I'm not sure what you mean my temporarily. They will not give immediate
relieve. The relieve usually takes a couple of days to begin. The duration
of relieve will depend on the extent of the injury. Cortisone will reduce
swelling and allow more blood flow which will speed healing. Micro-tears
and small thickness tears will heal with cortisone and rest. However, if
you have a tear of any degree, the relief is only going to be temporary,
probably a couple of weeks and until you start using it again. Also, be
aware that MRI's often do not accurately diagnose the degree of a tear. On
my elbow for example, the MRI showed a partial tear, I believe the report
was 10-20%. The reality was that it was nearly full thickness with a huge
amount of scar tissue (worst the OS had seen according to him).
Any time you have a tendon repaired, it is 6-9m before the tendon regains
most of it's strength at the attachment, about a year bf it is 100%.
BTW, also forgot to mention that I had PRP injections done as an attempt to
avoid surgery. The OS also did PRP with the repair.