Musculoskeletal Disease Flashcards
53 y/o postal worker presents with lower back pain. on exam he has decreased pinprick on the left lateral thigh and web of his left big toe. this indicates discogenic disease in the dermatomal pattern of which area?
L4/L5 (L5 root involvement)
C5 myotome innervates _
shoulder abduction
when wrist and finger extension causes pain over the extensor carpi radialis brevis tendon, when lifting with wrist extended and elbow extended, you would expect _
tennis elbow
to aid in diagnosis of meniscus damage, which test would you perform?
McMurray test
sprain
injury to ligaments that attach to bones in a joint
tx of osteoarthritis
acetaminophen, NSAIDS
exercise!
glucosamine and chondroitin for moderate to severe OA
corticosteroid injections for short term relief (4-8 weeks)
hyaluronic injections - longer relief but more $$
total joint replacement
cortical bone
dense, concentric layers around a vascular supply
found in diaphysis of long bones
80% of human skeleton
cancellous or trabecular bone
found at end of cortical bone
spongy, porous
found in vertebrae, ribs, plvis and ends of long bones covered by Periosteum
articular structures include
joint capsule and articular cartilage, synovium and synovial fluid, intra-articular ligmanets and juxta-articular bone
extra-articular structures include _
periarticular ligaments, tendons, bursae, muscle, fascia, bone, nerve, and overlying skin
ligaments
ropelike bundles of collagen fibrils that connect bone to bone
tendons
collage fibers connecting muscle to bone
cartilage
collagen matrix overlying bony surfaces
bursae
pouches of synovial fluid that cushion the movement of tendons and muscles over bone or other joint structures
synovial joint
freely moveable, bones are covered by articular cartilage bones are separated by synovial cavity synovial membrane secretes synovial fluid that lubricates joint movment IE ::: shoulder & knee
cartilaginous joint
joint is slightly moveable
bones separated by fibrocartilaginous discs
discs contain nucleus pulposus that cushions bony movement
ie: vertebral bodies of the spine
fibrous joint
no appreciable mvmt
bones separated by fibrous tissue or cartilage
ie: sutures of skull
SYNOVIAL JOINTS
spheroidal (ball & socket)
hinge
condylar
spheroidal joints (ball and socket)
wide ranging
flexion, extension, abduction, adduction, rotation, circumduction
hip && shoulder
hinge joint
motion in one plane
extension & flexion
interphalangeal joints of hand and foot, ELBOW
condylar joint
movement of 2 articulating surfaces, not dissociable
knee, TMJ
sprain
tearing ligaments that bid the joint as joint is forced beyond it’s normal ROM
strain
overstretching or overusing muscles, tear in tendons
dislocation
bone is displaced t the joint, causing articlating surfaces of bone to detach
subluxation
partial dislocation
grade i sprain
microscopic tear of ligament due to overstretching
grade ii sprain
incomplete tear with some functional impairment
grade iii sprain
full or complete loss of integrity
avulsion
ligament pulls away from bone, bringing bone fractures with it
fracture
may occur due to neoplasm, trauma, or incresed stress on bone
closed fracture
don’t underestimate the associated soft tissue injury
open fracture considerations
soft tissue damage blood supply infection emboli age/nutrition/anemia
dermatome C5
area over shoulder
dermatome C6
thumb and part of forearm
dermatome C7
middle finger
dermatome C8
smallest fingers and part of forearm
dermatome L4
thigh
dermatome L5
medial part of calf and foot, big toe
dermatome S1
lateral part of calf and foot, smaller toes
myotome C5
deltoid muscle
abduction of arm at shoulder
myotome C6
biceps
flexion of arm at elbow
myotome C7
triceps
extension of arm at elbow
myotome C8
small muscles of the hand
myotome L4
quadriceps (extension of leg at the knee)
myotome L5
tibialis anterior
upward flexion of the foot at the ankle
myotome S1
gastrocnemius muscle
downward flexion of foot at the ankle
reflex C5
flexion at elbow, biceps
reflex C6
flexion at elbow, brachioradialis
reflex C7
extension at the elbow, triceps
reflex C8
finger flexion
reflex L4
knee reflex, quadriceps
reflex L5
no reflex
reflex S1
ankle reflex, gastrocnemius
bursitis
bursae = fluid filled sacs thru/o body that decrease friction over bony prominences
bursitis caused by trauma or overuse
subjective questions re: joints
pain
stiffness
swelling, heat, redness
subj questions re: muscles
cramps
weakness
subj questions re: bones
pain
deformity
trauma (fractures, sprains, dislocations
assessing joint pain
ask patient to point to the pain
clarify “mechanism of injury” esp if it was trauma
local v diffuse
acute v chronic
traumatic v atraumatic
inflamm v noninflamm
MS exam (inspection)
Inspection SEADS
- Swelling
- Erythema
- Atrophy
- Deformity
- Scars (surgical)
symmetry, color, skin changes
MS Exam principles
Palpation - tenderness /fluid
Range of Motion
Ausculation ( crepitus? injury-popping)
Neurovascular status
joint examination
inspect/palpate for skin changes, nodules, muscle atrophy
asssess any degen or inflamm changes ie: swelling warmth, tenderness, redness
perform range of motion , use joint-specific maneuvers
signs of inflammation /arthritis
Swelling
{- synovial membrane boggy or doughy
-effusion from excess syovial fluid
-soft tissue such as bursa tendons, tendon sheaths}
Warmth Tenderness Redness Loss of Function Deformity
muscle strength
apply opposing force
grade 5 = normal
grade 3 - full ROM with gravity but not against resistance
bone imaging
radiograph
CT scans
nuclear bone scan
PET
muscle imaging
EMG
biopsy
joint imaging
u/s radiograph MRI examination of synovial fluid arthroscopy
labs for systemic disease
ESR -inflammation CRP -inflammation ANA -automimmune / *SLE anti-nuclear antibody RF -rheumatoid factor anti-cyclic citrullinated peptide CCP -also for RA
vectra DA
12 biomarkers , single score to assess RA disease activity
joint pain w/ butterfly rash
lupus