Table 1: Spondylodiscitis classification scheme.

Classes

Bone

destruction

Segmental

instability

Epidural

abscess

Neurological

impairment

Para vertebral

involvement

Type A

No

No

No

No

Yes/No

A.1

No

No

No

No

No

(simple discitis)

A.2

No

No

No

No

No

A.3

No

No

No

No

Yes

A.4.1-2

No

No

No

No

Yes

(muscle abscess)

Type B

Yes

Yes/No

No

No

Yes/No

B.1

Yes

No

No

No

No

B.2

Yes

No

No

No

Yes

B.3.1-2

Yes

Yes

No

No

Yes

Type C

Yes/No

Yes/No

Yes

Yes/No

C.1

Yes/No

No

Yes

No

C.2

Yes

Yes

Yes

No

C.3

Yes

No

Yes

Yes

C.4

Yes

Yes

Yes

Yes

Retrieved from: Pola E, et al.31