Opening wedge high tibial osteotomy using patient‐specific instruments and custom‐made plates results in accurate correction and improved clinical outcome measures at 1‐year follow‐up
Year: 2025
Type: article
Abstract: Purpose Achieving high accuracy is a primary goal in opening wedge high tibial osteotomy (HTO). However, literature on the combined use of patient‐specific instruments (PSI) and patient‐specific plates (PSP) remains limited. This study investigates the accuracy and clinical results of the combined use of a novel PSI and PSP system. Methods All medial open‐wedge HTO using the PSI and PSP system from Medacta (Medacta, Castel San Pietro, Switzerland) between November 2021 and April 2023 at our institution were included. The hip‐knee‐ankle angle (HKA) and the posterior tibial slope (PTS) were measured preoperatively, and at 4.5 months and 1 year postoperatively, to assess surgical accuracy. The knee society score (KSS) was collected preoperatively and at 1 year postoperatively. Results Fourteen knees from 14 patients (6 females, 8 males) were included. Accuracy for HKA correction at 1‐year follow‐up was 1.9 ± 1.4°, whereas accuracy for PTS correction was 1.0 ± 0.9°. KSS significantly improved for the clinical score from 57.4 ± 19.4 to 84.1 ± 16.6 ( p = 0.003) and for the function score from 80.4 ± 18.4 to 93.6 ± 11.5 ( p = 0.043). Conclusion The investigated combined PSI and PSP system shows accurate surgical accuracy for HKA and PTS correction with significant improvement of patient‐reported outcomes at 1‐year follow‐up. Level of Evidence Level III.
DOI: 10.1002/jeo2.70340
Institutions: University of Zurich, Universitätsklinik Balgrist
Language: English
Subfield: Surgery
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $1,850
OpenAlex ID: W4412069856