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Table 4 Causes of the first reoperation or readmission after hemiarthroplasty for intertrochanteric hip fracture

From: Primary hemiarthroplasty after unstable trochanteric fracture in elderly patients: mortality, readmission and reoperation

  1-month 3-month 6-month 1-year 2-year 5-year 10-year
Reoperation
 Na 127 199 228 250 283 330 356
 Dislocation (%b) 36.22 41.71 40.97 40.00 36.04 31.82 30.34
 Mechanical complicationsc (%) 35.43 36.18 37.72 39.20 40.99 41.21 40.43
 Infection (%) 34.65 35.18 39.04 39.60 36.58 41.21 40.73
 Removal of implant (%) 14.17 13.07 14.91 16.00 18.37 20.30 20.79
 Conversion to / revision arthroplasty (%) 4.72 6.03 6.14 7.60 10.60 11.82 11.80
 Isilateral femur fracture (%) 14.17 15.08 14.47 14.80 17.67 19.09 20.51
Readmission
 N 459 628 759     
 Urinary tract infection (%) 55.34 58.28 60.87     
 Pneumonia (%) 28.54 33.28 37.42     
 Acute respiratory failure (%) 17.86 22.29 25.30     
 Stroke (%) 10.46 11.15 10.67     
 Acute renal failure (%) 8.50 11.31 10.94     
 Acute myocardial infarction (%) 4.14 4.62 4.48     
 Pulmonary embolism (%) 1.96 1.59 1.71     
 Deep vein thrombosis (%) 0.87 1.43 1.45     
  1. Note: a N = the number of subjects who had at least one reoperation or readmission
  2. b % = percentage of subjects who had a certain cause of complication among the total number of subjects who had at least one complication. Subjects might have had more than one reoperation or readmission due to multiple causes
  3. c Mechanical complications include loss of reduction, cortex penetration by stem, skin irritation and implant broken/failure