Local leg pain usually guides patients toward treating the right muscle group. The NYU Langone Medical Center reports that patients may feel a pop or snap at the time of muscle injury.
The long, thin sartorius muscle runs from the hip area in an arc across the thigh to the knee. Its action works to flex the knee, as when walking, and to rotate the leg, as when crossing the legs. Trauma-induced inflammation may make the entire front of the thigh, which includes the four quadriceps muscles, sore and swollen.
Although resting alleviates leg pain, complete bed rest beyond the acute inflammatory stage can have a backlash effect. Unused muscles rapidly begin to stiffen and shorten. Rather than hindering recovery, gentle stretching and exercise assist in suppling and lengthening muscles. The NYU Langone Medical Center recommends frequent daily stretching after the muscle injury, beginning as soon as patients can do so without pain.