Muskoloskeletal System Flashcards
3 Components of the Muskoloskeletal System
Bones, Joints & Muscles
Provide a frame (shape) to keep the body supported. Help to produce movement with the aid of the muscles.
Bones
It provides a cushion between bones and tendons and/or muscles around a joint (i.e, shoulder or patella).
Bursa
A layer of resilient layer in the synovial joints that covers the surface of opposing bones.
- Cushion of Bones
Cartilage
Is the place of union of two or more bones.These are functional units because they permit ADLs.
Joints
Freely movable joints because they have bones that are separated from each other and enclosed in a joint cavity. The cavity is filled with a lubricant called synovial fluid, the principal role of synovial fluid is to reduce friction between the articular cartilage of synovial joints during movement.
Synovial Joints
Muscles that are attached to bone by a tendon.
Skeletal
Is a tough band of fibrous connective tissue that usually connects muscle to bone.
Tendon
Fibrous bands running directly from one bone to another bone that strengthen the joint and help prevent movement in undesirable directions.
Ligaments
The movements possible with synovial joints are: (5)
- Abduction
- Adduction
- Extension
- Flexion
- Rotation
Bending a limb at a joint
1.Flexion:
Straightening a limb at a joint
2.Extension:
Moving a limb away from the midline of the body
3.Abduction:
Moving a limb toward the midline of the body
4.Adduction:
Turning the forearm so that the palm is down
5.Pronation:
Turning the forearm so that the palm is up
6.Supination:
Moving the arm in a circle around the shoulder
7.Circumduction:
Moving the sole of the foot inward at the ankle
8.Inversion:
Moving the sole of the foot outward at the ankle
9.Eversion:
10.Rotation: Moving the head around a central axis
10.Rotation:
Moving a body part forward and parallel to the ground
11.Protraction:
Moving a body part backward and parallel to the ground
12.Retraction:
Raising a body part
13.Elevation:
Lowering a body part
14.Depression:
Widespread musculoskeletal pain lasting 3 months or longer and associated with fatigue is suggestive of _______
fibromyalgia
____ is usually felt as cramping or aching of muscles.
Myalgia
_____ cause sharp pain that increases with movement (other bone pain usually feels “dull” and “deep” and is unrelated to movement).
Fractures
A fractured bone may also be _____. Report findings immediately. Never attempt to realign broken bones.
Misaligned
Monitor _____ and peripheral vascular circulation distal to the injury until the patient’s care is transferred.
vital signs
Preparation for the Physical Exam (2)
Screening musculoskeletal examination
Complete musculoskeletal examination
Needed equipment for physical exam
Tape measure
Goniometer, to measure joint angles
Skin marking pen
- Inspect (2)
Size and contour of joint
Skin and tissues over joint
Abnormal Findings
_____ may be due to excess joint fluid (effusion), thickening of the synovial lining, inflammation of surrounding soft tissue (bursae, tendons), or bony enlargement.
Swelling
_____ include dislocation (one or more bones in a joint being out of position), subluxation (partial dislocation of a joint), contracture (shortening of a muscle leading to limited ROM of joint), or ankylosis (stiffness or fixation of a joint).
Deformities
Partial dislocation of a joint
subluxation
Shortening of a muscle leading to limited ROM of joint
contracture
stiffness or fixation of a joint
ankylosis
Ask for active ROM while stabilizing the body area proximal to that being moved. If you see a limitation, gently attempt passive motion. Anchor the joint with one hand while your other hand slowly moves it to its limit. The normal ranges of active and passive motions should be the same.
If any limitation or any increase in ROM occurs, use a goniometer to measure the angles precisely
- Range of Motion
Abnormal Findings
_____ is an audible and palpable crunching or grating that accompanies movement. It occurs when the articular surfaces in the joints are roughened, as with rheumatoid arthritis
Crepitation
- Test the strength of the prime mover muscle groups for each joint. Repeat the motions you elicited for active ROM. Now ask the person to flex and hold as you apply opposing force. Muscle strength should be equal bilaterally and should fully resist your opposing force. (Note: Muscle status and joint status are interdependent and should be interpreted together.
- A wide variability of strength exists among people. You may wish to use a grading system from no voluntary movement to full strength, as shown.
- Muscle Testing
Full ROM against gravity, full resistance, 100, Normal
Grade: 5
Full ROM against gravity, some resistance, 75, Good
Grade: 4
Full ROM with gravity, 50, Fair
Grade: 3
Full ROM with gravity eliminated (passive motion)
, 25, Poor
Grade: 2
Slight contraction, 10, Trace
Grade: 1
No contraction, 0, Zero
Grade: 0
- Inspect: Joint area
- Palpate: As person opens mouth
Motion and expected range
Open mouth maximally
Protrude lower jaw and move side to side
Stick out lower jaw - Palpate: Muscles of mastication
Temporomandibular Area