Balanitis xerotica obliterans (BXO) or Lichen sclerosus (LS) of the genitalia is a chronic and progressive inflammatory disorder involving the skin of the penis. It commonly affects the foreskin but may also affect the penis and urinary opening as well as the urine tube (urethra).
A long, thin, strap-like muscle; runs diagonal over anterior thigh. O- anterior superior iliac spine I- medial tibial surface A- flexes leg, flexes & laterally rotates thigh
Structure[edit] The sartorius muscle is the longest muscle in the body and arises by tendinous fibres from the anterior superior iliac spine, running obliquely across the upper and anterior part of the thigh in an inferomedial direction.