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Primary Hip System

ECHELON Primary Hip Stem

Product Information

ECHELON hip implants are part of a family of femoral stems that address Primary and Revision situations. With one set of instruments, a variety of stems can be implanted. For the patient, ECHELON stems are designed with the goal of providing long-term, pain-free restoration of joint function and normal hip biomechanics. Primary System released in 1999.  

Clinical Goals:

• Fixation
• Range of Motion
• Versatility
• Simplicity

System Features


Neck Offset Options
Standard and high offset options are available to ensure the appropriate joint tension.

Optimized 12/14 Taper
Modular femoral heads are locked onto the stem with an optimized 12/14 taper which contributes to an increased range of motion.

Neck Geometry
Circulotrapezoidal neck provides increased range of motion compared to a circular neck of the same strength. Polished surface improves fatigue strength.

Driving Platform
The ECHELON implants feature a threaded driving platform with an elliptical slot for rotational and axial implant control during insertion.

Shoulder Relief
Lateral shoulder is rounded to minimize the risk of fracturing the greater trochanter during stem insertion.

Lateral Proximal Flare
ECHELON has a 3 degree proximal anterior / posterior flare to improve proximal fill, without preventing implant seating.

Porous Coating
RoughCoat TM porous coating increases the friction between the implant and the bone, improving implant stability and providing a porous surface for bone ingrowth

All ECHELON implants are manufactured from Cobalt Chromium allowing for extensive porous coating of the stem.

Size Range
ECHELON Primary stems are offered in 1mm increments to minimize bone removal and provide optimum canal fill.

Distal Flutes
The ECHELON system offers distal flutes to increase rotational stability.

Distal Slot
The distal slot eases stem insertion, reduces the risk of fracture and reduces distal stem stiffness.

Distal Bullet Tip
The bullet tip reduces the stress between the distal implant tip and the bone to minimize end-of-stem thigh pain.

Design and Technology

ECHELON Design and Technology

General Specifications:

  • Cobalt Chromium Material
  • Neck Shaft Angle 131˚
  • Standard Collar Shaft Angle 50˚
  • Primary Stem Length 130-160 mm*
  • Porous-Coating Length 90-108 mm**
  • The broach is .5 mm smaller than the implant.
  • Distal flute diameter is .25 mm larger than porous coated-cylindrical diameter.

* Stem length is measured from the collar to the distal tip.

** Porous coating length is measured from the shoulder to the distal end of the coating.

3 Degree Proximal Flare

  • Enhanced Proximal Fit and Fill
  • Improved loading of proximal femur to resist stress shielding and bone resorption
  • 5mm press fit with broach

Coronal Slot

  • Reduces Distal Stem Stiffness
  • Less Thigh Pain

Distal Bullet Tip

  • Polished
  • Reduces the stress between the distal implant tip and bone to minimize end-of-stem thigh pain

Circulotrapezoidal Neck

  • Better Range of Motion over Cylindrical Neck
  • Polished to Avoid Debris Generation


ECHELON Primary Hip Indications

Indications for use of the ECHELON Primary Hip System include individuals undergoing primary and revision surgery where other treatments or devices have failed in rehabilitating hips damaged as a result of Trauma or non-inflammatory degenerative joint disease (NIDJD) including:

  • Osteoarthritis
  • Avascular necrosis
  • Traumatic arthritis
  • Slipped capital epiphysis
  • Fused hip
  • Fracture of the pelvis and diastrophic variant

Also indicated for inflammatory degenerative joint disease Including:

  • Rheumatoid arthritis
  • Arthritis secondary to a variety of diseases and anomalies and congenital dysplasia;
  • Treatments of non-union
  • Femoral neck fracture
  • Trochanteric fractures of the proximal femur with head involvement that are unmanageable using other techniques
  • Endoprosthesis
  • Femoral osteotomy
  • Girdlestone resection
  • Fracture dislocation of the hip
  • Correction of deformity.