Advancements in micromotion-based fixation systems for fracture healing
Micromotion—defined as controlled cyclic axial movement at the fracture site—has emerged as a promising approach to enhance bone fracture healing. This review aims to evaluate micromotion-based fixation systems across biomechanical, preclinical, and clinical domains, highlighting their benefits, lim...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2025-06-01
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| Series: | Journal of Orthopaedic Surgery |
| Online Access: | https://doi.org/10.1177/10225536251352559 |
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| _version_ | 1850113376530726912 |
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| author | Jiaxin Lv Weichen Qi Frankie Ka Li Leung |
| author_facet | Jiaxin Lv Weichen Qi Frankie Ka Li Leung |
| author_sort | Jiaxin Lv |
| collection | DOAJ |
| description | Micromotion—defined as controlled cyclic axial movement at the fracture site—has emerged as a promising approach to enhance bone fracture healing. This review aims to evaluate micromotion-based fixation systems across biomechanical, preclinical, and clinical domains, highlighting their benefits, limitations, and technological progress. We summarize key micromotion technologies applied across various fixation systems, including far cortical locking and dynamic locking mechanisms in screws, suspension-based and shape-memory alloy-driven adjustments in plates, dynamization approaches in intramedullary nails through selective removal of interlocking components, and the evolution of external fixators from manually adjusted systems to intelligent, sensor-guided constructs such as the OrthoSpin frame.While internal fixations often rely on passive micromotion with limited controllability and potential safety concerns, external systems allow precise control but lack consensus on optimal stimulation parameters. Future advancements should focus on integrating real-time sensing and adaptive feedback to tailor micromotion based on healing stages and patient-specific needs. |
| format | Article |
| id | doaj-art-c160c56f9e8e44c0809479b33a0a8f0d |
| institution | OA Journals |
| issn | 2309-4990 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Orthopaedic Surgery |
| spelling | doaj-art-c160c56f9e8e44c0809479b33a0a8f0d2025-08-20T02:37:10ZengSAGE PublishingJournal of Orthopaedic Surgery2309-49902025-06-013310.1177/10225536251352559Advancements in micromotion-based fixation systems for fracture healingJiaxin LvWeichen QiFrankie Ka Li LeungMicromotion—defined as controlled cyclic axial movement at the fracture site—has emerged as a promising approach to enhance bone fracture healing. This review aims to evaluate micromotion-based fixation systems across biomechanical, preclinical, and clinical domains, highlighting their benefits, limitations, and technological progress. We summarize key micromotion technologies applied across various fixation systems, including far cortical locking and dynamic locking mechanisms in screws, suspension-based and shape-memory alloy-driven adjustments in plates, dynamization approaches in intramedullary nails through selective removal of interlocking components, and the evolution of external fixators from manually adjusted systems to intelligent, sensor-guided constructs such as the OrthoSpin frame.While internal fixations often rely on passive micromotion with limited controllability and potential safety concerns, external systems allow precise control but lack consensus on optimal stimulation parameters. Future advancements should focus on integrating real-time sensing and adaptive feedback to tailor micromotion based on healing stages and patient-specific needs.https://doi.org/10.1177/10225536251352559 |
| spellingShingle | Jiaxin Lv Weichen Qi Frankie Ka Li Leung Advancements in micromotion-based fixation systems for fracture healing Journal of Orthopaedic Surgery |
| title | Advancements in micromotion-based fixation systems for fracture healing |
| title_full | Advancements in micromotion-based fixation systems for fracture healing |
| title_fullStr | Advancements in micromotion-based fixation systems for fracture healing |
| title_full_unstemmed | Advancements in micromotion-based fixation systems for fracture healing |
| title_short | Advancements in micromotion-based fixation systems for fracture healing |
| title_sort | advancements in micromotion based fixation systems for fracture healing |
| url | https://doi.org/10.1177/10225536251352559 |
| work_keys_str_mv | AT jiaxinlv advancementsinmicromotionbasedfixationsystemsforfracturehealing AT weichenqi advancementsinmicromotionbasedfixationsystemsforfracturehealing AT frankiekalileung advancementsinmicromotionbasedfixationsystemsforfracturehealing |