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China Suppliers Factory Offers HARMONY Tapered Femoral Stem with Advanced Design for Enhanced Stability and Bone Ingrowth
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China Suppliers Factory Offers HARMONY Tapered Femoral Stem with Advanced Design for Enhanced Stability and Bone Ingrowth

Discover the ideal fusion of American and European stem designs that cater to the needs of modern orthopedic procedures. Our innovative proximal stepped design enhances the coating surface area, effectively blocking debris and significantly reducing the risk of postoperative loosening. With a specialized rough surface treatment, our product promotes optimal bone ingrowth, ensuring a reliable and strong bond, Engineered for excellent biomechanical performance, this stem provides immediate anti-rotation fixation during surgery, enhancing stability and patient outcomes. Moreover, it offers an optimized range of motion, making it a superior choice for healthcare professionals seeking the best solutions, As a leading supplier from China, our factory is committed to delivering high-quality orthopedic products that meet international standards, ensuring both safety and efficacy for patients around the globe. Elevate your surgical procedures with our top-tier stem designs, engineered for success
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    Product Detail

    Special Description

    HARMONYHARMONY (2)

    Proximal step-design

    Increases coating surface area to block debris, reducing postoperative loosening

    Stair-step and secondary compressive trabecular alignment

    Effectively prevents femoral stem subsidence

    HARMONY (3)

    Optimal Load Transmission

    Pattern of load transmitting follows Wolff's Law

    HARMONY (4)

    Three Coating Options

    1. Ti (Air Plasma Sprayed)
    2. Ti (Vacuum Plasma Sprayed)
    3. Ti+HA (Vacuum Plasma Sprayed)

    Porosity: 70%

    Ti coating thickness: 325 um, HA coating thickness: 50 um

    ● Increase friction with cortical bone for immediate stability
    ● Good biocompatibility effectively promotes bone growth
    HARMONY (7)

    Optimized head-neck ratio

    Significantly increases range of motion

    → 28mm head: increase 12°
    → 32mm head: increase 20°
    HARMONY (8)

    High offset design

    Proportional neck length and offset design effectively increase range of motion

    Special Instrumentation

    HARMONY Tapered Stem (1)

    HARMONY™ Stem, Ti (Air Plasma Sprayed)

    Specification Stem length (mm) Offset Neck Angle Material
    09# 135 38 130° Ti6Al4V
    10# 140 38
    11# 145 40
    12# 150 40
    13# 155 44
    14# 160 44
    15# 165 46
    16# 170 46
    HARMONY Tapered Stem (2)

    HARMONY™ Stem, Ti (Vacuum Plasma Sprayed)

    Specification Stem length (mm) Offset Neck Angle Material
    09# 134 38 130° Ti6Al4V
    10# 140 38
    11# 145 40
    12# 151 40
    13# 156 44
    14# 162 44
    15# 168 46
    16# 173 46
    17# 178 48
    HARMONY Tapered Stem (3)

    HARMONY™ Stem, Ti+HA (Vacuum Plasma Sprayed)

    Specification Stem length (mm) Offset Neck Angle Material
    09# 134 38 130° Ti6Al4V
    10# 140 38
    11# 145 40
    12# 151 40
    13# 156 44
    14# 162 44
    15# 168 46
    16# 173 46
    17# 178 48

    Video

    Technology Education

    download
    JUST MED_Surgical Technique Manual_HARMONY Tapered Stem_Cementless.pdf
    download

    FAQ

    1. Which patients is this hip implant suitable for?
    (1) Patients with Low Soft Tissue Tension: Ideal for individuals with reduced peri-hip soft tissue tension, such as frail elderly female patients.
    (2) Extensive Soft Tissue Release Cases: Beneficial for surgeries that involve wide soft tissue release. In these cases, postoperative soft tissue laxity can predispose to dislocation, and adjustments via the femoral head alone may be insufficient (especially when using ceramic heads).
    (3) Post-Coxa Vara Correction: In patients undergoing correction of coxa vara, a standard (132° neck-shaft angle) femoral stem might cause limb lengthening; the Harmony design minimizes this risk.
    (4) Complex Femoral Anatomy: For patients with trumpet-shaped or champagne cup–shaped femurs, achieving an optimal proximal press-fit may require upsizing the implant, which can lead to limb lengthening—our design helps to balance this challenge.
    (5) Developmental Dysplasia of the Hip (DDH): Especially useful in cases with a shallow, small acetabular cavity, where deeper reaming and precise femoral head centralization are necessary.
    (6) Femoral Dysplasia: Suitable for patients with a narrow medullary canal and a relatively long femoral neck.
    (7) Post-Pelvic Osteotomy Cases: Advantageous for patients with medial displacement of the acetabular rotation center following procedures like pelvic osteotomy.
    2. Can patients undergo MRI scans after implantation?

    Yes, the implant is made from non-magnetic materials like titanium, titanium alloys, and cobalt-chromium-molybdenum alloys, ensuring MRI safety. JUST MEDICAL's products meet these standards, but always inform your radiologist before scanning.

    3. Does this product support cemented or cementless fixation?
    Designed exclusively for cementless fixation.
    Promotes excellent long-term bone growth for stable and durable fixation.
    Eliminates the need for bone cement.
    4. What are the key design features that prevent femoral stem subsidence?

    The proximal step-design increases the coating surface area to block debris and reduce postoperative loosening. Combined with stair-step and secondary compressive trabecular alignment, it effectively prevents femoral stem subsidence.

    5. What coating options are available for the HARMONY™ Stem?

    The HARMONY™ Stem offers three coating options: Ti (Air Plasma Sprayed), Ti (Vacuum Plasma Sprayed), and Ti+HA (Vacuum Plasma Sprayed) with a 70% porosity. The Ti coating thickness is 325 um, and the HA coating thickness is 50 um.

    6. How does the head-neck ratio design affect the range of motion?

    The optimized head-neck ratio significantly increases the range of motion. Using a 28mm head increases the range by 12°, while a 32mm head increases it by 20°.

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