I am not a doctor and do not claim to have any researched knowledge about your question.
But I did stay at a Holiday Inn last night. LOL
I had a tear in a tendon on my foot. The foot doctor told me as follows:
During the healing process 6-8 weeks, the tendon grows back with tissue that has the consistency of snot (mucous). It is a very soft tissue and will tear very easily. So you need to immobilize the tendon while it is healing. If you strain it or move it very much it will tear while it is in this soft tissue state. As it begins to harden you can very slowly introduce slight movement to it. For example he had me draw the alphabet by pointing my toe in the air and drawing each imaginary letter. Every few days you can add another set of alphabet drawing to the exercise. If you strain it and tear the healing tissue, you will lengthen the time of recovery. Because it will have to start all over again. When completely healed it will not be as strong as it was before being damaged. My tendon was badly torn but not completely separated. That would probably require surgery to reattach.
That is all I know about your question. I also would be interested in hearing about this from someone with more knowledge of the subject.