Reconstruction 101 Practice Test

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Which of the following is NOT a Polarstem stem size option?

0-11 Standard

1-11 Lateral

0-7 Valgus

0-13 Standard

Polarstem sizes are defined by a two-number code plus a configuration suffix, where the first number indicates size/offset, the second number indicates stem length, and the suffix shows the variant (Standard, Lateral, or Valgus). The catalog includes combinations like 0-11 Standard, 1-11 Lateral, and 0-7 Valgus. There is no 0-13 Standard in that lineup, so that length isn’t offered. So, 0-13 Standard isn’t a valid Polarstem option, while the others match available configurations.

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