There are many classification systems for<unk> . In general, there are three major classification systems which include; classification according to the symptom chronology, Lew and Waldvogel classification, and Cierny and Mader classification.<unk>  may be classified according to the symptom chronology into acute, sub-acute (further subdivided into the Glendhill and Robert et al. systems), and chronic. Chronic<unk>  may be subdivided into Lew and Waldvogel's classification system and Cierny and Mader's classification system.<unk>  may be classified according to Lew and Waldvogel's system based on the duration and mechanism of infection into 3 subtypes which are; hematogenouos<unk> , contiguous-focus<unk> , and<unk>  secondary to vascular insufficiency.<unk>  may be classified according to Cierny and Mader's classification system based on the anatomy of bone infection (4 stages) and host physiology (3 levels of compromise).
Osteomyelitis classification
Vertebral osteomyelitis classification
Septic arthritis classification
Bursitis classification
Osteoma classification
Osteochondroma classification
Osteoarthritis classification
Biopsy principles in orthopedics