Skip to main content

Table 1 Abductor Moment Arm for Commerical Prostheses and Native Femur

From: Hip abductor moment arm - a mathematical analysis for proximal femoral replacement

  Muscle Division Position Abductor Moment Arm (cm)
    Biomet - Letson Biomet - Finn Stryker - GMRS Native Femur
   30° Adduction 4.2 3.6 4.5 4.5
  Anterior Neutral 4.9 4.8 5.4 6.0
   45° Abduction 3.5 5.2 4.4 7.4
   30° Adduction 3.6 2.9 3.8 3.7
Gluteus Medius Middle Neutral 4.7 4.3 5.1 5.4
   45° Abduction 4.6 5.4 5.4 7.2
   30° Adduction 2.8 2.0 2.9 2.6
  Posterior Neutral 4.0 3.5 4.2 4.2
   45° Abduction 5.0 5.0 5.5 6.2
   30° Adduction 4.6 4.1 5.0 5.5
  Anterior Neutral 5.0 5.2 5.6 7.1
   45° Abduction 2.5 4.5 3.0 7.3
   30° Adduction 3.8 3.0 4.0 4.0
Gluteus Minimus Middle Neutral 4.8 4.5 5.3 6.1
   45° Abduction 4.3 5.4 5.0 7.8
   30° Adduction 2.7 1.8 2.8 2.4
  Posterior Neutral 4.0 3.4 4.3 4.5
   45° Abduction 5.0 5.2 5.6 6.9
   30° Adduction 3.6 2.9 3.8 3.8
Mean All Divisions Neutral 4.6 4.3 5.0 5.6
   45° Abduction 4.2 5.1 4.8 7.1