Thigh/Hip Flashcards
Primary blood supply of the femoral head
Medial femoral circumflex artery
Anatomic axis of Femur
Line drawn along axis of femur
Mechanical axis of femur
line drawn between center of femoral head and intercondylar notch
Knee axis
line drawn along the inferior aspect of both femoral condyles
Vertical axis
Vertical line, perpendicular to ground
Lateral femoral angle
angle formed between the knee axis and the femoral axis
Complication of hip dislocation
femoral head AVN
Direction of hip dislocation most common?
Posterior
Physical exam of ant vs post hip locations
Ant: ABducted, flexed, ER Post: ADducted, flexed, IR
XR findings in hip dx
Fermoral heads appear different sizes
Posterior hip dx classification
Thompson classification
I: No or minor post wall fx
II: Large posterior wall fx
III: Comminuted acetabular fx
IV: Acetabular floor fx
V: Femoral head fx
Anterior hip dx classification
Epstein classification
I(ABC): superior
II(ABC): Inferior
A: No associated fx
B: Femoral head fx
C) acetabular fx
Physical exam femoral neck fx
elderly most common, LE shortened abducted, ER
Femoral neck fx classification
Garden classification
I: Incomplete fx; valgus impaction
II: Complete fx; nondisplaced
III: Complete fx; partial displacement, (varus)
IV: Complete fx, total displacement
Classification for intertrochanteric fractures?
Evans/Jensen classification
Type 1A: nondisplaced
Type 1B: 2 part displaced
Type 2A: 3 part, GT fragment
Type 2B: 3 part, LT fragment
Type 3: 4 part
Mortality of intertrochanteric fx
20% at 6 months
Classification for Femoral shaft fx?
Winquis/Hansen classification
0: no comminution
I: Minimal comminution
II: Comminuted >50% cortices intact, unstable
III: Comminuted
Subtrochanteric fx
Russell-Taylor classification
Type 1: No piriformis fossa extension/involvement A: Intact LT B: detached LT
Type 2: Fracture involves the piriformis fossa A: Intact LT B: detached LT
Distal femur fracture
AO/Muller classification
A: extraarticular subtypes 1,2,3
B: unicondylar subtypes 1,2,3
C: bicondylar subtypes 1,2,3
Thigh impingement test
Supine: flex, adduct, IR hip. Pain may be indicative of FAI
Patrick/FABER
Flex, Abduct, ER, SI joint pathology
Log roll test
Supine, hip extended: IR/ER. Pain c/w hip arthritis
Stinchfield
Resisted straight leg raise, pain = hip pathology
Thomas sign
Supine; one knee to chest. If opposite thigh elevates off table, flexion contracture