Siddiqui 2007.

Methods	RCT. Two‐arm parallel‐group design
Participants	60 patients who presented to a single centre (number of CTEV feet unknown) Inclusion criteria: CTEV with Dimeglio grade I and II undergoing surgical correction Exclusion criteria: CTEV with Dimeglio grade III and IV PARTICIPANT CHARACTERISTICS Age range in months: 6 to 18 Sex male (%): 61.7% Basline severity: Dimeglio grade I, 20 participants; Dimeglio grade II, 40 participants Window procedure Age mean: 9.5 months Characteristics of feet: 30 participants (bilateral and unilateral numbers not reported) Baseline severity: not stated Turco procedure Age mean: 9.6 months Characteristics of feet: 30 participants (bilateral and unilateral numbers not reported) Baseline severity: not stated
Interventions	Window procedure versus Turco procedure for treatment of CTEV Participants were randomised equally into both groups The Window procedure was not described in detail in the article. It utilises five or six small incisions rather than a long posteromedial incision. Postoperatively the foot is placed in a plaster in the corrected position. Details of the plaster were not provided In the Turco group, postoperatively a cast was not applied for 15 days because of oedema Follow‐up: not stated
Outcomes	Dimeglio scale Postoperative assessment criteria according to Beatson 6 months after surgery Time in theatre Adverse events
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Insufficient information
Allocation concealment (selection bias)	Unclear risk	Insufficient information
Blinding (performance bias and detection bias) All outcomes	High risk	Unable to blind intervention provider. Assessor blinding not reported. Participant blinding unlikely to affect outcome
Incomplete outcome data (attrition bias) All outcomes	Low risk	No missing data
Selective reporting (reporting bias)	Unclear risk	Follow‐up time not reported
Other bias	High risk	Procedure was developed, used and assessed by the same team within the same population. Bilateral and unilateral numbers not reported. Follow‐up times not reported