Canencio Salgado María Camila, Martínez-Villaba Diego, Bautista María, Amado Pico Omar Alejandro
School of Health Sciences, Universidad Autonoma de Bucaramanga, Bucaramanga, Colombia.
Clinica Foscal - Foscal International, Bucaramanga, Colombia.
Arthroplast Today. 2024 Jul 20;28:101457. doi: 10.1016/j.artd.2024.101457. eCollection 2024 Aug.
Leg length discrepancy following hip arthroplasty causes dissatisfaction to the patient; thus, preoperative planning and implant selection is critical. The purpose of this study was to measure the articular-trochanteric distance (ATD) and femoral neck length (FNL) in our population and compare them to those of 3 of the most used uncemented stems.
In this cross-sectional study, 401 hip radiographs of healthy adults were collected between January and July 2022. The vertical ATD and FNL were measured. A linear regression model was used to identify the relationship between these measurements and age, sex, and height. A logistic regression model was used to assess the matching of native hips with the neck length of the stem.
Mean age was 60 years, and 74.56% were women. In 94.3% of hips, the ATD was negative, 3.73% neutral, and 2% positive. In our population, 0.25% of FNL were shorter than POLARSTEM (Smith & Nephew, UK), 10.72% shorter than MetaFix stem (Corin, UK), and 11.97% shorter than Corail stem (DePuy Synthes, USA). In the logistic regression analysis, matching for the POLARSTEM was associated with age but not with sex or height. Conversely, for MetaFix and Corail, stem matching was associated with sex and height.
Anthropometric hip measurements vary among individuals, and variables such as age, sex, and height must be considered during preoperative planning and implant selection to avoid leg length discrepancy. Additional studies, including different implants, are required to guide surgeons in selecting a femoral stem that best matches the patient's native hip.
髋关节置换术后的肢体长度差异会导致患者不满；因此，术前规划和植入物选择至关重要。本研究的目的是测量我们人群中的关节-大转子距离（ATD）和股骨颈长度（FNL），并将其与3种最常用的非骨水泥型股骨柄进行比较。
在这项横断面研究中，于2022年1月至7月收集了401例健康成年人的髋关节X线片。测量垂直ATD和FNL。使用线性回归模型确定这些测量值与年龄、性别和身高之间的关系。使用逻辑回归模型评估天然髋关节与股骨柄颈长的匹配情况。
平均年龄为60岁，女性占74.56%。在94.3%的髋关节中，ATD为阴性，3.73%为中性，2%为阳性。在我们的人群中，0.25%的FNL比POLARSTEM（英国施乐辉公司）短，10.72%比MetaFix股骨柄（英国Corin公司）短，11.97%比Corail股骨柄（美国捷迈邦美公司）短。在逻辑回归分析中，POLARSTEM的匹配与年龄有关，但与性别或身高无关。相反，对于MetaFix和Corail，股骨柄匹配与性别和身高有关。
人体测量学的髋关节测量值因人而异，在术前规划和植入物选择过程中必须考虑年龄、性别和身高变量，以避免肢体长度差异。需要进行包括不同植入物的进一步研究，以指导外科医生选择最适合患者天然髋关节的股骨柄。
