Table 12.36.4
Epidemiology and classification of clavicle fractures
Type1: medial 1/5Type 2: middle 3/5Type 3: lateral 1/5

A1: undisplaced extra-articular

1.7%

A1: undisplaced

5.4%

A1: undisplaced extra-articular

16.2%

A2: undisplaced intra-articular

0.6%

A2: angulated with contact

13.5%

A2: undisplaced intra-articular

1.9%

B1: displaced extra-articular

0.2%

B1: simple wedge

37.5%

B1: displaced extra-articular

8.5%

B2: displaced intra-articular

0.3%

B2: segmental/fragmented wedge

12.8%

B2: displaced intra-articular

1.4%

2.8%

69.2%

28%

Type1: medial 1/5Type 2: middle 3/5Type 3: lateral 1/5

A1: undisplaced extra-articular

1.7%

A1: undisplaced

5.4%

A1: undisplaced extra-articular

16.2%

A2: undisplaced intra-articular

0.6%

A2: angulated with contact

13.5%

A2: undisplaced intra-articular

1.9%

B1: displaced extra-articular

0.2%

B1: simple wedge

37.5%

B1: displaced extra-articular

8.5%

B2: displaced intra-articular

0.3%

B2: segmental/fragmented wedge

12.8%

B2: displaced intra-articular

1.4%

2.8%

69.2%

28%

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