2023 ISAKOS Biennial Congress ePoster
Osteotomies Around Knee with PSI Precision Assessment in Own Material
Andrzej Mioduszewski, MD, PhD, Warsaw POLAND
Mikolaj Wrobel, MD, Warsaw POLAND
Wojciech Ananicz, MD POLAND
Juliusz Sroczynski, MD, Warszawa, mazowieckie POLAND
Grzegorz Klos, MD, Warszawa POLAND
ORTOPEDIKA- Center for Specialised Surgery, Warsaw, POLAND
FDA Status Not Applicable
Summary
Around-the-knee osteotomies using Patient Specific Instrument enables accurate operation planning and precise angle correction
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Abstract
Introduction
High tibial osteotomy is a well-known and widely used procedure with a proven efficiency in treatment and prevention of knee arthritis. For a few years this procedure has been performed using a Patient Specific Instrument (PSI), designed pre-operatively for a specific patient. The aim of this paper is to analyze outcomes of high tibial osteotomies using PSI, regarding accuracy in axis correction.
Material And Method
In years 2018- 2022, 37 lower limb corrections by around- the knee osteotomy were performed. Mean age in analyzed group was 51,1 years (22-72). Right side: 17, left side: 20. Group consisted of 24 men and 13 women.
In preoperational planning all patients underwent diagnostics concerning full- length weight bearing conventional radiography and a CT scan. Based on the data, in cooperation with biomedical engineer, a mathematical model of the bone was created. An individual patient specific instrument was designed and printed in 3D technology, accurately pointing place and angle of the osteotomy. In the analysis planned and actual correction angles were compared, based on postoperative radiograms. Radiograms were analyzed using Horos software.
Results
Mean correction angle was 6,46 degrees (3-11). The mean difference between actual and planned correction angle was 0,61 degrees (0-2). In one case we noted a complication, where gauge was printed for the other side of the body. In this case we performed the surgery using traditional approach.
Summary
Hight tibial osteotomy using Patient Specific Instrument enables accurate operation planning and precise angle correction. Additional benefit of PSI- assisted osteotomies is shorter time of the procedure, comparing to a traditional approach.