Date: _____________________
Directions: Answer using complete sentences! Use the information you have been given to answer questions about: Osteoporosis. Challenge yourself and try the highest level you can!
Subject: The Skeletal System: Artificial Joints.
Level#1: Nearly one-and-a-half million people have joint replacements each year. Doctors use an artificial joint to replace the damaged joints. Most common are hips and knee replacements. Artificial joints generally wear out within ten years.
1. How many people a year have joint replacements?
2. What do doctors use to replace damaged joints?
3. What are the most common joints that are replaced?
Level#2: Nearly one-and-a-half million people have joint replacements each year. Doctors use an artificial joint to replace the damaged joints. Most common are hips and knee replacements. Artificial joints generally wear out within ten years. Bone cement fixation is one method used for joint replacement. The artificial joint is placed between two bones. Bone cement sets it in place. The new joint is designed to function like the natural joint. In another method, bone cement is not used. The artificial joint and the bone are designed to fit and lock together exactly.
1. What do doctors do to replace people's damaged joints?
2. What are the most common joints replaced and how long do they last?
3. How many methods of joint replacement are there and how are they different from each other?
Level#3: Nearly one-and-a-half million people have joint replacements each year. Doctors use an artificial joint to replace the damaged joints. Most common are hips and knee replacements. Artificial joints generally wear out within ten years. Bone cement fixation is one method used for joint replacement. The artificial joint is placed between two bones. Bone cement sets it in place. The new joint is designed to function like the natural joint. In another method, bone cement is not used. The artificial joint and the bone are designed to fit and lock together exactly. Artificial joints may not be needed in the future. Recently, engineers at the University of California have developed an artificial tissue that works like real cartilage. This tissue may help repair injured or arthritic joints. The artificial tissue may also be able to bring back flexibility to people with damaged joints.
1. What do doctors use to replace damaged joints, which are the most common to be replaced, and how long do replacement joints last?
2. Explain both methods used by doctors to replace damaged joints.
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