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Table 1 Patient demographics

From: Evaluation of the ‘Spaarne soft tissue procedure’ as a treatment for recurrent patellar dislocations: a four-in-one technique

  Overall Operated before 2010 Operated after 2010 P-value
Patients (knees) 27 (34) 14 (17) 14 (17) 1.00
Age at operation, mean ± SD 23.7 ± 11.3 20.1 ± 8.5 27.3 ± 12.7 0.24
Follow-up in years, mean ± SD 10.4 ± 4.8 14.1 ± 3.5 6.6 ± 2.5 0.02
Male, No of patients (%) 3 (11%) 1 (6%) 2 (14%)  
Female, No of patients (%) 24 (89%) 13 (93%) 12 (86%) 1.00
BMI, mean ± SD 24.9 ± 4.6 26.8 ± 5.4 23.6 ± 3.6 0.40
Bilateral cases, n (%) 7 (21%) 4 (24%) 3 (18%) 0.65
Left knee, n (%) 16 (47%) 9 (53%) 7 (41%)  
Right knee, n (%) 18 (53%) 8 (47%) 10 (59%) 0.73
  1. n Number of knees, SD Standard deviation