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Questions tagged [tendons]

A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension.

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15 views

Does any tendon in humans receive a high amount of blood supply? Or is the property of not receiving a large blood supply a constant across tendons?

I read on https://www.physiocomestoyou.co.uk/blog/all-you-need-to-know-about-tendons/ (mirror): [Tendons] do not have a large blood supply. Does any tendon in the human body receive a high amount ...
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Do tenocytes move around in a healthy tendon or do they stay at the same location?

The 2018 study {1} mentions that: The healing process of injured tendons includes tenocyte migration which occurs from intact regions of tendon into the wound site. Do tenocytes move around ...
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Which hardware specification should one be looking for to optimize the visualization of a tendinopathy through ultrasound?

The 2019 study {1} reports that hip abductor tendon pathology is better visualized by 3.0 Tesla MRIs than by 1.5 Tesla MRIs. The 2014 study {2} also mentions the usefulness of high teslas for tendon ...
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Why do calcific tendinopathies mostly affect the supraspinatus tendon?

I read on {1}: Calcific tendonitis or hydroxyapatite deposition disease is a common disorder and the site of occurrence is around the shoulder mainly within the supraspinatus tendon and at a ...
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For how long is the gene expression altered in tenocytes' nuclei following changes in mechanical load, and which genes are affected?

I read in {1}: The matrix is far more conspicuous than the cells. However, it is now widely recognised that the cellular elements hold the key to understanding development, repair and the ability ...
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What causes tenocytes to migrate from intact regions of tendon into the wound site, and how do they move?

The 2018 study {1} mentions that: The healing process of injured tendons includes tenocyte migration which occurs from intact regions of tendon into the wound site. What causes tenocytes to ...
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How does the structure of tendons change as they become stronger?

I understand the basic structure of tendons, but I wonder how a tendon becomes stronger via exercise. Do the collagen fibers become more aligned/numerous/dense/etc.? Is the tendon expected to become ...
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Do any animal have a tendon repair process that is more efficient than in humans?

Tendon injuries are notoriously slow to heal for humans, and quite often do not heal properly due to a variety of reasons. Do any animal have a tendon repair process that is more efficient than in ...
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Why does it take 24 hours for tendons to give feedback on whether the loads they received were excessive?

I heard in this interview of Jill Cook (tendon researcher) on https://youtu.be/GKkSp-TlofI?t=230: Tendons talk to you 24 hours later. So what happens if if I put load on a tendon today, it will ...
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What causes a tendinopathy to calcify?

I read in this 2012 research paper {1}: The aetiopathogenesis of CT [calcific tendinopathy] is still controversial, but seems to be the result of an active cell-mediated process and a localized ...
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Do tendons thickened due to a tendon injury/pathology have the same strength as “normal” tendons?

I read in this 2015 study {1}: This study is the first to show that pathological tendons have sufficient levels of aligned fibrillar structure. Pathological tendons may compensate for areas of ...
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Why are isometric contractions more analgesic than isotonic contractions for tendon pain?

According to a randomized clinical trial {1}, isometric contractions are more analgesic than isotonic contractions for tendon pain. The explanation they give is as follows: The antinociceptive ...
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How does the strength of 3D printed tendons compare to original tendons?

There have been some attempts such as {1,2} to 3D-bioprint tendons. How does the strength of 3D-bioprinted tendons compare to original tendons? I am mostly interested in human tendons. References: {...
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Why does the ratio type III collagen:type I collagen increase after a tendon injury?

I read on {1}: Type III collagen has accumulated at the rupture site [of human Achilles tendon] probably due to microtraumas and the subsequent healing process. […] The increased content of type ...
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Does a full tear of the gluteus minimus tendon result in a long-lasting inflammatory response?

Does a full tear of the gluteus minimus tendon result in a long-lasting inflammatory response? This answer mentions: An isolated gluteus minimus tear still causes functional problems because of ...
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Does a full tear of the gluteus minimus tendon has any functional implications?

From what I read on Wikipedia, all functions of the gluteus minimus are mirrored by the gluteus medius. Additionally, the gluteus medius is larger than the gluteus minimus (see comparative images here)...
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Where can I find the list of all tendons in the human body?

https://www.healthcentral.com/article/aging-can-take-major-toll-on-womens-tendons (mirror) claims that: There are about 4,000 tendons throughout the body. This claim is echoed by a fair amount of ...
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What's the subpatellar tendon?

I read in Thomas Myers book Anatomy Trains: Although the muscles themselves have attachments within the anterior compartment to the tibia, fibula, and interosseous membrane, the next station ...
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Is “muscular attachment” synonymous to tendon? (when talking about the insertion of glutei medius and minimus to greater trochanter of the femur)

I have read the following two terms in an MRI report (both points refer to the insertion of gluteus medius/minimus to greater trochanter of the femur): mild degeneration of the muscular attachment ...
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1answer
226 views

Where does the gluteus medius attach to the greater trochanter compared to the gluteus minimus attachment?

Where does the gluteus medius attach to the greater trochanter of the femur compared to the gluteus minimus attachment? Is it above, below, next to it, etc.? Ideally I'd like to know the distance as ...
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Is the tendon width determined by genetic predisposition, and if so, is genetics the sole factor?

Tendons' widths vary widely across humans. E.g.: {1}: "the mean patellar tendon width was 26.10mm (SD = 3.31; range 18.33mm-33.33mm)" {2}: "Size of the patellar tendon width, measured at the same ...
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Are tendons and ligaments classified under the muscular or bone system?

Are tendons and ligaments classified under the muscular system or the bone system? Basically they are not bones or muscles and that's why I have doubt.
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Why is the central tendon of diaphragm called a tendon?

Why is the central tendon of diaphragm called a tendon when it does not connect the diaphragm to any bone?
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What is the distance between the insertion of the distal end of the bicep tendon and the head of the radius?

I was unable to find a source that could provide a measurement for the distance between the insertion of the distal end of the bicep tendon and the head of the radius. Does anyone know a source that ...
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77 views

How correlated are the lengths of tendons in different part of a human body?

How correlated are the lengths of tendons in different part of a human body? E.g., if the we consider two humans, A, and B. Human A has a patellar tendon of length 2 cm, and human B has a patellar ...
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What is the difference between sinew and tendon?

I wonder what the difference between sinew and tendon is. I searched for it but didn't get any clear answer: https://www.quora.com/Whats-the-difference-between-sinew-and-tendon: They are often ...
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Is there any stem cell or biogel method that exist for muscle and tendon lengthening?

Is there any stem cell or biogel method that exist for muscle and tendon lengthening? It is known that height surgery is limit to six inches with two surgeries and three inches each, it is also true ...
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110 views

Why some muscles have more tendons than others?

Very interesting examples to me are Trapezius or Latissimus - they both have places with more tendons than muscles. Taking into account that now they contract weaker and slower with all these tendons, ...
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Lifespan of connective tissue cells

This post is regarding a follow up on my initial post on "Properties and life cycle of chondrocytes and tenocytes". I am elaborating on my question on the lifespan of tenocytes and chondrocytes. ...
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What are tendons made of specifically

From what I read on wikipedia they are made of collagen. Collagen is just a protein. Right? How is this collagen structured (I imagine like fibers). Aren't there cells in this fibers as well? From ...
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Can NSAIDs impact negatively the healing of tendons?

There are a number of articles regarding nonsteroidal anti-inflammatory drugs (NSAIDs) having a negative effect on healing conditions like tendonosis and tendinitis. From what I understand the ...
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393 views

Which cells are responsible for the extracellular matrix remodeling?

I am studying a case of tendinopathies induced by an alteration of how the extracellular matrix is being remodeled. From my understanding there has to be a careful balance of MMP (metallproteinases) ...
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How exactly does long-term tension (over months) build up in the ligaments, tendons, muscles?

And is there any basis for believing that massage relieves that tension?