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Osteonecrosis of the Jaw Microchapters |
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Differentiating Osteonecrosis of the jaw from other Diseases |
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Diagnosis |
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Treatment |
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Osteonecrosis of the jaw differential diagnosis On the Web |
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Risk calculators and risk factors for Osteonecrosis of the jaw differential diagnosis |
Osteonecrosis of the jaw must be differentiated from other diseases that cause bone pain, edema, and erythema.
| Disease | Findings |
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| Soft tissue infection (Commonly cellulitis) |
History of skin warmness, swelling and erythema. Bone probing is the definite way to differentiate them.[1][2] |
| Osteonecrosis (Avascular necrosis of bone) |
Previous history of trauma, radiation, use of steroids or biphosphonates are suggestive to differentiate osteonecrosis from ostemyelitis.[3][4] MRI is diagnostic.[5][6] |
| Charcot joint | Patients with Charcot joint commonly develop skin ulcerations that can in turn lead to secondary osteomyelitis. Contrast-enhanced MRI may be diagnostically useful if it shows a sinus tract, replacement of soft tissue fat, a fluid collection, or extensive marrow abnormalities. Bone biopsy is the definitive diagnostic modality.[7] |
| Bone tumors | May present with local pain and radiographic changes consistent with osteomyelitis. Tumors most likely to mimic osteomyelitis are osteoid osteomas and chondroblastomas that produce small, round, radiolucent lesions on radiographs.[8] |
| Gout | Gout presents with joint pain and swelling. Joint aspiration and crystals in synovial fluid is diagnostic for gout.[9] |
| SAPHO syndrome (Synovitis, acne, pustulosis, hyperostosis, and osteitis) |
SAPHO syndrome consists of a wide spectrum of neutrophilic dermatosis associated with aseptic osteoarticular lesions. It can mimic osteomyelitis in patients who lack the characteristic findings of pustulosis and synovitis. The diagnosis is established via clinical manifestations; bone culture is sterile in the setting of osteitis. |
| Sarcoidosis | It involves most frequently the pulmonary parenchyma and mediastinal lymph nodes, but any organ system can be affected. Bone involvement is often bilateral and bones commonly affected include the middle and distal phalanges (producing “sausage finger”), wrist, skull, vertebral column, and long bones. |
| Langerhans' cell histiocytosis | The disease usually manifests in the skeleton and solitary bone lesions are encountered twice as often as multiple bone lesions. The tumours can develop in any bone, but most commonly originate in the skull and jaw, followed by vertebral bodies, ribs, pelvis, and long bones.[10] |