Abscess/diagnostic imaging; Community-Acquired Infections/diagnostic imaging; Methicillin-Resistant Staphylococcus aureus/isolation & purification; Myositis/diagnostic imaging; Staphylococcal Infections/diagnostic imaging; Tomography, X-Ray Computed; Abscess/drug therapy; Abscess/microbiology; Abscess/surgery; Anti-Bacterial Agents/therapeutic use; Combined Modality Therapy; Community-Acquired Infections/drug therapy; Community-Acquired Infections/microbiology; Community-Acquired Infections/surgery; Debridement; Drainage; Drug Therapy, Combination; Female; Humans; Immunocompetence; Middle Aged; Myositis/drug therapy; Myositis/microbiology; Myositis/surgery; Osteomyelitis/drug therapy; Osteomyelitis/microbiology; Osteomyelitis/surgery; Periosteum/microbiology; Periosteum/surgery; Psoas Abscess/diagnostic imaging; Psoas Abscess/drug therapy; Psoas Abscess/microbiology; Psoas Abscess/surgery; Recurrence; Sacroiliitis/drug therapy; Sacroiliitis/microbiology; Sacroiliitis/surgery; Staphylococcal Infections/drug therapy; Staphylococcal Infections/microbiology; Staphylococcal Infections/surgery; Thigh