, respectively. The average amount of the injected cement per one cannulated screw was $1.83{\pm}0.11\;mL$. Conclusion : The results show favorable outcome both clinically and radiographically for 37 patients who underwent lumbar fusion using $DTPS^{TM}$ and PMMA. Based on the results, the use of this surgical method can be a safe and effective option for the operation on the osteoporotic spine.

• The Journal of Churna Manual Medicine for Spine and Nerves
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• v.6 no.2
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• pp.71-78
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• 2011

Objectives : The purpose of this study was to evaluate the effect of Oriental medical treatment in patients with acute lumbar Herniated Intervertebral Disc(HIVD). Methods : This clinical study was carried out on 44 patients with acute lumbar HIVD, who had been admitted from Oct. 2011 to Nov. 2011. All of 44 patients were treated with acupuncture, Chuna treatment and herbal medicine during the whole admission period. Verbal numerical rating scale(VNRS) and Oswestry disability index(ODI) were used to evaluated the effectiveness of the Oriental medical treatment. Result : Siginificant improvement of the symptoms was seen when evaluated with VNRS and ODI. Conclusions : These results suggest that in the case of low back pain and lower limb numbness caused by acute HIVD, conservative treatments can be considered as one of the options of treating the symptoms beside surgical way.