Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Improvement in joint angle
RCT	33 people In review	Intermetatarsal angle at 3 years 12.0° with Keller's arthroplasty 7.0° with distal metatarsal osteotomy	Difference: –5.0° 95% CI –8.9° to –1.1° RCT had weak methods; see further information on studies for full details	Effect size not calculated	distal metatarsal osteotomy