ArticleFoot & ankle international2018
Achilles Tendon Resting Angle Relates to Tendon Length and Function.
Article in Foot & ankle international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
25 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Characterizing Musculoskeletal Tissue Mechanics Based on Shear Wave Propagation: A Systematic Review of Current Methods and Reported Measurements.Annals of biomedical engineering · 2022Pooled it
- Achilles tendon elongation after acute rupture: is it a problem? A systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Pooled it
- Randomised three-armed trial investigation of the Copenhagen Achilles tendon Rupture Treatment Algorithm (CARTA) for individualised treatment of acute Achilles tendon rupture.British journal of sports medicine · 2026Trial
- Open surgery and minimally invasive repair of acute Achilles tendon rupture: stratified outcomes based on immobilization duration in a prospective cohort study.Journal of orthopaedic surgery and research · 2025Trial
- Data driven model of midportion achilles tendinopathy health created with factor analysis.BMC musculoskeletal disorders · 2022Trial
- Reliability of the Copenhagen Achilles length measure (CALM) on patients with an Achilles tendon rupture.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Trial
- Article
- Comparing Quantification Methodologies for the Single-Leg Heel-Rise in Patients Following Operative and Non-Operative Management for Achilles Tendon Rupture.International journal of sports physical therapy · 2026Article
- Minimal effect of scanning parameters on ultrasound shear wave elastography variability in tendons.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2024Article
- Regional healing trajectory of the patellar tendon after bone-patellar tendon-bone autograft harvest for anterior cruciate ligament reconstruction.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2024Article
- Feasibility of an early progressive resistance exercise program for acute Achilles tendon rupture.Pilot and feasibility studies · 2024Article
- Rehabilitation and Return to Sports after Achilles Tendon Repair.International journal of sports physical therapy · 2024Article
- Differential elongation of the gastrocnemius after Achilles tendon rupture: a novel technique of selective shortening to treat push-off weakness with case series and literature review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Review
- Correlation between the Coaptation and Regeneration of Tendon Stumps in Endoscopic Assisted Achilles Tendon Rupture Repair.Orthopaedic surgery · 2023Article
- Achilles tendon resting angle is able to detect deficits after an Achilles tendon rupture, but it is not a surrogate for direct measurements of tendon elongation, function or symptoms.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- Greater heel-rise endurance is related to better gait biomechanics in patients surgically treated for chronic Achilles tendon rupture.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- 1.7 cm elongated Achilles tendon did not alter walking gait kinematics 4.5 years after non-surgical treatment.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- Patients with chronic Achilles tendon rupture have persistent limitations in patient-reported function and calf muscle function one year after surgical treatment - a case series.Journal of experimental orthopaedics · 2022Article
- Slowed-Down Rehabilitation Following Percutaneous Repair of Achilles Tendon Rupture.Foot & ankle international · 2022Article
- Loss of the knee-ankle coupling and unrecognized elongation in Achilles tendon rupture: effects of differential elongation of the gastrocnemius tendon.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
backgroundFollowing Achilles tendon rupture, tendon elongation leads to long term deficits in calf function. A surrogate measure of Achilles tendon length, Achilles tendon resting angle (ATRA), has been described but has not been validated against length measured using ultrasound. Therefore, the purpose of this study was to validate the ATRA against ultrasound. Secondarily, this study aimed to identify the relationship of other factors (tendon mechanical properties, heel-rise test performance) to the ATRA.
methodsIndividuals following unilateral Achilles tendon rupture were included. ATRA was measured in knee flexed and extended positions. Tendon elongation was measured using extended field of view ultrasound imaging. Continuous shear wave elastography quantified tendon mechanical properties. The relationship between variables was tested using Spearman's ρ. Subgroup analysis was used to compare subjects with less then or greater than 1 year following rupture. A total of 42 participants (with a mean of 18.2 months following rupture [SD = 35.9]) were included.
resultsTendon elongation related with relative ATRA with knee flexed (ρ = .491, P = .001) and knee extended (ρ = 0.501, P = .001) positions. In individuals greater than 1 year following rupture, relative ATRA with the knee flexed related to shear modulus (ρ = .800, P = .01) and total work on the heel-rise test (ρ = -.782, P = .008) relative to the uninjured side.
conclusionRelative ATRA in both knee flexed and knee extended positions has a moderate relationship to tendon elongation within the first year following rupture. After 1 year, the relative ATRA with knee flexed may be a better indicator of tendon elongation and also related to tendon mechanical properties and heel-rise test performance. LEVEL OF EVIDENCE: Level III, case-control study.
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