White adds that in addition to overuse and inactivity, osteoarthritis and rheumatoid arthritis can also contribute to pain and stiffness in the psoas muscle and surrounding muscles. Be sure to see ...

Background Osgood-Schlatter disease (OSD) of the knee in youth is one of the most frequent of anterior knee pain in athletes. There are several risk factors that contribute to this disease. Objective ...

Background Muscular tightness is frequently postulated as an intrinsic risk factor for a muscle injury in soccer. Further, hamstring, iliopsoas and quadriceps flexibility measurements are of clinical ...