Final answer:
The greater and lesser trochanters are bony projections on the femur, connected by the intertrochanteric line anteriorly and the intertrochanteric crest posteriorly, serving as muscle attachment sites.
Step-by-step explanation:
The term trochanter roll refers to a supportive device, but in describing anatomy, we often talk about the trochanters as bony prominences on the proximal end of the femur (thighbone).
The greater trochanter is a large, palpable bony projection on the lateral side of the femur, just above the neck of the femur, to which multiple muscles attach, granting them additional leverage.
The lesser trochanter is smaller, located medially and below the neck, with a single powerful muscle attached to it.
The intertrochanteric line is a ridge that runs between the greater and lesser trochanters on the anterior side of the femur, and similarly on the posterior side, the trochanters are connected by the interthrochanteric crest.