Chapter 10 - Shoulder Joint - Clinical Exercises

Stand and hold a cane or weight bar in both hands. With your arms as far apart as possible and elbows extended, raise the bar. What predominant shoulder motion is occurring?

Scaption

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. What type of contraction is occurring?

- Concentric contraction

Lie prone on a table with your arm over the edge and with your shoulder flexed 90 degrees, elbow extended, and weight in your hand. Lift the weight away from the table in a sideward motion. What type of contraction (isometric, concentric, or eccentric) is occurring?

- Concentric contraction of the shoulder horizontal abductors

Stand with your arm abducted at the side of your body, elbow flexed to 90 degrees, and hold a loop of elastic tubing whose other end is anchored in front of you at the same level as your hand. In a sawing motion (back and forth motion like you are sawing wood), pull back on the tubing. What type of contraction is occurring?

- Concentric contraction of the shoulder hyperextensors

Stand with your arm abducted at the side of your body, elbow flexed to 90 degrees, and hold a loop of elastic tubing whose other end is anchored in front of you at the same level as your hand. In a sawing motion (back and forth motion like you are sawing wood), pull back on the tubing. Return to the starting position after you have hyperextended your shoulder. What type of contraction is occurring?

- Eccentric contraction of the shoulder hyperextensors

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. What muscles are prime movers of shoulder lateral rotation?

- Infraspinatus muscle - Teres minor muscle - Posterior deltoid muscle

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. Hold for the count of five. What are the prime movers for shoulder lateral rotation?

- Infraspinatus muscle - Teres minor muscle - Posterior deltoid muscle

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. Hold for the count of five. What type of contraction is occurring?

- Isometric contraction

Stand with your arm abducted at the side of your body, elbow flexed to 90 degrees, and hold a loop of elastic tubing whose other end is anchored in front of you at the same level as your hand. In a sawing motion (back and forth motion like you are sawing wood), pull back on the tubing. What muscles are prime movers of shoulder hyperextension?

- Latissimus dorsi muscle - Posterior deltoid muscle

Stand with your arm abducted at the side of your body, elbow flexed to 90 degrees, and hold a loop of elastic tubing whose other end is anchored in front of you at the same level as your hand. In a sawing motion (back and forth motion like you are sawing wood), pull back on the tubing. Return to the starting position after you have hyperextended your shoulder. What muscles are prime movers in this shoulder joint motion (returning - eccentric)

- Latissimus dorsi muscle - Posterior deltoid muscle

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. Slowly return to the starting position. What is the shoulder joint motion?

- Shoulder medial rotation

Lie prone on a table with your arm over the edge and with your shoulder flexed 90 degrees, elbow flexed 90 degrees, and weight in your hand. Lift the weight away from the table in a sideward motion. Does flexing the elbow shorten the force arm?

- No

Lie prone on a table with your arm over the edge and with your shoulder flexed 90 degrees, elbow extended, and weight in your hand. Lift the weight away from the table in a sideward motion. What muscles are prime movers in shoulder horizontal abduction?

- Posterior deltoid muscle - Infraspinatus muscle - Teres minor muscle

Stand and hold a cane or weight bar in both hands. In what plane is the motion of shoulder horizontal abduction occurring?

- Scapular plane

The ability of a male gymnast to perform the iron cross maneuver on still rings may be limited by the strength of which group of shoulder joint muscles?

- Shoulder adductors (because the shoulder adductor muscles are trying to pull down toward the trunk while the person is trying to stay still)

Stand and hold a cane or weight bar in both hands. With your elbows approximately 12 inches apart and elbows extended, raise the bar. What shoulder motion is occurring?

- Shoulder flexion

Stand with your arm abducted at the side of your body, elbow flexed to 90 degrees, and hold a loop of elastic tubing whose other end is anchored in front of you at the same level as your hand. In a sawing motion (back and forth motion like you are sawing wood), pull back on the tubing. Return to the starting position after you have hyperextended your shoulder. What is this shoulder joint motion?

- Shoulder flexion

Lie prone on a table with your arm over the edge and with your shoulder flexed 90 degrees, elbow extended, and weight in your hand. Lift the weight away from the table in a sideward motion. What is this shoulder joint motion?

- Shoulder horizontal abduction

Stand with your arm abducted at the side of your body, elbow flexed to 90 degrees, and hold a loop of elastic tubing whose other end is anchored in front of you at the same level as your hand. In a sawing motion (back and forth motion like you are sawing wood), pull back on the tubing. What is the shoulder joint motion?

- Shoulder hyperextension

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. What is the shoulder joint motion?

- Shoulder lateral rotation

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. Hold for the count of five. What is the shoulder joint motion?

- Shoulder lateral rotation

Lie on your right side with your left elbow flexed to 90 degrees and holding a weight in your hand. Keep your left elbow resting on the left side of your body. Roll the weight up toward the ceiling. Hold for the count of five. What muscles are prime movers of shoulder medial rotation?

- Subscapularis muscle - Teres major muscle - Anterior deltoid muscle - Latissimus dorsi muscle - Pectoralis major muscle (clavicular & sternal portions)

Lie prone on a table with your arm over the edge and with your shoulder flexed 90 degrees, elbow extended, and weight in your hand. Lift the weight away from the table in a sideward motion. Why is this exercise easier than when the elbow is extended?

- With a shortened RA, there is less resistance that the force needs to move

Lie prone on a table with your arm over the edge and with your shoulder flexed 90 degrees, elbow extended, and weight in your hand. Lift the weight away from the table in a sideward motion. Does flexing the elbow shorten the resistance arm?

- Yes