Bursitis is an inflammation a small fluid-filled sac called bursa that lubricates to reduce friction between a bone and muscle, skin or tendon. The most common places bursitis occurs is the olecranon and prepatellar bursae, but can also occur at the superficial infrapatellar and subcutaneous calcaneal bursea (Khodee, 2017). There various type of bursitis all of which depend on the affected bursa location. The commonly affected areas of the condition include the elbow, shoulder, hip, knees, and calf. The primary cause of this condition is sports injuries and repetitive movements although other factors such as bad posture, some types of arthritis, diabetes and certain medications effects may also cause bursitis (Sayegh & Strauch, 2014).
The exact prevalence and incidence of bursitis are not known. However, according to the report given by national health interview survey on disability, the incidence of bursitis is approximated to be 560 cases per every 100,000 admissions (Rhyou et al., 2016). The prevalence rate is estimated to be 32 cases in every 1000 people (Rhyou et al., 2016). Bursitis is a very common condition that even affects healthy individuals. It can occur at any age and affects both genders although the attack rate depends on the type of bursitis. For example, the incidence of trochanteric bursitis is higher in middle-aged groups as compared to elderly adults while prepatellar and septic bursitis commonly affects males than females.