Partial knee replacement could be first choice for some patients with osteoarthritis

Area of Science:

• Orthopedic surgery
• Rheumatology
• Health economics

Background:

• Osteoarthritis is a common degenerative joint disease.
• Medial compartment osteoarthritis affects a significant portion of knee osteoarthritis patients.
• Total knee replacement (TKR) is a common treatment, but partial knee replacement (PKR) is an alternative for specific cases.

Purpose of the Study:

• To compare the clinical and cost-effectiveness of total knee replacement (TKR) versus partial knee replacement (PKR).
• To evaluate outcomes at 5 years in patients with medial compartment osteoarthritis.

Main Methods:

• A randomized controlled trial (TOPKAT study) was conducted.
• Patients with medial compartment osteoarthritis were randomized to receive either TKR or PKR.
• Clinical outcomes and cost-effectiveness were assessed over a 5-year period.

Main Results:

• Partial knee replacement (PKR) demonstrated comparable clinical effectiveness to total knee replacement (TKR) at 5 years.
• PKR was found to be cost-effective, potentially offering advantages in certain patient groups.
• No significant differences in patient-reported outcomes or complications were observed between the two surgical approaches.

Conclusions:

• Partial knee replacement (PKR) can be considered a first-choice surgical option for selected patients with medial compartment osteoarthritis.
• The findings support shared decision-making regarding TKR versus PKR based on individual patient factors.
• Further research may explore long-term outcomes and patient-specific predictors of success for PKR.