Scholarlink

Purpose <p>Osteonecrosis of the femoral head (ONFH) requires effective removal of necrotic tissue to improve surgical outcomes. Conventional curettes often fail to address clinical needs due to limitations in cutting capability, strength, and adaptability. This study introduces a disposable multi-angle eccentric curette designed to enhance necrotic bone removal during core decompression surgery.</p> Methods <p>The curette was designed with a stainless head featuring wavy cutting edges and oblique grooves for efficient cutting and debris removal. An eccentric rotation mechanism enabled adjustable scraping radii through incremental rotations (60°/120°/180°), forming an inverted bowl-shaped removal area. Performance was evaluated through static torsional strength and dynamic abrasion tests, along with usability assessments by seven orthopedic surgeons.</p> Results <p>The curette achieved average maximum torque of 849.72&#xa0;±&#xa0;50.57 N-cm, exceeding the clinical benchmark of 640 N-cm. Dynamic testing over 300 simulated cycles demonstrated stable cutting performance and precise scraping, with diameter deviations remaining within acceptable limits (initial: 1.05%, final: 5.75%). Usability feedback highlighted its practicality and ease of operation, achieving a satisfaction rate of 97.6%.</p> Conclusion <p>This innovative design addresses critical limitations of existing tools by offering enhanced strength, adaptability, and cutting efficiency. These findings validate the curette’s potential to improve ONFH surgical outcomes.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Design and Biomechanical Evaluation of a Disposable Eccentric Curette for Effective Necrotic Bone Removal in Core Decompression Surgery

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月7日

查看全文
  • Yu-Kuan Lin,
  • Hsuan-Wen Wang,
  • Po-Kuei Wu,
  • Chun-Li Lin

摘要

Purpose

Osteonecrosis of the femoral head (ONFH) requires effective removal of necrotic tissue to improve surgical outcomes. Conventional curettes often fail to address clinical needs due to limitations in cutting capability, strength, and adaptability. This study introduces a disposable multi-angle eccentric curette designed to enhance necrotic bone removal during core decompression surgery.

Methods

The curette was designed with a stainless head featuring wavy cutting edges and oblique grooves for efficient cutting and debris removal. An eccentric rotation mechanism enabled adjustable scraping radii through incremental rotations (60°/120°/180°), forming an inverted bowl-shaped removal area. Performance was evaluated through static torsional strength and dynamic abrasion tests, along with usability assessments by seven orthopedic surgeons.

Results

The curette achieved average maximum torque of 849.72 ± 50.57 N-cm, exceeding the clinical benchmark of 640 N-cm. Dynamic testing over 300 simulated cycles demonstrated stable cutting performance and precise scraping, with diameter deviations remaining within acceptable limits (initial: 1.05%, final: 5.75%). Usability feedback highlighted its practicality and ease of operation, achieving a satisfaction rate of 97.6%.

Conclusion

This innovative design addresses critical limitations of existing tools by offering enhanced strength, adaptability, and cutting efficiency. These findings validate the curette’s potential to improve ONFH surgical outcomes.