Types of Shoulder Injuries. There are many types of shoulder injuries: Fractures are broken bones. Fractures commonly involve the clavicle (collar bone), proximal humerus (top of the upper arm bone), and scapula (shoulder blade). Dislocations occur when the bones on opposite sides of a joint do not line up.
160 degrees Fahrenheit. In a 350 degree oven you can achieve this at approx. 30 minutes per pound. Remove the roast when it reaches 155 degrees as it will carry-on cooking to an internal temperature of 160 degrees out of the oven.
Sear the lamb roast for 15 minutes at the higher oven temperature (450 degrees F.), then turn the oven to the lower temperature (325 degrees F.) for the rest of the cooking time. Do Not Cover the roast.