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Table 6 Comparison of surgical techniques, function outcome and complications between patients with long-term unreduced hip joint dislocation, secondary osteoarthritis and pseudoarthrosis and controls

From: Diagnosis, preoperative evaluation, classification and total hip arthroplasty in patients with long-term unreduced hip joint dislocation, secondary osteoarthritis and pseudoarthrosis

Characteristics   Type A Type B Type C
   Patients (n = 6) Controls (n = 100) P Patients (n = 9) Controls (n = 100) P Patients (n = 1) Controls (n = 100) P
Surgical technique
 Approach (n) Anterior 2 15 0.235b 1 7 0.651b 0 0
Posterior 4 85   8 93   1 100  
 Shell diameter (mm)   49.67 ± 2.34 50.44 ± 4.02 0.648a 44.00 ± 5.10 45.46 ± 4.21 0.334a 50.00 53.36 ± 4.88
 Bone graftingc (n) N/A 6 92 0.471b 3 67 0.108b 0 23
Non-Structural 0 8   2 8   0 45  
Structurald 0 0   4 25   1 32  
 Harris Score   91.50 ± 6.89 92.87 ± 4.82 0.794a 89.78 ± 4.82 88.97 ± 6.44 0.578a 82.00 81.24 ± 10.89
 Complication (n) N/A 5 85 0.566b 5 72 0.286b 1 70
DVT 0 11   2 15   0 16  
Heterotopic ossification 1 3   1 3   0 7  
SSI 0 2   1 2   0 5  
Dislocation 0 2   0 8   0 5  
Periprosthetic fracture 0 1   0 7   0 4  
Aseptic loosen 0 0   0 0   0 1  
  1. Note: Because more than one type of complication could be identified in a single patient, the overall count of complications may be more than the number of patients
  2. DVT deep vein thrombosis, SSI surgical site infection
  3. aMann-Whitney U test
  4. bChi-square test
  5. cOnly includes acetabular bone grafting
  6. dIncludes acetabular augmentation