Patellofemoral and tibiofemoral articular cartilage and subchondral bone health following arthroscopic partial medial meniscectomy

Abstract

Methods: For this cross-sectional study, 158 patients aged 30-55 years, without evidence of knee osteoarthritis at arthroscopic partial medial meniscectomy (APMM), and 38 controls were recruited. MRI was performed once on the operated knee for each subcohort of 3 months, 2 years, or 4 years post-surgery, and the randomly assigned knee of the controls. Cartilage volume, cartilage defects, and bone size were assessed using validated methods. Conclusions: Partial medial meniscectomy is associated with adverse effects on articular cartilage and subchondral bone, which are associated with subsequent osteoarthritis, in both tibiofemoral and patellofemoral compartments. Level of Evidence: Level III

Posteromedial Meniscal Tears May Be Missed During Anterior Cruciate Ligament Reconstruction

“…The effects of meniscal tears on knee stability and the development of osteoarthritis are now well documented, [11][12][13] as are the effects of instability on the meniscus. 7,14,15 However, the consequences of specific lesions of the meniscal roots and ligamentous attachments, and the complex relationships between instability, the meniscus, and tibial slope, are less well understood.…”

History of knee injury and MRI-assessed knee structures in middle- and older-aged adults: a cross-sectional study

“…Age may not play a crucial role in mediating this association as total tibial bone area was significantly associated with injury in both cohorts, although the effect size was consistently larger in the older cohort possibly reflecting the increased time since the injury. Several studies have examined the association between cartilage defects/loss and history of knee surgery [35]; however, there is limited data showing the same association with knee injury. Elsaid et al have shown in a rabbit injury model that knee injury can result in loss of boundary-lubricating ability of synovial fluid which can cause damage to the articular cartilage matrix [36].…”

Mechanisms underpinning the peak knee flexion moment increase over 2-years following arthroscopic partial meniscectomy

“…People following APM are at increased risk of developing knee osteoarthritis in both the tibiofemoral and patellofemoral compartments (Englund and Lohmander, 2005;Wang et al, 2012). Although knee osteoarthritis is considered in part a mechanical disease (Felson, 2013), the pathogenesis of this debilitating condition is not well understood in patients following APM.…”