Musculoskeletal Diseases Flashcards
Disease occurs when there is a disruption
of the normal physiologic function of a tissue or organ
Disruption of the musculoskeletal system may be the result of
Trauma, Degenerative disease, Inflammation, poor conformation, neoplasia
Etiology of long bone fractures
trauma, disease, repeated stress
Open fracture vs closed
open is through the skin
the classification of the fracture helps to determine
the best method of repair
oblique fracture
break occurs diagonally across the bone
Comminuted fracture
bone is broken, splintered, or crushed into pieces
Spiral fracture
break travels around the bone
compound fracture
the bone sticks through the skin
How many x-ray views are necessary to identify the type of fracture
at least 2
long bone fracture tx
reduction & fixation: splints, casts, intramedullary pins, bone plates, external skeletal fixation
How do bones heal
fracture hematoma, fibrocartilagnoius (soft) callus, bony (hard) callus, remodeling
a fractured bone will not heal without
stabilization/immobilization
What is ideal tx for simple fractures with closely apposed fracture segments
splint/cast
Intramedullary pins (IM pins) provide
good fracture site rigidity
What tx is ideal to prevent the forces of bending and rotation
IM pins
bone plates provide
excellent stabilization of most fractures
IM pins are not recommended for
distal forelimb fractures
External fixators are used primarily for
complex fractures or ones in which external wounds are present
an external skeletal fixator is a device consisting of
multiple pins and external rings or bars which hold a fractured bone in place during the healing process
Client education for fractures
restrict activity, leash walks only 6-8 weeks, surgical site care, follow up rads, additional sx or splint changes
What is the cruciate ligament
are ligaments which stabilize the knee located in x pattern and connect the femur to the tibia
2 cruciate ligaments
cranial and caudal
most common injury to stifle of a dog
injury of the cranial cruciate
injury of the cruciate causes
secondary degenerative joint disease (DJD)
CCL injury is seen frequently in
obese, middle-aged, inactive animals that suddenly hyperextend the stifle
dx of cruciate ligament injury
clinical signs, cranial drawer test (tibia slides forward over femoral condyles), tibial expression test, +/- joint effusion, rads
Client education for cruciate injury
rupture of contralateral ligament, sx is only way to repair and prevent DJD, activity restricted for 6-8 weeks, weight loss, anti-inflammatories,
what is a patellar luxation
the kneecap luxes or pops out of place either medial or lateral position
medial luxation common breeds
toy, mini, large
lateral luxation breeds
toy and mini, large and giant
One of the most common orthopedic conditions in dogs, dx in 7% of puppies
patellar luxation
Grading system for patellar luxation
Grade 1-5
patellar laxations that do not cause any symptoms should be monitored but do not typically
warrant surgical correction especially in small dogs
surgery for patellar luxation is most often considered with grades _ and over
2
Patellar luxation client education
sx may be warranted, post op care of sx site, activity restriction, anti-inflammatories , DJD likely
Genetic/hereditary condition most often seen in large breed dogs. Rapid weight grain and growth through excessive nutritional intake. Disease of the “ball and socket” may result due to abnormally shaped acetabulum and/or femoral head
hip dysplasia
Extra-articular stabilization
suture material placed around the casual fabellae and through a tunnel in the tibial crest to stabilize the joint