DBM+PRP group (n = 16) | Autograft group (n=27) | Statistics | P Value | |
---|---|---|---|---|
Sex (male/female), n | 7/9 | 15/12 | χ2 = 0.560 | 0.454a |
Age, (years) median, range | 39.5,28-61 | 32, 27-67 | Z=-0.972 | 0.331b |
Affected side | χ2 = 0.078 | 0.78a | ||
Right | 9 | 14 | ||
Left | 7 | 13 | ||
Causes of injury | 3.918 | 0.412c | ||
Traffic accident | 6 | 14 | ||
Fall | 4 | 9 | ||
Trip | 3 | 3 | ||
Sport injury | 2 | 1 | ||
Machinery accident | 1 | |||
Previous Open fracture | 5 | 9 | χ2 = 0.020 | 0.888a |
Number of previous surgeries | 3.764 | 0.226c | ||
1 | 10 | 19 | ||
2 | 5 | 5 | ||
3 | 3 | |||
4 | 1 | |||
Location of nonunion site | 2.492 | 0.727c | ||
Clavicular | 2 | 2 | ||
Humeral | 2 | 5 | ||
Radial | 1 | |||
Femoral | 4 | 9 | ||
Tibial | 7 | 11 | ||
Types of non-union (Oligotrophic/ Atrophic) | 13/3 | 20/7 | χ2 = 0.027 | 0.869d |
Hardware of the last surgery | 3.859 | 0.139c | ||
Intramedullary nail | 2 | 7 | ||
Plate | 14 | 16 | ||
External fixation | 4 | |||
Chronic disease | ||||
Hypertension | 4 | 6 | χ2 = 0.000 | 1.000d |
Diabetes | 3 | 3 | χ2 = 0.059 | 0.808d |
Duration of non-union (months), mean ± SD | 15.94±3.75 | 16.11±4.24 | t=-0.135 | 0.893e |
Follow-up period (months), mean ± SD | 15.28±2.58 | 16.30±3.23 | t=-0.970 | 0.338e |