Table 1.

Demographic data.

Characteristics n = 62	n (%)
Sex
Male	49 (79.0)
Female	13 (21.0)
Age (Mean ± SD)	47.2 ± 14.7
Location
Tibia	34 (54.8)
Femur	19 (30.6)
Humerus	4 (6.5)
Calcaneus	2 (3.2)
Clavicle	1 (1.6)
Forearm	1 (1.6)
Fibula	1 (1.6)
Cierny-Mader Grade
Type I Medullary osteomyelitis	11 (17.7)
Type II Superficial osteomyelitis	3 (4.8)
Type III Localized osteomyelitis	37 (59.7)
Type IV Diffuse osteomyelitis	11 (17.7)
Physiological class
Class A Good immune system and delivery	47 (75.8)
Class B Compromised locally or systemically risk factors	15 (24.2)
Class C requires suppressive or no treatment; minimal disability	0 (0)
Causes
Post-traumatic	48 (77.4)
Hematogones (non-trauma, sepsis)	14 (22.6)
Previous surgery for this condition
0	15 (24.2)
1	19 (30.6)
2	13 (21.0)
3	8 (12.9)
4	2 (3.2)
5	2 (3.2)
6	1 (1.6)
>7	2 (3.2)
Risk factor
No risk factor	41 (66.1)
Risk	21 (33.9)
Major risk factor: cellulitis or abscess formation	5 (23.8)
Minor systemic risk factor: subject had smoking history	7 (33.3)
Minor systemic risk factor: diabetes mellitus	3 (14.3)
Minor systemic risk factor: anemia	2 (9.5)
Minor systemic risk factor: chronic lung disease	1 (4.8)
Minor local risk factor: poor soft tissue requiring flap	9 (42.9)
Minor local risk factor: adjacent joint stiff/arthritic	7 (33.3)
Minor local risk factor: heterotopic ossification	1 (4.8)