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The Liverpool Mark II knee prosthesis. A preliminary report
The Journal of Bone and Joint Surgery. British Volume
|August 1, 1978
Summary
The Liverpool Mark II knee joint system demonstrated excellent early outcomes in knee replacement surgery. Most patients experienced pain relief and restored function, indicating a promising new treatment option.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Knee joint replacements aim to restore function and alleviate pain in patients with severe knee damage.
- Existing prostheses and surgical techniques present challenges in achieving optimal articulation and accurate implant placement.
Purpose of the Study:
- To report preliminary results of knee joint replacements using the Liverpool Mark II knee joint system.
- To evaluate the efficacy and safety of this novel bicondylar prosthesis and its associated stereotactic instruments.
Main Methods:
- Implantation of the Liverpool Mark II bicondylar prosthesis in sixty-two knees across forty-two patients.
- Utilized stereotactic instruments for accurate prosthesis insertion via meniscectomy-type incisions.
- Focused on achieving near-normal articulation and operational simplicity.
Main Results:
- Fifty-six knees were rendered painless, with four others reporting only slight pain post-operation.
- Full knee extension was achieved in fifty-eight knees.
- No valgus or varus deformity was observed, and all knees exhibited absence of collateral laxity, with two failures reported.
Conclusions:
- The Liverpool Mark II knee joint system shows highly encouraging early results for knee replacement.
- The prosthesis offers near-normal articulation and a simplified surgical procedure.
- These preliminary findings suggest the system is a viable and effective option for knee arthroplasty.