Self-locking Stem Characteristics:

The Self-locking Stem design of Surgival is based on the original development made by Maurice E. Müller in 1976, with some of our own features that enhance its performance.

The flat, decreasing, wedge-shaped form provides excellent anti-rotational stability and adequate elasticity to facilitate implant insertion in a neutral position, preventing varus/valgus positioning. The longitudinal groove increases the anti-rotational stability of the stem since it is filled with either bone cement in cemented stems or by trabecular bone in the cementless stems.

Specifications

• Progressive off-set.
• 12/14 taper.
• 135º cervical–diaphyseal angle.
• Support area on the base of the neck over the osteotomy to prevent the prosthesis from sinking.
• The contour seeks to achieve good primary metaphyseal stability with press-fit  and distal mechanical stability in the smooth area, thereby achieving a very stable biological fixation.
• Available in cemented and cementless versions.

Hydroxyapatite cementless self-locking

• Made from Titanium Alloy (Ti6Al4V).
• Hydroxyapatite  spray coating (130 µm) that provides a porous surface with excellent biocompatibility and generates an ideal structure for bone growth.
• Use: Cementless

Titanium Plasma Spray Cementless Self-locking

• Made from Titanium Alloy (Ti6Al4V).
• Titanium plasma spray coating (150 µm) that provides a porous surface with excellent biocompatibility and generates an ideal structure for bone growth.
• Use: Cementless

Titanium Cemented Self-locking

• Made from Titanium Alloy (Ti6Al4V).
• Smooth surface finish for cement application.
• Use: Cemented

High Nitrogen Stainless Steel Cemented Self-locking

• Made from High Nitrogen Stainless Steel.
• Smooth polished surface finish for cement application.
• Use: Cemented

Sizes

• 9 lengths: 137 mm, 143 mm,  146 mm, 149 mm,  150mm, 153.5 mm, 157 mm, 162 mm and 170 mm.