Foot and Ankle Fractures Flashcards
the sustentaculum tali is a portion of what bone?
calcaneus
what is the only bone in the body without a musculotendinous attachment?
talus
describe the relative motion of the subtalar joint during heel strike and toe off
heel strike - everts
toe off - inverts
what type of XR imaging would you consider for acute injury and tenderness of the navicular or fifth MT?
foot XR
what type of XR would you consider if there is pain along the posterior aspect of lateral or medial malleolus?
ankle xR
widening of the medial clear space indicates incompetency of what ligament?
deltoid
you diagnose ankle fracture that is stable. for how long would you consider casting initially?
4-6 weeks
t/f medial malleolus stress fractures are inherently unstable and prone to nonunion
true
for a Salter Harris I or II fracture of the ankle, how long do you typically cast?
2-3 weeks
what should you do for a Salter Harris III-V fracture of the ankle?
refer to ortho to consider surgery
what ddx should you consider for posterior process talar fracture?
os trigonum
what is the initial treatment and treatment length for posterior talus and anterior calcaneus fracture?
short leg non weightbearing cast x 6 weeks
you can try conservative treatment for a calcaneal acute fracture if less than what percentage of the calcaneo-cuboid joint is involved?
<25%
if you choose conservative treatment for acute calcaneal fracture, what is the initial management and length of management?
6 weeks non weightbearing cast
what is the average return to play time for calcaneal stress fracture with conservative management?
3-4 weeks
what is the next step in management for a displaced navicular tuberosity avulsion?
refer for ortho surgery
what is the MOI of a navicular tuberosity avulsion fracture?
eversion of the ankle
what is the initial conservative treatment for navicular stress fracture?
non weightbearing cast x 6-8 weeks
what ligament is the keystone for the transverse arch of the foot?
Lis Franc ligament
what is the fleck sign of the midfoot?
avulsion of the lis franc ligament from the 2nd MT base
for a zone 1 avulsion injury of the peroneus brevis from the 5th MT base, you can treat with conservative management if less than how many mm displaced?
<3mm displaced
for a zone 3, shaft fracture of the 5th MT, if choosing conservative management, when should you refer to ortho if nonunion occurs?
6 months
if you choose conservative management for a zone 2 Jones fracture, what is the total recovery time?
12 weeks: 6 weeks non weightbearing followed by 6 weeks protected weight bearing
t/f XR will usually be negative initially for navicular stress fracture
true
fracture of the first metatarsal and calcaneus have what unique complication compared to other foot fractures?
compartment syndrome
dancers have unique predisposition to fracture of what portion of what metatarsal?
proximal 2nd MT
