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Table 2 Relative fatigue life of the locking screws

From: Fatigue strength of common tibial intramedullary nail distal locking screws

Manufacturer Diameter (mm) Mean Life St. Dev
Ace 4.5 10115 4426
Biomet 4.0 1502 615
  5.0 360881 469213
Synthes 3.9 1413 490
  4.9 16121 3426
Howmedica – Alta 3.7 888 608
  5.0 1000000 -1
Russell-Taylor 4.5 18238 4009
  5.0 46736 13702
S&N – Trigen 5.0 436248 487507
  1. 1 None of the Howmedica screws failed and so the St Dev is undefined