What is a partial knee replacement?
Partial knee replacement (or unicompartmental knee replacement) is a surgical alternative to total knee replacement when osteoarthritis affects only one part of the joint, most often the internal (medial) compartment. Unlike a total knee replacement, which replaces the entire knee, this technique preserves the ligaments, healthy cartilage, and natural anatomy.
Dr. Coulin suggests this option when conditions are right, as it better respects the natural biomechanics of the knee, providing rapid recovery and a joint sensation closer to the original knee.
Who is it suitable for?
Partial prosthesis is intended for patients with:
- Osteoarthritis localized to a single compartment (internal, external or patellofemoral)
- Good ligament stability (intact ACL)
- Maintained mobility
- Good knee alignment, or easily correctable
- Moderate to vigorous activity without excessive overload
It may be suitable for young patients wishing to delay a total prosthesis, as well as for older patients seeking a rapid recovery.
What are the advantages of a partial denture?
Unicompartmental prosthesis offers several significant benefits compared to total prosthesis:
- A less invasive intervention
- Preservation of healthy knee structures
- Faster recovery
- Better joint sensation, with smoother walking
- Less bleeding, pain and risk of complications
It can also facilitate future surgical revision if osteoarthritis progresses to other compartments, as it leaves a large part of the joint intact.
How does the procedure with Dr. Coulin take place ?
Partial denture implantation is a minimally invasive procedure performed under local or general anesthesia, with a small incision and maximum tissue preservation. The procedure lasts approximately one hour. The patient is out of bed within a few hours and usually returns home within 48 hours.
Dr. Coulin uses 3D imaging-assisted guidance or planning techniques to ensure optimal positioning of the implant, adapted to the patient's morphology.
What are the post-operative consequences ?
The after-effects are generally simple and quick. Weight-bearing is allowed immediately, with a gradual return to walking. Rehabilitation begins within the first few days, with a targeted program to restore mobility, strengthen muscles, and promote a rapid return to independence.
Most patients return to an active lifestyle within a few weeks, with a gradual return to sporting activities over 2 to 3 months depending on the patient's profile.
What results can you expect ?
The results of partial dentures are very satisfactory in selected patients. There is a marked reduction in pain, better quality of movement, and a more natural feel than with a total denture. Their lifespan is comparable to that of total dentures in the right indications, with high satisfaction rates.
A tailor-made approach, on a case-by-case basis
The choice between a partial or total denture depends on a comprehensive assessment: symptoms, imaging, and the patient's expectations. Dr. Coulin favors preserving natural structures whenever possible, but only recommends a partial denture when it offers a reliable and durable long-term solution.
Do you suffer from localized osteoarthritis of the knee?
Dr. Coulin will meet you in Geneva to assess your situation, analyze your tests and discuss the surgical options best suited to your case, in complete transparency.
