PURPOSE: To examine movement and morphologic alteration in the menisci during knee flexion. MATERIAL AND METHODS: Twenty healthy knees were imaged at 0 degrees, 45 degrees, and 90 degrees of passive non-weight-bearing flexion in the sagittal plane with MR. In each meniscus, posterior movement distance during knee flexion and the ratio of anteroposterior (a.p.) diameter at flexion to that at extension were calculated. RESULTS: Each meniscus moved posteriorly during knee flexion. Movement was greater in the anterior horn than in the posterior horn, and greater in the medial meniscus than in the lateral meniscus (p<0.05). The a.p. diameter of each meniscus was reduced at flexion (p<0.05). CONCLUSION: Knee flexion normally leads to posterior movement and shortening of the a.p. diameter of the menisci, which may be related to the positioning and curvature of femoral condyles at the femorotibial contact point at knee flexion.
PURPOSE: To examine movement and morphologic alteration in the menisci during knee flexion. MATERIAL AND METHODS: Twenty healthy knees were imaged at 0 degrees, 45 degrees, and 90 degrees of passive non-weight-bearing flexion in the sagittal plane with MR. In each meniscus, posterior movement distance during knee flexion and the ratio of anteroposterior (a.p.) diameter at flexion to that at extension were calculated. RESULTS: Each meniscus moved posteriorly during knee flexion. Movement was greater in the anterior horn than in the posterior horn, and greater in the medial meniscus than in the lateral meniscus (p<0.05). The a.p. diameter of each meniscus was reduced at flexion (p<0.05). CONCLUSION: Knee flexion normally leads to posterior movement and shortening of the a.p. diameter of the menisci, which may be related to the positioning and curvature of femoral condyles at the femorotibial contact point at knee flexion.
Authors: Andreas Fuchs; Joachim Georgii; Elham Taghizadeh; Stefan Heldmann; Thomas Lange; Sebastian F Bendak; Markus Siegel; Tayfun Yilmaz; Hagen Schmal; Kaywan Izadpanah Journal: J Exp Orthop Date: 2022-10-04
Authors: J T Bingham; R Papannagari; S K Van de Velde; C Gross; T J Gill; D T Felson; H E Rubash; G Li Journal: Rheumatology (Oxford) Date: 2008-09-05 Impact factor: 7.580
Authors: Susan Lilly; Gesine H Seeber; Michael P Smith; Janna M McGaugh; C Roger James; Jean-Michel Brismxsée; Phillip S Sizer Journal: Int J Sports Phys Ther Date: 2019-02