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Since pulsed low-intensity ultrasound (frequency: 1.5 MHz, pulsed by 1 kHz, signal burst width: 200 microseconds, intensity: 30 mW/cm2) has been proven to stimulate fracture healing both clinically and experimentally, our question was whether this therapy also accelerates healing of fresh stable scaphoid fractures. Addressing this question, we did the following prospective randomized clinical trial. Regarding the results of former clinical fresh fracture studies by Heckman and Kristiansen, we postulated that low intensity ultrasound accelerates healing by about 30%. Based on this thesis, we calculated that 30 patients divided into two groups would be necessary to show significant differences between the standard treatment (treated by casting) and an adjunctive ultrasound treatment (treated by casting and additional daily 20 minutes ultrasound treatment) if present. Diagnosis and healing was assessed by CT scans every two weeks. CT's were analyzed by two independent radiologists and one hand surgeon. Furthermore, areas of cancellous bone bridging in correlation to the diameter of the scaphoid was measured in each CT scan. The results showed ultrasounded fractures healing in 43.2 +/- 10.9 days versus 62 +/- 19.2 days in the control group (p < 0.01). Trabecular bridging six weeks after injury showed 81.2% +/- 10.4% healed in the ultrasound-stimulated fractures versus 54.6% +/- 29% in the control (p < 0.05). Our study results confirm those of Heckman and Kristiansen and show a similar acceleration of bone healing. Low intensity ultrasound is successful in accelerating the healing of fresh scaphoid fractures.
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
October 2005,
Orthopedics,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
May 2015,
Journal of orthopaedic surgery and research,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
April 2009,
Indian journal of orthopaedics,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
March 2022,
Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
November 2019,
The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
December 2005,
Foot and ankle clinics,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
July 2002,
CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
February 2012,
American journal of orthopedics (Belle Mead, N.J.),
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
May 2015,
Journal of wrist surgery,
E Mayr, and
M M Rudzki, and
M Rudzki, and
B Borchardt, and
H Häusser, and
A Rüter
April 2006,
Injury,
