PCO - Management of a painful and stiff medial uka: revision to tka

Which of the following can explain anterior pain and extension deficit after a medial UKA?
Progression of patellofemoral arthritis
Component malposition, overhang or overstuffing
Low grade periprosthetic joint infection
Extension deficit with AMI, overloading the patellofemoral joint
What other exams would you do?
CRP and ESR
Knee aspiration with cultures
CT scan (component position, rotation, overhang, loosening)
SPECT-CT
How would you classify this extension deficit (Sonnery-Cottet AMI classification)?
Grade 1a
Grade 1b
Grade 2b
Grade 3
How would you manage this condition?
Intensive physiotherapy alone
Arthroscopic posterior arthrolysis with UKA retention
Isolated polyethylene exchange
Revision to TKA, followed by intensive rehabilitation
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