M00.212

Clinical Causes: Bacterial infection: The most common cause is the invasion of *Streptococcus* bacteria into the joint, often following an infection elsewhere in the body. Bloodstream spread: Bacteria can spread through the bloodstream (bacteremia) and settle in the shoulder joint. Local trauma or injury: An injury to the shoulder can increase susceptibility to bacterial invasion. Weakened immune system: Conditions like diabetes, immunosuppressive therapy, or chronic illnesses can predispose individuals to bacterial joint infections. Spread from nearby infections: Infections near the shoulder, such as skin or soft tissue infections, may extend into the joint.

Key Symptoms: Severe shoulder pain, often worsening with movement Swelling and warmth around the joint Restricted range of motion in the left shoulder Redness and tenderness over the shoulder area Fever and chills indicating systemic infection General malaise or feeling unwell

Diagnosis Path: Physical examination focusing on swelling, tenderness, and range of motion Blood tests to detect signs of infection, such as elevated white blood cell count and inflammatory markers (e.g., ESR, CRP) Joint aspiration: extracting synovial fluid from the shoulder joint for analysis to identify bacteria Imaging studies like X-rays, MRI, or ultrasound to assess joint damage and rule out other causes

Treatment Protocols: Antibiotic therapy: Intravenous or oral antibiotics targeted against *Streptococcus* bacteria, guided by culture results Drainage of the infected joint: Surgical or needle aspiration procedures to remove pus and reduce pressure Rest and immobilization: Limiting movement to decrease pain and prevent further injury Pain management: Use of analgesics to ease discomfort Rehabilitation exercises: Gradually restoring movement and strength after infection control Monitoring for complications: Regular follow-up to ensure infection clearance and prevent joint damage