Written By: Chloe Wilson, BSc(Hons) Physiotherapy
Reviewed by: KPE Medical Review Board
Housemaids knee, also known as prepatellar bursitis, is caused by inflammation of the knee bursa.
The prepatellar bursa, a small fluid-filled sac, sits in front of the kneecap providing cushioning and protection. If there is too much pressure on the bursa, it will produce more fluid to try and protect the knee and start to swell.
Prepatellar bursitis is usually caused by repetitive kneeling or a sudden blow to the front of the knee e.g. a fall.
Housemaids knee is the most common cause of front knee swelling and usually settles down within a few weeks with the correct home treatments, rarely requiring surgical intervention.
Here, we will look at the common causes, symptoms, treatment options and recovery process for Housemaids Knee.
Housemaids Knee is the most common form of knee bursitis.
Bursa are small fluid filled sacs found all over the body. Their job is to prevent friction between bone and soft tissues (muscles, tendons, skin and ligaments) and they act like a cushion.
The prepatellar bursa sits in front of the knee cap, just beneath the skin. When the prepatellar bursa gets irritated from friction or pressure, it produces extra fluid to protect the knee joint.
The bursa gradually gets inflamed and swells, becoming painful and putting pressure on the surrounding structures.
This swelling is known as prepatellar bursitis, or more commonly Housemaids Knee, and is the most common cause of swelling on top of the knee.
The most common causes of Housemaids knee are:
The most common symptoms of housemaids knee are:
Usually the doctor will be able to diagnose prepatellar bursitis just by looking at your leg - it doesn’t require an x-ray or MRI.
If the likely cause of housemaids knee is an infection, the doctor will remove some of the fluid and have it tested, and you may then be given antibiotics.
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Housemaids knee treatment usually consists of:
Generally, housemaids knee settles within a few weeks, with the correct prepatellar bursitis treatment. It is important to address any problem areas such as muscle imbalance to reduce the risk of the bursa swelling up again.
If you have already had housemaids knee, it is advisable to avoid kneeling on hard surfaces by using some sort of cushioning such as gel pads to prevent recurrence.
If prepatellar bursitis symptoms last more than 6 months with treatment, and are affecting activities of daily living, then surgery may be advised to remove the bursa.
Housemaids knee is one of the most common causes of knee pain kneeling and front knee swelling, but there are other options.
The suprapatellar bursa sits just above the knee joint between the quads tendon and the thigh bone. If you swelling and pain is slightly above the kneecap, check out the suprapatellar bursitis section.
The infrapatellar bursa sits slightly below the knee around the patellar tendon. If your pain and swelling is slightly below the knee rather than right over the front of the kneecap, have a look at the infrapatellar bursitis section.
Another common place to get bursitis is at the back of the knee, where there is inflammation of the popliteal bursa. You can find out more in the Bakers Cyst section.
There are a number of other causes of front knee pain other than Housemaids Knee such as:
If you want some help working out what is causing your pain, visit the Diagnose Your Pain section.
Page Last Updated: 05/02/24
Next Review Due: 05/02/26