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Product Overview

The POLARSTEM has been clinically used since 2002 and is based on a philosophy that has yielded excellent clinical results in the last 25 years. The triple taper, self-locking design with reinforced proximal body allows for excellent proximal stability. The shortened stem length and narrow distal top allows for ease of implantation.

The POLARSTEM can be used for all standard femoral morphologies. The range of stems allows the implant to be matched to all bone sizes, thereby reproducing the natural hip architecture. The simple surgical technique leads to reproducible results and allows implantation using both conventional and minimally invasive techniques.

Primary hip replacement solution

The POLARSTEM is the primary hip replacement solution for:

  • EVERY patient1
  • EVERY approach2
  • EVERY bearing3

Adobe Acrobat PDF icon Read how the POLARSTEM  and R3◊ cementless hip combination is performing in the UK (PDF 1MB)

View the POLARSTEM animation


1Subject to the indications, contraindications, risk factors, intraoperative, postoperative and other guidance provided in the instructions for use and surgical technique brochure. Cementless and cemented stem options for different intramedullary anatomies and bone qualities (Surgical technique Lit. 1513, Instruction for use Lit. 12.23, X-Ray templates Lit. 2193, 2196)

2Easy implantation with state-of-the-art less-invasive approaches, such as the direct anterior approach. (Product description Lit. 1640)

3Tested and approved with appropriately sized femoral head options offered by Smith&Nephew. Stainless steel heads should not be combined with titanium stems. (Instruction for use Lit. 12.23 and information Lit. 2174)

Design and Technology


Reinforced proximal section

• Improves metaphyseal stability, assisting in prevention of stem subsidence

Shorter and narrow distal section

• Provides ease of insertion and stem positioning
• Reduces the risk of thigh pain and stress shielding



Product portfolio

• Standard and lateral version available

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 lateral stems also have a varus deviation of 2.5 mm in relation to the vertical stem axis to better restore the anatomy and to stabilize the muscle tensor fasciae latae


POLARSTEMSurface structure

Prevention of subsidence

• Beveled, end-to-end grooves perpendicular to the load axis for optimal load distribution


Increased rotational stability

• Distal grooves are in reverse to the rotational axis



Excellent primary stability and accelerated osseointegration. The stems are coated with high grade, open-pored pure titanium applied by vacuum plasma spray.

A hydroxyapatite layer is applied to the open-pored titanium plasma coating in the same process step. The result: excellent adhesion.


The POLARSTEM Standard and Lateral Femoral Stems with Ti/HA are indicated for:

• Advanced degeneration of the hip joint as a result of degenerative, post-traumatic or rheumatoid arthritis.

• Fracture or avascular necrosis of the femoral head

• Failure of previous hip surgery: joint reconstruction, internal fixation, arthrodesis, hemiarthroplasty, surface replacement arthroplasty, or total hip replacement

• All forms of osteoarthritis

• Patients with hips at risk of dislocation

• Femoral neck fracture or proximal fracture to hip joint.

The POLARSTEM Standard and Lateral Femoral Stem with Ti/HA is intended for single use only and is to be implanted without bone cement.


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Smith & Nephew is providing information in this site for general educational use only, and does not intend for this to be construed as medical advice or used as a substitute for the advice of your physician. For questions or concerns about a previous or upcoming surgery, Smith & Nephew recommends that you contact your healthcare professional.