These tests have been performed by the team of professors, Byungjik Kim and Shinwoo Park of Medical college orthopedic surgery of Inje University, Paik Hospital in Seoul.
Introduction
This report is the results evaluated from the efficacy of air corset(Disk Dr.) by measuring changes of the pain, radiographic changes and muscular strength of the flexor and the extensor at the lumbar vertebrae by making use of uniform motion measuring machine after having lumbago patients wear the air corset (Disk Dr.)
The subject of the study
22 patients with acute or chronic lumbago. Age range covers from 19 to 58. Average age: 44, and 8 patients are the most in fifties. 9 men and 13 women by sexes 9 patients with slipped disks, 9 patients with acute lumbago and 4 patients with chronic lumbago by diseases.
Methods of the study
In order to evaluate the efficacy after wearing Disk Dr., Macnab's criteria was firstly used to examine changes of the pain. Secondly, radiographic method was used to analyze by photographing side views of lumbar vertebrae and sacral vertebrae, comparing with those photographed before wearing Disk Dr., And thirdly, Cybex 6000 Trunk Extension Flexion (TEF) Unit was used to measure and analyze muscular strength of the flexor and the extensor the lumbar vertebrae.
Results of the study
1) Changes of the pain
Macnab's criteria was used to evaluate the pain. "Excellent" grade is a state without pain, without any restrictions on movements and that makes it possible to get back to normal workings. "Good" grade is a state with pain sometimes, but possible to get back to normal workings. "Fair" grade means slight progress and "Poor" is just like as it is written. As a result, 85% of the patients have taken great favourable turns within 3 days showing 3 "Excellent" and 15 "Good" among the total of 22 patients.
2) Radiographic changes
According to the results from comparing x-rays of side views of lumbar vertebrae and sacral vertebrae before and after the application of Disk Dr. in 12-patient cases, the anterior curvature of lumbar vertebrae has been increased and he interval of intervertebral disk at the 4th and 5th segment of lumbar vertebrae has been broadened by 3mm average.
3) The evaluation of uniform motion
We have measured the muscular strength of lumbar vertebrae of randomly selected three persons among 12 patients by using Cybex 6000 TEF unit. According to the results from comparing the graphs measured before and after the application of Disk Dr. about the total joule at 60 angular velocity, maximum couple, maximum couple proportion to the weight and average power, we decided that Disk Dr. was useful to reinforce the muscular strength as it showed in the following graphs that the extensor muscle power remained longer.These examinations were made for two days in cosideration of the muscular fatigue. From this result, we could say that the radiographic increase of the anterior curvature of lumbar vertebrae was caused not only by physical body softness but also by strengthening the muscle power.
4) Conclusion
As a result, 85% of the patients have taken great favourable turns showing 3 "Excellent" and 15 "Good" among the total of 22 patients. After the application of Disk Doctor, we could confirm the fact that there was physical body softness between the segments of the 4th and 5th lumbar vertebrae and the motion of extensor lasted longer.These results were obtained from the various examinations about the efficiency of Disk Dr. presumed to play a efficient role in treating the acute & chronic lumbago patients.
5) Efficacy and effect of Disk Dr.
Disk Dr. is presumed to have effects on the acute and chronic lumbago caused by following factors:
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The acute & chronic sprain of lumbar vertebrae
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Protruded intervertebral disc
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Spondylolysis and Spondylolisthesis
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Spinal stenosis
Principles of the traction of Disk Dr.
Disk Dr. is an cutting - edge ambulatory traction belt widening the interval between the segments of vertebrae, by applying air pressure
Analysis of Questionnaire after the Application of Inflated Lumbar Corset (Disk Dr.)
This questionnaire has been performed by the team of professors, Byungjik Kim and Shinwoo Park of Medical college orthopedic surgery of Inje University, Paik Hospital in Seoul.
The subject of this questionnaire
328 people who have used Disk Dr. and answered the questions faithfully.
Methods of this questionnaire
1) Questions consist of the name of disease, occurrence, duration, the efficacy of Disk Dr. by age group, pain decreasing efficacy of wearing Disk Dr, etc.
2) Using SPSSWIN programs, statistical analyses were performed, and X2 trend test, linear association and chart were added.
Summary of statistical analysis
From the result, in terms of total subjects by age, 40s (32.9%) was the major portion of the questionnaire, and the names of disease were Herniated intervertebral disc (Nucleus Pulposus) (70.2%), Spondylolisthesis (7.2%), Spinal stenosis (6.8%), Sprain of lumbar vertebrae (1.9%), Sciatica (1.9%). In terms of duration, "3 years and over" was major portion (52.2%). In terms of occurance, "Always" was major portion (30.2%). Moreover, 250 of the subjects (76.2%) had special examinations including CT been taken.
In this questionnaire, 90.5% of the subjects using air injection type corset (Disk Dr.) answered that it relieved the pain. Compared to the Alhgren's report, through which he said 30-80% of the subjects answered to get better, air injection type corset (Disk Dr.) is very effective.
Moreover, 75% of the subjects answered to wear it for more than 12 hours. This refers to the comfort to the air injection type corset. The answer that 88.1% of the subjects recommended others to use Disk Dr.
Favorable turns after using Disk Dr. 90.5%
Recommend others to use Disk Dr. 88%
