Primary bone marrow oedema syndromes

Area of Science:

• Rheumatology
• Radiology
• Orthopedics

Background:

• Bone marrow edema on MRI is common in rheumatological conditions.
• It can be secondary to various causes or primary, with uncertain etiology.
• Primary bone marrow edema often affects the lower limbs, causing pain.

Purpose of the Study:

• To describe the characteristics, diagnosis, and management of primary bone marrow edema.
• To explore its relationship with osteonecrosis.
• To review current treatment options and natural history.

Main Methods:

• Diagnosis by exclusion based on MRI findings.
• Clinical assessment of patients with lower limb pain.
• Review of existing literature on primary bone marrow edema.

Main Results:

• Primary bone marrow edema typically presents with lower limb pain (hip, knee, ankle, feet).
• Diagnosis relies on characteristic MRI findings and exclusion of other causes.
• Symptoms usually resolve gradually over months with conservative management.

Conclusions:

• Primary bone marrow edema is a diagnosis of exclusion in rheumatological patients.
• Conservative treatment and symptom management are standard.
• Bisphosphonates show potential in improving pain and radiological findings, while surgery is a last resort.