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.
case_series · Level IV
Where this comes from
- Record sourced from PubMed, PMID 40626186.
- Also identified by DOI 10.1002/jeo2.70340 and PMC identifier 12231063.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
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. 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. 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 (<i>p</i> = 0.003) and for the function score from 80.4 ± 18.4 to 93.6 ± 11.5 (<i>p</i> = 0.043). 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 III.