Abstract
This study aimed to characterize knee meniscus signal-intensity using magnetic resonance imaging. Our research included knee MR images of 138 subjects from multi-centres in Nigeria, between September 2016 and December 2017. Knee images were retrieved from patients' folder of MRI scanners and transfered to a DICOM workstation (Onis 2.6) for image analysis. Knee meniscus was characterized into 0, 1, 2 & 3 grades using Crue’s grading approach. Our research revealed 58% incidence of meniscal lesion. Study yielded a significant relationship between meniscal lesion and gender (p <.005) with a greater proportion of these lesions in women than in men. Meniscal lesions showed significant association with osteoarthritis (OA) (p < 0.05). Grade 3 lesions (actual tears) were largely of horizontal configuration.
Highlights
Injury to the meniscus is common among athletes and in the general population [1]
Meniscal lesion was more in women than in men (p
Study showed a significant association between actual meniscal tear and age groupings with the category > 40 years having a higher incidence of this lesion than the younger population
Summary
Injury to the meniscus is common among athletes and in the general population [1]. Several research evidences have identified sport injury as the leading cause of meniscal lesions, especially those with vertical configurations, while degenerative meniscal injury is fast becoming visible in the general population, and common among persons greater than 40 years [3]. Traditional clinical approaches to knee meniscal evaluation have proven to be unreliable in many cases of knee meniscal injury. Several studies have reported an improved evaluation of the meniscus following adjunctive imaging with MRI. A recent publication has recommended a preoperative MR imaging prior to any invasive knee joint procedure, and this has been endorsed by renowned orthopedic surgeons to be a viable approach when contemplating knee surgery following suspected meniscal involvement [1, 4, 5].
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