'Slipping' Tendons After Bilateral Tendonitis

From general stupidity, under-eating and over-training I managed to get pretty bad tendonitis bi-laterally last year. It was compounded when I tightened some screws on a power-rack ironically - I went too hard and after that the tendons just below the elbow joint on the inside hurt whenever I curl or row, and sometimes it feels like they’re ‘slipping’ and rolling. If I try to hold anything while my hand is pronated I get the same feeling, and god forbid I try to protate the arm holding something.

It is mostly by the pronator teres and supinator, at the insertion.

Any ideas on how to rehab?