No abstract

Although non-obese patients obtained better functional and reported quality of life scores than obese patients, there were no differences in the gain of quality of life and knee functionality between both groups at 5-years of follow-up. This is one of the largest series in a single centre published in literature and confirms the results obtained by other authors. Taking into account the different outcomes obtained, surgery should not be denied to patients that are obese, given that they obtained similar benefit than non-obese patients.

Objectives:To evaluate the influence of chondral lesions of the knee in function and appearance on magnetic resonance imaging (MRI) of the meniscal implant Polyurethane (Actifit®).Material and Methods:48 patients were implanted with Actifit® by postmeniscectomía syndrome. The chondral status of their respective compartment was graded at arthroscopy with ICRS scale. Were evaluated functionally Womet, IKDC, Kujala, EVA and satisfaction (0-4). The implant characteristics were evaluated with MRI scale Genovese, assessing its correlation with the degree of chondral damage and functional outcomeResults:Mean follow-up of 38 months (25-75). 16 patients had no chondral lesion, 14 had lesion grade II, 10 grade III and IV grade 9. Womet, Kujala improved IKDC and 36.2 ± 7.6, 32.3 ± 13.5 and 39.2 ± 8.1 to 75.8 ± 12.9 (p = 0.02), 75.5 ± 15.4 (p = 0.03) and 85.6 ± 13.4 (0.042), respectively. No relationship between the degree of chondral damage and functional outcome was observed. The shape and size of the implant in RM was worse with higher levels of chondral lesion (p = 0.023). A post-hoc analysis showed that this was only due to the difference between patients without chondral injury versus those with ICRS II-IV. The satisfaction was 3.6 ± 0.8 points.Conclusion:Implementing a Actifit® led to significant pain and functional improvement after a minimum follow-up of 2 years. The size and morphological MRI appearance of meniscal replacement polyurethane was better in patients without chondral lesions. No relationship between the degree of chondral damage and functional outcome was observed.

The authors regret that they made a mistake when writing the figure legends of Figs. 3 and 4. Both magnetic resonance images were showing the lateral instead of the medial compartment of the knee.The authors would like to apologise for any inconvenience caused.