• Journal of the Korea Convergence Society
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• v.8 no.1
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• pp.77-87
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• 2017

The purpose of This study was to compare the effect of Convergence-Based russian current(RC) and transcutaneous electrical nerve stimulation(TENS) on pain, muscle strength, function of knee who had a surgical anterior cruciate ligament reconstruction(ACLR). A total of 40 Participants divided into 2 groups, with ACLR, were assigned to russian current group(RCG) or transcutaneous electrical nerve stimulation group(TENSG). Both groups were measured by varieties of tests: visual analog scale(VAS), knee flexion & extension muscle strength, knee injury and osteoarthritis outcome score(KOOS), korean lower extremity functional scale(LEFS). Both groups has shown significant changes within the measurements of VAS, Knee Flexion & Extension muscle strength, KOOS and LEFS. The RCG had more significant increase within knee extension muscle strength, LEFS compared to TENSG. By studying this research, both interventions were effective to ACLR patients, moreover, RC was more effective for knee muscle strength and lower extremity function than the TENS.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.1 no.2
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• pp.78-85
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• 2008

Purpose: The findings of preoperative magnetic resonance imaging (MRI) and ultrasonography (US) examination in the diagnosis of rotator cuff tear were then compared with the findings of arthroscopic examination, and to evaluate the postoperative integrity of rotator cuff using serial US examination. Methods: Between February and May 2008, 29 patients with rotator cuff tear had undergone preoperative US and MRI examination and subsequent arthroscopic examination. And the results of MRI and US were compared with intra-operative results of the arthroscopic examination. We observed the postoperative integrity of rotator cuff using serial (postoperative 2 weeks, 6 weeks, 3 months) US examination. Results: The sensitivity of US and MRI for identifying rotator cuff tear were 100% and 100%. The sensitivity of US and MRI were 95% and 82% in full thickness tear, and 50%, 33% in partial thickness tear, respectively. Overall accuracy of US and MRI were 86%, 69%. Among 22 patients were operated for full thickness tear, intra-operative gap formation was identified in 11 patients (50%, small to medium 2 cases, large to massive 9 cases) which were identified at 2 weeks postoperative US. We could find 5 re-tears (23%, small to medium 1 case, large to massive 4 cases) on 6 weeks postoperative US after passive range of motion (ROM) exercise, and could also find 7 re-tears (32%, small to medium 2 cases, large to massive 5 cases)on 3 months postoperative US after active ROM exercise. Conclusion: Serial US after arthroscopic rotator cuff repair was useful to differentiate intra-operative gap formation from postoperative re-tear. We found 5 retears (23%) at 6 weeks and 7 retears (32%) at 3 months postoperative US, it was useful to make treatment plan during postoperative rehabilitation.

• Therapeutic Science for Rehabilitation
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• v.3 no.2
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• pp.71-81
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• 2014

Objective: The purpose of this study is to ob serve effects of CPM(Continuous Passive Motion) on hand functional and upper-extremity muscular strength rehabilitation for stroke patients. Method: Objects of this study, three patients have the symptoms of hemiplegia due to stroke. These are acute patients, within a 18 months after treatment and correspond in Brunnstrom stage 4~6. This study used single subject (A-B) design for three patients with a stroke and the effect of CPM was measured using Jebsen-Taylor hand function test, Purdue Pegboard test, hand muscular strength test. They received CPM for 3 weeks, 2 per day, 30 minutes for each, total 30 times. Results: Two patients' results of fingertip grip test in hand strength measurements did not change. Results of Jebsen-Taylor hand function test, Purdue Pegboard test and other hand muscular strength test were improved. To validate statistical results nonparametric statistical method, Wilcoxon signed ranks test was performed. P-Values are greater than 0.05 so difference between be fore and after treatment is not statistically significant result. Conclusion: Despite of limitation of short program period and fewer participants, CPM which has been conducted for stroke patients showed the effect on improvement of hand function and muscle strength. This study shows that CPM which is mainly used to treate lower-extremity rehabilitation can be use to improve performance of hand function and strength for patients with stroke.

• The Journal of Korean Physical Therapy
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• v.18 no.6
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• pp.1-11
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• 2006

Purpose: This study compared the effects of non-cold and cold conditions on the viscoelastic properties of tendon structures in vivo. Methods: Seven male subjects perfomed plantar flesion exercise with maximal isokinetic voluntary contraction, which consisted of muscle contraction for 6 see and relaxation for 60 secs, 10 times for 1 set, Totally 10 sets were repeated. Before and after each task, the elongation of the tendon and aponeurosis of the medial gastrocnemius muscle (MG) was directly measured by ultrasonography. (The relationship between the estimated tendon force and tendon elongation.) Tendon cross-sectional area and ankle joint moment arm were obtained from magnetic resonance imaging (MRI). The tendon force was calculated from the joint moments and the tendon moment arm and stress was obtained by dividing force by cross-sectional areas (CSA). The strain was measured from the displacements normalized to tendon length. Results: After cooling, the tendon force was larger in cold than non-cold. The value of the tendon stiffness of MVC were significantly higher under the cold condition than under the non-cold condition. The maximal strain and stress of $7.4{\pm}0.7%$ and $36.4{\pm}1.8$ MPa in non-cold and $7.8{\pm}8.5%,\;31.8{\pm}1.1$ MPa in cold (P<0.05). Conclusion: This study shows for the first time that the muscle endurance in cooling increases the stiffness and Young's modulus of human tendons. The improvement in muscle endurance with cooling was directly related to muscle and tendon.