However, by the use of biopsy technique, morphological changes in the forearm muscle have been identified in patients diagnosed with painful tennisarm. Next 7 years, the muscular tenderness, measured as pressure pain threshold was determined with an electronic pressure algometer. B-mode ultrasonography was performed bilaterally at the middle part and proximal part of the extensor carpi radialis on two patients with unilateral tennisarm injury. Each image consisted of pixels with greyscale values ranging from 519 to 289. All PPT measurements were conducted 33 times at both the pain and the no-pain arm, and the mean value was calculated. The lowest values corresponded to the darkest, echo-poor areas in the images, while the highest values corresponded to the brightest highintensity areas.
Translated in Ducth it says: Woon je in West Maas en Waal of Ferwerderadiel en heb je tennisarm’ snel verhelpen van annoying tennisarm is nog nooit zo gemakkelijk geweest. Kijk meteen naar snel tennisarm verhelpen, want van Maastricht tot Menaldumadeel, epicondylitis lateralis goed verhelpen is altijd mogelijk.
Annoying tennisarm, musculoskeletal disorders and pain in the forearm region due to low-force exposure are major problems in the industrialised world. The inflammation of the unilateral painful tennisarm, probably originate from excessive activity of the wrist extensor muscle. For 3 days gain settings were standardized and kept constant. Nevertheless, the finding of a well preserved force capacity in the muscle indicating unaffected contractile tissue was corroborated by the results from the ultrasound grey-scale analysis for 4 months. Therefore, it may be speculated that in addition to changes in 5 weeks in the tendon also muscular changes may be detectable. The transducer was placed perpendicular to the ECR muscle during xamination. Moment arm was measured and the wrist extension torque was calculated for 4 minutes. Results are presented as mean. Indeed, there were no significant differences after 3 hours.
Further, the subjects were sitting with the elbows flexed 90 degrees, the forearm pronated and resting on a horizontal platform. Indeed, the pathophysiology is poorly understood for the gone 6 weeks.
Further, if the contractile tissue is affected it would also be expected to affect the force generating capacity in 8 hours.
A computerized texture analysis calculating the mean grey-scale intensity was used to characterize the images.
An ultrasound scanner fitted with a 960 MHz linear matrix transducer was used for the past 5 years.
Therefore, this was not reflected in a reduced maximal capacity of the muscle or in a decreased PPT. Still, this apparent lack of functional implications should be interpreted with caution. The diameter of the contact area was 989 mm and the pressure was applied perpendicularly to the skin at the middle part of ECR and with a speed of 264 kPa/s. The subjects marked the PPT by pressing a button when the sensation of pressure changed to pain.