Osteogenesis induced by extracorporeal shockwave in treatment of delayed osteotendinous junction healing
Healing at the osteotendinous junction (OTJ) is challenging in orthopedic surgery. The present study aimed to test extracorporeal shockwave (ESW) in treatment of a delayed OTJ healing. Twenty‐eight rabbits were used for establishing a delayed healing (DH) model at patella‐patellar‐tendon (PPT) compl...
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Published in | Journal of orthopaedic research Vol. 28; no. 1; pp. 70 - 76 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Hoboken
Wiley Subscription Services, Inc., A Wiley Company
01.01.2010
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Subjects | |
Online Access | Get full text |
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Summary: | Healing at the osteotendinous junction (OTJ) is challenging in orthopedic surgery. The present study aimed to test extracorporeal shockwave (ESW) in treatment of a delayed OTJ healing. Twenty‐eight rabbits were used for establishing a delayed healing (DH) model at patella‐patellar‐tendon (PPT) complex after partial patellectomy for 4 weeks and then were divided into DH and ESW groups. In the ESW group, a single ESW treatment was given at postoperative week 6 to the PPT healing complex. The samples were harvested at week 8 and 12 for radiographic and histological evaluations with seven samples for each group at each time point. Micro‐CT results showed that new bone volume was 1.18 ± 0.61 mm3 in the ESW group with no measurable new bone in the DH group at postoperative week 8. Scar tissue formed at the OTJ healing interface of the DH group, whereas ESW triggered high expression of VEGF in hypertrophic chondrocytes at week 8 and regeneration of the fibrocartilage zone at week 12 postoperatively. The accelerated osteogenesis could be explained by acceleration of endochondral ossification. In conclusion, ESW was able to induce osteogenesis at OTJ with delayed healing with enhanced endochondral ossification process and regeneration of fibrocartilage zone. These findings formed a scientific basis to potential clinical application of ESW for treatment of delayed OTJ healing. © 2009 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 28:70–76, 2010 |
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Bibliography: | ArticleID:JOR20948 istex:187442D10BB4C9FC6118C5DD23123CDF2C518B55 ark:/67375/WNG-LLM0MXFH-P ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0736-0266 1554-527X |
DOI: | 10.1002/jor.20948 |