Muscle Length LAB

Question 1

Pectoralis Major: Clavicular Fibers

MA
Fulcrum
SA

Answer 1

Clavicular fibers.

MA= lateral epicondyle of humerus
Fulcrum= acromion process
SA= parallel to support surface

• Measure the angle from supporting surface to humerus*
• Do not allow trunk rotation*

Start arm across chest, keep arm straight, and bring back completely out to side

Question 2

Pectoralis Major: Sternal fibers

Answer 2

Landmarks are same for clavicular fibers.

MA= lateral epicondyle of humerus
Fulcrum= acromion process
SA= Parallel to support surface

Start position: Hand on opposite hip, arm stretched fully. Bring hand back out near head ~120 degrees until it falls as far as it can go.

Question 3

Pectoralis minor:

SA
MA
Fulcrum

Answer 3

Measure distance from anterior acromion to supporting surface.

Arm should be at sides with palms up and lumbar spine flat?

Using a tape measure to see distance of pec minor off table.

NO SA MA OR FULCRUM

Question 4

Latissumus Dorsi/Teres Major

SA
MA
Fulcrum

Answer 4

SA= lateral midline of trunk
Fulcrum= Lateral acromion process
Moving arm= lateral epicondyle of humerus

We are measuring the amount of shoulder flexion
Watch out for lumbar lordosis. Stop where the lumbar spine adds contribution

Question 5

Biceps

SA,Fulcrum, MA

Answer 5

SA= trunk midline
Fulcrum = lateral acromion process
MA= lateral epicondyle of humerus

Arm measures lies off of table.

Question 6

Triceps

SA, Fulcrum, MA

Answer 6

SA= midline of humerus
Fulcrum= Lateral epicondyle of humerus
MA= radial styloid process

Patient is sitting or standing and bring palm of hand towards back of neck. Measure this position.

Question 7

Thomas test? What is it designed to detect?

Answer 7

Designed to detect hip flexor tightness or hip joint capsular contracture.

Patients sit on edge of table and is rocked back to a supine position while holding both knees. Patient crossing arms over chest now.

With both knees flexed, therapist positions knees to ensure pelvis is in a neutral position, then patient holds opposite knee and drops the other one slowly until resistance is met.

Question 8

What happens if the test is positive?

Answer 8

The thigh of lowered limb does not contact surface of table

Rectus femoris tightness may be attributed to a positive test as well This means you need to do an Ely’s test to test rectus femoris

Question 9

Hip Flexors test for rectus femoris aka Ely’s test.

Answer 9

SA= greater trochanter
Fulcrum= lateral epicondyle of femur
movement arm= lateral malleolus

• Don’t allow hip to flex on same side being assessed!
  One leg must be down.

hamstring MMT position

Question 10

What does Ober’s test for?

Answer 10

IT band, Glute Med, TFL

Question 11

Ober’s Test

Answer 11

Patient side lying.
Lower leg flexed

Upper leg held in arm with knee in hand , and shin on forearm.

With hand on asis, bring leg into extension slightly to take rectus femoris out of picture. Then find nuetral. Have inclinometer measure 90 degrees.

Now lower leg until leg rests. Measure that degree. Inclinometer placed over lat epicondyle.

Question 12

Hamstrings test is what?

Answer 12

90/90 or politeal angle test.

Both actively or passively

SA= greater trochanter
fulcrum= lateral epicondyle of femur
MA= lateral malleolus

Hip flexed to 90 degrees. Then extend leg. Measure that degrees with gonio.