4. Muscle Weakness
The job of the tendons is to connect the muscle to the bone. When the tendon is injured, the muscles in the area of the tendon can often become weaker as the result. If the problem is not corrected right away, the muscle can atrophy, and it may take some time to regain strength in the muscle. With the weakening of the muscle, you may get in a habit of avoiding using the muscle and it can get even weaker.
This can lead to a vicious cycle because as the muscles and tendons get weaker, they can be prone to further injury. This can be particularly true in the elbows, knees, and shoulders. One way to avoid tendonitis is to exercise frequently, both aerobic activity and strength training. Warm-up before exercising to avoid injury. Overstrain can also cause tendonitis, so it is important to find a balance.