Designed to match femoral anatomy
The triple taper, self-locking POLARSTEM◊ design with reinforced proximal body allows for excellent proximal stability. The shortened stem length and narrow distal top allows for ease of implantation, especially in small intramedullary canals like Dorr Type A femurs.
Implant features and instrument options
POLARSTEM offers several design features that assist with muscle sparing approaches:
• Thick proximal area to help reduce the risk of subsidence
• Shorter stem length than other fully HA coated stems
• Thin distal area with a narrow tip, making it easier to implant through a smaller incision
• Broaches with compaction teeth anterior/posterior and bone cutting teeth medial/lateral that allow for an optimal fit between the stem and cortical bone
• 180 microns of Ti-plasma spray plus 50 microns of HA
• Standard and lateral versions available in both *collared and collarless options
• The *collared stems provide secondary stability
• Valgus stem available to provide a reduced offset option and address valgus femur types instrument set
• Simple and user friendly instrumentation for all surgical approaches
• Offset of the lateral stems is increased by 3.5 mm compared to the standard stem to better reconstruct the hip biomechanics
• The valgus stem provides a reduced offset option to address difficult valgus, abnormalities
*Collared Stems are only available in the United States.
1. Australian Orthopaedic Association National Joint Replacement Registry Annual report. Adelaide: AOA; 2014
2.Parikh, P. Hill, V. Pawar and J. Sprague, “Long-tern simulator wear performance of an advanced bearing technology for THA,” Orthop Res Soc, San Antonio, TX, Jan 26-29, 2013, 1028
3.Cite: Lutes, W. “POLARSTEM Collarless – My Experience.” A presentation at the POLARSTEM Users Group Meeting, Las Vegas, NV. 2015.