Final answer:
Elbow motion recovery after a supracondylar humerus fracture in children usually takes two to three months, but this can vary depending on treatment and other factors. Surgery and physical therapy may extend the recovery period.
Step-by-step explanation:
Recovery time for elbow motion after a supracondylar humerus fracture in children can vary based on several factors including the severity of the fracture, the child's age, and the treatment provided. Typically, the natural bone healing process following a supracondylar humerus fracture involves swelling, pain, and eventually the start of bone repair by bone cells within a few days. In general, it may take about two to three months before compact and spongy bone form at the fracture site. However, if surgery is required to align and stabilize the fracture with metal pins or other methods, recovery time may be extended, and physical therapy could be required to regain full motion in the elbow. On average, complete healing and recovery can take several weeks to several months.