The fifth metatarsal is one of the bones where stress fractures can occur. Current literature provides support for both operative and non-operative treatment, but is mostly based on retrospective studies. One small randomized controlled trial reported faster recovery in the surgery group, but this study is probably subject to selection bias as well as underpowered design. There is a need to strengthen the knowledge base regarding treatment of stress fractures in the fifth metatarsal. This study seeks to answer whether osteosynthesis with an intramedullar screw fixation gives faster painfree weight bearing compared to non-operative treatment with a walking boot.

Inclusion Criteria:

• Zone 3 fracture

Exclusion Criteria:

• Neuropathy
• Open fractures
• High energy injuries
• Associated injury in the same or opposite extremity that may affect treatment or rehabilitation
• Pressure ulcer(s)
• Lack of consent competence
• Fracture radiologically confirmed more than six months ago
• No possibility of follow-up at one of the study centers
• Established pseudarthrosis
• Medical condition that contraindicates surgery
• Non-compliance