Navegando por Palavras-chave "Tendon injuries"

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    Collagen Changes and Realignment Induced by Low-Level Laser Therapy and Low-Intensity Ultrasound in the Calcaneal Tendon
    (Wiley-Blackwell, 2010-08-01) Wood, Viviane Timm [UNIFESP]; Pinfildi, Carlos Eduardo [UNIFESP]; Neves, Marco Aurelio Invaldi [UNIFESP]; Parizoto, Nivaldo Antonio; Hochman, Bernardo Sergio [UNIFESP]; Ferreira, Lydia Masako [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade Federal de São Carlos (UFSCar)
    Background and Objective: the treatment of calcaneal tendon injuries requires long-term rehabilitation Ultrasound (US) and low-level laser therapy (LLLT) are the most used and studied physical agents in the treatment of tendon injuries, however, only a few studies examined the effects of the combination of US and LLLT. Therefore, the purpose of this study was to investigate which treatment (the exclusive or combined use of US and LLLT) most effectively contribute to tendon healing.Study Design/Materials and Methods: This was a controlled laboratory study with 50 rats whose Achilles tendon was injured by direct trauma. the rats were randomly divided into five groups and treated for 5 consecutive days, as follows: group 1 (control) received no treatment; group 2 was treated with US alone, group 3 was treated with LLLT alone, group 4 was treated first with US followed by LLLT, and group 5 was treated first with LLLT followed by US On the sixth post-injury day, the tendons were removed and examined by polarized light microscopy. the organization of collagen fibers was assessed by birefringence measurements Picrosirius-stained sections were examined for the presence of types I and Ill collagen.Results: There was a significantly higher organization of collagen fibers in group 2 (US) than in the control group (P=0.03). the amount of type I collagen found in groups 2 (US), 3 (LLLT), and 5 (LLLT+US) was significantly higher than that in the control group (P <= 0.01), but no significant differences were found between treatment groups. There were no differences in the amount of type III collagen between groups.Conclusion: Ultrasound, LLLT, and the combined use of LLLT and US resulted in greater synthesis of type I collagen; US was also effective in increasing collagen organization in the early stages of the healing process Lasers Surg. Med. 42 559-565, 2010 (C) 2010 Wiley-Liss, Inc.
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    Functional outcomes of traumatic and non-traumatic rotator cuff tears after arthroscopic repair
    (Baishideng Publishing Group Inc, 2017) Kitagaki Abechain, Jose Jorge [UNIFESP]; Godinho, Glaydson Gomes; Matsunaga, Fabio Teruo [UNIFESP]; Netto, Nicola Archetti [UNIFESP]; Daou, Julia Pozzetti [UNIFESP]; Sugawara Tamaoki, Marcel Jun [UNIFESP]
    AIM To compare the functional outcomes of traumatic and non-traumatic rotator cuff tears after arthroscopic repair. METHODS Eighty-seven patients with rotator cuff tears following arthroscopic treatment were divided into traumatic and non-traumatic tear groups. Postoperative muscle strength and outcomes using the modified University of California, Los Angeles score were evaluated. Sex, age, affected limb and dominant limb were correlated between groups. Muscle strength of the repaired and unaffected shoulders was compared. Rotator cuff injury size was measured. RESULTS Of the 87 patients who underwent rotator cuff repairs, 35 had traumatic tears and 52 had non-traumatic tears. In patients with non-traumatic tears, the average age was 59 years, 74.5% were female, 96.1% were righthand dominant and 92.3% had their dominant shoulder affected. Patients with traumatic tears were 59.5 years hand dominant and 88.5% had their dominant shoulder affected. No difference existed in the mean modified University of California, Los Angeles score between patients with traumatic tears (33.7) compared with those with non-traumatic tears (32.8). No strength differences were observed between groups: The strength difference between the non-affected and affected sides was 1.21 kg in the non-traumatic group and 1.39 kg in the traumatic group (P = 0.576), while the strength ratio between the non-affected/affected sides was 0.805 in the nontraumatic group and 0.729 in the traumatic group (P = 0.224). CONCLUSION The functional results of traumatic rotator cuff repairs are similar to non-traumatic tears. Both outcomes are satisfactory.