Cross-Cultural Adaptation and Validation of the Foot Function Index for Use in German-Speaking Patients with Foot Complaints

Naal, Florian D.; Impellizzeri, Franco M.; Huber, Martin; Rippstein, Pascal

doi:10.3113/fai.2008.1222

Cited by 94 publications

(93 citation statements)

References 19 publications

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“…Budiman-Mak et al [3,4], for example, defined the ''50 feet walking time test'' as a measure for criterion validity in their first paper on the FFI [4] but as a measure for construct validity in their last paper on the FFI [3]. The SF-36 and the WOMAC [2] also have been used to measure criterion validity [9], whereas the SF-36 was used to evaluate construct validity in another study [30]. We doubt if any generic tool, such as the SF-36, Musculoskeletal Function Assessment (MFA) [10], or Quality Adjusted Life Year (QUALY) [35], could really be considered a gold standard for patients undergoing TAA.…”

Section: Discussionmentioning

confidence: 99%

“…Although, in the meantime, numerous studies broadened its use to the entire spectrum of foot and ankle à positive rating for the pain subscale, negative ratings for the limitation and disability subscales; 0 = no information available; 1 = Level 1 rating; 2 = Level 2 rating; 3 = Level 3 rating; + = positive rating; À = negative rating; MCID = minimal clinically important difference; AOFAS = American Orthopaedic Foot and Ankle Society; FFI = foot function index; AOS = Ankle Osteoarthritis Scale; NJOH = New Jersey Orthopaedic Hospital ankle score; ''Oxford'' = questionnaire developed by the authors, modeled to the validated Oxford Hip Score [7]. disorders, included patient perceptions, and adapted the instrument for use in different languages [1,24,30,36,38,46], several limitations of this instrument have been highlighted, resulting in a recently performed extensive revision of this questionnaire based on Rasch analysis [3]. Although we found reasonable ratings in terms of the different quality criteria for the FFI, the above-mentioned studies resulted in at least five different FFI versions (FFI original, FFI-R long, FFI-R short, FFI-D, FFI-5pt) and its use in patients having TAA, therefore, can be recommended only cautiously.…”

Section: Discussionmentioning

confidence: 99%

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Which Are the Most Frequently Used Outcome Instruments in Studies on Total Ankle Arthroplasty?

Naal

Impellizzeri

Rippstein

2010

Clinical Orthopaedics &Amp; Related Research

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112

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Which Are the Most Frequently Used Outcome Instruments in Studies on Total Ankle Arthroplasty?

Naal

Impellizzeri

Rippstein

2010

Clinical Orthopaedics &Amp; Related Research

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112

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show abstract

“…Neglected misalignment, medial or lateral gutter impingement, component loosening, polyethylene displacement and progressive wear, infection and persistent pain are potential factors that ultimately led to revision operation. 4,30,38 It sounds logical that-whenever possible-the implant should be salvaged and retained. This can be achieved by adding surgeries (eg, osteotomies, ligament reconstructions) 2,6,7,10,12,21,24,35,37 or simple component exchange.…”

Section: (Original) Clinical Research Articlementioning

confidence: 99%

Inferior Results of Salvage Arthrodesis After Failed Ankle Replacement Compared to Primary Arthrodesis

et al. 2014

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BACKGROUND: Up to now, there has been no evidence that salvage arthrodesis would perform inferior when compared with primary ankle arthrodesis. The purpose of this study was to compare their clinical and radiographic results. METHODS: A retrospective analysis was performed using 2 validated scores and assessment of radiographic union by comparing 23 patients who underwent salvage ankle arthrodesis (group SA = salvage arthrodesis) after failed total ankle replacement with 23 matched patients who received primary ankle arthrodesis (group PA = primary arthrodesis). The mean follow-up period was 38 (range 16-92) months in group SA and 56 (23-94) months in group PA. RESULTS: Complete union was achieved in 17 patients (74%) after a mean time of 50 (13-114) weeks in group SA and in 16 patients (70%) after a mean time of 23 (10-115) weeks in group PA. The SF-36 score averaged 48 points (7-80) in SA and 66 points (14-94; P = .006) in group PA. In group SA the mean FFI was 57% (22-82) for pain and 71% (44-98) for function. In group PA significantly better results for pain with 34% (0-88; P = .002) and function with 48% (1-92; P = .002) were found. CONCLUSION: Salvage arthrodesis led to impaired life quality and reduced function combined with significantly higher pain when compared with primary ankle arthrodesis. These findings can be used to counsel our patients preoperatively. LEVEL OF EVIDENCE: Level III, retrospective case series. (Original) Clinical Research ArticleThere is an ongoing debate whether to choose total ankle replacement (TAR) or ankle arthrodesis in the surgical treatment of symptomatic end-stage ankle osteoarthritis. 2,6,7,10,17,21,24,34,37 While contemporary TAR designs, reveal superior and more reliable overall clinical outcomes and low revision rates, 2,11,13,21,27,36 the long-term results are still not yet predictable and do not match those in total kneeand total hip arthroplasty. 1,3,5,17,19,25,32 With an increasing number of patients undergoing TAR the number of patients who will need a revision operation will rise. Neglected misalignment, medial or lateral gutter impingement, component loosening, polyethylene displacement and progressive wear, infection and persistent pain are potential factors that ultimately led to revision operation. 4,30,38 It sounds logical that-whenever possible-the implant should be salvaged and retained. This can be achieved by adding surgeries (eg, osteotomies, ligament reconstructions) 2,6,7,10,12,21,24,35,37 or simple component exchange. 2,9,11,18,20,21,23,27,29,31,36,39 However, there will always be patients who are not amenable to this kind of treatment and conversion to an arthrodesis can be considered.While several studies investigated the radiographic and clinical outcomes after primary ankle arthrodesis, there is a paucity of reports available in the literature that deal with salvage arthrodesis after failed TAR. 2,3,[6][7][8]10,17,21,24,34,37 To the best of our knowledge there has been no comparative analysis performed to assess salvage arthrodesis aft...

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“…Foot Function Index (FFI) [41] (0 -best result, 100 -worst result) improved from 55.0 (SD 19.6) to 24.5 (SD 14.5) in the pain subscale, the function subscale changed from 60.1 (SD 13.7) to 28.1 (SD 21.0). The total FFI showed a significant improvement from 57.9 (SD 13.7) to 26.5 (SD 17.4).…”

Section: The Authors' Resultsmentioning

confidence: 99%

Scaffold Based Reconstruction of Focal Full Thickness Talar Cartilage Defects

Walther¹,

Martin²

2013

Clin Res Foot Ankle

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Most talar cartilage injuries have a traumatic pathogenesis. They occur as a result of a single or repeated traumatic event. Initially only the cartilage may be damaged by shear stress and may heal, remaining asymptomatic. Often the trauma causes microfractures in the subchondral plate and bone and upon loading, water is forced into the damaged subchondral area by the compressed cartilage, leading to a localized increased flow and fluid pressure. This can cause osteolysis and lead to the formation of subchondral cysts. Deep ankle pain on weight bearing, most probably caused by repetitive high fluid pressure will limit the patients mobility and hence quality of life and needs to be treated.We describe an emerging and especially cost-effective scaffold-based reconstruction technique for osteochondral defects of the talus-Autologous Matrix-Induced Chondrogenesis (AMIC ® )-a promising alternative to Matrix-induced Autologous Chondrocyte Implantation (MACI) and other techniques.

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Cross-Cultural Adaptation and Validation of the Foot Function Index for Use in German-Speaking Patients with Foot Complaints

Abstract: The German version of the FFI is a reliable and valid questionnaire for the self-assessment of pain and disability in German-speaking patients with foot complaints.

Cited by 94 publications

References 19 publications

Which Are the Most Frequently Used Outcome Instruments in Studies on Total Ankle Arthroplasty?

Which Are the Most Frequently Used Outcome Instruments in Studies on Total Ankle Arthroplasty?

Inferior Results of Salvage Arthrodesis After Failed Ankle Replacement Compared to Primary Arthrodesis

Scaffold Based Reconstruction of Focal Full Thickness Talar Cartilage Defects

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