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<p>Medial unicompartmental knee arthroplasty (UKA) has been introduced in the fifties to treat patients with medial tibio-femoral osteoarthritis. Initial reports, showed encouraging functional outcomes, tempered by high loosening rates. With advances in the materials and prosthetic designs UKA has become common, representing more than 11% of all knee replacement surgeries and growing at a rate of 32.5% per year. This fast increase is the consequence of the new radiographic, clinical and patient-related indications. In the past, indications were strict although not universally accepted with several grey zones. More recently, indications have expanded, but there is consensus on the different aspects. The present fist-part comprehensive review focuses on the indications for medial UKA analyzing practical aspects such as patient activity and age, BMI, coronal alignment ligament competency, patella-femoral osteoarthritis, other compartments involvement with a comparison between historical approach and modern evidence. Hot topics and future directions will be discussed in the second-part of the review.</p>

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Current concepts of medial unicompartmental knee replacement: part 1 history and actual indications

  • 期刊论文

  • 发表日期：

    2025年12月15日

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  • Simone Cerciello,
  • Fabrizio Mocini,
  • Lorenzo Proietti,
  • Dario Candura,
  • Santagada Domenico Alessandro,
  • Michele Mercurio,
  • Philippe Neyret

摘要

Medial unicompartmental knee arthroplasty (UKA) has been introduced in the fifties to treat patients with medial tibio-femoral osteoarthritis. Initial reports, showed encouraging functional outcomes, tempered by high loosening rates. With advances in the materials and prosthetic designs UKA has become common, representing more than 11% of all knee replacement surgeries and growing at a rate of 32.5% per year. This fast increase is the consequence of the new radiographic, clinical and patient-related indications. In the past, indications were strict although not universally accepted with several grey zones. More recently, indications have expanded, but there is consensus on the different aspects. The present fist-part comprehensive review focuses on the indications for medial UKA analyzing practical aspects such as patient activity and age, BMI, coronal alignment ligament competency, patella-femoral osteoarthritis, other compartments involvement with a comparison between historical approach and modern evidence. Hot topics and future directions will be discussed in the second-part of the review.