Becker's cyst (other names – hernia of a popliteal pole, bursit a popliteal pole) – protrusion in the field of a popliteal pole which is formed owing to an inflammation in a knee joint. The popliteal cyst of Becker is shown clinically only when it already reached such sizes that begins to squeeze the nervous trunks and vessels located in a popliteal pole. The disease is followed by pain and restriction of bending in a knee joint, the sleep and paresteziya in the field of a sole are possible. Establishment of the diagnosis of a cyst of Becker is confirmed by data of MRT or ultrasonography of a knee joint. As treatment apply cyst punctures. According to indications make arthroscopic removal of a cyst of Becker.
Becker's cyst (other names – hernia of a popliteal pole, bursit a popliteal pole) – protrusion in the field of a popliteal pole which is formed owing to an inflammation in a knee joint.
At every second person on the back surface of a knee joint, between sinews of semi-webby and sural muscles the mucous intertendinous bag which is option of a normal anatomic structure is located. At an inflammation in a knee joint liquid which through thin cracks can get into an intertendinous bag collects. As a result the bag increases in sizes, pains and restriction of movements in a knee joint develop. The popliteal cyst of Becker is formed at exchange and dystrophic (for example, at diseases and post-traumatic changes of meniscuses) and inflammatory (rheumatoid arthritis, etc.) diseases.
At the first stages Becker's cyst proceeds asymptomatically or is followed by weak unpleasant feelings. At further increase the cyst begins to squeeze the nerves located nearby, causing pains, a pricking or a sleep in the field of a sole and preventing the patient to bend a knee joint completely. At survey visible opukholevidny education in a popliteal pole sometimes comes to light. To the touch Becker's cyst elastic, dense. Its palpation is followed by weak morbidity.
At a rupture of a cyst of Becker liquid from a tendinous bag gets into muscles, becoming the reason of pains and hypostasis on the back surface of a shin. In certain cases Becker's cyst squeezes shin veins, resulting in stagnation of blood, development of phlebitis and formation of blood clots. The come-off blood clot can migrate in lungs and to become the reason of a life-threatening sick complication – a thrombembolia of a pulmonary artery. In rare instances the cyst pressure upon muscles, blood vessels and nerves causes a sdavleniye syndrome – the gross violation of exchange processes in bones and soft fabrics leading to development of necroses and osteomyelitis.
The diagnosis of a cyst of Becker is exposed by the traumatologist or the orthopedist on the basis of complaints of the patient, a characteristic clinical picture and results of additional researches. For confirmation of the diagnosis ultrasonography and MRT of a knee joint is used. In difficult cases for diagnostics or planning of operation carry out an arthroscopy of a knee joint.
treatment should be carried out only under the supervision of a doctor. Self-treatment is unacceptable!!!
In office of orthopedics and traumatology perhaps expeditious and conservative treatment of a cyst of Becker. Conservative therapy consists in a puncture of a cyst of Becker for removal of inflammatory liquid and the subsequent introduction to a cavity of an intertendinous bag of kortikosteroidny medicines (for example – a hydrocortisone). In parallel carry out treatment of the main disease of a knee joint (therapy of rheumatoid arthritis, removal of the damaged part of a meniscus etc.).
Expeditious treatment of a cyst of Becker is shown at its long existence, the big size, a sdavleniye of nerves, blood vessels and soft fabrics, restriction of bending of a knee joint and unsuccessfulness of conservative therapy. Operation is carried out under local anesthesia. Over protrusion do a small section, allocate Becker's cyst, stitch a junction of a tendinous bag with a knee joint and tie up then the cyst is deleted. In recent years for removal of a cyst of Becker often use , allowing to reduce injury of surgery.