The clinical and roentgenographic short-term results regarding femoral componentof 62 non cemented total hip arthroplasties were evaluated. In 33 cases PORO-PALCARmodel were implanted and in 29 cases PCA model were implanted. The average age of patientswas 62 years (sd = 9,6). The average follow-up was 2 years, ranging from 1,5 to 3 years.Clinical assesment was performed using the Harris' score. The total end score reached 88,7points (sd = 6,9) for the PCA model and 83,5 points (sd = 13,2) for the PORO-PALCAR model.Excellent clinical results (80 to 100 points) were found in 9 3% of the patients with PCA modeland in 67% of those with the PORO-PALCAR model (p<0,01). Pain was removed in morethan 90% of the cases independently of the femoral model implanted. As for radiologic results,PORO-PALCAR model presented an average vertical subsidence of 1,73 mm (p<0,05). Radiolucentlines were not detected in 80% of PCA models and in 48% of PORO-PALCAR modelsaround porous-surfaced (p < 0,01). In more of 75% of PORO-PALCAR models were observedradiolucent lines untill 2 mm of density in lower zones, and in 2 1% of cases radiolucent lineswas greater than 2 mm around of stem apex. Two cases of PORO-PALCAR stem presentedsings of aseptic loosening. Fixation and osteointegration seems to be better for the femoralcomponent of PCA model than for the PORO-PALCAR stem.

The clinical and roentgenographic short-term results regarding femoral componentof 62 non cemented total hip arthroplasties were evaluated. In 33 cases PORO-PALCARmodel were implanted and in 29 cases PCA model were implanted. The average age of patientswas 62 years (sd = 9,6). The average follow-up was 2 years, ranging from 1,5 to 3 years.Clinical assesment was performed using the Harris' score. The total end score reached 88,7points (sd = 6,9) for the PCA model and 83,5 points (sd = 13,2) for the PORO-PALCAR model.Excellent clinical results (80 to 100 points) were found in 9 3% of the patients with PCA modeland in 67% of those with the PORO-PALCAR model (p<0,01). Pain was removed in morethan 90% of the cases independently of the femoral model implanted. As for radiologic results,PORO-PALCAR model presented an average vertical subsidence of 1,73 mm (p<0,05). Radiolucentlines were not detected in 80% of PCA models and in 48% of PORO-PALCAR modelsaround porous-surfaced (p < 0,01). In more of 75% of PORO-PALCAR models were observedradiolucent lines untill 2 mm of density in lower zones, and in 2 1% of cases radiolucent lineswas greater than 2 mm around of stem apex. Two cases of PORO-PALCAR stem presentedsings of aseptic loosening. Fixation and osteointegration seems to be better for the femoralcomponent of PCA model than for the PORO-PALCAR stem.