Pain was assessed on Domžał’s modified 10 degree numeric scale , where 0 means lack of pain, 10 means severe pain.
The results of the assessment of efficacy of therapy with magnetic field in degenerative knee joint disease as far as pain, range of mobility and circumference are concerned, on the level of knee joint, lateral head and medial head of quadriceps muscle of thigh before and after the therapy are shown in table 2 and 3.
Median value indicates that 50% of studied patients experienced before therapy chronic pain, increasing in severity with every change of position. Whereas, after therapy, in 75% of studied cases there was a reduction of severity of pain to the level of slight pain occurring every day with small intervals. Comparative analysis indicates that therapy has statistically significant effect on both lower limbs (Table2).
Analysis of the range of movement in knee joint in sagittal plane before and after therapy indicates significant reduction of limitation in flexion. Mean values of the range of movement indicate statistically significant increase in the range of flexion movement after therapy (Table 3). Also values of circumferences measured at the level of knee joint crevice of both lower limbs indicate significant reduction of circumferences after procedure with variable magnetic field. It may suggest reduction of oedema and positive effects of the therapy in degenerative knee joint disease. Calculated mean values of circumferences of both limbs at the level of medial head of quadriceps muscle of thigh indicate significant reduction of their circumference after therapy. No statistically significant variance was found in measurements of circumference of lower left limb before and after therapy at the level of lateral head of quadriceps muscle of thigh (Table 3). It can be assumed that it was a result of reduction of oedema and not wasting of the mass of quadriceps muscle of thigh.
Research studies carried out by Sieroń and his co-workers [7-9] indicate that that there is a wide spectrum of effects that magnetic field exerts on processes of aerobic and anaerobic respiration. It was also found that due to increased emission of endogenic opiates, magnetic fields alleviate pain. It was found that in treatment of degenerative joint disease, therapy with magnetic field is one of the most beneficial physiotherapeutic methods. On the basis of conducted study, the researches came to the conclusion that magnetic field of low frequency has positive effect on alleviation of pain. It was also noticed by Sieroń and Krawczyk-Krupka  who claim that therapy with magnetic field of low frequency has positive effect on reduction of pain and, thereby, is an alternative method for analgesic pharmacological agents.
Table 2. Statistical characteristics of the level of pain and comparison between the values of pain (Wilcoxon’s test) before and after therapy with magnetic field
With bold letters-significance of difference at the level p 0.05
Table 3. Statistical characteristics of values of range of mobility and circumference before and after therapy and their comparison using t-Student test
With bold letters is written significance of difference in values at level p 0.05
Increase in the range of movement in studied knee joints was probably connected with the fact that pain was reduced, what contributes to improvement in mobility and to maintaining necessary range of movement. Magnetic field of low frequency has also anti-inflammatory effect and it can also contribute to reduction of pain and improvement in mobility joints, as well as to reduction of oedema. Observed significant statistical differences in measurements of circumference indicate that it is an effective anti-inflammatory therapy. Also other authors [7,8,9] draw attention to the analgesic, anti-inflammatory and anti-oedema effects of magnetotherapy in treatment of degenerative changes. Many studies [2,10] confirm that there is reduction of pain, improvement of mobility in joints in patients suffering from osteoporosis after this therapy. The results obtained in the study are compatible with reports of other authors [5,6,7,8] who confirm that magnetic field of low frequency is effective in treatment of gonarthritis. The fact that magnetotherapy has become a prevalent physiotherapeutic method is a confirmation that it is a right choice of therapy of people with degenerative knee joint disease.
Therapy with magnetic field of low frequency has significant effect on reduction of the level of severity of pain in patients with degenerative knee joint disease.
Therapy with magnetic field of low frequency contributes to the increase in the range of movement of joints. Reduction of circumference in the area of knee joints of patients subjected to magnetotherapy indicates that oedema was reduced as a result of therapy.
Many service users have talked to us about the unpleasant emotional states they find themselves in either as a result of their history, or as an effect of their ongoing drug use. For all of us in the rehabilitation field, the answer does not lie completely with the development of better or more efficient drugs – cures do not exclusively come out of bottles. One view, when looking at emotions, suggests that they are – at least to some extent – the result of neurochemistry and elaborate electrical activities and pathways of the brain.
One way of getting service users to gain some control over their lives is to alter that chemical composition and re-orient that circuitry. The Viofor bed has helped achieve this by offering a viable and effective alternative to the use of prescribed drugs.The magnetic stimulating qualities of the bed have proved a strong adjunct to the counseling and psychotherapy approaches used at this agency in aiding the development of coping skills and in dealing with difficult emotions.
All in all, I feel that this one year experiment with magnetic stimulation equipment has been an extremely useful therapy that this agency will continue to use.
16. Treatment with AC pulsed electromagnetic fields normalizes the latency of the visual evoked response in a multiple sclerosis patient with optic atrophy. Sandyk R. Int J Neurosci. 1998 Apr;93(3-4):239-50.
22. Influence of the pineal gland on the expression of experimental allergic encephalomyelitis: possible relationship to the aquisition of multiple sclerosis. Sandyk R. Int J Neurosci. 1997 Jun;90(1-2):129-33.
23. Immediate recovery of cognitive functions and resolution of fatigue by treatment with weak electromagnetic fields in a patient with multiple sclerosis. Sandyk R. Int J Neurosci. 1997 Jun;90(1-2):59-74.