Rockwood Adults CH64

2830

SECTION FOUR • Lower Extremity

Subgroups and Qualifications: Tibia/fibula, malleolar, infrasyndesmotic, isolated (44-A1) 1. Rupture of lateral collateral ligament (44-A1.1)

2. Avulsion of tip of lateral malleolus (44-A1.2)

3. Transverse fracture of lateral malleolus (44-A1.3)

A1

Tibia/fibula, malleolar, infrasyndesmotic lesion with medial malleolar fracture (44-A2) (1) transverse

(2) oblique (3) vertical 1. Rupture of lateral collateral ligament (44-A2.1)

2. Avulsion of tip of lateral malleolus (44-A2.2)

3. Transverse fracture of lateral malleolus (44-A2.3)

A2

Tibia/fibula, malleolar, infrasyndesmotic lesion with postero-medial fracture (44-A3) 1. Rupture of lateral collateral ligament (44-A3.1) 2. Avulsion of tip of lateral malleolus (44-A3.2)

3. Transverse fracture of lateral malleolus (44-A3.3)

A3

Figure 64-7.  ( Continued ) Subtypes of “A-type” ankle fractures.