A bursa is a small, fluid-filled sac that acts as a cushion between bones, tendons, and muscles near joints. The human body contains over 150 bursae, with the largest and most commonly irritated ones located in the shoulder, elbow, hip, and knee. When a bursa becomes inflamed — usually from repetitive motion, pressure, or injury — the condition is called bursitis**, causing pain, swelling, and limited movement.
The word also refers to Bursa, a city in northwestern Turkey that was the first capital of the Ottoman Empire. Founded in the 2nd century BCE, Bursa contains some of the finest Ottoman architecture, including the Green Mosque and the Great Mosque, and is a UNESCO World Heritage site. The city is also famous for Turkish baths, silk production, and İskender kebap — a dish of döner meat over bread with tomato sauce and yogurt.
Why It Matters
In anatomy, the bursa is a humble but essential structure. Bursitis is one of the most common joint complaints, affecting athletes, manual laborers, and office workers alike. “Housemaid’s knee” and “student’s elbow” are common names for bursitis caused by repeated kneeling or leaning — occupational hazards of specific postures.
In geography, Bursa is one of Turkey’s most historically significant cities. As the Ottoman Empire’s first capital, it contains the tombs of the empire’s founders and architectural masterpieces that influenced Islamic design for centuries.
Examples
- Bursitis: Common in shoulders (rotator cuff), hips (trochanteric), and knees (prepatellar).
- Bursa, Turkey: The birthplace of the Ottoman state.
- İskender kebap: A Bursa culinary invention now famous throughout Turkey.
Related Terms
- Bursitis, joint, tendon
- Ottoman Empire, Turkey, architecture
- Inflammation, repetitive strain injury