How long does it take for callus formation to fully develop during bone healing?

It usually takes about four months for callus formation to progress from the growth phase to complete healing, but this is not definitive and depends on individual circumstances. The specific analysis is as follows:

Callus formation is a gradual process, typically slow because in the early stages it consists of fibrous callus, which later transforms into bony callus and eventually undergoes callus remodeling. Callus formation itself requires at least 3–4 weeks, while full remodeling into a mature callus that matches the body's anatomical structure and shape generally takes around four months. Therefore, from the initial growth phase to complete healing, callus development usually takes approximately four months. However, if the patient has diabetes or suffers from a severe injury, the local callus formation time may be prolonged.

During the callus recovery period, appropriate exercise and supplementation with vitamins can significantly benefit the healing process.