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Complaints of locking sensation in the knee joint can be divided into true locking and pseudo locking. True locking happens when the intra-articular structure (e.g. ligaments) [1] is damaged, or a loose body is present inside the joint, or there is a meniscal tear. The knee can be unlocked by rotating the leg and full movement can be restored.
The knee loses its ability to transmit and distribute load and absorb mechanical shock. Persistent and significant swelling and stiffness in the knee. The knee may be not be fully mobile; there may be the sensation of knee locking or buckling in the knee. The full knee may be in full motion after tear of meniscus.
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 ...
The most common knee problems are: soft tissue inflammation, injury, or osteoarthritis. The mechanism of the knee injury can give a clue of the possible structures that can be injured. For example, applying valgus stress on the knee can cause medial collateral ligament rupture, meanwhile a varus force can cause lateral collateral ligament rupture
Yes you may experience locking if a piece of articular cartilage has broken off and is a loose body in the joint or you may experience catching or giving way. You are likely to have some muscle wasting and difficulty in activities such as going up and down stairs, walking or running but then people with any moderate knee injury are likely to as ...
Localised tenderness over the medial knee is the most common finding of the condition. It is usually happening on one side, without a previous history of trauma. SONK should be considered together with differential diagnosis of osteoarthritis , tear of medial meniscus , and tibial plateau fracture .
A direct contact or collision to the knee (e.g. during a football tackle or a motor vehicle collision) [1] These movements cause the tibia to shift away from the femur rapidly, placing strain on the knee joint and potentially leading to rupture of the ACL. About 80% of ACL injuries occur without direct trauma. [10]
Popliteus is often referred to as the "Key" to unlocking the knee since it begins knee flexion by laterally rotating the femur on the tibia. [6] Popliteus is also attached to the lateral meniscus in the knee and draws it posteriorly during knee flexion to prevent crushing the meniscus between the tibia and femur as the knee flexes.