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Baker's cyst

baker's cyst treatment, baker's cyst behind knee
A Baker's cyst, also known as a popliteal cyst, is a benign swelling of the semimembranosus or more rarely some other synovial bursa found behind the knee joint It is named after the surgeon who first described it, William Morrant Baker 1838–18961 It is not a "true" cyst, as an open communication with the synovial sac is often maintained

Contents

  • 1 Cause
  • 2 Diagnosis
  • 3 Treatment
  • 4 Gallery
  • 5 References
  • 6 External links

Causeedit

In adults, Baker's cysts usually arise from almost any form of knee arthritis eg, rheumatoid arthritis or cartilage particularly a meniscus tear Baker's cysts in children do not point to underlying joint disease Baker's cysts arise between the tendons of the medial head of the gastrocnemius and the semimembranosus muscles They are posterior to the medial femoral condyle

The synovial sac of the knee joint can, under certain circumstances, produce a posterior bulge, into the popliteal space, the space behind the knee When this bulge becomes large enough, it becomes palpable and cystic Most Baker's cysts maintain this direct communication with the synovial cavity of the knee, but sometimes, the new cyst pinches off A Baker's cyst can rupture and produce acute pain behind the knee and in the calf and swelling of the calf muscles

Diagnosisedit

Diagnosis is by examination A Baker's cyst is easier to see from behind with the patient standing with knees fully extended It is most easily palpated felt with the knee partially flexed Diagnosis is confirmed by ultrasonography, although if needed and there is no suspicion of a popliteal artery aneurysm then aspiration of synovial fluid from the cyst may be undertaken with care An MRI image can reveal presence of a Baker's cyst

An infrequent but potentially life-threatening complication, which may need to be excluded by blood tests and ultrasonography, is a deep vein thrombosis DVT Quick assessment of the possibility of DVT may be required where a Baker's cyst has compressed vascular structures, causing leg edema, as this sets up conditions for a DVT to develop

A burst cyst commonly causes calf pain, swelling and redness that may mimic thrombophlebitis

Ultrasound image of Baker's cyst

Treatmentedit

Baker's cysts usually require no treatment unless they are symptomatic It is very rare that the symptoms are actually coming from the cyst In most cases, there is another disorder in the knee arthritis, meniscal cartilage tear, etc that is causing the problem Initial treatment should be directed at correcting the source of the increased fluid production Often rest and leg elevation are all that is needed If necessary, the cyst can be aspirated to reduce its size, then injected with a corticosteroid to reduce inflammation Surgical excision is reserved for cysts that cause a great amount of discomfort to the patient A ruptured cyst is treated with rest, leg elevation, and injection of a corticosteroid into the knee

Baker's cysts in children, unlike in older people, nearly always disappear with time, and rarely require excisioncitation needed

Ice pack therapy may sometimes be an effective way of controlling the pain related to Baker's cystcitation needed Heat is also commonly usedcitation needed A knee brace can offer support giving the feel of stability in the jointcitation needed

Rest and specific exercise
Many activities can put strain on the knee, and cause pain in the case of Baker's cyst Avoiding activities such as squatting, kneeling, heavy lifting, climbing, and even running can help prevent pain Despite this, some exercises can help relieve pain, and a physiotherapist may instruct on stretching and strengthening the quadriceps and/or the patellar ligamentcitation needed

Galleryedit

Referencesedit

Notes

  1. ^ "William Morrant Baker" Who Named It 

Bibliography

  • Hellmann, DB 2005 "Chapter 20: Arthritis & Musculoskeletal Disorders" In Tierney LM, Jr; McPhee SJ; Papadakis MA Current Medical Diagnosis & Treatment 44th ed Philadelphia, PA: F A Davis Company ISBN 0-07-145323-7 
  • Joint Healingcom-Baker's Cyst

External linksedit

  • Definition and Treatment

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Baker's cyst


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    Baker's cyst beatiful post thanks!

    29.10.2014


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