Pre-patellar bursitis/ housemaid’s knee (acute injury)
Etiology
A subcutaneous prepatellar bursa may, at times, become distended with fluid due to the constant irritation of kneeling, or as a result of a blow on the prominence of the patella. This condition is known as Housemaid’s Knee.
Diagnosis
The distended bursa manifests as a fluctuant mass anterior to the patella. Inflammation and secondary infection are possible complications. The portal of bacterial entry may be a graze or laceration near the knee, infected eczema, or athlete’s foot more distally.
Early management
This should include prevention of further mechanical irritation, rest, and anti-inflammatory medication. Regular application of ice and ultrasound may help the inflammation to settle more quickly. Occasionally, a cortisone injection into the bursa can be helpful but must be avoided if there is any possibility of infection. In the presence of cellulitis or any evidence of bacterial infection, antibiotics are indicated. Abscess formation will, of course, require incision and drainage.
Rehabilitation
If the bursitis has caused compensatory movements to occur such as limping or hip hitching then these problems must be addressed with an appropriate stretching and strengthening program plus gait re-education.
Taken from the sports injury section of anatomy.tv