Hart 2006

Methods	RCT Exp: Trapeziectomy with LRTI (FCR) C: Arthrodesis
Participants	Age (mean): 59 (49 to 75) Gender (female/male): 24/13 Stage of OA: stage IV Number of subjects Exp/C: 20/20
Interventions	Surgery Exp/C: Exp: Trapeziectomy with LRTI (FCR) C: Arthrodesis using 2 crossed Kirschner wires. All patients were immobilised in thumb spica cast for 6 weeks.
Outcomes	Outcomes were measured using the Buck‐Gramcko score which included palmar and radial abduction, pain, strength, daily function, dexterity, cosmetic appearance, willingness to undergo the surgery again and overall satisfaction. Mean scores were provided but individual results for outcomes were not.
Notes	Average follow‐up of 6.8 years (2 to 10 years) We tried to correspond with the contact author. No further information was provided.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "patients were selected at random into two groups as they came into the authors' institution". However method of randomisation sequence generation was not stated.
Allocation concealment (selection bias)	Unclear risk	—
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Comment: Unclear if participants or assessors were informed of surgery performed prior to final review.
Blinding of outcome assessment (detection bias) Subjective outcomes (patient reported)	Unclear risk	Comment: Unclear if participants were informed of surgery performed prior to final review.
Blinding of outcome assessment (detection bias) Objective outcomes	Unclear risk	Comment: Reviewer was not was involved in the surgery but unclear if he was blinded to surgery performed.
Incomplete outcome data (attrition bias) All outcomes	Low risk	Quote: "All patients were available for review at a mean of 6.8 years (2 to 10 years)".
Selective reporting (reporting bias)	Unclear risk	Comment: We did not identify a protocol.