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Table 4 Operative parameters, area of skin numbness (square centimeters), and their recovery time

From: Functional outcome and complication following THA through modified direct anterior approach correlated to cadaveric study: are there any differences in Asian hip?

Parameters Primary THA through modified direct anterior approach(n = 32)
Operative parameters
 Operative time (min) 105.1 ± 37.2 (50.0-200.0)
 Blood loss (ml) 664.1 ± 340.1 (100.0-1450.0)
Skin incision* 11.8 ± 1.2 (9.0-15.0)
Numbness**a
 No 23 (71.9%)
 Yes 9 (28.1%)
Area of skin numbness (cm2)* The group with LFCN injury (n = 9)
6 weeks (n = 9) 234 ± 167.8 (56.3-600.0)
3 months (n = 9) 172.3 ± 127.9 (56.3-450.0)
6 months (n = 5) 140.0 ± 84.0 (25.0-200.0)
1 year (n = 5) 125.0 ± 43.3 (75.0-150.0)
1.5 year (n = 3) 96.0 ± 55.1 (40.0-150.0)
2 years (n = 3) 96.0 ± 55.1 (40.0-150.0)
Recovery of numbness (months)*
Mean ±SD (min-max); median 12.6 ± 9.2 (3.0-24.0); 12.0
Rate of skin numbness**
 6 weeks 9 (28.1%)
 3 months 9 (28.1%)
 6 months 5 (15.6%)
 1 year 3 (9.4%)
 1.5 year 3 (9.4%)
 2 years 3 (9.4%)
  1. All of the 3 patients had approximately 40% remaining skin numbness at 2 years follow-up (FU) compared to 6 weeks FU
  2. aRepresented the prevalence of skin numbness occurred 28.1% (n = 9) from 32 patients that was consistent with our hypothesis