Early rehabilitation after open repair for patients with a rupture of the Achilles tendon

PurposeAs outdoor activities participation increase, Achilles tendon rupture incidence also tends to increase. There are a number of treatment and rehabilitation options for a ruptured Achilles tendon. However, the optimal rehabilitation protocols are still under debate. The purpose of this study is to determine whether early rehabilitation is more effective than conventional rehabilitation.MethodsMedical records of 56 patients who had been treated with open repair after a ruptured Achilles tendon were retrospectively reviewed. 24 patients were treated postoperatively with below knee cast immobilization for four weeks, and they started tolerable weight-bearing rehabilitation at four weeks’ follow-up. The remaining 32 patients were managed postoperatively with short leg splint immobilization for two weeks and started the tolerable weight-bearing at two weeks’ follow-up. We evaluated the patients several times to identify when the single heel raise was possible and measured the American Orthopedic Foot and Ankle Society (AOFAS) scores and Achilles tendon total rupture scores (ATRS) as a functional outcome.ResultsThe single heel raise test was positive in all patients at the last assessment. But there were no statistically significant differences between the groups (p = 0.137). The patients in the Cast group took significantly more time to return to work than did the patients in the Splint group (p = 0.032). And AOFAS scores and ATRS were slightly higher in the Splint group than in the Cast group. There were statistically significant differences (p = 0.042, p = 0.028) between the two groups.ConclusionThe early rehabilitation did not lead to greater endurance, but it showed better results in the return to work and the Achilles functional score. Early rehabilitation after open repair for patients with a ruptured Achilles tendon is helpful for functional recovery.Type of study / Level of evidence: Therapeutic, Level III.     

Patient reported outcomes and ankle plantarflexor muscle performance following gastrocnemius recession for Achilles tendinopathy: A prospective case-control study

BackgroundProspective studies to guide the application of a gastrocnemius recession for Achilles tendinopathy are limited. Our aim was to prospectively evaluate patient reported outcomes and muscle performance.MethodsPatients with unilateral recalcitrant Achilles tendinopathy who received an isolated gastrocnemius recession (n = 8) and a healthy control group (n = 8) were included. Patient reported outcomes, ankle power during walking and stair ascent, and the heel rise limb symmetry index (total work) were collected.ResultsImprovements in pain and self-reported function were observed (six months and two years). Sport participation scores reached 92% by two years. Patients demonstrated lower ankle power during stair ascent and decreased limb symmetry during heel rise six months following treatment (p ≤ .02).ConclusionsStudy findings regarding long-term improvements in patient pain, self-reported function and sport participation, and early preservation of ankle function during walking, can help refine patient selection, anticipated outcomes, and rehabilitation strategies.     

Long-term follow-up after acute achilles tendon rupture — Does treatment strategy influence functional outcomes?

BackgroundPatients struggle to fully recover after an Achilles tendon rupture. Although several studies has investigated surgical and non-surgical treatment, the best treatment is still uncertain. The aim of this study was to investigate long-term patient-reported outcomes and objective measures 4 years after acute Achilles tendon rupture and compare whether outcomes differed between patients treated on basis of the previous regimen preferring surgical treatment and the new regimen preferring functional rehabilitation.MethodsAchilles tendon Total Rupture Score (ATRS), number of re-ruptures and the objective measures; Achilles tendon resting angle, calf circumference, heel-rise height, and muscle endurance were measured at a 4-year follow-up. Patients were recruited from Aalborg University Hospital.ResultsSeventy-six patients were included (29% female). The mean ATRS was 71.4 (95% CI: 65.8 to 77.1) at 4 years follow-up. No difference in ATRS was observed between Previous regimen and New regimen at any timepoint (time x group interaction, (p = 0.851). The injured side was still significantly impaired compared with the non-injured side in terms of all objective measures. Impairments in objective measures were not dependent on the preferred treatment strategy.ConclusionsPatient reported impairments and objective functional deficits persist 4 years after an acute Achilles tendon rupture. No differences in patient reported outcome or objective measures at the 4 years follow-up was observed between the old treatment regimen preferring surgery compared with the new treatment regimen preferring functional rehabilitation.     

The influence of an orthopaedic walker boot on forefoot force

BackgroundIn the treatment of an Achilles tendon rupture the patients are commonly equipped with an orthopaedic walker boot with wedges. To what extent this influences the tensile force placed on the Achilles tendon is unclear.PurposeTo assess the forefoot force and describe changes in muscle activity of the medial gastrocnemius, soleus and tibialis anterior when using one or three wedges during ambulation in a weightbearing orthopaedic walker boot.MethodsThe force on the forefoot was measured with a force sensor insole and muscle activity of the medial gastrocnemius, soleus and tibialis anterior were measured using surface electromyography in 10 healthy participants. Three different types of ambulation were performed (walking without crutches (unass.), walking with crutches (+crutch) and walking with crutches and verbal instructions to place body weight on heel (heel + crutch) with one and three heel wedges respectively.FindingsThe total peak force displayed an interaction where forefoot force decreased when wearing three wedges only for the +crutch ambulation type (80 N, p = 0.001) although there was a trend to decrease with three wedges also for the heel + crutch ambulation type (48 N, p = 0.05). The relative peak force on the forefoot showed a main effect with a significant decrease when using three wedges compared to one wedge across all three ambulation types (19.1%, p = 0.009).InterpretationThe force on the forefoot and hereby the Achilles tendon significantly decreased when using three wedges compared to one wedge. These findings have important implications for the rehabilitation post Achilles tendon rupture.     

Predictors of functional outcome in non-operatively managed Achilles tendon ruptures

Background

Acute Achilles tendon (AT) rupture management remains debatable but non-operative functional regimes are beginning to gain popularity. The aim of this study was to identify predictors of functional outcome in patients with AT ruptures treated non-operatively with an immediate weight bearing functional regime in an orthosis.

Outcomes of open “crown” type v. percutaneous Bunnell type repair of acute Achilles tendon ruptures. Randomized control study

BackgroundThe optimal treatment of acute Achilles tendon ruptures (AATR) is still under debate. The purpose of this study was to evaluate outcomes of open repair comparing with percutaneous procedure for AATR.Methods100 patients with AATR were randomized in two groups: open “crown” type (group A) and percutaneous Bunnell type repair (group B). 87 patients were available for the mean follow up of 27 monthsResultsNo statistically significant difference was observed between groups in ATRS score, leg circumference, single heel rise, Achilles resting angle, time back to work and sports and overall patient satisfaction. Percutaneous technique was much faster. Overall 13 complications occurred in both groups (5 and 8 respectively). No deep infection occurred, no revisions were needed.ConclusionsBoth techniques showed to be effective and safe when using absorbable suture material with a high patient satisfaction and a low complication rate, but percutaneous repair was significantly faster.     

Treatment outcome at 1 year did not differ between use of cast or walker in the first 3 weeks after an acute Achilles tendon rupture. A registry study of 1304 patients from the Danish Achilles tendon database

BackgroundThe best choice of orthosis in the treatment of acute Achilles tendon rupture is still under debate.ObjectiveTo investigate if choice of orthosis in the first 3 weeks of treatment affected patient reported outcome (Achilles tendon Total Rupture Score (ATRS)), tendon elongation (Achilles Tendon Resting Angle (ATRA) and Heel Rise Height (HRH)) and re-rupture.MethodsRegistry study in the Danish Achilles tendon Database. Patients treated with cast and patients treated with walker in the first 3 weeks of treatment were compared using a linear mixed-effects model adjusted for potential confounders.Results1304 patients were included in the study. No clinically relevant difference was found: Adjusted mean difference (using walker the whole period as reference)(95% CI) ATRS after 1 year = 0.1(?3.0; 4.1), ATRS after 6 months = 2.0(?4.5; 5.8), ATRS after 2 years = 3.0(?0.7; 7.0), HRH difference = 0.6(?6.6; 8.2), ATRA difference = 0.03°(?1.5; 1.6), re-rupture(odds ratio) = 0.812(0.4; 1.61).ConclusionPatients treated with cast the first 3 weeks after acute Achilles tendon rupture did not have better treatment outcome than patients treated with walker.     

Closing the gap on Achilles tendon rupture: A cadaveric study quantifying the tendon apposition achieved with commonly used immobilisation practices

The relative benefits of surgical and conservative treatment of Achilles tendon rupture are widely debated. With modern conservative management protocols, the re-rupture risk appears to fall to one similar to surgical repair with negligible loss of function. Conservative management typically employs a period of time in an equinus cast with sequential ankle dorsiflexion in a functional orthosis. The optimal duration of immobilisation and rate of dorsiflexion is unknown. We aimed to quantify the change in Achilles tendon approximation achieved in common immobilisation techniques to assist the design of rehabilitation protocols.Twelve fresh-frozen cadaveric specimens had 2.5 cm of Achilles tendon excised. The gap between the tendon ends were measured via windowed full equinus casts and compared with functional boots with successively removed heel wedges.The greatest tendon apposition was achieved with the equinus cast. Each wedge removed decreased the reapproximation by approximately 5 mm.This paper supports the early use of maximal equinus casting in early management of acute Achilles tendon ruptures.     

Reliability of Achilles Tendon Resting Angle and Calf Circumference measurement techniques

BackgroundThe resting angle of the ankle joint may be altered following apparently successful management of Achilles tendon rupture. The reliability of the Achilles Tendon Resting Angle and Calf Circumference measurements was determined.MethodsThree test–retest measurements for reliability assessment were performed on 16 healthy subjects: 10 males and 6 females.ResultsThe mean left Achilles Tendon Resting Angle was mean 50.1° (range [26–61]), ICC 0.92 (CI [0.83–0.97]), SEM 2.4°. The mean right Achilles tendon resting angle was mean 49.9° (range [26–60]), ICC 0.91 (CI [0.80–0.96]), SEM 2.6°. The mean left calf circumference was mean 38.5 cm (range [33.3–44.2]), ICC 0.97 (CI [0.94–0.98]), SEM 0.6 cm, and the mean right calf circumference was mean 38.4 cm (range [33.3–43.6]), ICC 0.97 (CI [0.94–0.99]), SEM 0.5 cm.ConclusionsThe Achilles Tendon Resting Angle and Calf Circumference at 15 cm from the antero-medial joint line had excellent test–retest reliability. These are simple, quick and inexpensive measurements, which have the potential to correlate with tendon elongation and functional outcome. The Achilles tendon resting angle may be used as a guide to tendon length during intra-operative repair and rehabilitation     

Is open acute Achilles tendon rupture repair still justified? A single center experience and critical appraisal of the literature

IntroductionAcute Achilles tendon ruptures are injuries with multiple treatment strategies with possibly far reaching consequences. Open repair is associated with a high complication rate, whereas percutaneous techniques are associated with higher re-rupture rates. The goal of this study was to evaluate the clinical outcome and economic burden of open surgical repair and define a medically and economically sound treatment protocol for acute Achilles tendon ruptures.MethodsBetween June 2012 and December 2016 one hundred and five patients with an acute Achilles tendon rupture, treated in an open surgical manner, were studied retrospectively. All demographic, clinical and hospital-related costs were retrieved from the electronic patient database. ATRS questionnaires were sent to assess the functional outcome. A response rate of 70.5% was achieved.ResultsWe recorded a complication rate of 40%, respectively sural nerve hypoesthesia (14.3%), delayed wound healing (28.6%), infection (20.9%) and re-rupture (4.8%). Surgical resident, as primary operating surgeon was associated with a higher complication rate (p = 0.042). Overall, a median functional ATRS score of 17 (IQR 6.5–39.5) was recorded. Infection was associated with significantly higher total healthcare costs per patient as compared to re-rupture (€17,435 vs. €4,537, p = 0.013). The total cost for surgical debridement (n = 6) was approximately 5-times higher than for re-rupture (n = 5), €108,382 vs. €22,272. The median ATRS score for surgical debridement after infection and re-rupture did not differ significantly from the overall ATRS score, respectively 32 (IQR 21–63) and 28 (IQR 15–28). Nevertheless, a difference of 10 points is considered clinically relevant.ConclusionThe overall functional outcome of open repair of Achilles tendon ruptures is rather good, however associated with a high complication rate, mainly due to wound problems and infection. Although several risk factors were identified, only the operating surgeon is modifiable. Considering the high total costs for surgical debridement in the context of infection compared to re-rupture surgery, despite equal functional outcome,we decided to change clinical practice to reduce the complication rate and healthcare costs. The outcome and precise costs for percutaneous repair will be addressed.     

Functional outcome of early weight bearing for acute Achilles tendon rupture treated conservatively in a weight-bearing orthosis

BackgroundThe optimal management for Achilles tendon (AT) ruptures is controversial and still continues to encourage debate. Conventionally, operative repair was favoured secondary to its lower rates of re-rupture, however in more recent years, we have seen promising results and a reduction in complications with conservative management. One reason for this improvement may be due to the introduction of a functional weight-bearing orthosis, however, results for complete AT ruptures is still unclear. This study aims to evaluate the functional outcomes of early weight bearing in a functional orthosis for conservatively managed, complete AT ruptures.MethodologyThis study was done at East Kent Hospital University Foundation Trust in between 2019?2020. In this prospective study, we have analysed data from 41 patients with US diagnosed compete AT ruptures, with a gap less than 5 cm. Every patient was treated in a functional weight-bearing orthosis (VACOped®) for 8 weeks with early weight-bearing following a specific treatment protocol, followed by rehabilitation with a trained physiotherapist. All patients received a final follow-up at 1 year post injury, where we recorded the following functional outcome measurements on each leg: calf girth, single leg heel raise height, single leg heel raise repetitions and the ATRS score.ResultOur study population was predominantly male with an average age of 50 (range 22?79). The majority of the cohort were physically active, with more than 75% involved in a form of sporting activity pre-injury and 15% involved in higher level activity and competitive sport. The mean ATRS score was 82.1, with a re-rupture rate of only 2%. The average calf bulk difference was 1.6 cm, average heel raise height difference was 1.8 cm and a heel raise repetition difference of 6. There was a statistically significant correlation between ATRS score and calf muscle girth (p = 0.02). However, there was no significant correlation between ATRS score and heel raise height or single heel raise repetitions.ConclusionEarly weight-bearing in a functional orthosis provides excellent functional outcomes for conservatively managed, complete AT ruptures, and is associated with very low re-rupture rates. However, a multidisciplinary approach with a guided rehabilitation programme is essential for optimising functional outcome.     

Flexor hallucis longus tendon transfer for chronic Achilles tendon rupture. A retrospective study

BackgroundThe transfer of Flexor Hallucis Longus Tendon (FHL) is an established method for the treatment of chronic Achilles tendon ruptures. An extensive examination of power, strength, endurance and complications related to this procedure is presented.Methods21 patients treated with open FHL transfer for chronic Achilles tendon rupture were studied retrospectively. Medical records were reviewed. The patients were examined with a test battery for triceps surae strength, functional tests and PROMs.ResultsThe median maximal concentric strength was equal,1300 vs 1336 W, comparing affected with unaffected side. The endurance tests showed a larger difference, 219 J vs. 2398 J, respectively. The median AOFAS score was 87. 11 of 21 patients sustained one or more complications; the most common were infection, disturbed wound healing, and clawing of small toes.ConclusionsPatients achieve almost normal maximal strength after open FHL transfer, but endurance is notably lower. The complication rate was high.     

Chronic Achilles tendon rupture reconstructed using hamstring tendon autograft

BackgroundChronic rupture of the Achilles tendon (delayed diagnosis of more than 4 weeks) can result in retraction of the tendon and inadequate healing. Direct repair may not be possible and augmentation methods are challenging when the defect exceeds 5–6 cm, especially if the distal stump is grossly tendinopathic.MethodsWe describe our method of Achilles tendon reconstruction with ipsilateral semitendinosis autograft and interference screw fixation in a patient with chronic rupture, a 9 cm defect and gross distal tendinopathy.ResultsPatient reported outcome measures consistently demonstrated improved health status at 12 months post surgery: MOXFQ-Index 38–25, EQ5D-5L 18–9, EQ VAS 70–90 and VISA-A 1–64. The patient was back to full daily function, could single leg heel raise and was gradually returning to sport. No complications or adverse events were recorded.ConclusionReconstruction of chronic tears of the Achilles tendon with large defects and gross tendinopathy using an ipsilateral semitendinosis autograft and interference screw fixation can achieve satisfactory improvements in patient reported outcomes up to 1 year post-surgery.     

A novel repair method for the treatment of acute Achilles tendon rupture with minimally invasive approach using button implant: A biomechanical study

BackgroundMinimally invasive Q3 repair has been proposed for acute Achilles tendon rupture with low rate of complications. However there are still controversies about optimal technique. In this study we aimed to describe Endobutton-assisted modified Bunnell configuration as a new Achilles tendon repair technique and evaluate its biomechanical properties comparing with native tendon and Krackow technique.Methods27 ovine Achilles tendons were obtained and randomly placed into 3 groups with 9 specimens ineach. The Achilles tendons were repaired with Endobutton-assisted modified Bunnell technique in group 1, Krackow suture technique in group 2 and group 3 was defined as the control group including native tendons. Unidirectional tensile loading to failure was performed at 25 mm/min. Biomechanicalproperties such as peak force to failure (N), stress at peak (MPa), elongation at failure, and Young'smodulus (GPa) was measured for each group. All groups were compared with each other using one-wayANOVA followed by the Tukey HSD multiple comparison test (a = 0.05).ResultsThe average peak force (N) to failure of group 1 and group 2 and control group was 415.6 ± 57.6, 268.1 ± 65.2 and 704.5 ± 85.8, respectively. There was no statistically significant difference between native tendon and group 1 for the amount elongation at failure (p > 0.05).ConclusionsRegarding the results, we concluded that Endobutton-assisted modified Bunnell technique provides stronger fixation than conventional techniques. It may allow early range of motion and can be easily applied in minimally invasive and percutaneous methods particularly for cases with poor quality tendon at the distal part of rupture.Level of evidenceLevel II, Biomechanical research study.     

An anatomical and cadaveric study examining the risk of sural nerve injury in percutaneous Achilles tendon repair using the Achillon device

BackgroundPercutaneous Achilles tendon repairs are gaining in popularity. This study aims to quantify the risk of sural nerve injury when using the Achillon device.MethodsThe Achillon device was instrumented into 15 cadaveric specimens and through dissection the rate of sural nerve puncture and the position of the sural nerve in relation to the Achilles tendon was documented.ResultsThe sural nerve was found lateral to the Achilles tendon insertion point over a range of 14.3 mm and crossed the lateral border of the Achilles tendon over a range of 57.7 mm.The sural nerve was punctured a total of 6 times and in 4 out of 15 cadaveric specimens (27%). Four out of the 6 punctures occurred when the Achillon device was instrumented distally.ConclusionsThe sural nerve displays a highly variable anatomical course and there is a risk of puncture during percutaneous Achilles tendon repair using the Achillon device.     

Risk factors for achilles tendon rupture: A matched case control study

PurposeThe purpose of this study was to elucidate whether body mass index (BMI), activity level, and other risk factors predispose patients to Achilles tendon ruptures.Materials and methodsA retrospective review of 279 subjects was performed (93 with Achilles tendon rupture, matched 1:2 with 186 age/sex matched controls with ankle sprains). Demographic variables and risk factors for rupture were tabulated and compared.ResultsThe rupture group mean BMI was 27.77 (95% CI, 26.94–28.49), and the control group mean BMI was 26.66 (95% CI, 26.06–27.27). These populations were found to be statistically equivalent (p = 0.047 and p < 0.001 by two one-sided t-test). A significantly higher proportion of those suffering ruptures reported regular athletic activity at baseline (74%) versus controls (59%, p = 0.013).ConclusionThere was no clinically significant difference found in BMI between patients with ruptures and controls. Furthermore, it was found that patients who sustained ruptures were also more likely to be active at baseline than their ankle sprain counterparts.     

The effect of foot type on the Achilles tendon moment arm and biomechanics

BackgroundThe aim was to calculate the Achilles tendon moment arm in different degrees of plantarflexion for pes planus, pes cavus and normal arched feet.Methods99 patients (99 radiographs; 40 males, 59 females; mean age 49 years, SD 15) with a healthy ankle joint and a preoperative weightbearing lateral radiograph of the foot were included. Three groups (pes planus, pes cavus and normal-arched feet) with equal sample sizes (n = 33) were formed. On radiographs, the angle formed between a horizontal line and the line connecting the insertion of the Achilles tendon with the center of rotation of the ankle, was measured. The interrater reliabilities (ICC) of the angle alpha were compared on radiographs and on MRIs. Using the angle alpha, the Achilles tendon moment arm was calculated in different plantarflexion positions.ResultsThe ICC of alpha was higher on radiographs (0.84, [0.73–0.91]) than on MRIs (0.61, [0.27–0.81]). The average alpha was statistically significantly different (normal arched foot 31 degrees (°), pes planus 24°, pes cavus 36°, p = 0.021), resulting in a significant shorter Achilles tendon moment arm for pes cavus than for pes planus (p < 0.0001) and normal arched feet (p = 0.006) in neutral position.ConclusionThe data suggests that it is feasible to use radiographs to measure the Achilles tendon moment arm. The maximum Achilles tendon moment arm is reached at different angles of ankle flexion for pes cavus, pes planus and normal-arched feet. This has to be taken into consideration when planning surgeries.     

Validation and cross-cultural adaptation of Greek version of Achilles tendon Total Rupture Score

Background

The purpose of this study was the translation, cross-cultural adaptation and validation of the Achilles Tendon Total Rupture Score (ATRS) in Greek population.