subcutaneous bursa
Quick Summary
A subcutaneous bursa is a type of small sac found within the mammalian body, typically located between skin and bony prominences where friction or stress occurs. These bursae are often ill-defined clefts at the junction of subcutaneous tissue and deep fasciae. They only develop a distinct wall when they become abnormal and are sometimes categorized as adventitious bursas, which arise from repeated shearing stresses. Bursae, in general, cushion and reduce friction between various body tissues around joints, aiding smooth movement. Inflammation of any bursa is known as bursitis.12
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