Rates of<unk> s by age and sex<unk> s are among the most common conditions affecting the shoulder. A<unk>  can be caused by the weakening of the<unk> <unk>  tendons. This weakening can be caused by age or how often the<unk> <unk>  is used. Adults over the age of 60 are more susceptible to a<unk> , with the overall frequency of<unk> s increasing with age. By the age of 50 10% of people with normal shoulders have a<unk> . In an autopsy study of<unk> s, the incidence of partial<unk> s was 28%, and of complete rupture 30%. Frequently,<unk> s occurred on both sides and occurred more often with females and with increasing age. Other cadaver studies have noted intratendinous<unk> s to be more frequent (7.2%) than bursal-sided (2.4%) or articular-sided<unk> s (3.6%). However, clinically, articular-sided<unk> s are found to be 2 to 3 times more common than bursal-sided<unk> s and among a population of young athletes, articular-sided<unk> s constituted 91% of all partial-thickness<unk> s.<unk> s may be more common in men between the ages of 50–60, though between 70–80 there is minimal difference across genders. In terms of the size of<unk> s, a study compared the ages of patient to the size of<unk> s. It was emphasized the older you are, the more massive of a<unk>  you will have. It was found that mean age increased with larger<unk>  sizes (small<unk> s 59 years, medium<unk> s 62 years, large<unk> s 64 years, and massive<unk> s 66 years).
Rotator cuff tear
Shoulder impingement syndrome
Biceps tendon rupture
Shoulder problem
Iliotibial band syndrome
Subacromial bursitis
Retrocalcaneal bursitis
Thoracic outlet syndrome