The results of ultrasonographic examinations of the patellar height in the knee joints in children was subjected to analysis. The study aimed at the specification of a norm of patellar height in the developmental age, based on the tendon-patellar coefficient (analogous to the radiologic measurement according to Insall and Salvati). The results of ultrasonographic and clinical examinations of 114 knee joints performed in 57 healthy children were used for the study. The average value of the tendon-patellar coefficient was 1.2 and was independent of age or sex. A statistically significant dependence of the coefficient on the popliteal angle was demonstrated, which indirectly proved the dependence of the coefficient on the length of the hamstrings. In our opinion, the use of ultrasonographic tendon-patellar coefficient allows the differentiation of the so-called physiologic shortening of hamstrings from its pathologic form.
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Cureus
December 2024
Department of Health Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, JPN.
Purpose The infrapatellar fat pad (IFP) has the lowest pain threshold among all knee joint components and causes anterior knee pain after knee arthroplasty. It has been reported that selective muscle atrophy of the vastus medialis (VM) and fibrosis of the IFP may develop following knee joint surgery. Ultrasound enables visualization of IFP deformation (A1) from within the joint to the proximal area in response to muscle contraction, and this may be helpful in developing preventive and therapeutic strategies for IFP fibrosis.
View Article and Find Full Text PDFJ Funct Morphol Kinesiol
December 2024
Department of Sport Science, Universität Innsbruck, 6020 Innsbruck, Austria.
: Unlike road running, mountain and trail running typically cover longer distances and include uphill and downhill segments that impose unique physiological and mechanical demands on athletes. : This study aimed to identify morphological differences in the patellar and Achilles tendons between trail and road runners. Moreover, the potential influence of weekly mileage and accumulated positive elevation gain on the morphology of both tendons was obtained.
View Article and Find Full Text PDFArch Phys Med Rehabil
December 2024
Graduate School of Health Sciences, Morinomiya University of Medical Sciences, Osaka; Department of Physiotherapy, Morinomiya University of Medical Sciences, Osaka; Inclusive Medical Sciences Research Institute, Morinomiya University of Medical Sciences, Osaka; AR-Ex Medical Research Center, Tokyo, Japan. Electronic address:
Objective(s): To investigate the relationship between impaired gliding in the anterior knee region and anterior knee pain (AKP) in patients after total knee arthroplasty (TKA).
Design: Cross-sectional study.
Setting: Orthopedic hospital.
J Clin Orthop Trauma
January 2025
St. George's University Hospitals NHS Foundation Trust, London, SW17 0QT, UK.
Introduction: medial patellofemoral ligament reconstruction (MPFLr) is a common surgical procedure for treating patellar instability. Grafts can be fixed to the femur using a bone-tunnel technique with an interference screw. However, this may lead to femoral tunnel enlargement (FTE) post-operatively.
View Article and Find Full Text PDFInt J Rehabil Res
December 2024
Department of Physiotherapy and Rehabilitation, Hacettepe University, Ankara, Turkey.
The aim of this study was to investigate the feasibility, test-retest reliability, and construct validity of the 2-min step test (2MST) in measuring aerobic exercise capacity and functional endurance in participants with anterior cruciate ligament reconstruction (ACLR). Fifty participants with quadriceps tendon autograft, bone-patellar tendon-bone graft, or hamstring autograft were included. Feasibility was assessed by the time and support required to complete the measures and the feedback from participants, including their satisfaction ratings.
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