| Title |
Lower material stiffness in rupture‐repaired Achilles tendon during walking: transmission‐mode ultrasound for post‐surgical tendon evaluation
|
|---|---|
| Published in |
Knee Surgery, Sports Traumatology, Arthroscopy, June 2017
|
| DOI | 10.1007/s00167-017-4624-5 |
| Pubmed ID | |
| Authors |
Mathias Wulf, Mihir Shanker, Michael Schuetz, Michael Lutz, Christian M. Langton, Sue L. Hooper, James E. Smeathers, Torsten Brauner, Scott C. Wearing |
| Abstract |
This cross-sectional study used transmission-mode ultrasound to evaluate dynamic tendon properties during walking in surgically repaired and contralateral Achilles tendon (AT), with a median (range) post-operative period of 22 (4-58) months. It was hypothesised that the axial transmission speed of ultrasound (TSOU) during walking would be slower, indicating lower material stiffness in repaired compared with contralateral AT. Ten patients [median (range) age 47 (37-69) years; height 180 (170-189) cm; weight 93 (62-119) kg], who had undergone open surgical repair of the AT and were clinically recovered according to their treating clinicians, walked barefoot on a treadmill at self-selected speed (1.0 ± 0.2 m/s). Synchronous measures of TSOU, sagittal ankle motion, vertical ground reaction force (GRF), and spatiotemporal gait parameters were recorded during 20 s of steady-state walking. Paired t tests were used to evaluate potential between-limb differences in TSOU, GRF, ankle motion, and spatiotemporal gait parameters. TSOU was significantly lower (≈175 m/s) in the repaired than in the contralateral AT over the entire gait cycle (P < 0.05). Sagittal ankle motion was significantly greater (≈3°) in the repaired than in the contralateral limb (P = 0.036). There were no significant differences in GRF or spatiotemporal parameters between limbs. Repaired AT was characterised by a lower TSOU, reflecting a lower material stiffness in the repaired tendon than in the contralateral tendon. A lower material stiffness may underpin greater ankle joint motion of the repaired limb during walking and long-term deficits in the muscle-tendon unit reported with AT repair. Treatment and rehabilitation approaches that focus on increasing the material stiffness of the repaired AT may be clinically beneficial. Transmission-mode ultrasound would seem useful for quantifying tendon properties post AT rupture repair and may have the potential to individually guide rehabilitation programmes, thereby aiding safer return to physical activity. II. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 79 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 79 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 12 | 15% |
| Student > Ph. D. Student | 10 | 13% |
| Student > Bachelor | 7 | 9% |
| Researcher | 5 | 6% |
| Student > Doctoral Student | 4 | 5% |
| Other | 14 | 18% |
| Unknown | 27 | 34% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 21 | 27% |
| Nursing and Health Professions | 10 | 13% |
| Sports and Recreations | 10 | 13% |
| Engineering | 3 | 4% |
| Arts and Humanities | 2 | 3% |
| Other | 3 | 4% |
| Unknown | 30 | 38% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 07 November 2018.
All research outputs
#18,565,641
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Outputs from Knee Surgery, Sports Traumatology, Arthroscopy
#2,127
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#241,455
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Outputs of similar age from Knee Surgery, Sports Traumatology, Arthroscopy
#32
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