Is early migration enough to explain late clinical loosening of hip prostheses?

Research output: Contribution to journalReview article

Abstract

Prosthetic loosening has been debated for decades, both in terms of the timing and nature of the triggering events. Multiple radiostereometric studies of hip prostheses have now shown that early migration poses a risk of future clinical failure, but is this enough to explain late clinical loosening? To answer this question, the progression of loosening from initiation to radiographic detection is described; and the need for explanations other than early prosthetic loosening is analysed, such as stress-shielding, particle disease, and metal sensitivity. Much evidence indicates that prosthetic loosening has already been initiated during or shortly after the surgery, and that the subsequent progression of loosening is affected by biomechanical factors, fluid pressure fluctuations and inflammatory responses to necrotic cells and cell fragments, i.e. the concept of late loosening appears to be a misinterpretation of late-detected loosening. Clinical implications: atraumatic surgery and initial prosthetic stability are crucial in ensuring low risk of prosthetic loosening.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Rheumatology and Autoimmunity

Keywords

  • Periprosthetic osteolysis, Prosthetic loosening, Radiostereometric analysis
Original languageEnglish
Pages (from-to)113-117
Number of pages5
JournalEFORT open reviews
Volume5
Issue number2
Publication statusPublished - 2020 Feb 3
Publication categoryResearch
Peer-reviewedYes