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91.
《Journal of ultrasound in medicine》2017,36(10):2125-2131
A novel technique, ultrasound‐guided injection of the temporalis tendon in adults, is described. Ultrasound‐guided injection of the temporalis tendon is based on visualization of the temporalis muscle, temporalis tendon, and coronoid process. A practical step‐by‐step guide to doing the procedure is given. This technique is effective and reproducible. Two patients successfully treated with this technique will be briefly discussed. The anatomic location and size of the temporalis tendon make it mandatory to use ultrasound to ensure precision. 相似文献
92.
《Connective tissue research》2013,54(2):171-177
Musculoskeletal soft tissue repair is often a slow process that may be complicated by aging, thus we investigated the mitogenic response of young and old rat patellar tendon (PT) explants to platelet-derived growth factor-AB (PDGF-AB). Bilateral PT explants from young (4 months) and old (29 or 36 months) rats of two strains (Fisher 344 and Fisher-Brown-Norway) were cultured for 72 h in platelet-poor horse serum in the presence or absence of 100 ng/ml recombinant human PDGF-AB. The explants were radiolabeled with [3H]-TdR for the final 24 h in culture. Tendon cellularity and DNA synthesis data were analyzed by multiple factor ANOVA (age, strain, and side), Mann-Whitney t-test (cellularity and DNA synthesis), and a sign test (proliferative response to PDGF). Tendon cellularity declined significantly with age in both strains (p < 0.05), while both young and old patellar tendon fibroblasts in both strains had a significant (>100%) increase in DNA synthesis with the addition of PDGF (p < 0.05). Although there was a trend to lower proliferative responses in older tendons, the differences were not significant. Autoradiographic analysis of labeling indices in F344 tendons showed a diminished responsiveness to PDGF (p < 0.04, ANOVA). Strain and side response on a per cell or tissue weight basis were not significant factors. Under appropriate experimental conditions, these two animal models of aging showed declines in responses to high levels of PDGF, suggesting that the PT reflects an age-dependent diminished capacity for wound repair. 相似文献
93.
严重的肌腱缺损带来严重的社会及经济负担,传统治疗方法效果欠佳。肌腱组织工程为治疗严重的肌腱
缺损提供了新的方向。脂肪干细胞较骨髓干细胞有来源广泛,分离过程简单、安全等优点,具有向多种细胞分化的
潜能及强大的自我增殖能力。脂肪干细胞在生长因子、周期性张力及氧分压等适宜刺激下可分化为肌腱细胞,分泌
肌腱细胞外基质,形成组织化工程肌腱以修复严重缺损的肌腱,改善因肌腱缺损导致的功能障碍。 相似文献
缺损提供了新的方向。脂肪干细胞较骨髓干细胞有来源广泛,分离过程简单、安全等优点,具有向多种细胞分化的
潜能及强大的自我增殖能力。脂肪干细胞在生长因子、周期性张力及氧分压等适宜刺激下可分化为肌腱细胞,分泌
肌腱细胞外基质,形成组织化工程肌腱以修复严重缺损的肌腱,改善因肌腱缺损导致的功能障碍。 相似文献
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Soo Y. Kim Robert R. Bleakney Tim Rindlisbacher Kajeandra Ravichandiran Benjamin W.C. Rosser Erin Boynton 《Clinical anatomy (New York, N.Y.)》2013,26(2):228-235
Architectural changes associated with tendon tears of the supraspinatus muscle (SP) have not been thoroughly investigated in vivo with the muscle in relaxed and contracted states. The purpose of this study was to quantify the geometric properties within the distinct regions of SP in subjects with full‐thickness tendon tears using an ultrasound protocol previously developed in our laboratory, and to compare findings with age/gender matched normal controls. Twelve SP from eight participants (6 male/2 female), mean age 57 ± 6.0 years, were investigated. Muscle geometric properties of the anterior region (middle and deep parts) and posterior region (deep part) were measured using image analysis software. Along with whole muscle thickness, fiber bundle length (FBL) and pennation angle (PA) were computed for architecturally distinct regions and/or parts. Pathologic SP was categorized according to the extent of the tear in the tendon (with or without retraction). In the anterior region, mean FBL of the pathologic SP was similar with normal controls; however, mean PA was significantly smaller in pathologic SP with retraction compared with normal controls, in the contracted state (P < 0.05). Mean FBL in the posterior region in both relaxed and contracted states was significantly shorter in the pathologic SP with retraction compared with normal controls (P < 0.05). Findings suggest FBL changes associated with tendon pathology vary between the distinct regions, and PA changes are related to whether there is retraction of the tendon. The ultrasound protocol may provide important information on architectural changes that may assist in decision making and surgical planning. Clin. Anat., 2013. © 2012 Wiley Periodicals, Inc. 相似文献
99.
Ettore Vulcano Jonathan T. Deland Scott J. Ellis 《Current reviews in musculoskeletal medicine》2013,6(4):294-303
Adult acquired flatfoot deformity (AAFD), embraces a wide spectrum of deformities. AAFD is a complex pathology consisting both of posterior tibial tendon insufficiency and failure of the capsular and ligamentous structures of the foot. Each patient presents with characteristic deformities across the involved joints, requiring individualized treatment. Early stages may respond well to aggressive conservative management, yet more severe AAFD necessitates prompt surgical therapy to halt the progression of the disease to stages requiring more complex procedures. We present the most current diagnostic and therapeutic approaches to AAFD, based on the most pertinent literature and our own experience and investigations. 相似文献
100.
Alexander H. Toledo 《Journal of investigative surgery》2013,26(6):379-380
Four methods of allograft tendon-to-muscle anastomosis were tested in single cycle distraction to failure using 10 anastomosed ovine calcaneal tendon-biceps brachii units. The tendon-muscle units were compared to intact ovine biceps brachii muscle units. Methods of tendon-to-muscle anastomosis were derived from modifications of existing muscle tendon repair and tenorrhaphy techniques. Load to failure (N), stiffness (N/cm), distraction (cm), and modes of failure were recorded. Of the four methods tested, the side-to-side technique demonstrated the highest load to failure (152.1 N), the greatest stiffness (17.6 N/cm), the least distraction (2.99 cm) before failure, and the least amount of muscle tissue trauma at failure. Results indicate that, of the methods tested, the side-to-side technique offers the greatest initial stability and should therefore allow adequate revascularization and healing of the anastomosis site. 相似文献