objective 3 (1) Flashcards
what are the functions of the musculoskeletal system?
Protection of vital organs
* Mobility and movement
* Facilitate return of blood to the heart
* Production of blood cells (hematopoiesis)
* Reservoir for immature blood cells
* Reservoir for vital minerals
what is the structure of the musculoskeletal system?
- 206 bones in the body
- Joints
- Muscles
- Attached to bones and other structures by tendons
- Encased in a fibrous tissue called fascia
- Contraction of muscle causes movement
muscles
process of bone formation
osteogensis
the process of formation of the bone matrix and deposition of minerals
ossification
what are the regulating factors of bones?
- Stress and weight-bearing
- Vitamin Parathyroid hormone and calcitonin
- Blood supply
what are the age-related changes?
- Effects of musculo-skeletal changes range from mild discomfort and
decreased ability to perform activities of daily living (ADL) to severe,
chronic pain and immobility. - Decreased muscle cells; loss of elasticity in ligaments, cartilage; joint
problems; decreased bone density - Osteoarthritis and osteoporosis
what do we include in the assessment?
data related to function ability
health history
assessment of pain and altered sensations
physical assessment
Overall impression of the patient’s health status
health history
determine bone density, texture, erosion and changes in
bone
x-ray studies
performed with or without contrast, shows in
detail a specific plane of involved bone and reveal tumors or soft tissue
injuries
computed tomography
uses magnetic fields, radiowaves, and
computers to show alterations of soft tissue with or without contrast
magnetic resonance imaging
contrast or air is injected, then x-rayed to identify acute or
chronic tears of the joint capsule
arthrography
used to estimate bone density, measures of the hip
and spine are accurate for estimating osteoporosis
bone densitometry
detects primary and metastatic tumors, radioisotope is
injected and scan is performed 2-3 hours later
bone scan
direct visualization of a joint under general anesthesia
arthroscopy
obtains synovial fluid for examination or
relief of pain
arthrocentesis
provides information about the electrical potential of
the muscles and the nerves supplying them
electromyography
performed to determine structure and composition of bone
marrow, bone, muscle or synovium
biopsy