Efficacy of ultrasound therapy after achilles tenorrhaphy in crossbred calves: Gross and histopathological observations
2003
Sanghera, J.S. | Saini, N.S. | Roy, K.S. (Punjab Agricultural University, Ludhiana (India))
Clinically healthy cow calves (8) were divided into groups 1 (n=4) and 2 (n=4). Tenorrhaphy of left achilles tendon was performed under haloperidol- diazepam-thiopenatone combination anaesthesia with the help of 4, single-locking-loop sutures using polyamide threads. Tmmobilization of tibio-tarsal joint was dome by transfixation technique, inserting 2 pins in tibia and 2 in calcaneus, for 4 weeks. In group I (control) ultrasound therapy was not used. In group 2, ultrasound therapy at an intensity of 0.5 watt/cm(2) was used at the tenorrhaphy site. Gross observation were made and tendon biopsy was collected in 1 animal each on 30, 60, 90 and 120 days after tenorrhaphy for histomorphological observations in both groups. Biopsy from tibiotarsal joint was also collected in 1 animal each at day 120 in both groups. Gross findings suggested complete union between the cut ends of tendon at the tenorrhaphy site, reduced tendon thckening and fewer peritendinous adhesions in the ultrasound treated group. Histologically, immature fibroblasts were seen at the repaired site at 30 days in group 1 which were more dense and mature in group 2. At 60 days, orientation of collagen fibres was comparatively better in group 2 athen that in group 1. At 90 days, mature organised collagen fibres were present at the initial stage of bundle formation was still taking place in untreated group 1 whereas in treated group 1. At day 120, bundle formation was still taking place in untreated group 1 whereas in treated group 2, complete normal healing in these animals. Articular cartilage was found to be completely normal.
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