THROWING SHOULDER INJURY (BASEBALL SHOULDER)

Throwing Shoulder Injury (Baseball Shoulder)

Thrower's Shoulder (Internal Impingement) refers to shoulder pain and functional impairment associated with the throwing motion, commonly seen in baseball and softball players. This condition occurs when the tendons of the rotator cuff muscles are compressed within the shoulder joint against the glenoid of the scapula.

Main Characteristics

[Causes]
・Repetitive Throwing Motion: The main cause is the excessive rotational movement of the shoulder during throwing or repetitive actions, compressing the tendons.
・Lack of Shoulder Flexibility: If the shoulder joint lacks flexibility, the tendons are more likely to be compressed against the acromion or the glenoid cavity.
・Muscle Imbalance: If there is an imbalance in shoulder muscle strength or specific muscles are weak, the shoulder joint may become unstable, leading to impingement.

[Symptoms]
・Pain: Pain occurs at the back or inner side of the shoulder, especially during throwing motions or lifting the arm.
・Restricted Range of Motion: The range of motion in the shoulder is limited, and pain may increase, particularly when pulling the arm back.
・Night Pain: Pain can be felt while sleeping, which can disrupt sleep.

[Diagnosis]
・Medical Interview: The doctor will confirm symptoms and the onset situation.
・Physical Examination: Evaluating the range of motion in the shoulder and the degree of pain.
・Imaging Tests: Using MRI or ultrasound to check the condition of the tendons and joints.

[Treatment]
・Conservative Treatment
　　　〇Rest: Temporarily stopping throwing motions and resting the shoulder is important.
　　　〇Cooling: Cooling therapy may be used to reduce swelling and inflammation.
　　　〇Physical Therapy: Rehabilitation is conducted to restore the range of motion and muscle strength in the shoulder.
　　　〇Medication: Non-steroidal anti-inflammatory drugs (NSAIDs) may be prescribed.
・Surgery: If conservative treatment is ineffective or if severe impingement is confirmed, surgical removal or repair of the compressed area may be considered.

[Prevention]
・Stretching and Strength Training: Exercise to strengthen the shoulder muscles and increase flexibility is important.
・Learning Correct Form: It is crucial to focus on the correct form during the throwing motion.

[Summary]
Thrower's Shoulder (Internal Impingement) is a condition that causes pain, especially during throwing, requiring appropriate diagnosis and treatment. Early intervention and rehabilitation are essential to restore shoulder function and aim for a return to sports.

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