Which action does the pectineus contribute to, in addition to hip flexion?

Which action does the pectineus contribute to, in addition to hip flexion?

• A. Hip abduction
• B. Hip extension
• C. Hip adduction
• D. External rotation

Answer: (C)

Pectineus sits on the front inner thigh and pulls the thigh toward the midline when it contracts. That medial pull adds hip adduction to its flexion action. It can also help medially rotate the thigh when the hip is flexed, but it does not produce abduction, extension, or external rotation. So, in addition to flexion, the pectineus contributes to hip adduction.

Pectineus sits on the front inner thigh and pulls the thigh toward the midline when it contracts. That medial pull adds hip adduction to its flexion action. It can also help medially rotate the thigh when the hip is flexed, but it does not produce abduction, extension, or external rotation. So, in addition to flexion, the pectineus contributes to hip adduction.