Question

Greater trochanter is
A. Humerus
B. Radius
C. Ulna
D. Femur

Answer 1

Hint: The trochanter is the bony projection present towards the near end of the thigh bone. It is the site of attachment of several muscles in humans and most mammals.

Complete answer:
The trochanter is the point at which hip and thigh muscles joined with each other. It is an irregular and large prominence of the skeletal system.
The following two types of trochanter present in body:
Greater trochanter: It is also known as major trochanter, lateral process of the femur and the outer trochanter. It is a protrusion that is located at the proximal and lateral part of the shaft of the femur.
Lesser trochanter: It is also known as minor trochanter, medial process of femur and inner trochanter. It is a pyramidal shaped trochanter that is located on the proximal and medial part of the shaft of the femur.
The gluteus medius and minimus, obturator muscles get attached to the greater trochanter while iliacus muscles get inserted into the lesser trochanter.
The greater trochanter affects the mechanical stress of the hip joint and femoral neck. The lowering of greater trochanter reduces the mechanical stress of the joint and also improves the muscle contraction. The lateral displacement of a greater trochanter reduces the pressure in the joint.
The humerus is the arm bone while radius and ulna are the forearm bone.
So, the correct answer is option D, femur.

Note: The trochanteric bursitis is the inflammation of bursa at the greater trochanter part. The bursa is a thin sac that is filled with the fluid, its outer covering is known as synovial membrane. In bursitis, irritation and inflammation of synovial membranes occurs.