Techniques, anaesthesia preferences, and outcomes of Achilles tenotomy during Ponseti method of idiopathic clubfoot correction: A systematic review.

BACKGROUND

Achilles tenotomy (AT) forms an important aspect of Ponseti's casting method and is performed in 80-90% of idiopathic clubfoot cases to correct residual hindfoot equinus. Different techniques are described in the literature with no clarity on which method is superior. This review aims to analyse the various techniques described, anaesthesia preferences, and outcomes of AT.

METHODS

We searched PubMed, Embase, Scopus, and Ovid MEDLINE for articles describing idiopathic clubfoot cases undergoing primary AT during Ponseti's casting method. Data were extracted from eligible studies for qualitative and quantitative synthesis. The repeat tenotomy and complication rates were taken as outcome parameters.

RESULTS

Nineteen studies were included for systematic review. A percutaneous AT using a scalpel or needle is adequate in most cases and shows promising results. The out-patient department (OPD) tenotomies under local anaesthesia (LA) and operation room (OR) tenotomies under general anaesthesia (GA) were associated with a repeat tenotomy (RT) rate of 2.5% (95%CI, 0.4-5.4%) and 0.8% (95%CI, 0-1.6%), respectively. The difference between OPD and OR groups was not statistically significant (p = 0.875). The pooled analysis shows a failure/relapse rate of 4.2% (1.9-6.4%, p < 0.001) after AT. OPD and OR tenotomies were associated with a complication rate of 1.6% (95%CI, 0.2-3.0%) and 0.5% (95%CI, 0.1-0.8%), respectively, and the difference was not statistically significant (p = 0.807). Bleeding is the most common complication and is controlled in most cases by applying local pressure.

CONCLUSION

Performing Achilles tenotomy in OPD under LA is safe and cost-effective with similar success rates to those done under GA. With the lack of many comparative and higher-level evidence studies at present, we can't conclude if one technique is better than another.