What is the average healing time for a scaphoid fracture in the wrist?

Variable. 1/2 of fractures of the proximal pole are healed by 5 mo, middle fractures by 12 weeks and distal (end) by 6 wks. Failure to heal relates to instability of the fracture and whether or not the blood supply has been cut off. X-rays often do not show well the exact pattern nor stability. Ct scans are helpful in evaluating for plan of treatment.
6-10 weeks. Scaphoid fractures take a very long time to heal due to its poor blood supply. Cast or splint immobilization is often needed for a prolonged period if these injuries are treated non-operatively.