Does measurement of the anatomic axis consistently predict hip-knee-ankle angle (HKA) for knee alignment studies in osteoarthritis? Analysis of long limb radiographs from the multicenter osteoarthritis (MOST) study.
Does measurement of the anatomic axis consistently predict hip-knee-ankle angle (HKA) for knee alignment studies in osteoarthritis? Analysis of long limb radiographs from the multicenter osteoarthritis (MOST) study.
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DOI：
10.1016/j.joca.2010.09.011
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发表时间：
2011-01
影响因子：
7
通讯作者：
Cooke, T. D. V.
中科院分区：
文献类型：
--
作者：
Sheehy, L.;Felson, D.;Zhang, Y.;Niu, J.;Lam, Y. -M.;Segal, N.;Lynch, J.;Cooke, T. D. V.
研究人员通常使用膝关节X线片的股骨干-胫骨干角（FS-TS）来估计髋-膝-踝角（HKA），以研究膝关节骨关节炎（OA）发病率和进展的风险因素。本研究的目的是确定HKA和FS-TS之间的关系，这取决于计算FS-TS的方法和膝关节畸形的方向和程度。分配了120张全长数字X线片，4个对线组（0. 0 °至4. 9 °，以及≥ 5. 0 °的内翻和外翻）各30张，来自一个大型膝关节骨关节炎患者队列和膝关节骨关节炎风险人群。使用Horizons分析软件（OAISYS Inc.）获得HKA和FS-TS的5个测量值（使用逐渐缩短的轴长度）。计算HKA和不同版本FS-TS之间的偏移，95%置信区间（CI）。计算Pearson相关系数。在内翻肢体中，使用较短的骨干长度将HKA和FS-TS之间的偏心距从5.1°增加到7.0°。外翻肢体的情况相反（从5.0°到3.7°）。HKA和FS-TS之间的相关性为整个样本的120个个体是极好的（r范围1.00至0.88）。然而，各个对线组的相关性为低至中度，尤其是最短轴FS-TS（r范围为0.41至0.66）。使用较短的FS-TS测量值获得的偏心距因膝关节畸形的方向和程度而异，因此可能无法提供可靠的HKA预测值。我们建议在需要准确估计HKA时使用全长X线片，尽管可以使用FS-TS估计广泛的对线类别。
Researchers commonly use the femoral shaft-tibial shaft angle (FS-TS) from knee radiographs to estimate the hip-knee-ankle angle (HKA) in studies examining risk factors for knee osteoarthritis (OA) incidence and progression. The objective of this study was to determine the relationship between HKA and FS-TS, depending on the method of calculating FS-TS and the direction and degree of knee deformity. 120 full-length digital radiographs were assigned, with 30 in each of four alignment groups (0.0° to 4.9°, and ≥ 5.0° of varus and valgus), from a large cohort of persons with and at risk of knee osteoarthritis. HKA and 5 measures of FS-TS (using progressively shorter shaft lengths) were obtained using Horizons Analysis Software, OAISYS Inc. The offsets between HKA and the different versions of FS-TS were calculated, with 95% confidence intervals (CI). Pearson correlations were calculated. In varus limbs use of a shorter shaft length increased the offset between HKA and FS-TS from 5.1° to 7.0°. The opposite occurred with valgus limbs (from 5.0° to 3.7°). Correlations between HKA and FS-TS for the whole sample of 120 individuals were excellent (r range 1.00 to 0.88). However, correlations for individual alignment groups were low to moderate, especially for the shortest-shaft FS-TS (r range 0.41 to 0.66). The offsets obtained using the shorter FS-TS measurements vary depending on direction and degree of knee deformity, and therefore may not provide reliable predictions for HKA We recommend that full-length radiographs be used whenever an accurate estimation of HKA is required, although broad categories of alignment can be estimated with FS-TS.
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影响因子：
--
作者：
Cerejo, R;Dunlop, DD;Sharma, L
通讯作者：
Sharma, L
影响因子：
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作者：
Lawrence, Reva C.;Felson, David T.;Wolfe, Frederick
通讯作者：
Wolfe, Frederick
DOI：
10.1002/art.22618
发表时间：
2007-04-15
期刊：
ARTHRITIS & RHEUMATISM-ARTHRITIS CARE & RESEARCH
影响因子：
--
作者：
Issa, Sakeba N.;Dunlop, Dorothy;Sharma, Leena
通讯作者：
Sharma, Leena
影响因子：
--
作者：
Kraus, VB;Vail, TP;McDaniel, G
通讯作者：
McDaniel, G
DOI：
10.1002/art.21836
发表时间：
2006-04-15
期刊：
ARTHRITIS & RHEUMATISM-ARTHRITIS CARE & RESEARCH
影响因子：
--
作者：
Hinman, RS;May, RL;Crossley, KM
通讯作者：
Crossley, KM