The Twin Peg Oxford partial knee replacement: the first 100 cases

Area of Science:

• Orthopedic surgery
• Biomedical engineering
• Knee biomechanics

Background:

• Partial knee replacement offers a less invasive alternative to total knee arthroplasty.
• Femoral loosening and limited deep flexion contact are potential concerns with existing partial knee implants.

Purpose of the Study:

• To evaluate the clinical and radiological outcomes of the Twin Peg Oxford partial knee replacement.
• To assess the implant's efficacy in deep flexion and fixation security.

Main Methods:

• Clinical results of 100 patients undergoing medial unicompartmental arthroplasty with the Twin Peg Oxford implant were analyzed.
• Outcome measures included the Oxford Knee Score, American Knee Society Scores, range of motion, and patient satisfaction.
• Radiological assessment for loosening and loosening indicators was performed at 2 years post-surgery.

Main Results:

• Mean Oxford Knee Score of 41, American Knee Society Objective Score of 93, and Functional Score of 84 were reported.
• Mean range of motion reached 130°, with high patient satisfaction.
• No deaths, infections, dislocations, fractures, revisions, or pathological radiolucencies indicating loosening were observed.

Conclusions:

• The Twin Peg Oxford partial knee replacement demonstrates excellent 2-year clinical and radiological results.
• The implant provides secure fixation and improved femoral contact in deep flexion.
• It represents a promising alternative for surgeons seeking to mitigate risks associated with single-peg designs.