"Pre-operatively, this view assesses patellar tilt, displacement and subluxation."
"Post-operatively, this view can be used to ensure the operative plan was carried out and re-assess the parameters above."
"Pre-operatively, this view assesses patellar height."
"The pre- and post-operative views can be compared to look for overstuffing of the post-operative patella."
"Pre-operatively, a CT scan or an MRI may be used to help assess the patient’s Q-angle and their lower limb rotational profile. This may include assessing the tibial tubercle-trochlear groove (TT-TG) distance, rotational malalignment and patient bone stock 3."
"Pre-operatively, an MRI can assess for trochlear dysplasia and the quality of intra-articular ligamentous and fibrocartilage structures."
"Post-operatively, an MRI may be used to assess for a cause for post operative pain such as early tibiofemoral arthritis. The amount of information achievable may be limited due to metal artifact."
"The first PFA was proposed in 1955 by McKeever to avoid patellectomy in patients with isolated patellofemoral arthritis 3. There have been mainly two generations designs since the the first PFA. The latest designs aim to improve the patella tracking and reduce the revision rates."
"BMI"
"Compared to TKA, patellofemoral arthroplasties have 4:"
"higher BMI"
"AP projection"
"Plain Radiograph"
"AP projection"
Expected headings
"History"
"Comparison"
"Prosthesis design"
"Radiographic features"
"Plain Radiograph"
"AP projection"
"Skyline projection (horizon)"
"Lateral projection"
"CT/MRI"
"CT"
"MRI"
"Nuclear medicine"
"patella: constraint can be increased by having a more conforming patella button to the implanted trochlea; the trade-off is that it is less forgiving and more prone to malpositioning 6"
"Pre-operatively, this view assesses patellar tilt, displacement and subluxation."