关节线倾斜角度受到关节拉伸和拉伸的显著影响:模拟分析
Marco Bechis1, Francesco Liberace1, Antonino Cantivalli2
1Department of Orthopedics and Traumatology, AO Ordine Mauriziano, Torino, Italy.
概括
部拉伸/拉伸显著影响关节直线倾斜角 (JLOA) 测量. 米库利茨关节线角 (MJLA) 是评估关节线斜率的更可靠方法.
科学领域:
- 整形外科手术 整形外科手术
- 放射学 放射学是一门学科.
- 生物力学 生物力学
背景情况:
- 关节线斜率 (JLO) 是膝关节关节分析的一个关键因素.
- 有几种方法可以量化JLO,包括联合线斜角 (JLOA) 和Mikulicz联合线角 (MJLA).
- 了解下肢位置对这些测量的影响对于准确的诊断和治疗规划至关重要.
研究的目的:
- 根据部定位量化JLOA的变化.
- 为了评估下肢绑架和引对JLO测量的影响.
- 为了比较JLOA和MJLA在不同的部位置下的可靠性.
主要方法:
- 对100张长腿承重X射线进行分析.
- 测量包括JLOA,MJLA和部-膝盖-脚角度在各种部位置下 (被绑架,中立,引进).
- 三角度公式和骨科规划软件用于计算.
主要成果:
- 在JLOA中显示,部引和引之间平均有12.8°的显著变化.
- MJLA测量保持稳定,并没有受到部定位的显著影响.
- 该研究表明,下肢绑架/提取对JLOA.有相当大的影响.
结论:
- 下肢提取和提取显著影响JLOA.
- 由于它与部位置的独立性,MJLA是对关节线斜率评估的更可靠方法.
- 整形外科医生在解释JLOA测量时应考虑部位置.
相关概念视频
Bones of the Lower Limb: Femur and Patella
2.3K
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
2.3K
Eccentric Axial Loading in a Plane of Symmetry
175
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
175
Beams with Unsymmetric Loadings
113
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
113
Unsymmetric Bending - Angle of Neutral Axis
288
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
288
Angle of Twist - Elastic Range
279
Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
279
Relative Motion Analysis - Acceleration
343
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
343


