AO/ASIF (Soft tissue Classification)

Question 1

INtergumentary Injury (I) Closed (C)

Answer 1

IC1:No skin lesion, 
IC2:Contusons but no skin Lacs   
IC3: Circuscribed degloving  
IC4:Extensive closed Degloving
IC5:Necrosis from contusion

Question 2

Intergumentary Injury (I) Open (O)

Answer 2

IO1:Skin breakage from inside out.
IO2:Skin breakage from Outside IN5cm, Increased contusion, Devitalized edges.
IO4:Considerable full thickness contusion, abrasion, extesive open degloving,skin loss

Question 3

Muscle/ Tendon Injury (MT)

Answer 3

MT1: no muscle injury
MT2:Circumscribed muscle injury, one compartment only
MT3:Circumscribed muscle injury, two compartments
MT4:Muscle defect, tendon lac, extensive muscle contusion
MT5: Compartment syndrome, crush syndrome w/ wide injury zone

Question 4

Neurovascular Injury (NV)

Answer 4

NV1:No NV injury
NV2: Isolated nerve injury
NV3: Isolated vascular Injury
NV4: Extensive segmental vasular injury
NV5: Combined neurovascular injury, subrotal and total amputation