I recommend all runners returning from a difficult injury utilize the run/walk method. If you were laid up for more than a couple of weeks or if the injury is particularly troublesome, the run/walk method can prevent re-injury and help you transition back to normal training faster.
When returning from a difficult or persistent injury, the injured area is likely to be sensitive and prone to re-injury. Moreover, you’ll likely compensate for weaknesses or pain by limping or firing other muscle groups to take pressure off the injured area — often without realizing it. You could potentially be stressing other areas of your body to compensate and set of a chain of injuries.
Implementing a run/walk will help take pressure off your structural system while enabling you to get out and run for a greater total time while transitioning back to normal training.