scholarly journals Slowed-Down Rehabilitation Following Percutaneous Repair of Achilles Tendon Rupture

2021 ◽  
pp. 107110072110385
Author(s):  
Nicola Maffulli ◽  
Nikolaos Gougoulias ◽  
Gayle D. Maffulli ◽  
Francesco Oliva ◽  
Filippo Migliorini
Keyword(s):  
Achilles Tendon ◽  
Functional Outcomes ◽  
Achilles Tendon Rupture ◽  
Rehabilitation Program ◽  
Calf Circumference ◽  
Level Of Evidence ◽  
Traditional Group ◽  
Percutaneous Repair ◽  
Patient Reported ◽  
Group 1

Background: Following percutaneous repair of acute Achilles tendon (AT) ruptures, early postoperative weightbearing is advocated; however, it is debatable how aggressive rehabilitation should be. We compared the clinical and functional outcomes in 2 groups of patients who followed either our “traditional” or a “slowed down” rehabilitation after percutaneous surgical repair. Methods: Sixty patients were prospectively recruited to a slowed down (29 patients) or a traditional (31 patients) rehabilitation program. Both groups were allowed immediate weightbearing postoperatively; a removable brace with 5 heel wedges was applied at 2 weeks. In the slowed-down group, 1 wedge was removed after 4 weeks. Gradual removal of the boot took place after 4 wedges were kept for 4 weeks. In the traditional group, 1 wedge was removed every 2 weeks, with removal of the boot after 2 wedges had been kept for 2 weeks. The AT Resting Angle (ATRA) evaluated tendon elongation. Patient reported functional outcomes were assessed using the AT Rupture Score (ATRS). Calf circumference difference and the isometric plantarflexion strength of the gastro-soleus complex were evaluated. Results: At the 12-month follow-up, both ATRA and ATRS were more favorable in the slowed-down group. The isometric strength and the calf circumference were more similar to the contralateral leg in the slowed-down group than in the traditional one. Conclusion: Following percutaneous repair of acute Achilles tendon patients undergoing slowed down rehabilitation performed better than the traditional one. These conclusions must be considered within the limitations of the present study. Level of Evidence: Level II, prospective comparative study.

scholarly journals FGF gene expression in injured tendons as a prognostic biomarker of 1-year patient outcome after Achilles tendon repair

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Junyu Chen ◽  
Joel Svensson ◽  
Carl-Johan Sundberg ◽  
Aisha Siddiqah Ahmed ◽  
Paul W. Ackermann
Keyword(s):  
Gene Expression ◽  
Patient Outcome ◽  
Achilles Tendon ◽  
Functional Outcomes ◽  
Achilles Tendon Rupture ◽  
Tendon Repair ◽  
Mrna Levels ◽  
Level Of Evidence ◽  
Post Surgery ◽  
Patient Reported

Abstract Purpose Healing outcome after Achilles Tendon Rupture (ATR) is variable and unsatisfactory. Many ATR patients still exhibit pain, functional deficits and limitations in walking one-year post-surgery. The present study was designed to investigate the association between the expression of healing biomarkers and patient outcome after ATR. Methods Tendon biopsies were collected from 25 ATR patients during surgery. At 1-year post surgery, all patients completed questionnaires; Achilles tendon Total Rupture Score (ATRS) and Foot and Ankle Outcome Score (FAOS), and were tested for functional outcomes by heel-rise test. In biopsies, FGF, COL III, FN, COL I and MMP-9 mRNA levels were assessed by quantitative RT-PCR while protein expression was studied by immunohistochemistry (IHC). Results Our analysis confirmed the presence of FGF, COL III, FN, COL I and MMP-9 at mRNA and protein levels in tendon biopsies. FGF gene expression associated positively with improved total ATRS and better functional outcomes. Additionally, FGF mRNA levels were associated with less pain, less running limitations and less loss in physical activity. In addition, higher COL III mRNA expression was associated with more tendon strength. Conclusion Our findings indicate that FGF gene expression is associated with improved patient-reported outcome. FGF expression in surgical biopsies could potentially be used to assist the prognostic evaluation of patient outcome and may be used as a predictor for healing. However, further studies are needed to evaluate the role of FGF in Achilles tendon healing. Level of evidence II

scholarly journals Deep venous thrombosis after Achilles tendon rupture is associated with poor patient-reported outcome

2020 ◽  
Vol 28 (10) ◽  
pp. 3309-3317
Author(s):  
Simon Svedman ◽  
Gunnar Edman ◽  
Paul W. Ackermann
Keyword(s):  
Venous Thrombosis ◽  
Deep Venous Thrombosis ◽  
Achilles Tendon ◽  
Tendon Rupture ◽  
Achilles Tendon Rupture ◽  
Surgical Techniques ◽  
Patient Reported Outcome ◽  
Level Of Evidence ◽  
Significant Difference ◽  
Patient Reported

Abstract Purpose The aim of this study was to investigate whether patient subjective and functional outcomes after Achilles tendon rupture (ATR) are related to deep venous thrombosis (DVT) during leg immobilization. Methods A cohort study with prospectively collected randomized data was conducted between 2010 and 2017. Two-hundred and fifty-one Patients with an Achilles tendon rupture (mean age = 41 ± 8), treated with uniform surgical techniques, were retrospectively analyzed. DVT incidence at 2 and 6 weeks was assessed using compression duplex ultrasound. At 12 months patient-reported outcomes were assessed using the Achilles tendon Total Rupture Score (ATRS), Foot- and Ankle Outcome Score (FAOS), Physical Activity Scale (PAS) and functional outcome with the calf-muscle endurance test. ANOVA analyses were used and adjusted for assumed confounding factors (patient age, sex, BMI and rehabilitation). Results The total DVT incidence was 122 out of 251 (49%). Patients suffering a DVT exhibited significantly lower ATRS at 1 year compared to patients without DVT (mean 76 vs 83, 95% CI 71–79 vs 80–87; p < 0.01). Sixty-seven percent (95% CI 57–77%) of the patients devoid of DVT reported a good outcome (ATRS > 80) compared to 51% (95% CI 41–61%) of the patients sustaining a DVT (p < 0.05). Quality of life displayed significantly better outcome in the non-DVT versus DVT patients (mean = 75 (95% CI 71–79) vs. mean = 68 (95% CI 64–72); p < 0.05). A significant difference in total concentric work was observed between non-DVT and DVT patients (median = 1.9 kJ (IQR = 0.9 kJ) vs. median = 1.6 kJ (IQR = 1.0 kJ); p < 0.01). Conclusion Sustaining a DVT during leg immobilization significantly impairs patient-reported outcome at 1 year after surgical repair of ATR. Level of evidence III.

Performance of the Achilles Tendon Total Rupture Score Over Time in a Large National Database: Development of an Instruction Manual for Accurate Use

2020 ◽  
Vol 48 (6) ◽  
pp. 1423-1429 ◽  
Author(s):  
Maria Swennergren Hansen ◽  
Katarina Nilsson Helander ◽  
Jón Karlsson ◽  
Kristoffer Weisskirchner Barfod
Keyword(s):  
Achilles Tendon ◽  
Achilles Tendon Rupture ◽  
Patient Reported Outcome ◽  
National Database ◽  
Future Research ◽  
Item Score ◽  
Level Of Evidence ◽  
Instruction Manual ◽  
Patient Reported ◽  
The Difference

Background: The Achilles tendon Total Rupture Score (ATRS) is a commonly used patient-reported outcome measure for patients with an acute Achilles tendon rupture. The score consists of 10 questions, the last 3 of which include activities that some patients cannot or do not do. No instruction manual has been developed for the ATRS. Hypothesis/Purpose: The purpose was to evaluate the ATRS at 4, 12, and 24 months after a rupture. The hypothesis was that the results at 4 months would be inconsistent when compared with the results at 1 year and 2 years. We also aimed to develop a manual that explains how to use the ATRS. Study Design: Cohort study (Diagnosis); Level of evidence, 3. Methods: This was a mixed-methods study. The first section was a registry study, where prospectively collected data were analyzed. Data were collected 4, 12, and 24 months after rupture. The original score based on 10 items was compared with a score based on the first 7 items adjusted to the same scale as the original score. Density plots and scatterplots were made and differences between the scores were tested using the Mann-Whitney U test. The second section of the study consisted of discussions among the authors, which resulted in a manual for the ATRS. Results: In total, 2790 complete ATRSs were included. The 7-item score significantly overestimated the value of the 10-item score at all time points ( P < .001), but only at 4 months was the difference clinically relevant (9.7 points). Conclusion: When the ATRS is used for short-term evaluation, there is a risk of results being inconsistent because of the last 3 questions. A manual explaining how to use the ATRS was therefore developed. We recommend that the full ATRS together with the manual should be used in future research rather than eliminating the 3 last questions.

Effect of Platelet-Rich Plasma on Nonsurgically Treated Acute Achilles Tendon Ruptures: A Randomized, Double-Blinded Prospective Study

2020 ◽  
Vol 48 (9) ◽  
pp. 2268-2276 ◽  
Author(s):  
Anders Ploug Boesen ◽  
Morten Ilum Boesen ◽  
Rudi Hansen ◽  
Kristoffer Weisskirchner Barfod ◽  
Anders Lenskjold ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Functional Outcomes ◽  
Platelet Rich Plasma ◽  
Controlled Trial ◽  
Achilles Tendon Rupture ◽  
Exercise Program ◽  
Tendon Healing ◽  
Functional Improvement ◽  
Level Of Evidence ◽  
Time Points

Background: An acute Achilles tendon rupture (ATR) is a long-lasting and devastating injury. Possible biological augmentation to promote and strengthen tendon healing after an ATR would be desirable. Purpose: To determine whether the application of a platelet-rich plasma (PRP) injection in nonsurgically treated ATRs may promote healing and thereby improve functional outcomes. Study Design: Randomized controlled trial; Level of evidence, 2. Methods: A total of 40 men (aged 18-60 years) with an ATR incurred within 72 hours were included, and 38 were followed for 12 months. All patients were treated with an orthosis with 3 wedges for 8 weeks; full weightbearing from day 1 was allowed, combined with either 4 PRP or 4 placebo injections (a few drops of saline, <0.5 mL, under the skin) 14 days apart. All patients received the same instructions on an exercise program starting from week 9. Outcomes included the self-reported Achilles tendon Total Rupture Score (ATRS) as well as heel-rise work, heel-rise height, tendon elongation, calf circumference, and ankle dorsiflexion range of motion. Results: The mean ATRS score improved in both groups at all time points ( P < .001), but there was no difference between the groups at any time points (12 months: 90.1 points in PRP group and 88.8 points in placebo group). No differences in all functional outcomes at any time points were seen between the groups. At 12 months, the injured leg did not reach normal functional values compared with the uninjured leg. Conclusion: The application of PRP in nonsurgically treated ATRs did not appear to show any superior clinical and functional improvement. Registration: NCT02417922 (ClinicalTrials.gov identifier)

High Plantar Force Loading After Achilles Tendon Rupture Repair With Early Functional Mobilization

2019 ◽  
Vol 47 (4) ◽  
pp. 894-900 ◽  
Author(s):  
Susanna Aufwerber ◽  
Annette Heijne ◽  
Karin Grävare Silbernagel ◽  
Paul W. Ackermann
Keyword(s):  
Achilles Tendon ◽  
Tendon Rupture ◽  
Force Measurement ◽  
Achilles Tendon Rupture ◽  
Case Series ◽  
Level Of Evidence ◽  
Force Loading ◽  
Fear Of Movement ◽  
Patient Reported ◽  
Plantar Force

Background: Mechanical loading is essential for tendon healing and may explain variability in patient outcomes after Achilles tendon rupture (ATR) repair. However, there is no consensus regarding the optimal postoperative regimen, and the actual amount of loading during orthosis immobilization is unknown. Purpose: The primary aim of this study was to assess the number of steps and the amount of loading in a weightbearing orthosis during the first 6 weeks after surgical ATR repair. A secondary purpose was to investigate if the amount of loading was correlated to fear of movement and/or experience of pain. Study Design: Case series; Level of evidence, 4. Methods: Thirty-four patients (mean ± SD age, 38.8 ± 8.7 years) with ATR repair were included. Early functional mobilization was allowed postoperatively in an orthosis with adjustable ankle range of motion. During the first postoperative 2 weeks, patient-reported loading and pain were assessed with a visual analog scale and step counts with a pedometer. At the 2- and 6-week follow-up, a mobile force sensor was used for measuring plantar force loading, and the Tampa Scale for Kinesiophobia was used to examine fear of movement. Results: Between the first and second weeks, there was a significant increase in the mean number of daily steps taken (from 2025 to 2753, P < .001) as well as an increase in self-reported loading (from 20% to 53%, P < .001). Patient self-reported loading was significantly associated with the plantar force measurement (rho = 0.719, P < .001). At 6 weeks, loading was 88.2% on the injured limb versus the uninjured limb. Fear of movement was not correlated with pedometer data, subjective loading, pain, or force data. Patients with less pain during activity, however, reported significantly higher subjective load and took more steps ( P < .05). Conclusion: This is the first study to demonstrate the actual loading patterns during postoperative functional mobilization among patients with surgically repaired ATR. The quick improvements in loading magnitude and frequency observed may reflect improved tendon loading essential for healing. Pain, rather than fear of movement, was associated with the high variability in loading parameters. The data of this study may be used to improve ATR rehabilitation protocols for future studies. Registration: NCT02318472 (ClinicalTrials.gov).

scholarly journals Early mobilization does not reduce the risk of deep venous thrombosis after Achilles tendon rupture: a randomized controlled trial

2019 ◽  
Vol 28 (1) ◽  
pp. 312-319 ◽  
Author(s):  
Susanna Aufwerber ◽  
Annette Heijne ◽  
Gunnar Edman ◽  
Karin Grävare Silbernagel ◽  
Paul W. Ackermann
Keyword(s):  
Venous Thrombosis ◽  
Deep Venous Thrombosis ◽  
Achilles Tendon ◽  
Tendon Rupture ◽  
Controlled Trial ◽  
Achilles Tendon Rupture ◽  
Control Group ◽  
Level Of Evidence ◽  
Treatment As Usual ◽  
Patient Reported

Abstract Purpose The hypothesis was that early functional mobilization would reduce the incidence of deep venous thrombosis (DVT) during leg immobilization after Achilles tendon rupture surgery. A secondary aim was to evaluate if the amount of weightbearing and daily steps influenced the risk of sustaining a DVT. Methods One-hundred and fifty patients with Achilles tendon rupture repair were randomized to treatment with early functional mobilization, encouraging full weightbearing and ankle motion in orthosis, or treatment-as-usual, i.e., 2 weeks of unloading in plaster cast followed by 4 weeks weightbearing in orthosis. At 2 and 6 weeks postoperatively, all patients were screened for DVT using compression duplex ultrasound. During the first 2 weeks postoperatively, patient-reported loading, pain and step counts were assessed. Results At 2 weeks, 28/96 (29%) of the patients in early functional mobilization group and 15/49 (31%) in the control group (n.s) had sustained a DVT. At 6 weeks, the DVT rate was 35/94 (37%) in the early functional mobilization and 14/49 (29%) in the control group (n.s). During the first postoperative week, the early functional mobilization group reported low loading and higher experience of pain vs. the control group (p = 0.001). Low patient-reported loading ≤ 50% (OR = 4.3; 95% CI 1.28–14.3) was found to be an independent risk factor for DVT, in addition to high BMI and higher age. Conclusions Early functional mobilization does not prevent the high incidence of DVT during leg immobilization in patients with Achilles tendon rupture as compared to treatment-as-usual. The low efficacy of early functional mobilization is mainly explained by postoperative pain and subsequent low weightbearing. To minimize the risk of DVT, patients should be encouraged to load at least 50% of body weight on the injured leg 1 week after surgery. Level of evidence Therapeutic, level 1

scholarly journals Isokinetic functional outcomes of open versus percutaneous repair following Achilles tendon tears

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0015
Author(s):  
Daniel Baumfeld ◽  
Tiago Baumfeld ◽  
Caio Nery ◽  
Nicola Maffulli
Keyword(s):  
Achilles Tendon ◽  
Functional Outcomes ◽  
Plantar Flexion ◽  
Achilles Tendon Rupture ◽  
Return To Sport ◽  
Isokinetic Testing ◽  
Recreational Athletes ◽  
Percutaneous Repair ◽  
Retrospective Comparative Study ◽  
Open Versus

Category: Sports Introduction/Purpose: Rupture of the Achilles Tendon (AT) is frequent in young recreational athletes. Conservative management, open surgery and percutaneous/minimally invasive approaches are all advocated, and conflicting data are available. This study compared functional and anthropometric outcomes of patients who underwent open or percutaneous repair. Methods: A retrospective comparative study, in which 38 patients underwent open and percutaneous techniques to manage AT ruptures. For functional assessment, the calf circumference of both injured and uninjured legs was evaluated. Isokinetic testing included total plantar flexion work, peak plantar flexion torque, total dorsiflexion work peak and dorsiflexion torque. The Achilles Tendon Rupture Score (ATRS) and the America Orthopedic Foot and Ankle Score (AOFAS) were evaluated at a final minimum follow-up of 12 months. Results: No major complications were observed. The average time to return to sport was 9 months. AOFAS and ATRS values did not differ statistically between groups. Isokinetic variables and circumference were similar in the operated and non-operated limb in both groups, and did not differ either when comparing open and percutaneous repair. Conclusion: Open and percutaneous repair of a torn Achilles tendon produced similar functional outcomes.

A Randomized Controlled Trial Comparing Traditional Plaster Cast Rehabilitation With Functional Walking Boot Rehabilitation for Acute Achilles Tendon Ruptures

2020 ◽  
Vol 48 (11) ◽  
pp. 2755-2764 ◽  
Author(s):  
Julian F. Maempel ◽  
Nick D. Clement ◽  
Andrew D. Duckworth ◽  
Oisin J.F. Keenan ◽  
Tim O. White ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Functional Outcomes ◽  
Controlled Trial ◽  
Achilles Tendon Rupture ◽  
Controlled Clinical Trial ◽  
Delayed Presentation ◽  
Foot And Ankle ◽  
Functional Rehabilitation ◽  
Randomized Controlled ◽  
Patient Reported

Background: There has been a shift toward functional nonoperative rehabilitation in the treatment of Achilles tendon rupture (ATR) despite a shortage of studies directly comparing nonoperative functional rehabilitation with traditional nonoperative immobilization. Purpose: To compare patient-reported outcome measures and functional outcomes for nonoperatively treated ATR with traditional cast immobilization or functional rehabilitation in a walking boot. Study Design: Randomized controlled clinical trial; Level of evidence, 2. Methods: In a single-center nonblinded study, 140 patients were randomized to compare treatment for acute ATR in (1) an immobilizing cast in reducing degrees of equinus over a 10-week period with 8 weeks of nonweightbearing mobilization or (2) a walking boot for 8 weeks with reducing equinus and immediate full weightbearing. Exclusion criteria were delayed presentation >2 weeks after injury, tendon reruptures, and latex allergy. Analysis was undertaken on an intention-to-treat basis. Results: A total of 69 patients (median age, 41 years [interquartile range, 33-50.5 years]) were randomized to walking boot treatment and 71 patients (41 [32-49]) to cast treatment. At 6 months, patients treated in a walking boot reported better Short Musculoskeletal Function Assessment (SMFA) dysfunction index (6.62 [2.21-12.50] vs 10.66 [4.96-13.42]; P = .050), SMFA bother index (7.29 [2.08-14.58] vs 10.42 [5.73-19.27]; P = .04), Achilles Tendon Total Rupture Score (71.5 [53.50-84.25] vs 54.0 [37-76]; P = .01), and Foot and Ankle Questionnaire core score (91 [81.89-97.55] vs 85 [78.25-92.09]; P = .04). At 1 year, there was no difference in SMFA dysfunction index (2.21 [0.74-5.88] vs 2.94 [1.47-6.62]; P = .25), SMFA bother index (2.08 [0-9.38] vs 5.21 [0.52-11.98]; P = .25), Achilles Tendon Total Rupture Score (92 [72.50-96] vs 87.5 [66.0-94.75]; P = .21), or Foot and Ankle Questionnaire core score (97.75 [89.46-99.00] vs 95.50 [90.88-97.50]; P = .18). Rerupture occurred in 5 and 11 patients ( P = .075) and venous thromboembolism in 2 and 3 patients ( P = .67) in the boot and cast groups, respectively. Fifteen patients in the boot group but none in the cast group had skin problems ( P < .001). Patients treated in a boot returned to driving at a median 12 weeks (vs 13 weeks for cast; P = .045), but there was no difference in time to return to work ( P = .48). Conclusion: Functional rehabilitation with early weightbearing is a safe alternative to traditional immobilizing treatment for ATR, giving better early functional outcomes, albeit with a higher incidence of transient minor skin complications. Registration: NCT02598843 (ClinicalTrials.gov identifier).

scholarly journals Defining Components of Early Functional Rehabilitation for Acute Achilles Tendon Rupture: A Systematic Review

2019 ◽  
Vol 7 (11) ◽  
pp. 232596711988407 ◽  
Author(s):  
Jennifer A. Zellers ◽  
Marianne Christensen ◽  
Inge Lunding Kjær ◽  
Michael Skovdal Rathleff ◽  
Karin Grävare Silbernagel
Keyword(s):  
Systematic Review ◽  
Achilles Tendon ◽  
Range Of Motion ◽  
Outcome Measures ◽  
Functional Outcomes ◽  
Tendon Rupture ◽  
Achilles Tendon Rupture ◽  
Whole Body ◽  
Functional Rehabilitation ◽  
Patient Reported

Background: Early functional rehabilitation is frequently discussed in treating Achilles tendon rupture. A consistent definition of what constitutes early functional rehabilitation has not been established across the literature, despite studies supporting its efficacy. A standardized definition would be helpful to pool data across studies, allow for between-study comparisons, and ultimately work toward developing clinical guidelines. Purpose: To define early functional rehabilitation (including when it is initiated and what it entails) when used to treat Achilles tendon rupture and to identify outcome measures for evaluating the effect of treatment. Study Design: Systematic review; Level of evidence, 4. Methods: Ovid MEDLINE, EMBASE, PEDro, CINAHL, and Cochrane databases were searched for relevant studies. Eligibility criteria for selecting studies consisted of randomized controlled trials, cohort studies, and case series (≥10 participants) including weightbearing or exercise-based interventions within 8 weeks after Achilles tendon rupture. Results: A total of 174 studies published between 1979 and 2018 were included. Studies were rated a median (interquartile range [IQR]) of 17 (15-20) on the Downs & Black checklist and included 9098 participants. Early functional rehabilitation incorporated weightbearing (95%), range of motion (73%), and isometric/strengthening exercises (50%). Weightbearing was initiated within the first week, whereas exercise (eg, ankle range of motion, strengthening, whole-body conditioning) was initiated in the second week. Initiation of exercises varied based on whether treatment was nonsurgical (mean, 3.0 weeks; IQR, 2.0-4.0 weeks) or simple (mean, 2.0 weeks; IQR, 0.0-2.3 weeks) or augmented surgical repair (mean, 0.5 weeks; IQR, 0.0-2.8 weeks) ( P = .017). Functional outcomes including ankle range of motion (n = 84) and strength (n = 76) were reported in 130 studies. Other outcome domains included patient-reported outcomes (n = 89), survey-based functional outcomes (n = 50), and tendon properties (n = 53). Conclusion: Early functional rehabilitation includes weightbearing and a variety of exercise-based interventions initiated within the first 2 weeks after acute Achilles tendon rupture/repair. Because early functional rehabilitation has lacked a standardized definition, interventions and outcome measures are highly variable, and pooling data across studies should be done with attention paid to what was included in the intervention and how treatment was assessed.

scholarly journals Older Age Predicts Worse Function 1 Year After an Acute Achilles Tendon Rupture: A Prognostic Multicenter Study on 391 Patients

2018 ◽  
Vol 6 (12) ◽  
pp. 232596711881390 ◽  
Author(s):  
Olof Westin ◽  
Simon Svedman ◽  
Eric Hamrin Senorski ◽  
Eleonor Svantesson ◽  
Katarina Nilsson-Helander ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Patient Reported Outcomes ◽  
Tendon Rupture ◽  
Achilles Tendon Rupture ◽  
Older Age ◽  
Nonsurgical Treatment ◽  
Level Of Evidence ◽  
Patient Reported ◽  
Rise Height

Background: There is limited evidence regarding the patient-related factors that influence treatment outcomes after an acute Achilles tendon rupture. Purpose/Hypothesis: The purpose of this study was to determine the predictors of functional and patient-reported outcomes 1 year after an acute Achilles tendon rupture using a multicenter cohort and to determine patient characteristics for reporting within the top and bottom 10% of the Achilles tendon Total Rupture Score (ATRS) and heel-rise height outcomes. The hypothesis was that older age, greater body mass index (BMI), and female sex would lead to inferior outcomes. Study Design: Cohort study; Level of evidence, 2. Methods: Patients were selected by combining 5 randomized controlled trials from 2 different centers in Sweden. Functional outcomes were assessed using validated heel-rise tests (height, number of repetitions, total work, and concentric power) for muscular endurance and strength, and the relationship between injured and uninjured legs was calculated as the limb symmetry index (LSI). Patient-reported outcomes were measured using the ATRS. All outcomes were collected at the 1-year follow-up. Independent predictors included were patient sex, smoking, BMI, age, and surgical versus nonsurgical treatment. Results: Of the 391 included patients, 307 (79%) were treated surgically. The LSI of heel-rise height at the 1-year follow-up decreased by approximately 4% for every 10-year increment in age (beta, –3.94 [95% CI, –6.19 to –1.69]; P = .0006). In addition, every 10-year increment in age resulted in a 1.79-fold increase in the odds of being in the lowest 10% of the LSI of heel-rise height. Moreover, a nonsignificant superior LSI of heel-rise height was found in patients treated surgically compared with nonsurgical treatment (beta, –4.49 [95% CI, –9.14 to 0.16]; P = .058). No significant predictor was related to the ATRS. Smoking, patient sex, and BMI did not significantly affect the 1-year results for the LSI of the heel-rise tests. Conclusion: Older age at the time of injury negatively affected heel-rise height 1 year after an Achilles tendon rupture. Irrespective of age, a nonsignificant relationship toward the superior recovery of heel-rise height was seen in patients treated surgically. None of the factors studied affected patient-reported outcomes.

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