GAIT analysis in patients operated with a novel total ankle prosthesis

Ingrosso, S.; Benedetti, M.G.; Leardini, Alberto; Casanelli, S.; Sforza, T.; Giannini, Sandro

doi:10.1016/j.gaitpost.2009.03.012

Cited by 57 publications

(65 citation statements)

References 22 publications

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“…Similar deterioration of the spatial-temporal parameters and abnormal muscular activation have also been noted more recently [12]. Despite the improved AOFAS scores and function, only 6 months after surgery [13,14], and some restoration of the main gait parameters [15,16], current total ankle arthroplasty does not seem able to re-establish normal joint function fully.…”

Section: Introductionmentioning

confidence: 55%

“…Pre-and post-operative gait data were compared using the Generalized Linear Model (GLM), with the patient as a random effect. Clinical and functional data were also compared to those of a control group [14] consisting of 20 healthy subjects (11 men and 9 women; mean age 27.9 years, range 23-36; mean BMI 21.9, range (18.5-25.0) using the Mann-Whitney test, for not normally distributed or not homoscedastic data, or the one-way ANOVA test otherwise. pValues <0.05 were considered significant.…”

Section: Methodsmentioning

confidence: 99%

“…Whereas gait analysis has already been employed for the functional assessments of patients following arthroplasty [11,12,14] and arthrodesis [6,8], no such objective instrumental investigation has been performed on BFOA. Therefore the aim of this study was to assess traditional clinical outcomes in ten BFOA patients with modern gait analysis, by providing an objective measure of the function of the main lower limb joints.…”

Section: Introductionmentioning

confidence: 99%

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Section: Introductionmentioning

confidence: 55%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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“…To allow recovery of this normal function and good entrapment of the components, nonanatomically shaped articular surfaces of the fixed components and an interposed fully conforming meniscal bearing were designed. Recent additional computer model-based predictions [43], simulator tests [1], measurements on retrievals [2], and gait analysis [27] have provided some evidence of good performance of this prosthesis. Nevertheless, we organized the current multicenter clinical trial to see if improvements occurred with respect to existing devices in (1) flexion at the replaced joint; (2) AOFAS scores; (3) complication rates; and (4) revision rates.…”

Section: Discussionmentioning

confidence: 99%

Total Ankle Replacement Compatible with Ligament Function Produces Mobility, Good Clinical Scores, and Low Complication Rates: An Early Clinical Assessment

Giannini

Romagnoli

O’Connor

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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Background A three-part ankle replacement was developed to achieve compatibility with the natural ligaments by allowing fibers on the medial and lateral sides to remain isometric during passive motion. Unlike all current prostheses, the new design uses nonanatomically shaped components on the tibia and talus and a fully conforming interposed meniscal bearing.Questions/purposes Does this new design restore ankle mobility, improve clinical score, and result in low complication and early revision rates? Patients and Methods We reviewed 51 patients in whom 51 prostheses were implanted in a seven-center trial from July 2003 to July 2006. The mean age of the patients at surgery was 61.5 years (range, 35.1-82.5 years). We used the AOFAS score to assess clinical outcome. We used lateral radiographs to assess function. The minimum followup was 24 months (mean, 30 months; range, 24-48 months). Results The mean preoperative AOFAS score of 38.5 increased to 76.9, 79.1, 76.4, and 79.0 at 12, 24, 36, and 48 months, respectively. We observed a correlation between meniscal bearing movement on the tibial component (mean, 3.4 mm; range, 2-12 mm) and range of flexion at the replaced ankle (mean, 27.48; range, 168-538). We revised one arthroplasty in the second postoperative year for lateral impingement, providing a 3-year cumulative survival rate of 97% and performed one other secondary operation for hindfoot pain. Conclusions These data suggest the new prosthesis can provide short-term restoration of ankle mobility, a good clinical score, and low complication and failure rates. Longer followup with larger numbers is required.

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“…Additionally, it has to be determined if theoretical models are based on subjects with a healthy or replaced joint. It is known that loading at the replaced joint is decreased compared to the healthy joint [46][47][48][49]. For axial loading, a 30% load reduction [46] at the replaced joint compared to the healthy joint was therefore assumed.…”

Section: Tibio-talar Loadingmentioning

confidence: 99%