Which factor is essential for promoting healing in femoral neck fractures?

Promoting healing in femoral neck fractures heavily relies on an increased blood supply. The femoral neck is particularly susceptible to avascular necrosis due to its blood supply being precarious. Adequate vascularization is vital for delivering essential nutrients and oxygen to the fracture site, facilitating the natural healing process and improving the chances of bone union. A robust blood supply also helps in the removal of waste products from the fracture area, contributing further to recovery.

While proper immobilization can support the healing process by keeping the bones in alignment, it does not directly enhance the biological mechanisms needed for healing in the way that improved blood flow does. Immediate physical therapy is important for restoring function and preventing complications like stiffness, but commencing therapy too soon after injury without adequate blood supply can be detrimental. Weight bearing from the onset can also be harmful, as it places stress on the fracture before it has had a chance to heal adequately, potentially compromising the alignment and stability of the fracture.