Massage therapy · Kitchener–WaterlooMedial Epicondyle Apophysitis in Children
Elbow, Wrist & Hand
What It Is
Little leaguer's elbow (medial epicondyle apophysitis) is a type of pain located on the side of the elbow that is closest to the body. It is an injury to the growth plate on the inner side of the elbow (Nationwide Children's Hospital, 2021). The elbow joint is made up of the humerus (upper arm bone) and the two forearm bones, the radius and the ulna (AAOS, n.d.). The epicondyles are the bony bumps at the lower end of the humerus. The bump that is closest to the body is the medial epicondyle. The muscles responsible for bending the wrist are attached to the medial epicondyle, while the muscles that straighten the wrist are attached to the lateral epicondyle. Repeated throwing makes the wrist-bending muscles pull again and again on the medial epicondyle, which puts stress on the growth plate there (Nationwide Children's Hospital, 2021; AAOS, n.d.).
In children, bones grow from growth plates, areas of growing tissue near the ends of the bones. The medial epicondyle has its own growth plate, which is a weak area. In this condition, that growth plate becomes irritated or injured through repeated stress (Nationwide Children's Hospital, 2021).
Medial Epicondyle Apophysitis in Children Anatomy
Not a diagnosis — for more information, contact me or another trusted healthcare provider.
Symptoms
How It Feels
Signs & Symptoms
Treatment
Self-Care & Treatment
How to Treat Medial Epicondyle Apophysitis in Children
Tips
- The best thing you can do to prevent the injury is to limit the amount of throwing the child does on a regular basis.
- Since the problem tends to occur most often in pitchers, guidelines should be followed for the number of pitches the child throws and the rest days they take afterwards (Nationwide Children's Hospital, 2021; AAOS, n.d.).
- Current Pitch Smart guidelines set a daily maximum of 75 pitches for ages 9 to 10, 85 pitches for ages 11 to 12, and 95 pitches for ages 13 to 14, with required rest days depending on how many pitches were thrown (MLB and USA Baseball, n.d.a; n.d.b).
- Children aged 9 to 12 shouldn't pitch more than 80 innings in any 12-month period, and children aged 13 to 14 no more than 100 innings (MLB and USA Baseball, n.d.a; n.d.b).
- Young pitchers should take at least 4 months off from throwing every year, with at least 2 to 3 of those months in a row, should not pitch on three days in a row, and should avoid playing catcher while not pitching (MLB and USA Baseball, n.d.a; n.d.b).
- Beyond limiting the amount of pitching, it is important that children warm up properly and know how to pitch with proper technique (MLB and USA Baseball, n.d.a; Nationwide Children's Hospital, 2021).
- If the child feels pain, they should stop throwing.
Treatment
My Approach
Little leaguer's elbow is a growth plate problem, so your child's doctor leads their care and decides when it's safe to throw again. I support that plan by easing tight forearm and shoulder muscles, keeping your child strong while throwing is on hold, and helping with a gradual return. Parents are welcome to sit in, with your child's agreement.
Please bring any X-ray or scan reports and notes from your child's medical team to the first visit. They're an important part of planning safe treatment for your child.
I start by assessing how the elbow, wrist and shoulder move, your child's strength and flexibility, and how much they've been throwing.
While Throwing Is on Hold
- Gentle hands-on work for the forearm, upper arm and shoulder, keeping pressure off the sore bump on the inner elbow
- I'll show you how to use ice safely at home
- Keeping your child active in ways that don't hurt the elbow
As It Settles
What to Expect
Typical Course
What I Focus On
Sources
References
- Nationwide Children's Hospital (2021) Little leaguer's elbow (medial epicondylar apophysitis). Available at: https://www.nationwidechildrens.org/conditions/sports-medicine-little-leaguers-elbow (Accessed: 7 October 2026).
- American Academy of Orthopaedic Surgeons (n.d.) Elbow injuries in the throwing athlete. OrthoInfo. Available at: https://orthoinfo.aaos.org/en/diseases--conditions/elbow-injuries-in-the-throwing-athlete (Accessed: 7 October 2026).
- MLB and USA Baseball (n.d.a) Pitch Smart: pitching guidelines ages 9-12. Available at: https://www.mlb.com/pitch-smart/pitching-guidelines/ages-9-12 (Accessed: 7 October 2026).
- MLB and USA Baseball (n.d.b) Pitch Smart: pitching guidelines ages 13-14. Available at: https://www.mlb.com/pitch-smart/pitching-guidelines/ages-13-14 (Accessed: 7 October 2026).