ArticleBMC musculoskeletal disorders2020
Patient-reported outcome after patient-specific unicondylar knee arthroplasty for unicompartmental knee osteoarthritis.
Article in BMC musculoskeletal disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Insufficient evidence to confirm benefits of custom partial knee arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Pooled it
- Favorable midterm clinical results of medial unicompartmental knee arthroplasty guided by coronal limb alignment using an image-free navigation system.Archives of orthopaedic and trauma surgery · 2026Article
- No advantage for patient-specific UKA in comparison with standard UKA regarding clinical and functional results at short-term follow-up.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025Observational
- Patient-specific versus off-the-shelf unicompartmental knee arthroplasty during level walking.Journal of experimental orthopaedics · 2025Article
- Predicting unicompartmental arthroplasty success: a three year Indian study.International orthopaedics · 2025Article
- Article
- Trends in unicompartmental knee arthroplasty among 138 international experienced arthroplasty knee surgeons.Heliyon · 2024Article
- Survival of Patient-Specific Unicondylar Knee Replacement.Journal of personalized medicine · 2023Article
- Article
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8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundUnicondylar knee arthroplasty was introduced in the late 1960s and remains a topic of controversial discussion. Patient-specific instruments and patient-specific implants are not yet the standard of care. The question remains whether this time-consuming and costly technique can be beneficial for the patient. The aim of this study was to evaluate whether a custom-made unicondylar knee arthroplasty leads to improved patient-reported outcome.
methodsThis retrospective study evaluates the patient-reported outcome after custom-made unicondylar knee arthroplasty (CM-UKA, ConforMIS™ iUni® G2, ConforMIS Inc., Billerica, MA, USA). We evaluated 29 patients (31 knees) at an average of 2.4 years (range 1.2-3.6 years) after operation for unicondylar osteoarthritis of the knee. The target zone for the postoperative leg axis was a slight under-correction of 0-2° varus. Follow-up evaluation included the Forgotten Joint Score (FJS), the Knee Society Score (KSS), a Visual Analogue Scale (VAS) and a radiographic evaluation including a long-leg radiograph. Primary outcome measure was patient satisfaction based on the Forgotten Joint Score.
resultsWe found an excellent postoperative health-related quality of life with a mean FJS of 76.8 (SD 17.9) indicating a low level of joint awareness after CM-UKA. The mean preoperative KSS was 66.0 (SD 13.71) and 59.4 (17.9) for the KSS function score. The increase was 22.8 points for the KSS knee score (p < 0.0001) and 34.8 points for the KSS function score (p < 0.0001). The VAS for pain decreased from a mean of 5.4 (SD 1.8) to 1.1 (SD 1.2) (p < 0.0001). The malalignment rate with a postoperative deviation of more than 2° in the leg axis was 29%. There was no evidence of component loosening after a mean follow-up of 2.4 years.
conclusionsCustom-made unicondylar knee arthroplasty (CM-UKA) can provide improved clinical and functional outcomes for patients with isolated knee osteoarthritis of the medial compartment. We found excellent results regarding patient satisfaction and a low malalignment rate for CM-UKA. Further studies are needed to investigate long-term survivorship of the implant. LEVEL OF EVIDENCE: Level IV.
trial registrationTrial Registration number: Z-2014-0389-10 Regensburg Clinical Studies Center (REGCSC) 09/07/2014.
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