PRIMA Stem Surgical technique
Retroversion Keeping the forearm flexed at 90°, rotate the resection guide until the alignment rod and the forearm are parallel (Figure 3). Then fix the selected retroversion by screwing the threaded rod (Figure 4). A resection with the chosen retroversion will then be performed in this position. If less or more retroversion is required, the rod should be externally or internally rotated, respectively.
Threaded rod
Figure 3
Figure 4
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