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Sujet: Patellar Tendon Enthesis – 282259 | Apedys …

26/03/2016 · Effect of training and sudden detraining on the patellar tendon and its enthesis in rats.

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Patellar tendon enthesis - Pop art essay topics

Background. Different conditions may alter tendon characteristics. Clinical evidence suggests that tendon injuries are more frequent in athletes that change type, intensity and duration of training. Aim of the study was the assessment of training and especially detraining on the patellar tendon (PT) and its enthesis. Methods. 27 male adult Sprague-Dawley rats were divided into 3 groups: 20 rats were trained on a treadmill for 10 weeks. Of these, 10 rats were euthanized immediately after training (trained group), and 10 were caged without exercise for 4 weeks before being euthanized (de-trained group). The remaining 7 rats were used as controls (untrained rats). PT insertion, structure (collagen fiber organization and proteoglycan, PG, content), PT thickness, enthesis area, and subchondral bone volume at the enthesis were measured by histomorphometry and microtomography. Results. Both PG content and collagen fiber organization were significantly lower in untrained and detrained animals than in trained ones (p

Patellar tendon enthesis, Homework Writing Service

Different conditions may alter tendon characteristics. Clinical evidence suggests that tendon injuries are more frequent in athletes that change type, intensity and duration of training. Aim of the study was the assessment of training and especially detraining on the patellar tendon (PT) and its enthesis.

Entheses, enthesitis and enthesopathy | Arthritis …

(2006) Regional variations in human patellar trabecular architecture and the structure of the proximal patellar tendon enthesis. Journal of Anatomy 208:1, 47-57.

19 year old volleyball player reports knee pain with flexion. Sagittal (left) and axial (right) proton density fat suppressed images: edema/fluid signal intensity is present deep to the prepatellar quadriceps continuation (arrows), consistent with partial separation from the patella. This region was normal on MR images obtained 15 months earlier.

Most of the quadriceps tendon inserts on the anterosuperior surface of the patella. Continuity of the quadriceps and patellar tendons is accomplished by distal extension of fibers of the rectus femoris tendon to insert into the bone at the anterior surface of the patella. This is a chondroapophyseal type of attachment (an enthesis) in which tendon fibers transform into fibrocartilage at the insertion. This layer of fibrocartilage is thickest at the quadriceps tendon insertion on the anterosuperior patellar surface (0.136 mm), thinner at the patellar tendon attachment (0.023 mm) and thinnest at the prepatellar quadriceps continuation attachment to the anterior patellar surface (0.004 mm)33. It has been postulated that this layer of fibrocartilage is so thin because its function is to diminish friction between the patella and overlying tendinous fibers rather than to anchor the tendon to the patella33. Separation of the prepatellar quadriceps continuation from the anterior patellar surface has been observed on MRI in patients with anterior knee pain (Figure 26). This appears as a thin layer of fluid anterior to the patella with normal quadriceps and patellar tendons. Whether this is due to injury or degeneration and the clinical significance have not been established

The skeletal attachment of tendons—tendon ..

Patellar Tendon Enthesis

In fact, there is a paucity of data examining the impact that cessation of training may have on tendon. In practice, we do not fully understand how tendons respond to a period of training followed by sudden detraining. On the other site, clinical evidence suggests that tendon injuries are more frequent in athletes that change type, intensity and duration of training. Thus, the aim of the present research was the study of PT and its enthesis after training and especially following sudden discontinuation of activity. We evaluated the histological characteristics of the patellar tendon (PT) and its enthesis in trained, detrained, and untrained rats. Because both the magnitude and the type of load transmission across the joint surface are likely to change with exercise and with tendon health status we measured subchondral bone thickness, bone area and bone volume. Also bone volume, as an indicator of bone adaption, was evaluated by microtomography at the level of the subchondral bone connected to the enthesis.

Jumper’s Knee refers to a spectrum of disorders that occur in patients with degeneration and/or tearing of the patellar tendon. It is one of the most common tendon abnormalities in athletically active individuals, and as the name implies, is most common in jumping athletes such as basketball and volleyball players. In the non-athlete, rheumatoid arthritis, the seronegative arthropathies, and treatment with exogenous steroids are known to predispose to this condition.

TY - JOUR. T1 - Effect of training and sudden detraining on the patellar tendon and its enthesis in rats. AU - Frizziero,Antonio. AU - Fini,Milena
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  • Background:A patellar tendon injury is a common injury in sports

    the patellar tendon enthesis.

  • 19/01/2011 · SpringerLink

    v.208(4); 2006 Apr

  • Detrained group: patellar tendon collagen fibers devoid of staining

    27/07/2016 · Where tendons and ligaments meet bone: attachment sites (‘entheses ..

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Enthesitis and Enthesopathy Explained - Verywell

AB - The purpose of this study was to determine the effect of the diabetic phenotype on the mechanical properties of the native patellar tendon and its enthesis. Diabetes was induced via intraperitoneal injection of streptozotocin in Lewis rats. Control (n= 18) and diabetic animals (n= 20) were killed at 12 and 19 days for analysis. Statistical comparisons were performed using Student's t-tests and a two-tailed Fisher test with significance set at p

Patellar Tendinopathy | SpringerLink

The tear usually happens further forward than where the pain of plantar fasciitis usually occurs. It is often found 2 to 4 centimeters in front of the attachment of the plantar fascia into the calcaneus (heel bone). The patient will often recall feeling or hearing a "pop". When examined there may be pain when the toes are passively bent upwards (dorsiflexed). The usual treatment for this injury is non-weight bearing for 1 - 3 weeks in a cast and total casting for about 4 - 6 weeks. Full recovery will take 7 to 12 weeks.

Biology and augmentation of tendon-bone insertion …

N2 - Background. Different conditions may alter tendon characteristics. Clinical evidence suggests that tendon injuries are more frequent in athletes that change type, intensity and duration of training. Aim of the study was the assessment of training and especially detraining on the patellar tendon (PT) and its enthesis. Methods. 27 male adult Sprague-Dawley rats were divided into 3 groups: 20 rats were trained on a treadmill for 10 weeks. Of these, 10 rats were euthanized immediately after training (trained group), and 10 were caged without exercise for 4 weeks before being euthanized (de-trained group). The remaining 7 rats were used as controls (untrained rats). PT insertion, structure (collagen fiber organization and proteoglycan, PG, content), PT thickness, enthesis area, and subchondral bone volume at the enthesis were measured by histomorphometry and microtomography. Results. Both PG content and collagen fiber organization were significantly lower in untrained and detrained animals than in trained ones (p

Tendinopathies and enthesopathies: the bugbear of …

N2 - The purpose of this study was to determine the effect of the diabetic phenotype on the mechanical properties of the native patellar tendon and its enthesis. Diabetes was induced via intraperitoneal injection of streptozotocin in Lewis rats. Control (n= 18) and diabetic animals (n= 20) were killed at 12 and 19 days for analysis. Statistical comparisons were performed using Student's t-tests and a two-tailed Fisher test with significance set at p

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