
isometric elbow flexion at 45 degrees with manual resistance from opposite hand, holding contraction before release.
Stand with elbow bend to 45 degrees with palm facing towards the ceiling. Place the other hand on the forearm just above the wrist. Try further bending the elbow against the resistance of other hand. Hold before releasing the reistance . Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.