Quiz 5: 1 Flashcards
What can exacerbate MPFL deficiency in a pt with an unstable patella?
Patella alta
What is another name for patella alta?
Grasshopper eyes
What is the term used for a low riding patella?
Patella baja
What is another name for patella baja?
Patella infera
Draw both patella alta and baja
You know this already
What structures are being tested during the PF glide testing?
Superior retinaculum
Positive finding of PF glide testing
More than 2 quadrants
What structures are you testing with the PF tilt?
Deep retinaculum
Positive finding for PF tilt testing
More than 15˚
What are the 3 common imaging view that capture the patella in the trochlea
- Sunrise view
- Merchant’s view
- Hughston view
What provides the bony buttress for the patella?
Lateral trochlea being higher than medial trochlea
Where is the thickest articular cartilage in the human body?
Articular cartilage on underside of the patella
Draw and name the most common radiographic way to look at the position of the patella in the trochla/way to measure the trochlear groove
TTTG view draw me
What is the Insall-Salvati ratio?
B/A = 1
What do the components of the formula stand for?
A = length of patellar tendon B = height of patella
Draw the Insall-Salvati ratio
Draw this shit
What is the ratio for patella alta?
Less than 1
What is the ratio for patella baja?
Greater than 1
What is the fx of on the superior-lateral aspect of the patella called?
Bipartite patella
What is the Q angle?
Angle between:
- ASIS
- midpoint of patella
- tibial tuberosity
How does an increased Q angle affect the patella
Increases valgus forces on the knee (?)
Pts with patella alta tend to have problems with (hypo/hyper)mobility
Hypermobility
Which causes osteochondral changes early on? Patella alta or patella baja?
Patella baja
