Feasibility and anteversion accuracy of a patient-specific instrument for femoral prosthesis implantation in total hip arthroplasty.

"Declarations Ethics approval and consent to participateThis study was approved by the ethics committee of the Fourth Affiliated Hospital, Nanchang University (protocol number: SFYYXLL-PJ-2021-KY012) and every patient gave written informed consent to participate. Moreover, this research was registered at China Clinical Trial Registry (number: ChiCTR2300072325) on June 9th, 2023. Consent for publicationWe have obtained consent for publication from all participants. Competing interestsAll authors declare that they do not have a competing interest. Competing interests All authors declare that they do not have a competing interest."

"Funding This research was funded by Jiangxi Postgraduate Innovation Special Fund Project (YC2022-s231), the Jiangxi Provincial Natural Science Foundation (20224BAB216111) and Jiangxi Provincial Department of Science and Technology Key R&D Projects (20181BBG70024)."

"Methods: During the period of January 1, 2021 to December 31, 2022, a randomized allocation was used for patients receiving unilateral primary THA to either the PSI or conventional operation group. The placement and size of the PSI were specifically chosen to guide femoral neck resection and prosthesis implantation. The study analyzed component positions and evaluated radiographic and clinical outcomes in 30 patients who received PSI-assisted THAs and 30 patients who received FRH THAs. This study was registered at China Clinical Trial Registry (number: ChiCTR2300072325) on June 9th, 2023. Declarations: Ethics approval and consent to participateThis study was approved by the ethics committee of the Fourth Affiliated Hospital, Nanchang University (protocol number: SFYYXLL-PJ-2021-KY012) and every patient gave written informed consent to participate. Moreover, this research was registered at China Clinical Trial Registry (number: ChiCTR2300072325) on June 9th, 2023.: Consent for publicationWe have obtained consent for publication from all participants.: Competing interestsAll authors declare that they do not have a competing interest. Ethics approval and consent to participate: This study was approved by the ethics committee of the Fourth Affiliated Hospital, Nanchang University (protocol number: SFYYXLL-PJ-2021-KY012) and every patient gave written informed consent to participate. Moreover, this research was registered at China Clinical Trial Registry (number: ChiCTR2300072325) on June 9th, 2023."