Arm Health · Injury Prevention · Youth Pitching
Little League Elbow:
Little League Elbow:
Tips For Keeping Your
Young Pitcher Healthy
Little League elbow is one of the most common injuries in youth baseball — and one of the most preventable. Here is what every parent needs to know before it becomes a problem.
The short answer on Little League elbow
It is an overuse injury — and almost always preventable.
Little League elbow is caused by repetitive stress on the growth plate on the inside of a young pitcher's elbow. The bones, muscles, and tendons around the elbow are still developing in young athletes — making them significantly more vulnerable to overuse damage than adult arms. The good news: with proper rest, pitch count management, and early intervention, most cases resolve completely without surgery.
40%
Of adolescent pitchers experience elbow pain at some point during their youth career
9–14
Peak age range for Little League elbow — growth plates are most vulnerable during this window
15%
Increase in youth baseball elbow injuries between 2011 and 2016 as year-round play expanded
What is Little League elbow?
Little League elbow — medically known as medial epicondyle apophysitis — is an overuse injury that affects the growth plate on the inner part of a young athlete's elbow. The growth plate is the area of developing cartilage at the end of long bones where new bone tissue is produced. In young players these growth plates have not yet hardened into solid bone, making them significantly more vulnerable to repetitive stress than the mature tissue of an adult athlete.
Every overhead throw places valgus stress on the medial elbow — tension on the inside of the joint during the acceleration phase of the throwing motion. For an adult pitcher this stress is absorbed by mature ligaments and hardened bone. For a 10-year-old pitcher with open growth plates, that same stress is being absorbed by tissue that is still forming. Enough repetitions of that stress without adequate rest leads to inflammation, irritation, and eventually damage to the growth plate itself.
While the name says Little League, the injury is not limited to pitchers. Catchers, infielders, and outfielders who throw repeatedly are also at risk — though pitchers bear the highest volume of stress. It has also been documented in youth volleyball and football players for the same reason: repetitive overhead throwing motions.
Dr. James Andrews — the most respected voice on this injury
Dr. Andrews is the most recognized sports medicine surgeon in baseball, having performed Tommy John surgery on dozens of MLB pitchers. His message on youth arm injuries is consistent and urgent: the epidemic of arm injuries in young players is driven by overuse, year-round play, and specialization at young ages. The video above covers his perspective directly. It is worth 10 minutes of any baseball parent's time.
Symptoms — what to watch for
The challenge with Little League elbow is that young athletes are notorious for minimizing symptoms in order to keep playing. A 12-year-old who wants to stay in the rotation will tell you his arm is fine when it is not. Know the signs yourself so you do not have to rely entirely on your player to self-report.
Pain on the inside of the elbow
Medial elbow pain — on the bump on the inside of the elbow — is the primary symptom. It may appear only during throwing at first, then progress to pain with any arm movement.
Swelling around the elbow
Visible or palpable swelling on the medial side of the elbow is a clear signal that inflammation is present and the arm needs rest immediately.
Difficulty fully extending the arm
If your player cannot fully straighten their arm or has reduced range of motion compared to their non-throwing arm, this is a significant warning sign that warrants medical evaluation.
Elbow stiffness or locking
A stiff elbow that locks or catches during movement can indicate bone chip or growth plate involvement — a more serious presentation that requires imaging.
Decreased throwing velocity
This is often the first objective sign and one parents can track with a radar gun. The arm unconsciously reduces effort to protect itself before pain becomes obvious. A sudden unexplained velocity drop warrants attention.
Pain that recurs after rest
Soreness that clears between outings is normal muscle fatigue. Pain that returns immediately upon resuming throwing — even light throwing — signals the injury has not resolved with rest alone.
Stop immediately if your player reports any of these
Do not pitch through it. Continuing to throw with Little League elbow converts a manageable overuse condition into potential growth plate fracture or ligament damage requiring surgery. The recovery time for caught-early Little League elbow is 4–6 weeks. The recovery time from growth plate surgery is measured in months. Stop throwing, rest the arm, and consult a physician if symptoms do not resolve quickly.
When to see a doctor
If elbow pain does not improve with 4–6 weeks of complete rest from throwing, it is time to see an orthopedist or sports medicine physician who understands throwing injuries specifically. The doctor will examine the elbow for swelling and range of motion and will likely order an X-ray to assess the growth plate and rule out fracture or bone chip involvement.
Most cases of Little League elbow are treated successfully with rest and physical therapy. Some more severe cases may require surgery to remove loose bone fragments or reattach ligaments — typically via arthroscopy, which is minimally invasive with shorter recovery times than open procedures. Early intervention consistently produces better outcomes than letting the injury progress.
Heat vs ice for Little League elbow
Ice is recommended immediately after activity or when symptoms are present — apply for 15–20 minutes to reduce inflammation. Heat can be used before activity to relax and loosen tissue and improve blood flow. Do not apply heat to an acutely inflamed or swollen elbow. When in doubt, ice first and consult your physician about when to transition to heat therapy.
Prevention — the things that actually reduce risk
✓
Follow pitch count guidelines strictly. Not as a suggestion — as a rule. Track pitch counts across every team your player is on. A player pitching for a school team and a travel team simultaneously can hit their weekly limit across two coaches who have no visibility into each other's workloads. → See our full pitch count guide
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Never pitch on back-to-back days. Rest between outings is when the growth plate tissue repairs itself. Consecutive-day pitching — even at low pitch counts — is one of the most documented risk factors for elbow injuries in youth players.
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Delay breaking pitches until the appropriate age. The American Academy of Pediatrics recommends no curveballs before age 14 and no sliders before age 16. Breaking pitches place significantly more valgus stress on the elbow than fastballs and change-ups. The growth plate is not ready for that stress at young ages regardless of the player's apparent strength.
✓
Take a real off-season — minimum 2–4 months off throwing per year. Year-round baseball eliminates the recovery window the arm needs. Two to four consecutive months with no competitive pitching is the single most effective structural protection available for a young arm.
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Proper warm-up before every throwing session. Dynamic stretching, light jogging, and progressive throwing from short distance are not optional. A cold arm under sudden load tears. The J-Band routine specifically prepares the rotator cuff and supporting muscles before high-effort throwing.
✓
Strengthen the muscles around the elbow. Forearm strength specifically supports the UCL during the throwing motion. Grip strengtheners, wrist curls, and band exercises all build the muscular support that protects the growth plate from excessive stress.
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Play multiple sports. Multi-sport athletes develop complementary muscle groups and allow the arm to rest. Single-sport specialization before high school is consistently associated with higher overuse injury rates in every sport medicine study on the topic.
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Use proper mechanics. Work with a qualified pitching coach to ensure your player is using their full kinetic chain — legs, hips, core, torso — rather than arm-only mechanics. Players who throw with their arm rather than their whole body place exponentially more stress on the elbow with every pitch.
✓
Create an environment where your player can report pain without consequences. Young athletes hide pain to stay in the lineup. If your player knows that telling you about arm soreness means sitting out, they will not tell you. Make the conversation safe.
Official pitch count guidelines — by age
These are the official Pitch Smart guidelines from USA Baseball and MLB. Rest requirements are based on pitches thrown in a single day across all games and activities.
| Age | Daily Max | 0 Rest Days | 1 Day Rest | 2 Days Rest | 3 Days Rest | 4 Days Rest |
|---|---|---|---|---|---|---|
| 7–8 | 50 | 1–20 | 21–35 | 36–50 | N/A | N/A |
| 9–10 | 75 | 1–20 | 21–35 | 36–50 | 51–65 | 66+ |
| 11–12 | 85 | 1–20 | 21–35 | 36–50 | 51–65 | 66+ |
| 13–14 | 95 | 1–20 | 21–35 | 36–50 | 51–65 | 66+ |
| 15–16 | 95 | 1–30 | 31–45 | 46–60 | 61–75 | 76+ |
| 17–18 | 105 | 1–30 | 31–45 | 46–60 | 61–75 | 76+ |
Recovery tools that help — Kinetic Arm and Marc Pro
Prevention is the most important intervention. But for players who are already experiencing arm soreness or who pitch at high volume, recovery tools can meaningfully reduce the risk of overuse injury developing into something more serious.
🦾 Arm Protection — Used in games and practice
The Kinetic Arm K2 Sleeve
The Kinetic Arm K2 Sleeve uses MuscleWeb technology with medical-grade polymers to provide directional support to the shoulder and elbow during the throwing motion — specifically at the high-stress phases where Little League elbow damage accumulates. It is legal for game use, worn under the uniform, and available in youth ($129.99) and adult ($249.99) sizes. HSA/FSA eligible via Truemed.
We have used the youth sleeve with our son from age 10. The pattern we saw — arm pain emerging when we stopped using it during the size transition — made believers out of us.
Visit The Kinetic Arm →Marc Pro — electrical muscle stimulation for arm recovery
Marc Pro is the official recovery technology partner of Perfect Game and is used in all 30 MLB training rooms. It uses non-fatiguing electrical muscle stimulation to increase blood flow, flush metabolic waste, and accelerate recovery between throwing sessions — without taxing already-tired muscles the way a traditional TENS unit does. Driveline Baseball uses Marc Pro as the most-used recovery device in their facility. → See our full Marc Pro review
Frequently asked questions
How severe is Little League elbow?
Little League elbow ranges from mild discomfort and inflammation to growth plate fracture requiring surgery, depending on how long it progresses before treatment. Most cases caught early are treated successfully with rest and physical therapy within 4–8 weeks. Cases that go untreated can lead to bone chip formation, chronic elbow pain, or premature growth plate closure that affects arm development long-term.
Can a player play with Little League elbow?
No. Continuing to throw with Little League elbow accelerates growth plate damage and significantly increases the risk of requiring surgery. Stop throwing immediately when symptoms are present, rest the arm, and consult a physician before returning to any throwing activity.
How long does Little League elbow take to heal?
Recovery time depends on severity. Mild cases with prompt rest typically resolve in 2–6 weeks. More significant growth plate involvement can require 6–12 weeks or longer. Cases requiring surgery are measured in months. The earlier the injury is identified and throwing is stopped, the faster and more complete the recovery.
At what age does Little League elbow usually occur?
Little League elbow most commonly affects players between ages 9 and 14 — the window when growth plates in the elbow are most actively developing and most vulnerable to overuse stress. It can occur as young as age 8 in high-volume throwers and as late as age 16 in players with delayed skeletal maturity.
Why does my 9-year-old's elbow hurt when throwing?
Elbow pain in a 9-year-old pitcher is commonly caused by Little League elbow — repetitive stress on the growth plate from throwing. Stop throwing and rest the arm. If pain does not resolve within a few days of complete rest, consult a physician. Early evaluation is always better than waiting to see if it gets worse.
What is the difference between Little League elbow and Tommy John surgery?
Little League elbow is a growth plate injury caused by overuse in young players with open growth plates. Tommy John surgery addresses a torn or damaged ulnar collateral ligament (UCL) — a ligament that holds the elbow together during the throwing motion. Tommy John is typically a later-stage injury that can develop from years of accumulated overuse damage, including untreated or repeated Little League elbow episodes. The two conditions are related — untreated youth arm injuries can contribute to UCL damage later in a player's career.
Protect the arm now — the career is long
Little League elbow is one of the most preventable injuries in youth sports. The pitch count guidelines exist because the data is clear about what causes it. The AAP age recommendations for breaking pitches exist because the research on growth plate stress is unambiguous. The off-season rest recommendations exist because the arm needs it.
The players who arrive at high school with healthy arms are the ones whose parents took the pitch count seriously at 10U. The arm your kid has at 13 is the arm they will be throwing with for the rest of their career. Protect it like it matters — because it does.