Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
Perform Humeral was designed for (2 things) |
optimize primary stability minimize stress shielding |
|
|
PH stem was designed to allow for glenoid lateralization and inferior glenosphere overhang to allow for (3 things) |
ability to tension soft tissue on glenoid and humeral side decreased perimeter impingement humeral head cut at or above the anatomic neck |
|
|
WHAT determines component alignment? |
humeral head cut |
|
|
a humeral head cut should be at or slightly higher than the |
anatomic neck |
|
|
PH stem long stems are necessary for (2 things) |
more surface area and stability |
|
|
For a reverse with PH stems, what options are there for lateralization? (2) |
+6 mm or full wedge baseplate |
|
|
what ranges are there for poly thickness options and if those are not enough what’s next? |
0,3,6 mm poly spacer |
|
|
if transitioning from a 145 reverse system, consider using a _____ _____ poly to limit variables |
ten degree |
|
|
if joint stability is suboptimal, consider (2 options) |
upsizing thickness or retentive poly |
|
|
Blueprint can measure humeral inclination angle to help with neck cut, if humeral resection deviates from ___, axis of the humeral prosthesis may not be in line with the humeral _____ |
135 canal |
|
|
checking for stem alignment: what can happen with reamer (pin) and compactor handle to watch for? |
reamer- guide pin stability dependent on bone quality compactor handle weight may tilt compactor into varus |
|
|
Steps when standard size short compactor doesn’t feel stable: |
consider using largest size to engage bone consider implanting a plus size and not using the plus size compactor if plus size is not solid,consider using morselized bone graft from head at the metaphysis before impacting the component consider trial with a long stem compactor (traditional length?) consider cementing |
|
|
Why should osteophytes be removed? |
to limit perimeter impingement |
