Bonadio Marcelo Batista, Torres Júlio Augusto Do Prado, Mazzaro Vicente, Helito Camilo Partezani, Gobbi Riccardo Gomes, Demange Marco Kawamura
. Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, Instituto de Ortopedia e Traumatologia, Knee Group, São Paulo, SP, Brazil.
Acta Ortop Bras. 2016 May-Jun;24(3):127-30. doi: 10.1590/1413-785220162403158611.
To compare the plateau-patella angle method to the methods already established for patellar height measurement in patients undergoing high tibial osteotomy.
This is a retrospective study of 13 patients undergoing medial opening tibial osteotomy. The patellar height was measured in pre and post-operative radiographs by the methods from Insall-Salvati, Caton-Deschamps, Blackburne-Peel and patella-plateau angle, as well as the tibial slope and length of the patellar tendon. Measurements were performed by two knee surgeons at two different times.
The mean age was 41.33 ± 01.09 years old. The average rates of Caton-Deschamps, Blackburne-Peel, Insall-Salvati and plateau-patella angle were, respectively, 1.00; 0.89; 1.10; and 23.15° preoperatively, and 0.89; 0.78; 1.11; and 20.46°, postoperatively. The correlation of Caton-Deschamps, Blackburne-Pell, and Insall-Salvati indexes and plateau-patellar angle interobserver was 0.72 (p <0.001), 0:54 (p <0.001), 0.65 (p <0.001), and 0.67 (w <0.001), respectively.
The plateau-patella angle method undergoes changes that are correlated with changes in tibial slope after osteotomy, unlike the classical methods. This fact may lead to overestimate the reduction of patellar height after osteotomy. Level of evidence IV. Case Series.
比较在接受高位胫骨截骨术的患者中，髌骨-平台角测量法与已确立的髌骨高度测量方法。
这是一项对13例行内侧开口胫骨截骨术患者的回顾性研究。通过Insall-Salvati法、Caton-Deschamps法、Blackburne-Peel法和髌骨-平台角测量法，以及胫骨斜率和髌腱长度，在术前和术后X线片上测量髌骨高度。测量由两位膝关节外科医生在两个不同时间进行。
平均年龄为41.33±10.09岁。术前Caton-Deschamps法、Blackburne-Peel法、Insall-Salvati法和髌骨-平台角的平均比率分别为1.00；0.89；1.10；和23.15°，术后分别为0.89；0.78；1.11；和20.46°。Caton-Deschamps法、Blackburne-Pell法、Insall-Salvati法指数与髌骨-平台角测量法观察者间的相关性分别为0.72（p<0.001）、0.54（p<0.001）、0.65（p<0.001）和0.67（p<0.001）。
与传统方法不同，髌骨-平台角测量法的变化与截骨术后胫骨斜率的变化相关。这一事实可能导致高估截骨术后髌骨高度的降低。证据等级IV。病例系列。
