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Complete fibular hemimelia: a long-term review of four cases.

Acta orthopaedica Belgica·2002
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Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
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[Conservative femoral implants. Short stems].

C Valverde-Mordt1, D Valverde-Belda

  • 1Servicio de Cirugía Ortopédica y Traumatología, Hospital Arnau de Vilanova, Valencia, España. carvalmor@telefonica.net

Revista Espanola De Cirugia Ortopedica Y Traumatologia
|November 27, 2012
PubMed
Summary

Short stem hip replacements offer a bone-preserving alternative to traditional cemented implants and hip resurfacing. These conservative designs show promising medium-term results, potentially reducing thigh pain and bone remodeling.

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Area of Science:

  • Orthopedic surgery
  • Biomaterials engineering
  • Musculoskeletal research

Background:

  • Traditional cemented hip replacements have well-established outcomes.
  • Hip resurfacing is popular for young adults but has limitations like implant neck fragility and metal-on-metal wear.
  • Uncemented implants aim to preserve bone and soft tissue, with short stem designs emerging as a key innovation.

Purpose of the Study:

  • To analyze and classify different designs of conservative short stem hip implants.
  • To evaluate the biomechanical characteristics and morphological features of these implants.
  • To assess the medium-term clinical outcomes of short stem hip replacements.

Main Methods:

  • Review and classification of various short stem hip implant designs based on morphology and biomechanics.
  • Analysis of existing literature and medium-term clinical series reporting on these implants.
  • Comparison of short stem implants with cemented and resurfacing hip replacements.

Main Results:

  • Short stem uncemented hip replacements demonstrate comparable results to cemented arthroplasty.
  • Designs focus on proximal metaphyseal support, aiming to preserve bone stock and reduce thigh pain.
  • Hip resurfacing, while conservative, presents risks related to implant neck strength and tribology.

Conclusions:

  • Short stem hip replacement is a viable alternative to conventional implants and hip resurfacing.
  • These implants offer potential advantages in bone preservation and reduced adverse effects.
  • Medium-term data suggests promising clinical outcomes for conservative short stem designs.