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Evaluation of Elastic Stiffness in Healing Achilles Tendon After Surgical Repair of a Tendon Rupture Using In Vivo Ultrasound Shear Wave Elastography.

Zhang LN, Wan WB, Wang YX, Jiao ZY, Zhang LH, Luo YK, Tang PF - Med. Sci. Monit. (2016)

Bottom Line: Functional outcomes were assessed with the American Orthopedic Foot and Ankle Society (AOFAS) rating system at 12, 24, and 48 weeks postoperatively.General linear regression analysis and correlation coefficients were used to analyze the relationship between elasticity and the AOFAS score.RESULTS There were significant differences with respect to the mean elasticity values and functional scores of the repaired Achilles tendon at 12, 24, and 48 weeks postoperatively (all P<0.05).

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopedics, Chinese People's Liberation Army General Hospital, Beijing, China (mainland).

ABSTRACT
BACKGROUND There has been no published report assessing the mechanical properties of a repaired Achilles tendon after surgery using shear wave elastography (SWE). The aim of this study was to investigate the changes in mechanical properties of the healing Achilles tendon after surgical repair of a tendon rupture using ultrasound SWE and how these changes correlate with tendon function. MATERIAL AND METHODS Twenty-six patients who underwent surgical repair for Achilles tendon rupture were examined with ultrasound SWE coupled with a linear array transducer (4-15 MHz). The elasticity values of the repaired Achilles tendon in a longitudinal view were measured at 12, 24, and 48 weeks postoperatively. Functional outcomes were assessed with the American Orthopedic Foot and Ankle Society (AOFAS) rating system at 12, 24, and 48 weeks postoperatively. General linear regression analysis and correlation coefficients were used to analyze the relationship between elasticity and the AOFAS score. RESULTS There were significant differences with respect to the mean elasticity values and functional scores of the repaired Achilles tendon at 12, 24, and 48 weeks postoperatively (all P<0.05). Tendon function was positively correlated with the elasticity of the repaired Achilles tendon (P=0.0003). CONCLUSIONS Our findings suggest that SWE can provide biomechanical information for evaluating the mechanical properties of healing Achilles tendon and predict Achilles tendon function.

No MeSH data available.


Related in: MedlinePlus

Conventional ultrasound and SWE images of surgically repaired Achilles tendon at 12 weeks postoperatively. The boxes are the regions of interest for quantitative measurement.
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f1-medscimonit-22-1186: Conventional ultrasound and SWE images of surgically repaired Achilles tendon at 12 weeks postoperatively. The boxes are the regions of interest for quantitative measurement.

Mentions: The mean values of elastic modulus of the repaired tendons were significantly different among the 3 time points postoperatively (12 weeks, 187.7±23.8 kPa, range, 163.8~201.7 kPa; 24 weeks, 238.3±25.3 kPa, range, 217.6~263.8 kPa; 48 weeks, and 289.6±23.4 kPa, range, 268.6~295.7 kPa) (P=0.000). SWE results showed that repaired tendons gradually became stiffer postoperatively (Figures 1–3). The mean AOFAS scores were significantly different among the 3 postoperative time points (12 weeks, 84.5±5.1 vs. 24 weeks, 90.5±6.3 vs. 48 weeks, 98.2±3.1) (P =0.000). The elasticity was significantly and positively correlated with the AOFAS scores (P=0.0003, OR=0.9159).


Evaluation of Elastic Stiffness in Healing Achilles Tendon After Surgical Repair of a Tendon Rupture Using In Vivo Ultrasound Shear Wave Elastography.

Zhang LN, Wan WB, Wang YX, Jiao ZY, Zhang LH, Luo YK, Tang PF - Med. Sci. Monit. (2016)

Conventional ultrasound and SWE images of surgically repaired Achilles tendon at 12 weeks postoperatively. The boxes are the regions of interest for quantitative measurement.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4835154&req=5

f1-medscimonit-22-1186: Conventional ultrasound and SWE images of surgically repaired Achilles tendon at 12 weeks postoperatively. The boxes are the regions of interest for quantitative measurement.
Mentions: The mean values of elastic modulus of the repaired tendons were significantly different among the 3 time points postoperatively (12 weeks, 187.7±23.8 kPa, range, 163.8~201.7 kPa; 24 weeks, 238.3±25.3 kPa, range, 217.6~263.8 kPa; 48 weeks, and 289.6±23.4 kPa, range, 268.6~295.7 kPa) (P=0.000). SWE results showed that repaired tendons gradually became stiffer postoperatively (Figures 1–3). The mean AOFAS scores were significantly different among the 3 postoperative time points (12 weeks, 84.5±5.1 vs. 24 weeks, 90.5±6.3 vs. 48 weeks, 98.2±3.1) (P =0.000). The elasticity was significantly and positively correlated with the AOFAS scores (P=0.0003, OR=0.9159).

Bottom Line: Functional outcomes were assessed with the American Orthopedic Foot and Ankle Society (AOFAS) rating system at 12, 24, and 48 weeks postoperatively.General linear regression analysis and correlation coefficients were used to analyze the relationship between elasticity and the AOFAS score.RESULTS There were significant differences with respect to the mean elasticity values and functional scores of the repaired Achilles tendon at 12, 24, and 48 weeks postoperatively (all P<0.05).

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopedics, Chinese People's Liberation Army General Hospital, Beijing, China (mainland).

ABSTRACT
BACKGROUND There has been no published report assessing the mechanical properties of a repaired Achilles tendon after surgery using shear wave elastography (SWE). The aim of this study was to investigate the changes in mechanical properties of the healing Achilles tendon after surgical repair of a tendon rupture using ultrasound SWE and how these changes correlate with tendon function. MATERIAL AND METHODS Twenty-six patients who underwent surgical repair for Achilles tendon rupture were examined with ultrasound SWE coupled with a linear array transducer (4-15 MHz). The elasticity values of the repaired Achilles tendon in a longitudinal view were measured at 12, 24, and 48 weeks postoperatively. Functional outcomes were assessed with the American Orthopedic Foot and Ankle Society (AOFAS) rating system at 12, 24, and 48 weeks postoperatively. General linear regression analysis and correlation coefficients were used to analyze the relationship between elasticity and the AOFAS score. RESULTS There were significant differences with respect to the mean elasticity values and functional scores of the repaired Achilles tendon at 12, 24, and 48 weeks postoperatively (all P<0.05). Tendon function was positively correlated with the elasticity of the repaired Achilles tendon (P=0.0003). CONCLUSIONS Our findings suggest that SWE can provide biomechanical information for evaluating the mechanical properties of healing Achilles tendon and predict Achilles tendon function.

No MeSH data available.


Related in: MedlinePlus