Background
Methods
Patients
Statistical analysis
Pathological examination
Ethics statement
Consent statement
Results
Invasion of periprosthetic tissues by PMNs in 11 of 18 patients
Polymorphonuclear leukocytes | PMN-negative | PMN-positive | p-value |
---|---|---|---|
Presence of polyethylene debris or foreign body giant cell | 7/7 | 0/11 | <0.001 |
Age (years, mean ± SD) | 61.7 ± 13.3 | 67.4 ± 15.6 | =0.779 |
Female (%) | 0.57 | 0.64 | =0.783 |
Body Mass Index (median) | 21.9 | 20.9 | =0.258 |
Diabetes mellitus | 0/7 | 4/11 | =0.137 |
Primary disease (ION:fracture) | 4:3 | 1:10 | =0.052 |
W.B.C. (cells/mL, mean ± SD) | 6031 ± 1793 | 6497 ± 2382 | =0.664 |
Significant differences in BHA survival, CRP level, and Japanese Orthopaedic Association hip score between PMN-positive and PMN-negative groups
Significant differences in BHA survival, CRP level, and JOA hip score between asymptomatic PMN-positive and PMN-negative groups
Polymorphonuclear leukocytes | PMN negative | Asymptomatic PMN-positive | p-value |
---|---|---|---|
Presence of polyethylene debris or foreign body giant cell | 7/7 | 0/4 | =0.003 |
Age (years, median) | 61.0 | 62.0 | =0.850 |
Female (%) | 0.57 | 0.50 | =0.652 |
Body Mass Index (median) | 21.9 | 22.1 | =0.571 |
Diabetes mellitus | 0/7 | 2/4 | =0.109 |
Primary disease (ION:fracture) | 4:3 | 1:3 | =0.359 |
W.B.C. (cells/mL, median) | 6770 | 7175 | =0.450 |