Yes, the patella is distal to the femur. This is because the patella is more distant than the femur to the attachment point to the trunk of the body. You can also say the femur is proximal to the patella.
The patella is a bone that rides over the top of the knee. Adequate hamstring strength can help keep the patella properly aligned and reduce overall knee pain, but there are no actual muscles in the patella.
The quadriceps muscle goes over the patella. The patella is encased in the quadriceps tendon. This tendon inserts on the tibia at the tibial tuberosity. Other muscles from the thigh have tendons which go underneath the patella.