Knee
Revision Arthroplasty
Management of a painful and stiff medial uka: revision to tka
The goal of this clinical case is to discuss the diagnostic work-up of a painful and stiff medial unicompartmental knee arthroplasty (UKA), the role of arthrogenic muscle inhibition (AMI) in a persistent extension deficit, and the indications for revision to total knee arthroplasty (TKA).
Part one
Clinical presentation
- 66 y.o. man
- Right medial UKA performed 3 years ago (abroad)
- Persistent anterior knee pain since surgery
- Extension deficit and stiffness, main complaint
PHYSICAL EXAMINATION:
- 1m85, 80kg (BMI 23.4)
- Extension deficit of 5° to 10°
- Knee stable in all planes
- VMO activation deficit
- Anterior knee pain
Pre-operative right knee X-rays
Pre-operative right knee X-rays: skyline view