相关实验视频
Updated: Jan 29, 2026

05:05
Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
Published on: November 23, 2019
8.4K
在使用 Postoperative 3D-CT 使用的 Infrapatellar,Suprapatellar 和 Lateral Parapatellar 方法中比较爪入口点位置
Takahiko Ichikawa1, Suguru Yokoo1, Yukimasa Okada1
1Department of Orthopaedic Surgery, Fukuyama City Hospital, Hiroshima 721-8511, Japan.
Life (Basel, Switzerland)
|January 28, 2026
概括
在骨骨折方面,侧侧甲方法导致指甲的侧侧和远端进口比下甲和上甲方法更大. 这些几何差异对于手术规划至关重要,特别是在近端骨折中.
科学领域:
- 整形外科手术 整形外科手术
- 生物医学工程 生物医学工程
- 放射学 放射学是一门学科.
背景情况:
- 轴骨折很常见,通常用内钉钉治疗.
- 错位可能是并发症,特别是在近端甲状腺骨折时.
- 了解不同手术方法中指甲入口点的三维 (3D) 几何特征至关重要,但仍然不清楚.
研究的目的:
- 为了比较指甲入口点的3D几何特征在骨骨折使用侧侧 (LPA),下 (IPA) 和上 (SPA) 手术方法.
- 分析中侧面和斜面平面的入口点.
- 提供数据,可以为外科技术提供信息,并减少错位.
主要方法:
- 在68名AO/OTA型42骨骨折患者的回顾性研究中,用内指甲治疗了42骨骨折.
- 手术方法包括LPA (n=31),IPA (n=27) 和SPA (n=10).
- 术后CT扫描用于重建3D图像,并测量中侧插入比和从关节表面的斜腰距离 (r).
主要成果:
- 中侧插入比在各组之间有显著差异 (p < 0.0001). 与IPA (51.0%) 和SPA (49.0%) 相比,LPA方法导致更多的侧入 (44.0%).
- 斜臂距离 (r) 也有显著的差异 (p < 0.0001),LPA显示出比IPA (9.7毫米) 和SPA (10.5毫米) 更遥远的入口 (14.8毫米).
- 在两种平面上,IPA和SPA之间没有发现显著差异.
结论:
- 与IPA和SPA方法相比,LPA方法导致明显更多的侧面和远部爪入口点.
- IPA和SPA方法在入口点几何学上没有显示出统计学上显著的差异.
- 这些3D-CT发现强调了选择方法优化指甲位置的重要性,特别是在近端骨折中.
相关概念视频
Accessory Structures of the Skin: Nails
3.3K
Nails are one of the important accessory structures of the skin. They are hard, protective structures that cover the dorsal surface of the distal phalanges of fingers and toes. Nails are composed of specialized keratinized cells and serve various functions, including protection, sensation, and manual dexterity.
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
3.3K
The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.0K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.0K
Lateralization
1.0K
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
1.0K
Location and Orientation of the Heart
9.9K
The human heart, despite its modest size and weight, is an organ of remarkable strength and endurance. Roughly the size of a fist, the heart weighs between 250 and 350 grams and is nestled within the mediastinum, the medial cavity of the thorax. It extends obliquely for about 12 to 14 cm, resting on the superior surface of the diaphragm. The heart is positioned anterior to the vertebral column and posterior to the sternum, with two-thirds of its mass lying to the left of the midsternal line.
9.9K
Perceiving Loudness, Pitch, and Location
973
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
973
Selected Data About Geographic Locations
271
Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
271

