Robotic-Assisted Partial (Unicompartmental) Knee Replacement
Overview
Partial knee replacement treats arthritis limited to one compartment of the knee, most commonly the inner side. Unlike total knee replacement, only the worn compartment is resurfaced while the healthier parts of the knee are preserved.
A/Prof Ernstbrunner performs partial knee replacement with robotic assistance. Robotic planning and guidance help position the implant accurately within the patient’s own knee anatomy, which is particularly important when preserving the remaining healthy joint surfaces and maintaining a natural-feeling knee.
Who may benefit from partial knee replacement?
Patients may benefit when arthritis is isolated to one compartment, the ligaments are functioning, deformity is correctable and the rest of the joint is well preserved. It is not suitable for all arthritis patterns.
What does the procedure involve?
The damaged compartment is prepared and resurfaced with metal and polyethylene components. Robotic assistance supports accurate bone preparation and implant positioning according to the preoperative plan.
Because only one compartment is replaced, the rest of the knee is preserved. The robotic system helps match the implant position and balance to the patient’s anatomy, with the aim of supporting a more natural knee feel and reliable function in suitable patients.
Recovery after partial knee replacement
Recovery is often quicker than total knee replacement, although swelling, strengthening and confidence still take time. Walking begins early and activity is progressed gradually.
Rehabilitation protocol
You will receive a partial knee replacement protocol covering mobility, range of motion, strengthening and return to activity.
FAQs
What is the difference between partial and total knee replacement?
Partial replacement resurfaces only the worn compartment, while total knee replacement resurfaces the whole knee.
Who is suitable for partial knee replacement?
Patients with isolated compartment arthritis, good ligament function and preserved remaining joint surfaces.
Why use robotic assistance?
Robotic assistance helps plan and execute accurate implant positioning for the individual knee. In partial knee replacement, precision is especially important because the implant must work with the preserved ligaments and the remaining healthy compartments of the knee.
Is recovery faster than total knee replacement?
Often yes, but recovery still requires rehabilitation and time.
Can a partial knee replacement be revised later?
Yes, if arthritis progresses or the implant fails, revision to total knee replacement is possible.
Book or Refer Today
For isolated compartment knee arthritis, book a consultation to discuss robotic-assisted partial knee replacement and whether a precise, tissue-preserving approach is suitable for you.
Reconstructive Orthopaedics Melbourne (ROM)
We restore mobility, reduce pain, and improve quality of life — through reconstructive orthopaedic surgery driven by evidence and advanced biomechanics.