The Ankle Spacer—a hemiarthroplasty for treatment of severe osteochondral defects of the talus

Lerch, Matthias; Yao, Daiwei; Ettinger, Sarah; Claaßen, Leif; Plaaß, Christian; Stukenborg-Colsman, Christina

doi:10.1007/s00064-021-00719-6

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…e12 arthroplasty or fusion. We found only one other published study with short-term results, by Lerch et al [3]. In contrast to our results, they reported an increase in the AOFAS (American Orthopedic Foot and Ankle Society) score from 55.5 to 79.5 points and the EFAS (European Foot and Ankle Society) score from 5.6 to 13.5 points, pre-to postoperative.…”

Section: Discussioncontrasting

confidence: 99%

“…Because this device was only registered and introduced into clinical practice in 2016, no mid-to long-term outcome reports have yet been published. There is only one publication presenting the surgical technique and short-term 3-month results [3]. OLTs are joint-surface lesions affecting both parts of the osteochondral unit-the cartilage and its underlying subchondral bone-that may cause debilitating symptoms and, if left untreated, present a risk factor for the development of secondary osteoarthritis [4,5].…”

Section: ____________________________________________________________...mentioning

confidence: 99%

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Partial Ankle Arthroplasty: Talus Resurfacing for Mild-to-Moderate Osteoarthritis and Talus Hemiarthroplasty for Complex Osteochondral Lesions

Žlak,

Kolar,

Mujanović

et al. 2024

Journal of the American Podiatric Medical Association

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Background: To present prospective short-term results of a limited patient series treated with two innovative partial ankle arthroplasties: talar dome resurfacing for mild-to-moderate ankle osteoarthritis (OA) and talar shoulder hemiarthroplasty for chronic medial osteochondral lesions of the talus (OLT). Methods: Eleven subjects underwent talus resurfacing, and six subjects were enrolled for talar hemiarthroplasty. The outcome was followed by patient-reported measures and by pursuing serious adverse events or implant failures over a 2-year period. Progression of ankle osteoarthritis, peri-implant bone changes, and implant migration were followed radiographically. Results: Active dorsiflexion increased from 3° to 10° in resurfacing and from 15° to 22° in hemiarthroplasty. Patient-reported ankle function, quality of life, and activity level tended to improve only slightly after resurfacing (FAOS cumulative = 41 to 42; FAAM-ADL = 43 to 46; EQ-5D 3L = 0.38 to 0.39, Tegner activity scale = 1.6 to 2.0), but moderately after hemiarthroplasty (FAOS cumulative = 58 to 68, FAAM-ADL = 37 to 71, EQ-5D 3L = 0.53 to 0.72, Tegner activity scale = 3.1 to 3.1). No implant-related radiographic changes, implant failures, or implant-related revision surgeries were recorded. Conclusions: Based on a small and heterogeneous prospective case series, both partial ankle implants investigated were safe and stable over a 2-year follow-up period, without any radiographic OA progression of the remaining joint. However, patient-reported ankle function, quality of life, and activity level showed a tendency of only minor improvement after resurfacing but a moderate increase after hemiarthroplasty.

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Section: Discussioncontrasting

confidence: 99%

Section: ____________________________________________________________...mentioning

confidence: 99%

Partial Ankle Arthroplasty: Talus Resurfacing for Mild-to-Moderate Osteoarthritis and Talus Hemiarthroplasty for Complex Osteochondral Lesions

Žlak,

Kolar,

Mujanović

et al. 2024

Journal of the American Podiatric Medical Association

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“…Although they report no signs of component loosening, and no progression toward osteoarthritis, drawing definitive conclusions is not possible given their extremely short follow-up period. 17 The other one, despite having a longer follow-up than the first one, only has 2 patients in its cohort. They reported an improvement from 6 and 7 preoperatively to 2 and 2 postoperatively in the numeric rating scales during walking and substantial improvement in other PROMs such as American Orthopaedic Foot & Ankle Society ankle-hindfoot score, FAOS, and SF-36.…”

Section: Discussionmentioning

confidence: 98%

Short-term Results of Hemiarthroplasty of the Ankle Joint for Talar-Sided Cartilage Loss

Pellegrini

Zuleta

Cortes

et al. 2023

Foot & Ankle Orthopaedics

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Background: Ankle hemiarthroplasty is a 1-piece implant system replacing the talar side of the tibiotalar joint. Hemiarthroplasty offers limited bone resection and may provide easier revision options than joint-ablating procedures. Methods: Prospective, multicenter, noncomparative, nonrandomized clinical study with short term follow-up on patients undergoing hemiarthroplasty of the ankle. Radiologic and functional outcomes (Foot and Ankle Outcome Score FAOS, Foot and Ankle Ability Measure [FAAM], Short Form–36 Health Survey [SF-36], Short Musculoskeletal Functional Assessment [SMFA], and visual analog scale [VAS] pain scores) were obtained at 3 and 12 months and the last follow-up (mean 31.9 months). Results: Ten patients met the inclusion criteria. Three were converted to total ankle replacement at 14, 16, and 18 months. Pain VAS scores improved on average from 6.8 to 4.8 ( P = .044) of the remaining 7 at a mean of 31.9 months’ follow-up. For these 7 in the Survival Group, we found that SF-36 physical health component improved from 25.03 to 42.25 ( P = .030), SMFA dysfunction and bother indexes improved from 46.36 to 32.28 ( P = .001), and from 55.21 to 30.14 ( P = .002) in the Survival Group, and FAAM sports improved from 12.5 to 34.5 ( P = .023). Conclusion: Patients undergoing hemiarthroplasty of the ankle joint for talar-sided lesions had a 30% failure rate by 18 months. Those who did not have an early failure exhibited modest pain reduction, functional improvements, and better quality of life in short-term follow-up. This procedure offers a possible alternative for isolated talar ankle cartilage cases. Level of Evidence: Level IV, prospective case series.

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Evaluation of the new defined EFAS score (European foot and ankle society score) in relation to already established functional scores (FFI, MOXFQ) after cartilage reconstructive therapy (AMIC®) for osteochondral lesion of the talus

Gottschalk

Kerschl

Mazet

et al. 2022

Foot and Ankle Surgery

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The Ankle Spacer—a hemiarthroplasty for treatment of severe osteochondral defects of the talus

Cited by 3 publications

References 24 publications

Partial Ankle Arthroplasty: Talus Resurfacing for Mild-to-Moderate Osteoarthritis and Talus Hemiarthroplasty for Complex Osteochondral Lesions

Partial Ankle Arthroplasty: Talus Resurfacing for Mild-to-Moderate Osteoarthritis and Talus Hemiarthroplasty for Complex Osteochondral Lesions

Short-term Results of Hemiarthroplasty of the Ankle Joint for Talar-Sided Cartilage Loss

Evaluation of the new defined EFAS score (European foot and ankle society score) in relation to already established functional scores (FFI, MOXFQ) after cartilage reconstructive therapy (AMIC®) for osteochondral lesion of the talus

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