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Femoral Shaft Fractures
Updated: Jan 31 2025

Gamma4™ Trochanteric Nail (Short)

Images
https://upload.orthobullets.com/topic/423216/images/53fd253f-9aa7-4b4a-abd6-ec8e888e49ee_gamma4_short_trochanteric_nail_1a.jpg
https://upload.orthobullets.com/topic/423216/images/7390c052-2cb2-4872-bcbd-d93314b590e9_gamma4_short_trochanteric_nail_1b.jpg
  • Gamma4 Design
    • Trochanteric Nail
      • The Gamma4 Trochanteric Nail is 170mm long and has a 4º ML bend. Diameter options include 9,10,11,12 and 13mm.  It is offered in CCD angles 120, 125, and 130 degrees.
    • Shortened Proximal Body
      • Proximal diameter of Ø15.5mm
      • The distance from the proximal tip of the nail to the Lag Screw has been reduced by 5mm compared to the legacy system. A bevel was added as well for less trochanteric protrusion.
      • Optional end caps available
    • Straight Shaft for Universal Application
      • Due to the straight shaft, the Gamma4 trochanteric nail can be universally applied (left/right sides).
    • Medial Bevel for Nail Insertion
      • Medial bevel added to the distal tip of the nail to ease insertion into the canal.
  • Indications
    • The Gamma4 Trochanteric Nails are indicated for the treatment of stable and unstable fractures as well as for stabilization of bones and correction of bone deformities in the intracapsular and trochanteric regions of the femur (including osteoporotic and osteopenic bone).
    • The RC Lag Screw is also indicated for use to support rotationally unstable fractures. The RC lag screw is a combination between a standard lag screw and a blade, increasing the surface area of the lag screw by up to 2.4mm
  • Approaches
    • It is acknowledged that several alternative approaches to certain elements of the procedure are available, and may have advantages for particular situations or surgeons.
  • Screws
    • Trochanteric Nail
      • Trochanteric Nail
      • Lag Screw
      • Diameter: ∅10.5mm
      • Length Options: 70 - 130mm (5mm increments)
      • Thread Length: 30mm
      • Lag Screw advances 0.8mm per ¼ turn.
      • Cannulated for ∅3.9mm Precision Pin™
      • Cannulated Set Screw
      • Pre-inserted
      • Set screws designed for controlled subsidence
      • Locking Orientations: Every 90 Degrees Standard Lag Screw
      • Every 180 degrees RC Lag Screw
      • RC Lag Screw
      • Diameter 10.5mm
      • Length options: 70-130mm (5mm increments)
      • Thread Length: 30mm
      • RC Lag Screw advances 1.6mm per ½  turn
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