Document Detail

Therapeutic ultrasound improves strength of achilles tendon repair in rats.
MedLine Citation:
PMID:  14597348     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to evaluate the effects of therapeutic ultrasound on structural properties and functional performance of Achilles tendon healing. Thirty Sprague-Dawley rats with surgical hemitransected Achilles tendon were studied. Ten were treated daily with 1 MHz continuous ultrasound at 1.0 W/cm2 for 4 min, 11 at 2.0 W/cm2 for 4 min and nine served as control without treatment. Achilles functional index (AFI) was recorded preoperatively and on postoperative days 3, 10 and 30. On day 30, the rats were sacrificed and Achilles tendons were tested for load-relaxation, stiffness and ultimate tensile strength (UTS). Results showed that UTS of both low-dose (p=0.023) and high-dose (p=0.002) groups was significantly greater than in controls. No significant differences in AFI (p=0.179), load-relaxation (p=0.205) and stiffness (p=0.842) were found among groups. These findings suggested that both low- and high-dose therapeutic ultrasound accelerate the healing process of ruptured tendon.
Christine O Y Ng; Gabriel Y F Ng; Edwina K N See; Mason C P Leung
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Ultrasound in medicine & biology     Volume:  29     ISSN:  0301-5629     ISO Abbreviation:  Ultrasound Med Biol     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2003-11-04     Completed Date:  2004-03-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0410553     Medline TA:  Ultrasound Med Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1501-6     Citation Subset:  IM    
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
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MeSH Terms
Achilles Tendon / injuries*,  physiopathology
Rats, Sprague-Dawley
Recovery of Function
Stress, Mechanical
Tendon Injuries / therapy*
Tensile Strength
Ultrasonic Therapy / methods*
Wound Healing

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