Hip Pelvis.  2016 Jun;28(2):65-75. 10.5371/hp.2016.28.2.65.

Implant Design in Cementless Hip Arthroplasty

• Kim JT
• Yoo JJ

• KMID: 2328341
• DOI: http://doi.org/10.5371/hp.2016.28.2.65

Abstract

When performing cementless hip arthroplasty, it is critical to achieve firm primary mechanical stability followed by biological fixation. In order to achieve this, it is essential to fully understand characteristics of implant design. In this review, the authors review fixation principles for a variety of implants used for cementless hip replacement and considerations for making an optimal selection.

Keyword

Hip replacement arthroplasty; Cementless; Implant design

MeSH Terms

Arthroplasty*
Arthroplasty, Replacement, Hip
Hip*

Figure

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  Fig. 1 1st generation of hemispherical acetabular cup: Harris-Galante I cup (Zimmer, USA).

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  Fig. 2 2nd generation of hemispherical acetabular cup: Trilogy cup (Zimmer, USA).

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  Fig. 3 Types of 3rd generation of hemispherical press-fix acetabular cups. (A) Metal bead coated Pinnacle cup (DePuy, USA). (B) Plasma spray coated Bencox cup (Corentec, Korea). (C) Tantalum coated Continuum cup (Zimmer, USA).

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  Fig. 4 Design elements of cementless femoral stems.

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  Fig. 5 Type 1 stems. (A) Bencox ID stem (Corentec, Korea). (B) Taperloc stem (Biomet, USA).

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  Fig. 6 Type 2 stems. (A) Summit stem (DePuy, USA). (B) Echo Bi-Metric stem (Biomet, USA).

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  Fig. 7 Type 3A Mallory Head stem (Biomet, USA).

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  Fig. 8 (A) Type 3B Wagner stem (Zimmer, USA). (B, C) Cortical bone is fixed using multiple extruded thin plates thereby provide rotation stability.

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  Fig. 9 Type 3C stems. (A) Bencox stem (Corentec, Korea). (B) Zweymüeller Alloclassic stem (Zimmer, USA). (C) CLS stem (Zimmer, USA).

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  Fig. 10 Type 4 stems. (A) AML stem (DePuy, USA). (B) Versys Beaded Fullcoat stem (Zimmer, USA).

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  Fig. 11 Type 5 stems. (A) S-ROM stem (DePuy, USA). (B) Revitan stem (Zimmer, USA). (C) Arcos stem (Biomet, USA).

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  Fig. 12 Type 6 stem. The design of this stem type was intended to fit with proximal femurs; femoral stems are curved.

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  Fig. 13 Short femoral stems. (A) Proxima stem (DePuy, USA). (B) Metha stem (Aesculap, Germany). (C) Clinical case. Due to existing femoral implants from knee revision, Proxima stems were utilized for hip arthroplasty.

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  Fig. 14 Types of mid-short stems. (A) Bencox M stem (Corentec, Korea). (B) Trilock stem (DePuy, USA). (C) M/L Taper stem (Zimmer, USA). (D) Taperloc Microplasty stem (Biomet, USA).

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  Fig. 15 (A) The Bencox M stem (Corentec, Korea) representing recent stem characteristics. (B) Operative radiographs.

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  Fig. 16 M/L Taper Kinectiv stem with modular neck (Zimmer, USA).

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  Fig. 17 The Dual Mobility system (Biomet, USA) comprising two joint planes with ceramic bone head-highly cross-linked polyethylene liner-metal joint plane acetabular cup.

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