Which one of the following bursa is affected in "housemaid's knee"?*Infrapetellar bursaPrepatellar bursaSemimebranosus bursaSuprapatella bursa

Analysis of the Question

"Housemaid's knee" refers to inflammation of a specific bursa around the knee, typically caused by frequent kneeling or pressure on the knee.

Identifying the Bursa

1. Infrapatellar bursa: Located below the kneecap, typically associated with patellar movements.
2. Prepatellar bursa: Situated in front of the kneecap, commonly inflamed due to repetitive kneeling.
3. Semimembranosus bursa: Found near the back of the knee, related to the semimembranosus muscle, not typically involved in "housemaid's knee."
4. Suprapatellar bursa: Located above the kneecap, allows for smooth movement but less often associated with kneeling injuries.

Conclusion

"Housemaid's knee" primarily affects the prepatellar bursa due to the pressure and friction caused by kneeling.

Final Answer

Prepatellar bursa is the one affected in "housemaid's knee."