Heterotopic Ossification
Pronunciation: het-er-oh-TOP-ik os-if-ih-KAY-shun
Abnormal formation of bone and cartilage in soft tissues, commonly seen after traumatic brain injury or spinal cord injury.
Full Definition
Heterotopic ossification (HO) is the abnormal formation of bone and cartilage in soft tissues where bone normally does not exist, particularly around joints. This condition frequently occurs in rehabilitation patients following traumatic brain injury, spinal cord injury, burns, or prolonged immobilization. HO typically develops 1-4 months post-injury and can severely limit joint range of motion, cause pain, and interfere with functional activities. Early signs include joint swelling, warmth, and decreased range of motion. Treatment may include medications, aggressive range of motion exercises, and sometimes surgical excision.
Usage
Usage note: Often abbreviated as HO in clinical documentation. Most common around hip and elbow joints.
In Context
- "Heterotopic ossification at the right hip joint severely limited the patient's range of motion." — Medical assessment
- "Early aggressive range of motion exercises may help prevent heterotopic ossification formation." — Treatment protocol