Pathology 12 - MSK Flashcards
THA - what leads to this
OA
RA
development dysplasia
tumor
failed reconstruction
AVA
traumatic
nonunion fx
any hip conditions that produce pain and disability
THA - when is a hemiarthoplasty preformed
when there are only degen changes in the femoral head and not the ACE
THA - population
normally
> 55
experienced consistant pain that has not improved with conservative methods
THA - imaging
c\xray
CT scan
MRI
all can be used to view integrity of the joint
THA - contraindication
active infections
severe obesity
art insuffiency
neuromuscular disease
certain mental illness
capillary refill test used for
arterial insuffiency
THA - how long does it last for
20 years
THA - what pt are hip hemiarthroplasty used for
limited life expectancy
hip fx
THA - AL approach where
interval between the TFL and glute medius
small portion of the hip abd are released
THA - AL precautions
extension
ER
add
THA - direct lateral approach where
leaves post portion of glute med attahced, releases the anterior portion
long division of the TFL and vastus lateralis
posterior tissue and capulse left intact
THA - direct lateral approach precautions
flexion > 90
ext of hip
ER
add
if glute med repaired: avoid activity or resisted hip abd for 6-8 weeks
THA - PL approach where
splits the glute max muscle
short external rot are released
hip abd are retraction anterioly
maintain the glute med and vastus lateralis
THA - PL hip precaution
no hip flexion past 90-deg
IR
add
what is the most common apparach for THA
Posterolateral approach
results in a higher post surgical disloaction
THA - when does cement used in surgery achieve max fixation
15 mins
THA - turing
turn toward uninvolved side
TKA - what are we removing
the proximal and distal joint surfaces of the knee and replacing them with a implant
TKA - unicompartmental
only the medial of lateral joint surface needs to be replaced