What should you know about cuboid stress fracture?

The cuboid sits on the outer side of the midfoot and helps transfer force during walking. Repeated running, jumping, a sudden increase in training, altered foot mechanics, or reduced bone strength can overload it. Pain often builds with activity and may become more focused over the outer foot; swelling or limping can follow. The symptom pattern is not enough to confirm the injury. A clinician may use an examination and imaging, and early images can sometimes be less revealing than later or more detailed studies.

Stop the activity that provokes pain and arrange an assessment. Use a stiff-soled shoe, boot, or crutches only as advised, and avoid running or jumping until healing has been confirmed. Gradual return should begin with comfortable daily walking, followed by low-impact exercise and then sport-specific loading. Nutrition, sleep, and treatment of an identified [Vitamin D Deficiency](/conditions/vitamin-d-deficiency/) may support bone health; [Vitamin D Supplementation](/treatments/medical-management/vitamin-d-supplementation/) should be guided by a clinician.

Get urgent help after a new injury if the foot is visibly deformed, severely swollen, cold, numb, or discoloured, or if you cannot take a few steps. Seek review sooner when pain is worsening at rest, swelling is increasing, or your [Foot Pain](/symptoms/foot-pain/) is causing a marked [Limping](/symptoms/limping/).

Ask whether the cuboid is the likely pain source, what imaging is appropriate, how much weight you may bear, what activity can replace training, and what milestones should guide return to sport.