Journal
ASIA-PACIFIC JOURNAL OF SPORT MEDICINE ARTHROSCOPY REHABILITATION AND TECHNOLOGY
Volume 35, Issue -, Pages 27-31Publisher
ELSEVIER SINGAPORE PTE LTD
DOI: 10.1016/j.asmart.2023.10.003
Keywords
Lateral malleolous; Avulsion fracture; Biomechanics; Double-row anchors fixation; Compression screw fixation
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The stability of double-row suture fixation was found to be equivalent to compression screw fixation in treating lateral malleolar avulsion fractures larger than 10 mm in size with ligament injury, according to our biomechanical testing.
Background: Avulsion fractures of fibula occur with ankle sprains. The purpose of this study was to compare the biomechanical characteristics of double-row suture versus compression screw techniques in treatment of lateral malleolar avulsion fracturelarger than 10 mm in size, which is typically not associated with an anterior talo-fibular ligament injury.Methods: We simulated lateral malleolus avulsion fractures in six matched pairs of 12 human cadaveric ankles. These were then randomly divided into two groups: a double-row fixation group and a compression screw group. Biomechanical testing was performed after surgical fixation. The foot was rotated from the neutral position toward inversion at a rate of 1 degrees /s until 12.5 N-m or structural failure was reached. The final rotation torque, rotation angle, stiffness, and displacement of the ossicles were recorded.Results: No significant difference was found in the final rotation torque (7.60 +/- 3.70 vs 7.23 +/- 2.06 N-m, p = 0.87), rotation angle (43.61 +/- 14.77 degrees vs 40.93 +/- 10.94 degrees, p = 0.56), stiffness (0.19 +/- 0.08 vs 0.13 +/- 0.07, p = 0.33), or displacement (6.11 +/- 5.23 vs 7.09 +/- 5.93 mm, p = 0.77) between the two groups.Conclusions: The stability of the double-row suture fixation was equivalent to compression screw fixation in treating a lateral malleolar avulsion fracture larger than 10 mm in size with ligament injury, as determined by our biomechanical testing.
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