Little League elbow
Overuse throwing injury of the elbow growth plate in children.
Little League elbow, also called medial epicondyle apophysitis, is an overuse injury from repetitive overhand throwing in kids. It mostly affects pitchers younger than sixteen. The throwing motion creates a valgus stress on the inner elbow, which can pull apart the growth plate (medial epiphyseal plate). Adults don’t get this because they lack that growth plate; instead, they tend to injure the ulnar collateral ligament. The term was introduced by Brogdon and Crow in a 1960 article, linking it to baseball. Compared to other sports, baseball players face higher risks of overuse injuries, especially from early sports specialization. The 1960 diagnosis raised questions about how much young players should pitch. In 2007, Little League Baseball set daily pitch limits to protect against overuse.
Signs and symptoms include aching or sharp pain on the inner elbow after pitching, sometimes with swelling. Over time, symptoms may come and go without warning, even at lower throwing speeds. Throwing velocity might drop.
The mechanism involves repetitive overhead throws damaging the growth plate at the elbow joint. This can appear as delayed plate closure, widening, or an acute fracture.
Diagnosis is usually based on physical exam and history, though X-rays are often abnormal and may show widening, fragmentation, or avulsion of the medial epicondyle apophysis. Key clues include repetitive, high-volume overhand throwing. The exam may show tenderness, swelling, limited elbow extension, and stiffness. X-rays can check if the growth plate is still open, reveal loose bone chips, or show early arthritis. They also help rule out other problems like a traumatic fracture of the medial epicondyle.
To prevent Little League elbow, athletes should stay active and fit year-round, with a 3–6 month break from throwing each year. Pitchers should follow Little League pitch count guidelines, including warmup and non-pitching throws. After pitching, they need one or two days of arm rest and should avoid other high-demand throwing positions like catcher. Proper throwing form and avoiding offspeed pitches also reduce elbow stress.
Treatment requires rest, rehab, and a gradual return to throwing. Athletes must stop all overhead throwing for 4–6 weeks, using ice for pain and swelling. NSAIDs are usually unnecessary with proper rest. Rehab involves physical therapy to improve elbow range of
- field
- Sports medicine, pediatric orthopedics
- known_for
- Overuse throwing injury in children, especially baseball pitchers
- affected_age_range
- 9–14 years old
- most_common_in
- Pitchers under age 10 who play year-round and throw excessively
Lore & Background
Little League elbow results from repetitive overhead throws that damage the epiphyseal plate at the bony elbow joint. The pitching motion creates a valgus stress on the inside of the elbow, which can cause an avulsion of the medial epiphyseal plate. It does not occur in adults because they lack growth plates; instead, adults more commonly injure the ulnar collateral ligament. The condition presents the same whether due to delayed plate closure, widening, or acute fracture.
Diagnosis is generally based on physical exam and history, as X-rays are typically normal. Signs include aching or sharp pain on the inside of the elbow after pitching, with or without swelling, and decreased throwing velocity. Over time, symptoms can reappear without warning even when restricting the athlete to lower velocity pitching. X-rays may be used to check if the growth plate is open, see if loose bone chips are present, or rule out other issues such as fractures from trauma.
Prevention includes staying active and fit all year with at least a 3–6 month break from throwing per year, following Little League Pitch Count guidelines, resting arms for a day or two after pitching, and avoiding other high-demand throwing positions like catcher. Proper throwing form and avoidance of offspeed pitches (curveballs and sliders) until high school age are also key. Treatment requires stopping all overhead throwing for 4–6 weeks, using ice, and undergoing physical therapy to regain range of motion and strength before gradually returning to throwing.
Reader's Guide
Little League elbow is significant as a classic example of an overuse injury in youth sports, highlighting the risks of early sports specialization and excessive pitching volume. The condition raised concerns as early as 1960 about how much youth players should be asked to pitch, leading to rule changes such as Little League Baseball's 2007 pitch count limits. Its recognition in popular culture, including an appearance in the Peanuts comic strip in 1963, underscores its cultural impact. Without timely activity changes, children may develop small fractures, loose bodies, bone chips, and become more susceptible to early arthritis and bone spurs. The condition remains a key focus for pediatric sports medicine, emphasizing the need for rest, proper mechanics, and age-appropriate pitching guidelines to prevent long-term elbow damage.
Did You Know?
- The name 'Little League elbow' was coined by Brogdon and Crow in a 1960 article.
- It does not occur in adults because they lack growth plates; adults instead commonly injure the ulnar collateral ligament.
- The ailment appeared in the Peanuts comic strip in 1963 when Charlie Brown received a diagnosis.
- In 2007, Little League Baseball began limiting the number of pitches a player could throw per day to protect against overuse injuries.
More in Overuse injuries 1-24
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