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Osgood–Schlatter disease resolves or becomes asymptomatic in the majority of cases. One study showed that 90% of reported patients had symptom resolution in 12–24 months. Because of this short symptomatic period with most patients, the number of people who become diagnosed is a fraction of the true number.
The diagnosis of patellofemoral pain syndrome is made by ruling out patellar tendinitis, prepatellar bursitis, plica syndrome, Sinding-Larsen and Johansson syndrome, and Osgood–Schlatter disease. [23] Currently, there is not a gold standard assessment to diagnose PFPS. [20]
Non-articular: This group includes Sever's disease (of the calcaneus, or heel), and other conditions not completely characteristic of the osteochondroses, such as Osgood-Schlatter's disease (of the tibial tubercle) [10] and Sinding-Larsen-Johansson syndrome (proximal patellar tendon).
The Ramberg–Osgood equation relates Young's modulus to the tangent modulus and is another method for obtaining the tangent modulus. The tangent modulus is useful in describing the behavior of materials that have been stressed beyond the elastic region.
A curve in the Euclidean plane is defined to be an Osgood curve when it is non-self-intersecting (that is, it is either a Jordan curve or a Jordan arc) and it has positive area. [1] More formally, it must have positive two-dimensional Lebesgue measure. Osgood curves have Hausdorff dimension two, like space-filling curves.
The condition is most commonly found in children between the ages of 4 and 10. Common symptoms include pain in the hip, knee, or ankle (since hip pathology can cause pain to be felt in a normal knee or ankle), or in the groin; this pain is exacerbated by hip or leg movement, especially internal hip rotation (with the knee flexed 90°, twisting the lower leg away from the center of the body).
An exostosis, also known as a bone spur, is the formation of new bone on the surface of a bone. [1] Exostoses can cause chronic pain ranging from mild to debilitatingly severe, depending on the shape, size, and location of the lesion.
The Ramberg–Osgood equation was created to describe the nonlinear relationship between stress and strain—that is, the stress–strain curve—in materials near their yield points. It is especially applicable to metals that harden with plastic deformation (see work hardening ), showing a smooth elastic-plastic transition.