M00.21

Clinical Causes: Infection by Streptococcus bacteria, typically following an infection elsewhere in the body, such as the throat or skin. Spread of bacteria through the bloodstream to the shoulder joint. Injury or trauma that breaches the skin and introduces bacteria. Weak immune system, which can make the body less capable of fighting off infections. Pre-existing joint conditions that may increase susceptibility.

Key Symptoms: Severe pain in the shoulder, especially with movement. Swelling and warmth around the affected joint. Redness over the shoulder area. Limited range of motion due to pain and swelling. Fever and chills, indicating a systemic infection. General malaise and fatigue.

Diagnosis Path: Diagnosis involves a combination of clinical evaluation and laboratory tests. Physicians typically perform a physical examination to assess joint swelling and tenderness. Blood tests may reveal elevated white blood cell counts and markers of inflammation like ESR and CRP. Imaging studies such as X-rays can help rule out other conditions but may not show early infection. Aspiration of joint fluid, followed by laboratory analysis, is crucial for identifying Streptococcus bacteria, confirming the diagnosis of streptococcal arthritis.

Treatment Protocols: Managing streptococcal arthritis of the shoulder usually requires a combination of antibiotics and supportive care. Antibiotics are essential to eliminate the bacterial infection and are often administered intravenously initially, followed by oral therapy. In some cases, surgical intervention such as joint drainage or debridement may be necessary to remove infected tissue and reduce joint damage. Resting the shoulder and applying ice can help reduce inflammation and pain. Physical therapy might be recommended after initial treatment to restore mobility and strength. Early and effective treatment is vital to prevent joint damage and systemic spread of the infection.