BAKER'S  CYST                                             KANDIL NOTES

INTRODUCTION

  • Baker’s cysts are fluid-filled sacs most commonly encountered in the back of the knee

  • They can affect any age group

  • Baker’s cysts are benign, non-cancerous, and generally harmless

  • They can appear, disappear, and change in size over time

CAUSES 

  • A history of inflammation, meniscus tear, or arthritis is present in most cases

  • However, in many cases, the cause is unknown

SIGNS AND SYMPTOMS

  • Knee Baker’s cysts are usually 1–2 cm soft and compressible masses that are mobile

  • There is no warmth or redness or associated skin changes

  • Aching and fullness behind the knee is common with some patients complaining of pain and tenderness as well

  • Large baker’s cysts may cause irritation of the nerves in the back of the knee leading to numbness and/or tingling

TREATMENT​​

  • Observation is the most common treatment in the majority of patients if it doesn't hurt or interfere with activities of daily living or quality of life

  • Anti-inflammatories can also be helpful to decrease inflammation in the knee joint

  • If the cyst becomes associated with pain, interference with activities, and an increase in size, intervention may be appropriate

  • Aspiration can be considered by removing the fluid from the cyst with a needle. This is usually done with ultrasound guidance

  • Surgery is reserved for cases that are refractory to conservative treatment. Surgery involves the excision of the entire ganglion complex, including cyst, pedicle, with low recurrence rates

 PREVENTION

  • The best way to prevent a knee baker’s cyst is to minimize inflammation and injury to the knee joint

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