Q- Which of the following ligaments is most likely torn in a case of posterior dislocation of the hip?
A- Iliofemoral ligament
B- Ischiofemoral ligament
C- Sacrotuberous ligament
B- Ischiofemoral ligament- The ischiofemoral ligament is located posteriorly and is the ligament most likely torn during a posterior hip dislocation, the most common type of hip dislocation. Iliofemoral and sacrotuberous ligaments are not typically torn in this injury pattern.
Q- Which one of the following tests can be used to distinguish between Folic acid and vitamin B12 deficiencies?
A- Serum cystathionine level
B- Serum homocysteine level
C- Serum methionine level
D- Serum methylmalonate level
D- Serum methylmalonate level- Vitamin B12 deficiency leads to elevated methylmalonic acid, while folate deficiency does not. Homocysteine increases in both conditions, so it cannot distinguish them.
Q- Which of the following conditions is most likely to be presented with primary amenorrhea?
A- Pituitary adenoma
B- Pregnancy
C- Turner syndrome
C- Turner syndrome- Turner syndrome (45,XO) commonly presents with primary amenorrhea due to gonadal dysgenesis. Pregnancy and pituitary adenoma typically present with secondary amenorrhea rather than primary.
2 thoughts on “Repeated USMLE Questions Step 1- Review- 335”
Primary amenorrhea means that the patient had never have menstruation at all. This only happens in congenital disease, not pregnancy. Pregnant women must have menstruation before pregnancy and then, amenorrhea due to pregnancy which is considered secondary amenorrhea. Thank you so much for your feedback.
Sir here is pregnancy i think I saw it in alot book why here you mentioned Turner syndrome
Primary amenorrhea means that the patient had never have menstruation at all. This only happens in congenital disease, not pregnancy. Pregnant women must have menstruation before pregnancy and then, amenorrhea due to pregnancy which is considered secondary amenorrhea. Thank you so much for your feedback.
Sir here is pregnancy i think I saw it in alot book why here you mentioned Turner syndrome