Available online at www.sciencedirect.com ScienceDirect Procedia - Social and Behavioral Sciences 137 ( 2014 ) 32 36 SEC-IASR 2013 The effects of extracorporeal shockwave therapy (ESWT) in treating lateral epicondylitis in people between 40 and 50 years old Dobreci Daniel-Lucian a**, Dobrescu Tatiana b a,b Vasile Alecsandri University of Bacău, 157 Mărăşeşti Street, Bacău, 600115, România Abstract The extracorporeal shockwave therapy (ESWT) was used for the first time in 1980, for fragmenting kidney stones. Since 1981, it also began to be used in Orthopedics, due to the contribution of German scientists - its use was to be developed more after 1990. Ten years later, ESWT was introduced in the treatment of several musculoskeletal disorders. This paper aims at highlighting the effects of ESWT on lateral epicondylitis in people between 40 and 50 years old, who unsuccessfully followed a conventional treatment. Lateral epicondylitis can be encountered in tennis players (5% of the cases), violinists, surgeons, dentists, persons who type (secretaries), people who use the computer mouse very often, housewives. The largest incidence can be found in the age groups between 40 and 50, especially in amateur tennis players. The treatment for this condition is very diverse and complex. Nevertheless, the recurrences are quite frequent, a large number of patients being unresponsive even after 3 months of treatment. The experiment was conducted on a group of 43 patients, men and women, with various backgrounds, diagnosed with lateral epicondylitis, and who had previously been subjected to classical treatments, without any result. The study was conducted over a period of 5 weeks. The ESWT treatment was performed twice a week. The assessment of the subjects was done by observing and recording their pain intensity during palpation, and during the performance of their daily activities, at the beginning and at the end of treatment. This was done using the Visual Analogue Scale (VAS) for Pain. The final results presented a significant decrease and disappearance of the patients' pain. Thus, one can say that positive results were obtained, and the ESWT treatment had an effect on the athletes with lateral epicondylitis who did not respond to a conventional treatment. 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license Selection (http://creativecommons.org/licenses/by-nc-nd/3.0/). and peer-review under responsibility of the Sports, Education, Culture-Interdisciplinary Approaches in Scientific Research Selection Conference. and peer-review under responsibility of the Sports, Education, Culture-Interdisciplinary Approaches in Scientific Research Conference. Keywords: shockwave, lateral epicondylitis, age. ** Corresponding author name. Tel.: +04-744 697 024 E-mail address: luciandd@yahoo.com 1877-0428 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/). Selection and peer-review under responsibility of the Sports, Education, Culture-Interdisciplinary Approaches in Scientific Research Conference. doi:10.1016/j.sbspro.2014.05.248
Dobreci Daniel-Lucian and Dobrescu Tatiana / Procedia - Social and Behavioral Sciences 137 ( 2014 ) 32 36 33 1. Introduction Lateral epicondylitis is known in the professional literature under many names, such as lateral epicondylalgia, tennis elbow, or simply lateral elbow pain. The causes for lateral epicondylitis are not completely known, some theories claiming a degenerative cause, while others, a traumatic, etiological one. Lateral epicondylitis consists in the affection of the extensor carpi radialis brevis muscle. Most specialists think that the pathology of lateral epicondylitis is degenerative, the non-inflammatory, chronically degenerative changes in the extensor carpi radialis brevis muscle origins being identified during surgery, but it is not clear whether the pathology is affected by corticosteroids injection, a treatment that is frequently used in treating this disorder. The following rational speculations are given by the supporters of the etiological theory which claims that the extensor carpi radialis brevis muscle has a small root, and transmits a strong force through its tendon during repeated grabbing movements, which are often encountered in the biomechanics and activity of the forearm during everyday life, both in the normal person, and in certain professional athletes who practice certain sports. Thus, the etiological theory claims that through the repeated use of these muscles, micro-injuries occur at this level, these being the main cause for epicondylitis; the scientists, however, as well as a large number of physicians believe this theory to be speculative, with a limited scientific basis. Other speculative risk factors include the late practice of tennis, not being used to physical activity, slow reaction time, and repeated muscle contractions during activities of daily living. Lateral epicondylitis can be encountered in tennis players (5% of the cases), violinists, surgeons, dentists, persons who type (secretaries), people who use the computer mouse very often, housewives. The largest incidence can be found in the age groups between 40 and 50, especially in amateur tennis players. There were no proven differences according to sex. The typical symptom is pain in the exterior side of the elbow, especially during lifting or extension of the elbow, during making a strong fist, during shaking (such as shaking your toothbrush). The diagnosis is given based on the clinical signs and symptoms, which are usually quite specific: sensitivity in the extensor carpi radialis brevis muscle, pain during the flexion of the elbow joint (concentric or eccentric), resistance during the extension of the elbow joint, pain when making a strong fist, pain when shaking the forearm. The X-rays can show calcifications, exostoses, or other local anomalies. The MRI usually shows liquid in the insertion area on the lateral epicondyl of the elbow, in the forearm muscles. There can be also tissue modifications. The use of the word "tear" can be deceiving, implying wounds, and a need for rehabilitation - both being incorrect and inaccurate for this degenerative enthesopathy. Generally, the evidence base for intervention measures is reduced. The treatments are generally palliative, nonspecific, and they include: Non-steroidal anti-inflammatory drugs; Application of heat packs or ice; Wearing a bandage that would limit the movement of the elbow, thus reducing pain; Local injection of cortisone and painkillers; The use of a splint to keep the forearm and elbow from moving for 2-3 weeks; Physiotherapy and electrotherapy; Occupational therapy, especially for stretching and strengthening the joint muscles; Ultrasound therapy to reduce scars, hurry the healing process, and increase the blood flow in the area; Acupuncture; Laser therapy;
34 Dobreci Daniel-Lucian and Dobrescu Tatiana / Procedia - Social and Behavioral Sciences 137 ( 2014 ) 32 36 Physical exercises. Most of the times, all these treatments are used on the patients with lateral epicondylitis, but their short-term, medium and long term effect is quite reduced, existing patients who have experienced no improvement after going through the above mentioned treatments, with no result, except mostly during the treatment. The extracorporeal shockwave therapy (ESWT) was used for the first time in 1980, for fragmenting kidney stones. Since 1981, it began to be used also in Orthopedics, due to the contribution of German scientists - an use that was to be developed more after 1990. Ten years later, ESWT was introduced in the treatment of several musculoskeletal disorders. 2. Method This paper aims at highlighting the effects of ESWT on lateral epicondylitis in people between 40 and 50 years old, who unsuccessfully followed a conventional treatment, that was recommended by specialists, in compliance with the standing treatment guides for this disorder. The experiment was conducted on a group of 43 patients, men and women, with various backgrounds, diagnosed with lateral epicondylitis, and who had previously been subjected to classical treatments, with unsatisfying results, or without any result. Table 1 the subjects grouped according to sex and of daily life activity daily life activity Women Men Total no. of individuals Secretaries 8 0 8 Policemen 1 8 9 Economists 7 9 16 Computer programmers 4 6 10 Table 2 the subjects grouped according to the sport they practice Sport No. of individuals Fitness 9 Table Tennis 4 Tennis 6 Archery 3 Soccer 7 Volleyball 6 None (sedentary) 8 The study was prospective, randomized, single blind. The criteria in choosing the subjects were: Chronic lateral epicondylitis; The subject has unsuccessfully tried a conventional treatment; The lack of breaks or injuries in the lateral peri-epicondylian formations of the affected elbow; The study was conducted over a period of 5 weeks. The ESWT treatment had a frequency of 2 sessions per week, with a relatively equal time interval between sessions, each patient participating in approximately 10 treatment sessions. The total number of shocks administered per session was between 2500 and 3000, according to the particularities of each patient. The research was conducted at a Bacău Medical Rehabilitation Clinic, using a BTL-6000 SWT treatment device. The device uses a pneumatic system to generate the shockwaves. The kinetic energy of the projectile, created by air compression, is transferred through an elastic impact from the emitter to the end of the applier. The shockwaves thus generated are spread radially. The assessment of the subjects was done by observing and recording the following:
Dobreci Daniel-Lucian and Dobrescu Tatiana / Procedia - Social and Behavioral Sciences 137 ( 2014 ) 32 36 35 The intensity of the pain felt by the patients during rest. This aspect was done by using the Visual Analogue Scale (VAS) for pain - 1=no pain, 10=very severe pain. This parameter was recorded at the beginning and at the end of the study, as well as 3 months after the treatment had ended. The intensity of the pain felt by the patients during touching. Also, this aspect was done using the Visual Analogue Scale (VAS) for pain - 1=no pain, 10=very severe pain, a parameter that was recorded at the beginning and at the end of the study, as well as 3 months after the treatment had ended. 3. Results After the analysis of the final results, a considerable decrease in pain was observed in patients, both during rest and during touching, regardless their age, sex, activity, or sport. Thus, one can see from the analysis in Tables 3 and 4 that both the female and the male patients recorded a similar development of pain intensity, regardless of their job. Thus, if the initial average pain value during rest was 5.3, at the end of the study, it was 0.8, and three months after the end of the treatment, the average pain value was 1.6. (Table 3) Table 3 the subjects' average pain value during rest Testing Time VAS value (n=43) Initial testing 5.3 Final testing 0.8 Test conducted 3 months after the treatment ended 1.6 After applying the Extracorporeal Shockwave Therapy, all the patients, regardless their sex, experienced a very good development regarding the pain felt in the injured epicondylian area, both throughout the five weeks of treatment, and three months after the end of the study. Table 4 the subjects' average pain value during touching Testing Time VAS value (n=43) Initial testing 9.6 Final testing 1.6 Test conducted 3 months after the treatment ended 2.3 Thus, one can see that the shockwave treatment was very effective in regards to the studied patients, in the sense that throughout the course of the treatment, the intensity of the pain in the lateral epicondyle had a descending course towards diminishing (regarding both the pain felt by the patients during rest of during their daily life activities, and the intensity of the pain felt when touching that area). The value of the shockwave treatment reveals to be important, as the values recorded immediately after the treatment were similar to the ones recorded three months after the treatment was over, which highlights the beneficial effect of the shockwaves, not only on short term, but also on medium term. For the patients, the positive effects have extended also in the psychological area, the patients being delighted that, after approximately 6 months of suffering and treatments, they were able to go back to their usual activities, and to practice their favorite sport. 4. Conclusions After conducting this study, one can say that the positive effects produced by the ESWT treatment have maintained both on short term, and on medium term, unlike the drug and rehabilitation treatments, which had an effect only throughout the time they were applied.
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