Calot's Triangle
Calot's Triangle - Related Videos
01:29
Trigonometry of Right Triangles
0 Views •
2025
In a right triangle, trigonometric functions establish specific ratios that describe the relationship between the lengths of the triangle's sides and its acute angles. These relationships are foundational in understanding the structure of right-angled geometry. The sine function quantifies the proportion of the side opposite a given angle compared to the triangle's hypotenuse. In contrast, the cosine function expresses how the side adjacent to the angle relates to the hypotenuse in terms of...
01:30
Binomial Expansion Using Pascal's Triangle
0 Views •
2025
Expanding a binomial expression such as (a + b)n results in a predictable sequence of terms that can be systematically derived using Pascal’s Triangle. This triangular array of numbers plays a central role in understanding and computing the coefficients of binomial expansions.Pascal’s Triangle is constructed such that each row corresponds to the coefficients of a binomial raised to a power. The topmost row, known as the zeroth row, corresponds to (a + b)0, and each successive row gives the...
05:24
Full-Endoscopic Trans-Kambin Triangle Lumbar Interbody Fusion: Surgical Technique
0 Views •
2026
Here, we present a protocol to perform full-endoscopic trans-Kambin triangle lumbar interbody fusion (KLIF). The protocol utilizes a posterolateral approach via Kambin’s triangle for safe expandable cage insertion and neural decompression while preserving dorsal facet structure and minimizing soft tissue trauma.
04:02
Laparoscopic Cholecystectomy with Indocyanine Green Fluorescence: Choledochoscopic Stone Extraction and Primary Duct Suture
0 Views •
2025
The integrated technique described in this protocol achieves real-time biliary mapping via indocyanine green (ICG) fluorescence, minimally invasive stone clearance under direct visualization, and secure primary duct repair (6-0 PDS), eliminating T-tube drainage.
03:23
Laparoscopic Anatomical Right Anterior Sectionectomy with a Hepatic Pedicle-first Approach: Technical Details and Representative Case Illustration
0 Views •
2025
This article aims to present a novel Laennec's capsule-guided laparoscopic approach for right anterior sectionectomy, highlighting its potential to improve safety, precision, and reproducibility in complex liver resections.
FAQs
The boundaries assigned to Calot's triangle have changed over time. Its commonly used modern description uses the cystic duct, common hepatic duct, and inferior border of the liver, whereas historical definitions may use different limits. Recognizing this terminology difference helps clinicians interpret surgical literature and communicate anatomical findings accurately during biliary procedures.
The cystic artery, cystic lymph node, and lymphatic vessels typically occupy this space. Their presence gives surgeons useful anatomical landmarks while they identify the structures associated with the gallbladder. Careful assessment is important because nearby biliary and vascular anatomy must be distinguished before the cystic duct or cystic artery is divided.
Correctly recognizing the boundaries and contents of Calot's triangle helps separate the intended cystic structures from nearby major anatomy. This distinction is clinically important because mistaken identification can injure the bile duct or hepatic artery. Anatomical precision therefore supports safer dissection and lowers the risk of serious biliary or vascular complications.
The critical view of safety requires surgeons to clear surrounding tissue in the operative area and confirm the cystic duct and cystic artery before dividing either structure. This verification provides an additional safeguard against misidentification. In laparoscopic cholecystectomy, it turns anatomical recognition into a specific procedural checkpoint before removal of the gallbladder.
During laparoscopic cholecystectomy, the surgeon dissects the region near the gallbladder neck, clears the surrounding tissue, and identifies the cystic duct and cystic artery. The surgeon then obtains the critical view of safety before division. This sequence uses the triangle as a practical anatomical field for controlled identification rather than relying on location alone.
The cystic lymph node and lymphatic vessels are expected components of the space and can serve as additional anatomical reference points during dissection. Their recognition helps the surgeon understand what tissue occupies the field while exposing the cystic structures. They do not replace confirmation of the cystic duct and artery, which remains necessary before division.