The P.F.C (Press-Fit Condylar ) knee was designed in 1982 and first implanted clinically in 1984. It was intended to provide a condylar knee system for posterior cruciate retention and fixed without use of cement.
We analyzed 104 knees, which could be followed up, underwent the P.F.C total knee arthroplasty in the period from Jan. 1988 to June. 1991. The follow-up duration ranged from one year to four years and five months averaging two years and 10
months.
The radiologic measurement was evaluated by Radiolgic Measurement of American Knee Society in the A.P, lateral and Merchant´s view. The Knee Pating Scoring System of Hospital for Special Surgery was used for preoperative and ostoperative
functional
assessments. Causes of disease were Osteoarthritis in 70 knees, rheumatoid arthritis in 31 knees and others in 3 knees. @ES The results analyzed are as follows;
@EN 1. The average range of motion ws increased from 108.6 degrees preoperatively to 121.7 degrees postoperatively.
2. The average Knee Rating core of Hospital for Special Surgery was improved from 50.4 preoperatively to 86 postoperatively.
3. The average flexion contracture was decreased from 24.7 degrees in 62 knees preoperatively to 7.5 degrees in 24 knees postoperatively.
4. The average bitiofemoral angle was corrected from valgus 3.9 degrees to valgus 6.4 degrees.
5. The average congruence angle was - 2.8 degrees in 27 knees of osteoarthritis postoperatively.
6. The average thickness of patella were 20.6 mm preoperatively, and 21.4 mm postoperatively.
7. The average height of patella by Insall were 1:1.01 preoperatively, and 1:1.11 postoperatively.
8. The cement was used in all components of 25 knees, not in 31 knees.
9. The bone graft for tibial bone defect was used in 18 knees.
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