Artificial dermis combined with skin grafting for the treatment of hand skin and soft tissue defects and exposure of bone and tendon

Table 1 General information on the study patients

Variable	Observation group	Control group
Sex (male/female)	42/7	14/3
Age, yr (mean ± SD)	45.18 ± 14.04	45.94 ± 13.06
BMI	26.72 ± 6.35	27.08 ± 5.07
Wound area, cm2 (mean ± SD)	3.6 ± 0.47	3.7 ± 0.43
Exposed area, cm2 (mean ± SD)	3.0 ± 0.32	3.1 ± 0.35
Leakage type (Tendon/bone)	5/45	1/17

BMI: Body mass index.

Table 2 Postoperative wound conditions, n (%)

Variable	Observation group	Control group
Interval between two surgeries (d)	20.0 ± 4.3	27.5 ± 9.3
Hospital stay (d)	21.0 ± 10.1	28.4 ± 17.7
Wound healing time (d)	27.92 ± 3.25	19.68 ± 6.91
Skin graft/flap survival rate	95.1 ± 5.0	96.3 ± 5.6
Postoperative infection	5 (10.2)	4 (23.5)
Subcutaneous hematoma	3 (6.1)	2 (11.8)
Recovery of skin sensation
Optimal	25 (51.0)	5 (29.4)
Good	20 (40.8)	8 (47.1)
Poor	4 (8.2)	4 (23.5)
Two point resolution
≥ 7 mm	18 (36.7)	10 (58.5)
4-6 mm	31 (63.3)	7 (41.2)
VSS score	2.91 ± 1.36	5.96 ± 1.51
Satisfaction	90.1 ± 6.3	76.3 ± 5.2

VSS: Vancouver Scar Scale.