Meniscus Lesions

In cases of isolated meniscus lesion, there is a lack of evidence to support the theory that repair of the meniscus prevents progression of osteoarthritis [22, 59]. However, concomitant ACL reconstruction is usually described as one of the most favorable factors of successful meniscal repair. Several studies [15, 60, 61] showed a high success rate of meniscal repair with concurrent ACL... 

Traumatic or degenerative meniscal lesions are a frequent problem. The meniscus cannot regenerate after resection. These lesions often progress and lead to osteoarthritis. Collagen meniscal implants have been used in clinical practice to regenerate... 

Fig. 21.19 (a) Model of a semi-circular cartilaginous disk (Meniscus) that resides in the knee joint, (b) Molded bacterial cellulose meniscus, (c) Implantation of the construct into a created meniscal lesion in vivo. The traction sutures are visible on the outer third of the meniscus. The seeded implant (Arrow 1) is inserted into the created meniscal lesion with an Adson forcep. The insertion of the implant is facilitated by the use of a hemostat, opening the lesion (arrow 2)... 

Tears of the medial or lateral meniscus are the most common cause of internal derangement found in the knee joint. Most lesions involve the medial meniscus because of the nature of its attachment about its periphery, which makes it less mobile than the lateral meniscus and more subject to injuries. A "bucket handle" lesion is usually found in young people, whereas a horizontal, posterior lesion is more apt to be found in the middle aged and the elderly patient. There usually is a history of acute trauma, which resulted in swelling, pain, and disability of the knee. 

Meniscal cysts are parameniscal lesions filled with thick mucoid fluid that are usually secondary to degenerative meniscal tears. They affect more commonly the lateral meniscus and the right knee and are associated with horizontal or oblique cleavage meniscal tears. From the pathomechanical standpoint, the synovial fluid enters the meniscal body and produces a small intrameniscal cyst. Fluid... 

Meniscal ossicles are rounded bodies embedded within a meniscal horn, the posterior horn of the medial meniscus being the most commonly affected. These rare lesions, which consist of a peripheral bony... 

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