Weakness in external (lateral) rotation of the hip indicates involvement of which of the following muscles?

• Piriformis M

• Obturator externus M

• Obturator internus M

• Quadratus femoris M

Which of the following muscles abduct the hip?

• Gluteus medius

• Tensor fascia lata

• Gluteus minimus

• Gracilis

Which of the following muscles produce hip flexion?

• Iliopsoas

• Adductor longus

• Sartorius

• Biceps femoris

The superior gluteal N. innervates the

• Gluteus medius

• Tensor fascia lata

• Gluteus minimus

• Gluteus maximus

Loss of sensory innervation on the medial aspect of the thigh indicates damage to

• Femoral N

• Sciatic N

• Saphenous N

• Obturator N

Which of the following statements are correct about abduction of the hip

• Hip abduction is produced primarily by the gluteus medius and gluteus minimus

• When standing the hip will drop to the side of the weak abductors

• Strong hip abduction is needed to maintain a level pelvis during unilateral stance

• One cannot compensate for poor hip abduction during walking and thus must be confined to a wheelchair

Which of the following statements is correct about weakness in the iliopsoas?

• Active hip flexion will be weak

• Trunk stability will be reduced with patient tending to fall backward while sitting

• Straight leg raises with patient supine will be difficult

• There may be a straightening of the lumbar spine (decrease lordosis)

Which of the following muscles of the lower extremity contract eccentrically to control forward trunk flexion?

• Gluteus maximus

• Iliopsoas

• Biceps femoris

• Rectus femoris

Which of the following hip muscles will control hip flexion by contracting eccentrically?

• Hamstring

• Iliopsoas

• Gluteus maximus

• Sartorius

Hyperextension of the hip is limited by:

• The iliofemoral ligament

• The ischiofemoral ligament

• The pubofemoral ligament

• The round ligament of the femur