Question: What causes Freiberg's disease ?
Answer: What causes Freiberg's disease? The exact cause of Freiberg's disease is poorly understood. Some scientists believe that it is a multifactorial condition which is likely associated with the effects of multiple genes in combination with lifestyle and environmental factors. However, most current theories are centered on whether the triggering event is predominantly traumatic (injury-related) or vascular (consistent with avascular necrosis - an injury to the blood supply of the affected part of the foot).
Source: GARD

Question: What are the treatments for Freiberg's disease ?
Answer: How might Freiberg's disease be treated? The treatment of Freiberg's disease depends on many factors, including the severity of condition; the signs and symptoms present; and the age of the patient. The primary goal of therapy is to rest the joint and reduce pain and swelling. A more conservative treatment approach is typically attempted initially which may include modification of activities with different types of casts, crutches and/or shoe inserts, as needed. Medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) may be recommended to manage pain. If other treatments are not effective, surgery may be necessary. Medscape Reference's Web site offers more specific information regarding the different surgical procedures used to treat Freiberg's disease. Please click on the link to access the resource.
Source: GARD