Correction to: Journal of Orthopaedic Surgery and Research (2021) 16:696 https://doi.org/10.1186/s13018-021-02841-4

Following publication of the original article [1], an error was identified in the abstract section.

The updated abstract is given below and the changes have been highlighted in bold typeface.

"There was no significant difference between the two groups in complication rate. The operative time in the PETLIF group was significantly less than that in the MISTLIF group".