Peak Valgus Torque
64.5 Nm
UCL Tensile Stress
285 N
Graft Longevity Factor
94%
Pitching Delivery Phase Frame Scrubbing
Max External Rotation (Cocking Phase)
Valgus Torque
OPTIMAL
64.5 Nm
Native UCL Ultimate Tensile Yield: ~32 Nm
Ligament Yield Stress
STRESS HIGH
285 N
Flexor-pronator dynamic dampening: -22 Nm
Safety Margin Index
1.24x
1.24x
Ratio of structural strength to peak torque load
Surgical Graft Micro-Wear
LOW WEAR
3.2%
Degradation rate over 35 pitches
Biomechanical Technique Mechanics Comparison
Native Intact Ligament
Original palmaris/ulnar collateral tissue. Dependent heavily on dynamic muscular stabilization from flexor pronator mass. Extreme vulnerability at >95 MPH.
Peak Load Limit: ~32 Nm
Failure Risk: High
Figure-8 / Jobe Technique
Original 1974 Dr. Frank Jobe technique used on Tommy John. Requires detachment of flexor tendon mass and figure-eight bone tunneling.
Graft Strength: 100% Native
Fixation Rigidity: Medium
Docking Technique
Modern gold standard. Single humeral tunnel with suture docking. Preserves flexor muscle attachment and yields superior rotational stability.
Graft Strength: 125% Native
Fixation Rigidity: High
Docking + Internal Brace
High-strength collagen-coated tape collagen matrix augmentation acting as a secondary seatbelt during high velocity acceleration.
Graft Strength: 180% Native
Fixation Rigidity: Ultra