Tendon injuries is one of the clinical features in medicine and veterinary medicine. There are different invasive and noninvasive treatment protocol for tendon injuries. The mechanism of magnetic field effect for treatment and healing of tendinous injuries is not understood yet. This study was conducted on 10 clinically adult healthy native Dogs from both sex. They were divided in to two groups of Control and experiment. The animals were anesthetized generally. The Left SDF Tendon was exposed and 3 windows of 0/6 cm thickness, 0.3 cm length with 2 mm intervals were made on it.

In the experimental group the dogs were subjected to magnetic field of 6 x 800 gaus, for 24 hours daily for 30 days. They were also monitored clinically for one month. The tendon biopsy was collected from the site of operation on 30th postoperative day for histomorphological and Biomechanical evaluation. Clinical observation of wound healing and physical activity of experimental Dogs relatively were quite better as Compared to Control ones on 20th day of treatment.

Histomorphological changes of tendon biopsy indicated that the presence of low rate of inflammatory cells and also high rate of the mature fibroblast and subsequent increased in regular collagen fibers at the site of windows qualitatively and quantitatively were significantly better in experimental group. The biomechanical test revealed that the tendons of the dogs in experimental group have more resistant than tondens of dogs in Control group, which was due to positive effect of magnetic field therapy and therefore faster healing rate of tendinous injuries. The result of this study indicated that M.F.T reduces edema, local swelling as well as proliferation of fibroblasts and regular arrangement of collagen fibers.

This study proved that M.F.T is a good noninvasive physical therapy for tendinous injuries.