Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Improvement in joint angle
RCT	66 people In review	Hallux abductus angle at 22 months 12.6° with proximal chevron osteotomy 10.1° with proximal crescentic osteotomy	Mean difference: –2.5° 95% CI –8.53° to +3.53° The RCT did not include longer-term follow-up		Not significant
RCT	66 people In review	Intermetatarsal angle at 22 months 6.6° with proximal chevron osteotomy 6.6° with proximal crescentic osteotomy	Mean difference: 0° 95% CI –2.62° to +2.62° The RCT did not include longer-term follow-up		Not significant