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Fischer C, Miska M, Jung A, Weber MA, Saure D, Schmidmaier G, Weimer A, Moghaddam A, Doll J. Posttraumatic Perfusion Analysis of Quadriceps, Patellar, and Achilles Tendon Regeneration With Dynamic Contrast-Enhanced Ultrasound and Dynamic Contrast-Enhanced Magnetic Resonance Imaging: Preliminary Results. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2021; 40:491-501. [PMID: 32785982 DOI: 10.1002/jum.15424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 04/12/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVES The healing process of tendons after surgical treatment of tendon ruptures mainly depends on the perfusion of the tendon and its surrounding tissue. Dynamic contrast-enhanced ultrasound (DCE-US) and dynamic contrast-enhanced MRI (DCE-MRI) can provide additional information about the local microperfusion. In this pilot study, the feasibility of these techniques to assess the vascularization during tendon regeneration was evaluated. METHODS Between 2013 and 2015, 23 patients with surgical treatment of traumatic rupture of quadriceps, patellar, and Achilles tendons were involved. All patients received clinical follow-up examinations at 6, 12, and at least 52 weeks postoperatively. Dynamic contrast-enhanced US and DCE-MRI examinations were performed 6 and 12 weeks postoperatively. Dynamic contrast-enhanced US perfusion was quantified by the parameters peak enhancement, wash-in area under the curve, rise time, and initial area under the curve. Correlations between these parameters were examined via the Spearman rank correlation. The clinical and functional outcomes were assessed via the Lysholm Knee Score and Knee and Osteoarthritis Outcome Score at 12 and 52 weeks postoperatively. RESULTS Fourteen patients with quadriceps (n = 8), patellar (n = 4) and Achilles (n = 2) tendon ruptures with complete follow-up were available. The microperfusion could be successful assessed. We could detect a strong correlation of DCE-US (peak enhancement) parameters with DCE-MRI (initial area under the curve) parameters after 6 and 12 weeks. CONCLUSIONS In this pilot study, DCE-US was able to visualize the microperfusion of healing tendons with a strong correlation with DCE-MRI. Our initial results are in favor of DCE-US as a potential quantitative imaging tool for evaluating the vascularization in tendon regeneration as a complementary method.
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Affiliation(s)
- Christian Fischer
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
| | - Matthias Miska
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
| | - Andreas Jung
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
| | - Marc-André Weber
- Department of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology, and Neuroradiology, University Medical Center Rostock, Rostock, Germany
| | - Daniel Saure
- Institute of Medical Biometry, University of Heidelberg, Heidelberg, Germany
| | - Gerhard Schmidmaier
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
| | - Andreas Weimer
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
| | - Arash Moghaddam
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
- Aschaffenburg Trauma and Orthopedic Research Group, Center for Trauma Surgery, Orthopedics, and Sports Medicine, Aschaffenburg, Germany
| | - Julian Doll
- Center of Orthopedics, Trauma Surgery, and Spinal Cord Injury, Heidelberg Trauma Research Group, Heidelberg University Hospital, Heidelberg, Germany
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Quack V, Betsch M, Hellmann J, Eschweiler J, Schrading S, Gatz M, Rath B, Tingart M, Laubach M, Kuhl CK, Dirrichs T. Evaluation of Postoperative Changes in Patellar and Quadriceps Tendons after Total Knee Arthroplasty-A Comprehensive Analysis by Shear Wave Elastography, Power Doppler and B-mode Ultrasound. Acad Radiol 2020; 27:e148-e157. [PMID: 31526688 DOI: 10.1016/j.acra.2019.08.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 02/04/2023]
Abstract
RATIONALE AND OBJECTIVES Up to now, the diagnosis of tendinopathies is based on conventional B-mode-ultrasound (B-US), Power Doppler-ultrasound (PD-US), and magnetic resonance imaging. In the past decade, Shear Wave Elastography (SWE) has been introduced in tendon imaging, for example in athletes or patients suffering from tendinopathy. SWE allows real-time quantification of tissue stiffness, and, by this, the assessment of the mechanical properties of a tendon and its changes during acute disease and tendon healing. So far there are no ultrasound-based studies that have evaluated postoperative tendon changes, anatomical and mechanical properties and tendon healing of the patellar, and quadriceps tendon following Total Knee Arthroplasty (TKA). The purpose of this prospective study was two-fold: first to analyze morphologic, vascular, and mechanical properties of patellar and quadriceps tendons in patients following TKA; and, second to evaluate possible changes thereof and their visibility in the course of time. MATERIALS AND METHODS Observational cross-sectional, IRB-approved study in 63 postoperative patients with a total of 76 total knee arthroplasties (50 unilateral, 13 bilateral) and 50 nonoperated knees for comparison, resulting in 152 postoperative patellar- and quadriceps and 100 nonoperated patellar- and quadriceps-tendons for comparative analysis. For further examination, we divided the 63 patients into two groups according to the duration since surgery (group A < 24 months; group B > 24 months). All patients completed a standardized questionnaire, furthermore the Knee Society score and the Knee Society function score. The amount of experienced pain was assessed using the ordinal numeric rating scale and the presence of anterior knee pain was examined. Subsequently every participant underwent a standardized multimodal ultrasound protocol consisting of B-US, PD-US, and SWE of the left and right patellar and quadriceps tendons. RESULTS Using the different US-modalities, operated patellar, and quadriceps tendons (n = 152) were significantly more frequent classified as pathological (B-US) (p < 0.001), the mean Ohberg score was significantly higher (PD-US) (p < 0.001), and the tendons were significantly softer (SWE) than their nonoperated counterparts (n = 100). Mean SWE-value of postoperative patellar tendons was 45.66 ± 14.84 kPa versus 60.08 ± 19.13 kPa in nonoperated knees (p < 0.001). Mean SWE-value of postoperative quadriceps tendons was 35.73 ± 15.66 kPa versus 52.69 ± 16.20 kPa in nonoperated knees (p < 0.001). Comparing the two postoperative groups (group A and B), we recognized a significant decrease of pathologically classified patellar and quadriceps tendons (B-US and PD-US) in group B. The early postoperatively reduced SWE values slightly increased during the course of time. CONCLUSION After TKA, patellar, and quadriceps tendons show significant measurable alterations in B-US, PD-US, and SWE. Especially a significant decrease of tendon stiffness in operated knees, as assessed by SWE, might be a surrogate marker for changed mechanical properties. These alterations improve, the longer ago the surgery was. The quantitative information obtained by SWE could be of particular interest in follow-up and therapy monitoring after TKA. Knowledge about tendon stiffness and it's varieties in different population groups (e.g. athletes, elderly, postoperative patients) is crucial to sonographically rate a tendon as "healthy" or "diseased."
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Affiliation(s)
- Valentin Quack
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Marcel Betsch
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Julian Hellmann
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Jörg Eschweiler
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Simone Schrading
- Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Pauwelsstraße 30, Aachen 52074, Germany
| | - Matthias Gatz
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Björn Rath
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Markus Tingart
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Markus Laubach
- Department of Orthopedics, University Hospital RWTH Aachen, Aachen, Germany
| | - Christiane K Kuhl
- Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Pauwelsstraße 30, Aachen 52074, Germany
| | - Timm Dirrichs
- Department of Diagnostic and Interventional Radiology, University Hospital RWTH Aachen, Pauwelsstraße 30, Aachen 52074, Germany.
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Prado-Costa R, Rebelo J, Monteiro-Barroso J, Preto AS. Ultrasound elastography: compression elastography and shear-wave elastography in the assessment of tendon injury. Insights Imaging 2018; 9:791-814. [PMID: 30120723 PMCID: PMC6206379 DOI: 10.1007/s13244-018-0642-1] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/22/2018] [Accepted: 06/21/2018] [Indexed: 12/27/2022] Open
Abstract
Ultrasound elastography (USE) is a recent technology that has experienced major developments in the past two decades. The assessment of the main mechanical properties of tissues can be made with this technology by characterisation of their response to stress. This article reviews the two major techniques used in musculoskeletal elastography, compression elastography (CE) and shear-wave elastography (SWE), and evaluates the studies published on major electronic databases that use both techniques in the context of tendon pathology. CE accounts for more studies than SWE. The mechanical properties of tendons, particularly their stiffness, may be altered in the presence of tendon injury. CE and SWE have already been used for the assessment of Achilles tendons, patellar tendon, quadriceps tendon, epicondylar tendons and rotator cuff tendons and muscles. Achilles tendinopathy is the most studied tendon injury with USE, including the postoperative period after surgical repair of Achilles rupture tendon. In relation to conventional ultrasound (US), USE potentially increases the sensitivity and diagnostic accuracy in tendinopathy, and can detect pathological changes before they are visible in conventional US imaging. Several technical limitations are recognised, and standardisation is necessary to ensure repeatability and comparability of the results when using these techniques. Still, USE is a promising technique under development and may be used not only to promote an early diagnosis, but also to identify the risk of injury and to support the evaluation of rehabilitation interventions. KEY POINTS: • USE is used for the assessment of the mechanical properties of tissues, including the tendons. • USE increases diagnostic performance when coupled to conventional US imaging modalities. • USE will be useful in early diagnosis, tracking outcomes and monitoring treatments of tendon injury. • Technical issues and lack of standardisation limits USE use in the assessment of tendon injury.
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Affiliation(s)
- Rui Prado-Costa
- Department of Physical and Rehabilitation Medicine, Centro Hospitalar São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - João Rebelo
- Department of Radiology, Centro Hospitalar São João, Porto, Portugal.
| | - João Monteiro-Barroso
- Department of Physical and Rehabilitation Medicine, Centro Hospitalar São João, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Ana Sofia Preto
- Department of Radiology, Centro Hospitalar São João, Porto, Portugal
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Zhang Q, Cai Y, Hua Y, Shi J, Wang Y, Wang Y. Sonoelastography shows that Achilles tendons with insertional tendinopathy are harder than asymptomatic tendons. Knee Surg Sports Traumatol Arthrosc 2017; 25:1839-1848. [PMID: 27342984 DOI: 10.1007/s00167-016-4197-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 06/07/2016] [Indexed: 01/18/2023]
Abstract
PURPOSE To seek differences of Achilles tendon hardness between insertional tendinopathy (IT) and asymptomatic controls by using computer-assisted quantification on axial-strain sonoelastography (ASE). METHODS The study consisted of 37 non-athletic patients presenting with Achilles tendon pain in one or two tendons. Both tendons were examined clinically. Among the 74 tendons, 16 were diagnosed and categorized into an IT group and 29 into an asymptomatic group. The remaining 29 tendons were excluded due to non-insertional tendinopathy, ruptures, previous surgery or mixed disorders. The tendons in the IT and asymptomatic groups were examined with both ASE and conventional ultrasound. Computer-assisted quantification on ASE was conducted to extract parameters of tendon hardness, including the 20th percentile (H20), median (H50) and skewness (Hsk) of the hardness within tendon, as well as the ratio of the mean hardness within tendon to that outside tendon (Hratio). RESULTS The H20 (p = 0.003), H50 (p = 0.004) and Hratio (p = 0.002) were larger and Hsk (p = 0.001) was smaller at distal thirds of IT tendons than those of asymptomatic tendons. For differentiation between two groups, the Hsk achieved the best value (0.815) of area under the receiver operating characteristic curve, with a sensitivity of 81.3 %, a specificity of 86.2 % and an accuracy of 84.4 %. CONCLUSIONS Computer-assisted quantification on ASE shows that IT tendons are harder than asymptomatic tendons. It might act as a potentially useful technique for identification and risk stratification of IT patients and thus be valuable in day-by-day clinical practice for monitoring IT progression and for evaluating therapeutic effects. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Qi Zhang
- Institute of Biomedical Engineering, Shanghai University, Shanghai, 200444, China
| | - Yehua Cai
- Department of Ultrasound, Huashan Hospital, Fudan University, No. 12, Urumqi Middle Road, Shanghai, 200438, China.
| | - Yinghui Hua
- Department of Sports Medicine, Huashan Hospital, Fudan University, No. 12, Urumqi Middle Road, Shanghai, 200438, China.
| | - Jun Shi
- Institute of Biomedical Engineering, Shanghai University, Shanghai, 200444, China
| | - Yuanyuan Wang
- Department of Electronic Engineering, Fudan University, Shanghai, 200433, China
| | - Yi Wang
- Department of Ultrasound, Huashan Hospital, Fudan University, No. 12, Urumqi Middle Road, Shanghai, 200438, China
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Loibl M, Lang S, Brockhoff G, Gueorguiev B, Hilber F, Worlicek M, Baumann F, Grechenig S, Zellner J, Huber M, Valderrabano V, Angele P, Nerlich M, Prantl L, Gehmert S. The effect of leukocyte-reduced platelet-rich plasma on the proliferation of autologous adipose-tissue derived mesenchymal stem cells. Clin Hemorheol Microcirc 2017; 61:599-614. [PMID: 25536920 DOI: 10.3233/ch-141920] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Clinical application of platelet-rich plasma (PRP) and stem cells has become more and more important in regenerative medicine during the last decade. However, differences in PRP preparations may contribute to variable PRP compositions with unpredictable effects on a cellular level. In the present study, we modified the centrifugation settings in order to provide a leukocyte-reduced PRP and evaluated the interactions between PRP and adipose-tissue derived mesenchymal stem cells (ASCs).PRP was obtained after modification of three different centrifugation settings and investigated by hemogram analysis, quantification of protein content and growth factor concentration. ASCs were cultured in serum-free α-MEM supplemented with autologous 10% or 20% leukocyte-reduced PRP. Cell cycle kinetics of ASCs were analyzed using flow cytometric analyses after 48 hours.Thrombocytes in PRP were concentrated, whereas erythrocytes, and white blood cells (WBC) were reduced, independent of centrifugation settings. Disabling the brake further reduced the number of WBCs. A higher percentage of cells in the S-phase in the presence of 20% PRP in comparison to 10% PRP and 20% fetal calf serum (FCS) advocates the proliferation stimulation of ASCs.These findings clearly demonstrate considerable differences between three PRP separation settings and assist in safeguarding the combination of leukocyte-reduced PRP and stem cells for regenerative therapies.
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Affiliation(s)
- Markus Loibl
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Siegmund Lang
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Gero Brockhoff
- Department of Obstetrics and Gynecology, University Medical Center Regensburg, Regensburg, Germany
| | | | - Franz Hilber
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Michael Worlicek
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Florian Baumann
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Stephan Grechenig
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Johannes Zellner
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Michaela Huber
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Victor Valderrabano
- Department of Orthopedic Surgery, University Hospital Basel, Basel, Switzerland
| | - Peter Angele
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Michael Nerlich
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Lukas Prantl
- Center of Plastic, Hand and Reconstructive Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Sebastian Gehmert
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany.,Department of Orthopedic Surgery, University Hospital Basel, Basel, Switzerland.,Center of Plastic, Hand and Reconstructive Surgery, University Medical Center Regensburg, Regensburg, Germany
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Maranho DA, Leonardo FHL, Herrero CF, Engel EE, Volpon JB, Nogueira-Barbosa MH. The quality of Achilles tendon repair five to eight years after percutaneous tenotomy in the treatment of clubfoot. Bone Joint J 2017; 99-B:139-144. [DOI: 10.1302/0301-620x.99b1.bjj-2016-0131.r1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 08/16/2016] [Indexed: 12/23/2022]
Abstract
Aims Our aim was to describe the mid-term appearances of the repair process of the Achilles tendon after tenotomy in children with a clubfoot treated using the Ponseti method. Patients and Methods A total of 15 children (ten boys, five girls) with idiopathic clubfoot were evaluated at a mean of 6.8 years (5.4 to 8.1) after complete percutaneous division of the Achilles tendon. The contour and subjective thickness of the tendon were recorded, and superficial defects and its strength were assessed clinically. The echogenicity, texture, thickness, peritendinous irregularities and potential for deformation of the tendon were evaluated by ultrasonography. Results The appearance of the Achilles tendon was slightly abnormal, with more thickening and less conspicuous contours than a normal tendon. Its strength was grossly normal, with no insufficiency of the triceps surae. Ultrasonographic findings revealed a mild fusiform thickening in 12 children (80%). The tissue at the site of the repair had a slightly hypoechoic, fibrillar quality with hyperechoic striation and the anterior contour was irregular and blurred. There was a focal narrowing within the healing tissue in two children. Conclusion This mid-term evaluation of the ability of the Achilles tendon to repair after division suggests a combination of intrinsic and extrinsic mechanisms. There were minor abnormalities which did not appear to affect function. Cite this article: Bone Joint J 2017;99-B:139–44.
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Affiliation(s)
- D. A. Maranho
- University of São Paulo, Av.
Caramuru, nº 2100, apto
1424, Alto da Boa Vista, 14025-710, Ribeirão
Preto, State of São Paulo, Brazil
| | - F. H. L. Leonardo
- Ribeirão Preto Medical School, University
of São Paulo, Av. Bandeirantes, nº
3900, Monte Alegre, City:
Ribeirão Preto, State of São Paulo, Brazil
| | - C. F. Herrero
- Ribeirão Preto Medical School, University
of São Paulo, Av. Bandeirantes, nº
3900, Monte Alegre, City:
Ribeirão Preto, State of São Paulo, Brazil
| | - E. E. Engel
- University of São Paulo, Av.
Bandeirantes, nº 3900, Sub-sector:
Monte Alegre, City: Ribeirão Preto, State
of São Paulo, Brazil
| | - J. B. Volpon
- Ribeirão Preto Medical School, University
of São Paulo, Av. Bandeirantes, nº
3900, Monte Alegre, City:
Ribeirão Preto, State of São Paulo, Brazil
| | - M. H. Nogueira-Barbosa
- Ribeirão Preto Medical School, University
of São Paulo, Av. Bandeirantes, nº
3900, Monte Alegre, City:
Ribeirão Preto, State of São Paulo, Brazil
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Zhang LN, Wan WB, Wang YX, Jiao ZY, Zhang LH, Luo YK, Tang PF. Evaluation of Elastic Stiffness in Healing Achilles Tendon After Surgical Repair of a Tendon Rupture Using In Vivo Ultrasound Shear Wave Elastography. Med Sci Monit 2016; 22:1186-91. [PMID: 27072885 PMCID: PMC4835154 DOI: 10.12659/msm.895674] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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.
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Affiliation(s)
- Li-ning Zhang
- Department of Orthopedics, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
| | - Wen-bo Wan
- Department of Ultrasound, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
| | - Yue-xiang Wang
- Department of Ultrasound, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
| | - Zi-yu Jiao
- Department of Ultrasound, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
| | - Li-hai Zhang
- Department of Orthopedics, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
| | - Yu-kun Luo
- Department of Ultrasound, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
| | - Pei-fu Tang
- Department of Orthopedics, Chinese People's Liberation Army General Hospital, Beijing, China (mainland)
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Abstract
Tendinopathy is a debilitating musculoskeletal
condition which can cause significant pain and lead to complete rupture
of the tendon, which often requires surgical repair. Due in part
to the large spectrum of tendon pathologies, these disorders continue
to be a clinical challenge. Animal models are often used in this
field of research as they offer an attractive framework to examine
the cascade of processes that occur throughout both tendon pathology and
repair. This review discusses the structural, mechanical, and biological
changes that occur throughout tendon pathology in animal models,
as well as strategies for the improvement of tendon healing. Cite this article: Bone Joint Res 2014;3:193–202.
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Affiliation(s)
- M W Hast
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| | - A Zuskov
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| | - L J Soslowsky
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
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