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Table 4 Correlation of preoperative PDPAA and HVA for cohort C and AC

From: Need for concomitant Akin osteotomy in patients undergoing Chevron osteotomy can be determined preoperatively: a retrospective comparative study of 859 cases

  PDPAA < 8° PDPAA > 8°  
  Mean SD Mean SD p value
HVA preoperative (C) 28.0 6.9 28.7 8.1 0.221
HVA postoperative (C) 9.3 5.4 10.2 5.8 0.038
HVA 6 weeks (C) 12.8 5.4 14.7 7.2 0.001
HVA 12 weeks (C) 13.5 6.4 15.0 7.4 0.006
HVA FU (C) 12.5 6.8 17.0 8.3 0.000
HVA preoperative (AC) 29.5 6.7 27.3 6.7 0.196
HVA postoperative (AC) 6.0 3.8 6.2 4.8 0.818
HVA 6 weeks (AC) 9.7 6.1 7.8 5.6 0.219
HVA 12 weeks (AC) 8.4 5.0 8.9 6.3 0.710
HVA FU (AC) 9.2 6.0 8.5 6.7 0.811
  1. HVA hallux valgus angle, PDPAA proximal to distal phalangeal articular angle, SD standard deviation, FU follow-up, AC Chevron and concomitant Akin, C Chevron