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In this position, the PCL functions to prevent movement of the tibia in the posterior direction [7] [13] and to prevent the tilting or shifting of the patella. [14] However, the respective laxity of the two sections makes the PCL susceptible to injury during hyperflexion, hyperextension, [15] and in a mechanism known as a dashboard injury. [9]
The PCL is located within the knee joint where it stabilizes the articulating bones, particularly the femur and the tibia, during movement.It originates from the lateral edge of the medial femoral condyle and the roof of the intercondyle notch [2] then stretches, at a posterior and lateral angle, toward the posterior of the tibia just below its articular surface.
Most PLC injuries accompany an ACL or PCL tear, and can contribute to ACL or PCL reconstruction graft failure if not recognized and treated. [ 47 ] [ 48 ] A study by LaPrade et al. in 2007 showed the incidence of posterolateral knee injuries in patients presenting with acute knee injuries and hemarthrosis (blood in the knee joint) was 9.1%.
Articular cartilage does not usually regenerate (the process of repair by formation of the same type of tissue) after injury or disease leading to loss of tissue and formation of a defect. This fact was first described by William Hunter in 1743. [1] Several surgical techniques have been developed in the effort to repair articular cartilage defects.
ACL injury used to be a career-ending injury for competitive athletes; however, in recent years ACL reconstruction surgery followed by physical therapy has allowed many athletes to return to their pre-injury level of performance. [62] Long term complications of ACL injury include early onset arthritis of the knee and/or re-tearing the ligament.
MRI of normal shoulder intratendinous signal MRI of rotator cuff full-thickness tear. Magnetic resonance imaging and ultrasound [46] are comparable in efficacy and helpful in diagnosis, although both have a false positive rate of 15–20%. [47] MRI can reliably detect most full-thickness tears, although very small pinpoint tears may be missed.
Chicago Bulls point guard Lonzo Ball had another surgery on his left knee, the third procedure in the last 14 months. Ball underwent a cartilage transplant on March 20. Uncertainty has shrouded ...
Timing is important to wound healing. Critically, the timing of wound re-epithelialization can decide the outcome of the healing. [11] If the epithelization of tissue over a denuded area is slow, a scar will form over many weeks, or months; [12] [13] If the epithelization of a wounded area is fast, the healing will result in regeneration.