Osteogenesis Imperfecta (OI) is a genetic disorder which causes bones to be fragile and easily breakable. It is also referred to as “brittle bone disease.” OI affects around 20,000 to 50,000 people in the United States and is caused by a defect in the gene that is responsible for the production of collagen, the protein that gives bones strength and flexibility. People with OI may have a wide range of symptoms, from mild to severe.
Symptoms of Osteogenesis Imperfecta
The most common symptom of OI is extremely fragile bones that break easily, sometimes with very little force or even without any force at all. Other symptoms of OI may include:
• Delayed motor development
• Short stature
• Blue sclera (whiteness of the eyes)
• Hearing loss
• Scoliosis (curvature of the spine)
• Joint laxity (loose joints)
• Muscle weakness
• Chronic pain
• Dental problems
• Respiratory problems
• Bone deformities
• Difficulty walking
• Respiratory infections
• Fatigue
• Reduced lung function
Causes of Osteogenesis Imperfecta
OI is caused by a defect in the gene that is responsible for producing collagen. This defect can be inherited from one or both parents, or it can be acquired during pregnancy. In some cases, the cause is unknown.
Diagnosis of Osteogenesis Imperfecta
OI is typically diagnosed based on a person’s medical history, physical examination, and imaging tests. Genetic testing may also be used to confirm the diagnosis.
Treatment of Osteogenesis Imperfecta
There is no cure for OI, but there are treatments that can help manage the symptoms. These treatments may include medications to reduce pain, physical therapy to improve mobility and strengthen muscles, occupational therapy to help with activities of daily living, and orthopedic braces and supports to help protect the bones. In some cases, surgery may be recommended to correct bone deformities and improve mobility.