• thigh
  • All participants underwent two phases of data collection: 1) magnetic resonance imaging of the knee, patellofemoral joint, and thigh, and 2) kinematic, kinetic and EMG analysis during walking, running, stair ascent, and stair descent. (ebscohost.com)
  • radiographs
  • One possible reason for this is the fact that this secondary ridge is often purely cartilaginous ( Fig. 1.5 ) and, not always being reflected in subchondral bone, may not be apparent on tangential radiographs of the patellofemoral joint (Fig. 1.6, A and B ). There is considerable individual variation in the prominence of the secondary ridge. (patellofemoral.org)
  • Forces
  • The purpose of this study was to describe an imaging based, subject specific model that was developed to quantify patellofemoral joint reaction forces (PFJRF's). (ebscohost.com)
  • Normalization of Ground Reaction Forces, Joint Moments, and Free Moments in Human Locomotion. (ebscohost.com)
  • When using joint models to estimate tissue specific stresses, the decision of which technique is used to estimate muscle forces plays a significant role in determining the magnitude of estimated stresses in patellofemoral joint models. (physiospot.com)
  • symptoms
  • Strategies that address the modifiable factors for risk of PFJ OA may aid in alleviating joint loads and symptoms for people after ACLR. (bmj.com)
  • femur
  • The PCL is located within the knee joint where it stabilizes the articulating bones, particularly the femur and the tibia, during movement. (wikipedia.org)
  • Anteriorly, the synovial membrane is attached on the margin of the cartilage both on the femur and the tibia, but on the femur, the suprapatellar bursa or recess extends the joint space proximally. (wikipedia.org)
  • bone
  • Frequently such individuals have severe disability in their 50s and can be helped by patellofemoral replacement which removes very little bone and is therefore much preferred to a total knee replacement. (allevyngentle.com)
  • J Bone Joint Surg Am. 90: 2751-62. (wikipedia.org)
  • Cartilage is a thin, elastic tissue that protects the bone and makes certain that the joint surfaces can slide easily over each other. (wikipedia.org)
  • meniscus
  • There are two types of joint cartilage in the knees: fibrous cartilage (the meniscus) and hyaline cartilage. (wikipedia.org)
  • cartilage
  • Hyaline cartilage covers the surface along which the joints move. (wikipedia.org)
  • Cartilage is a resilient and smooth elastic tissue, rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components. (wikipedia.org)
  • Over the last years, surgeons and scientists have elaborated a series of cartilage repair procedures that help to postpone the need for joint replacement. (wikipedia.org)
  • patients
  • Such reports raise the possibility that aggressive early treatment of certain patients (those with more severe malalignment and joint damage) may improve long‑term results. (patellofemoral.org)
  • exercises
  • Changes in activity patterns such as excessive increases in running mileage, repetitions such as running up steps and the addition of strength exercises that affect the patellofemoral joint are commonly associated with symptom onset. (wikipedia.org)
  • model
  • Motion capture and force platform data were processed using both solely inverse dynamics and inverse dynamics with static optimization to estimate the quadriceps force in a patellofemoral joint model. (physiospot.com)
  • presence
  • also termed crepitation) is a medical term to describe the grating, crackling or popping sounds and sensations experienced under the skin and joints or a crackling sensation due to the presence of air in the subcutaneous tissue. (wikipedia.org)
  • usually
  • Authors who report ground reaction force (GRF), free moment (FM), and resultant joint moments usually normalize these variables by division normalization. (ebscohost.com)