McConnell Evan P, Queen Robin M
1 Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
2 Kevin P. Granata Biomechanics Lab, Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA.
Foot Ankle Int. 2017 Feb;38(2):115-123. doi: 10.1177/1071100716672656. Epub 2016 Oct 3.
Functional recovery following total ankle arthroplasty (TAA) is assessed with patient-reported metrics, but physical performance tests may allow for a more accurate assessment of patient function. We quantified correlations between patient-reported measures and physical performance tests in patients after TAA to determine the usefulness of physical performance tests in post-TAA assessment.
In total, 140 patients with end-stage ankle osteoarthritis were assessed prior to TAA and again at 12 and 24 months postoperatively. At each time point, the visual analog scale (VAS), Foot and Ankle Disability Index (FADI), American Orthopaedic Foot & Ankle Society (AOFAS), Short Musculoskeletal Function Assessment (SMFA), and Short-Form 36 (SF-36) scores were collected, as well as walking speed, Four-Square Step Test (FSST) times, and Short Physical Performance Battery (SPPB) balance scores.
All but 1 (SF-36 general health component) of the patient-reported outcomes improved significantly from preoperative assessment to both 1 and 2 years postoperatively ( P < .001 in all cases). Walking speed, FSST times, and balance scores improved significantly across time ( P < .001 in all cases). Walking speed was moderately correlated with total SF-36 scores at both 1 and 2 years postoperatively ( P < .001 in both cases), both components of the SMFA at 1 year postoperatively ( P < .001 in both cases), and total AOFAS scores at 2 years postoperatively ( P = .001).
The lack of strong correlations between the 2 sets of metrics indicates that they provide different information about a patient's recovery following TAA. Therefore, it is important to include both sets of metrics in post-TAA assessments to better understand operative success and functional recovery.
Level IV, cohort study.
全踝关节置换术（TAA）后的功能恢复通过患者报告的指标进行评估，但身体性能测试可能有助于更准确地评估患者功能。我们量化了TAA术后患者报告的测量指标与身体性能测试之间的相关性，以确定身体性能测试在TAA术后评估中的有用性。
总共140例终末期踝关节骨关节炎患者在TAA术前、术后12个月和24个月时接受评估。在每个时间点，收集视觉模拟量表（VAS）、足踝残疾指数（FADI）、美国矫形足踝协会（AOFAS）、简短肌肉骨骼功能评估（SMFA）和简明健康状况调查量表（SF-36）评分，以及步行速度、四方步测试（FSST）时间和简短身体性能量表（SPPB）平衡评分。
除1项（SF-36总体健康成分）外，所有患者报告的结果从术前评估到术后1年和2年都有显著改善（所有病例P <.001）。步行速度、FSST时间和平衡评分随时间显著改善（所有病例P <.001）。术后1年和2年步行速度与总SF-36评分中度相关（两种情况下P <.001），术后1年与SMFA的两个成分中度相关（两种情况下P <.001），术后2年与总AOFAS评分中度相关（P =.001）。
两组指标之间缺乏强相关性表明，它们提供了关于患者TAA术后恢复的不同信息。因此，在TAA术后评估中同时纳入两组指标很重要，以便更好地了解手术成功率和功能恢复情况。
IV级，队列研究。
