Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Functional assessment
RCT 3-armed trial	209 people In review	Mean functional status (assessed using American Orthopaedic Foot and Ankle Scale [AOFAS]) at 1 year 75 with distal chevron osteotomy 66 with no treatment	Difference adjusted for baseline characteristics: 11 for distal chevron osteotomy v no treatment 95% CI 7 to 16	Effect size not calculated	distal chevron osteotomy