humeral nailing

Humeral nail
l For diaphysis(P/3 – M/3), proximal humerus (SN)
l For pathological fracture

Design concept：
l Spiral blade：increased surface area for load distribution
Small hole for suture anchoring of rotator cuff
l Compression design
l Locking design
l Oblique design

Increased tip – screw hole distance
Avoid stress concentration induced peri-implant fracture

Right and left, antegrade or retrograde
End cap from tissue ingrowth into threads
Proximal end: 5 mm below tip of greater trochanter
Distal end: 2.5 cm above olecranon fossa

Entry point
Proximal: lateral edge of acromion
Cartilage跟bone的交界處