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[New developments in the application of resorbable implants]

K E Rehm1, H J Helling, C Gatzka

  • 1Klinik und Poliklinik für Unfall-, Hand- und Wiederherstellungschirurgie, Universität zu Köln.

Der Orthopade
|May 1, 1997
PubMed
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Biodegradable implants, like polypin and polyactide screws, show comparable mechanical stability and clinical outcomes to traditional metal implants for fractures. These polymer implants can reduce overall costs, though resorption may be slow.

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Polymer engineering

Background:

  • Biodegradable implants offer innovative solutions in orthopedic surgery.
  • Their application presents both advantages and disadvantages that require careful evaluation.
  • Polypin and polyactide implants are examples of biodegradable devices with potential clinical utility.

Purpose of the Study:

  • To evaluate the efficacy and safety of biodegradable implants in orthopedic fracture fixation.
  • To compare the mechanical stability and clinical outcomes of biodegradable implants versus traditional metal implants.
  • To assess the cost-effectiveness and resorption profile of biodegradable devices.

Main Methods:

  • A prospective, randomized study with a two-year follow-up was conducted.

Related Experiment Videos

  • 183 patients with radial head fractures were included in the study.
  • Mechanical stability was compared between 2.7 mm Polypin and 1.8 mm K-wires for distal radius fractures.

    • Main Results:

    • The primary mechanical stability of distal radius fractures fixed with 2.7 mm Polypin was comparable to 1.8 mm K-wires.
    • No significant differences in results or complications were observed between metal and polyactide implants for radial head fractures.
    • Orientruded polyactide screws demonstrated good clinical results, but resorption occurred late (5-7 years).

    Conclusions:

    • Biodegradable implants, specifically polyactide-based devices, can be recommended for radial head fractures and similar indications.
    • Despite potentially higher initial device costs, polymer implants can lead to overall cost reduction.
    • Further research into optimizing the resorption rate of biodegradable implants is warranted.