Bartolo Colón active players as of June 11, 2008. Colón did not pitch in 2010 due to ongoing right shoulder and elbow pain and damage to the rotator cuff, ligaments and tendons. In March 2010, he received a transplant of stem cells to repair the damaged tissues in his right shoulder. The orthopedic surgeon who performed the surgery said he had used human growth hormone in previous surgeries of the same type but not with Colón. The surgery was scrutinized by MLB but no wrongdoing was found. Colón then played in the Pre-World Championship in Puerto Rico, winter ball with the Aguilas
Rotator cuff tear shows the participants that were the ages of 70–90 years old had a rate of rotator cuff tears that were 1 to 5. The participants who were 90+ years old the frequency of a rotator cuff tear jumped to 1 to 3. This study shows that with an increase in age there is also an increase in the probability of a rotator cuff tear. By the age of 50 10% of people with normal shoulders have a rotator cuff tear. According to a study in the Journal of Orthopaedics the prevalence of a rotator cuff tear was considerably greater in