What physical change is associated with heterotopic ossification?

The correct choice highlights a significant characteristic of heterotopic ossification, which refers specifically to the abnormal growth of bone in locations where bone typically does not form. This can occur in soft tissues around joints and muscles, leading to a range of complications, including limited mobility and pain. Understanding this condition is crucial for occupational therapy assistants as it informs the treatment approaches and considerations for patients who may experience this issue after trauma, surgery, or neurological conditions.

The other options, while relevant to different medical concepts, do not accurately define heterotopic ossification. Loss of muscle mass is related to disuse or atrophy rather than abnormal bone growth. Calcification of soft tissues typically pertains to conditions like calcific tendinitis, not the abnormal formation of bone. Development of arthritis involves inflammation of the joints rather than the formation of bone in atypical locations. Understanding these distinctions is important for effective patient care and management in occupational therapy practice.