Skip to main content

Table 1 Patient demographics of both the convertible stem group as well as the non-convertible stem group (SD: Standard deviation; ASA: American Society of Anesthesiologists classification)

From: Stem retention and survival in revision of anatomical convertible shoulder arthroplasty to reverse arthroplasty: a Dutch registry study

  Convertible stems (n = 1.067) Non-convertible stems (n = 1.430) P-value
Age (years), Mean (SD) 66.4 (10.5) 66.9 (10.7) 0.33
BMI (kg/m2), Mean, SD 28.7 (5.5) 28.6 (5.7) 0.79
Sex, Male () 26.9 28.5 0.37
Smoker, Yes (%) 17.1 14.5 0.08
ASA (%)    0.05
 I 11.9 14.5  
 II 67.6 63.1  
 III-IV 20.5 22.4  
Walch classification (%)    0.61
 A1/A2 80.7 79.6  
 B1 13.7 13.9  
 B2/B3 5.5 6.5  
Percentage/year (%)    < 0.001
 2014 28.6 71.4  
 2015 45.1 54.9  
 2016 53.7 46.3  
Side (%)    0.79
 Left 47.1 47.7  
 Right 52.9 52.3  
Diagnosis (%)
 Osteoarthritis 67.5 77.3 < 0.001
 Fracture 25.8 20.2  
 Other 6.8 2.4  
Approach (%)    < 0.001
 Deltopectoral 88.2 93.6  
 Anterosuperior 11.8 6.4  
Prosthesis type (%)    0.36
 Hemi 37.6 39.4  
 Total 62.4 60.6  
Fixation (%)    < 0.001
 Cemented 20.0 37.9  
 Uncemented 80.0 62.1  
Previous surgery, No (%) 86.8 88.0 0.37