My son tore the rotator cuff in his right shoulder. The doctor called this a âmediumâ tear. What does this mean?
Four tendons around the shoulder joint make up what is called the rotator cuff. Overuse or trauma can lead to injury of one or more of these tendons. The tears can be graded from mild to moderate to severe. Another way to say this is âsmall,â âmedium,â and âlarge.â
Doctors rely on magnetic resonance imaging (MRI) to make this decision. A small or mild tear is less than Â¼ inch (less than one centimeter). A medium or moderate tear is from Â¼ to Â¾ inches long (one to three centimeters). A large or severe tear is longer than Â¾ of an inch (three to five centimeters).
Another way to look at this is whether or not the tear goes all the way through the tendon. Using this method, there are two kinds of tears: partial-thickness and full-thickness. A small or medium tear goes through part, but not all, of the tendon. A severe tear extends through the entire (full-thickness) of the tendon.
Erik L. Severud, MD, et al. All-Arthroscopic Versus Mini-Open Rotator Cuff Repair: A Long-Term Retrospective Outcome Comparison. In Arthroscopy. March 2003. Vol. 19. No. 3. Pp. 234-238.
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