Morphological Variations and Normal Parameters of the Cross-Sectional Anatomy of the Tibiofibular Syndesmotic.

Foot & ankle specialist Pub Date : 2024-04-01 Epub Date: 2021-11-02 DOI:10.1177/19386400211055274
Seyed Ali Hashemi, Soheil Nosrati, Zahra Shayan, Amir Reza Vosoughi
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Abstract

Background: The aim of this study was to determine morphological variations and normal parameters of the cross-sectional tibiofibular syndesmotic anatomy.

Methods: Configurations of syndesmosis, anterior syndesmotic width (ASW), posterior syndesmotic width (PSW), and overlap distance, defined as the overlap of medial fibula with a drawn line from tip of anterior tubercle of incisura fibularis to the posterior tip, were measured on normal computed tomography (CT) scans of 110 cases. Results: Seventy seven male (70%) and 33 female (30%) (left: 50 and right: 60) were assessed. Mean age of the cases was 33 ± 13 (range: 15-80) years. Three different syndesmotic configurations were crescent (55.5%), rectangular (39.1 %), and semicircle (5.4 %). Overall, mean ASW, PSW, and overlap distance were 2.72, 3.98, and 1.02 mm, respectively. Upper limit of normal ASW in crescent, rectangular, and semicircle was 4.80, 4.85, and 3.89 mm, respectively. The maximum of PSW in crescent, rectangular, and semicircle was 6.25, 6.50, and 4.97 mm, respectively. There was not significant difference between syndesmotic configurations based on age (P = .69) and sex (P = .16).

Conclusions: During interpreting axial CT scan to diagnose syndesmotic injuries, the normal range of parameters according to the different configurations of the tibiofibular syndesmosis should be carefully considered.

Level of evidence: Level 4.

胫腓骨联合截面解剖的形态变化和正常参数。
背景:本研究的目的是确定胫腓联合横断面解剖的形态变化和正常参数:本研究旨在确定胫腓联合横断面解剖的形态变化和正常参数:方法:在 110 例正常计算机断层扫描(CT)上测量胫腓联合的配置、胫腓联合前侧宽度(ASW)、胫腓联合后侧宽度(PSW)和重叠距离(定义为腓骨内侧与从腓骨切迹前结节尖端到后结节尖端的连线的重叠)。结果共评估了 77 例男性(70%)和 33 例女性(30%)(左侧:50 例,右侧:60 例)。病例的平均年龄为 33 ± 13(范围:15-80)岁。三种不同的联合韧带结构分别为新月形(55.5%)、矩形(39.1%)和半圆形(5.4%)。总体而言,平均 ASW、PSW 和重叠距离分别为 2.72、3.98 和 1.02 毫米。新月形、矩形和半圆形的正常 ASW 上限分别为 4.80、4.85 和 3.89 毫米。新月形、矩形和半圆形的 PSW 最大值分别为 6.25、6.50 和 4.97 毫米。年龄(P = .69)和性别(P = .16)在巩膜构型上无明显差异:结论:在解读轴向CT扫描诊断胫腓联合损伤时,应仔细考虑胫腓联合不同构型的正常参数范围:证据等级:4级。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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