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Biodegradable implantable balloons: Mechanical stability under physiological conditions.

Moran Haim Zada1, Awanish Kumar1, Omar Elmalak2

  • 1Institute of Drug Research, School of Pharmacy-Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel.

Journal of the Mechanical Behavior of Biomedical Materials
|September 2, 2019
PubMed
Summary

Biodegradable Poly-(L-lactide-co-ε-caprolactone) (PLCL) spacers effectively treat rotator cuff injuries. These implants maintain mechanical stability for over 8 weeks, ensuring sufficient healing and rehabilitation time.

Keywords:
Biodegradable balloonsImplantable spacerMechanical stabilityPoly-L-lactide-co-ε-caprolactone (PLCL)

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Area of Science:

  • Biomaterials Science
  • Orthopedic Surgery
  • Medical Device Engineering

Background:

  • Rotator cuff tendon injuries result from trauma or degeneration.
  • Biodegradable Poly-(L-lactide-co-ε-caprolactone) (PLCL) spacers are used for treatment.
  • Implants must withstand mechanical stress to remain effective.

Purpose of the Study:

  • To evaluate the mechanical stability of PLCL balloon spacers under cyclic loading.
  • To predict the in vivo physical stability of these implants.
  • To inform safety and efficacy assessments for medical practitioners.

Main Methods:

  • In vitro cyclic loading tests were performed on PLCL balloon spacers.
  • Mechanical stability limits were assessed under prolonged stress.
  • Fatigue life of the implants was determined.

Main Results:

  • The PLCL balloon spacer implant demonstrated mechanical integrity beyond 8 weeks of fatigue cycling.
  • The implant's stability exceeds the typical timeframe required for patient rehabilitation.
  • Failure due to mechanical loading was not observed within the tested period.

Conclusions:

  • PLCL balloon spacers offer a stable and effective treatment option for rotator cuff injuries.
  • The demonstrated mechanical durability supports their use in facilitating patient recovery.
  • This study provides crucial data for the clinical application and assessment of PLCL spacers.