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Bilateral valgus stress AP images can show a difference in medial joint space gapping. It has been reported that an isolated grade III sMCL tear will show an increase in medial compartment gapping of 1.7 mm at 0° of knee flexion and 3.2 mm at 20° of knee flexion, compared to the contralateral knee.
The knee joint contains two crescent-shaped fibrocartilaginous structures, the menisci (medial and lateral), which serve as shock absorbers and stabilize the joint during movement. Each meniscus has an outer vascular zone (red-red zone), which has a good blood supply and healing potential as well as a central avascular zone (white-white zone ...
[7] [unreliable source?] More chronic injury occurs with osteoarthritis, made worse by obesity and high-impact activity. The medial meniscus and the medial compartment are more commonly affected than the lateral compartment. Often, moderate to severe injury or injury past early middle age to the meniscus will indicate a total knee replacement.
The components of each of these compartments can experience repetitive strain, injury or disease. [1] Running long distance can cause pain to the knee joint, as it is a high-impact exercise. [2] The location and severity of knee pain may vary, depending on the cause of the problem. Signs and symptoms that sometimes accompany knee pain include: [1]
Cerebral contusion – bruising of brain tissue; Kissing contusion – contusions of both surfaces of the knee joint; Love-bite – bruising created by excessive suction of a particular area of skin, associated with an individual kissing or sucking the affected area beforehand; Myocardial contusion – bruising of the heart muscle
This is a medial tibial plateau fracture with a split or depressed component. It is usually the result of a high energy injury and involves a varus force with axial loading at the knee. Represent 10% of all tibial plateau fractures. There is high risk of damage to the popliteal artery and peroneal nerve and therefore carry a worse prognosis.
A tear of a meniscus is a rupturing of one or more of the fibrocartilage strips in the knee called menisci. When doctors and patients refer to "torn cartilage" in the knee, they actually may be referring to an injury to a meniscus at the top of one of the tibiae. Menisci can be torn during innocuous activities such as walking or squatting.
Contusions of both surfaces of the knee joint are known as kissing contusions. These contusions are generally found by magnetic resonance imaging and most cases are associated with ligamentous or meniscal injuries. [1]