Related Experiment Video
Updated: Feb 5, 2026

12:25
C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position
Published on: September 16, 2022
4.6K
Karydakis procedure can be effectively performed in the lateral position.
Marie S De Robles1, Doruk Seyfi1, Assad Zahid1
1Department of Colorectal Surgery, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia.
ANZ Journal of Surgery
|September 22, 2018
Summary
The Karydakis procedure (KP) for pilonidal disease is equally effective in the lateral and prone positions. This study found no significant differences in complication or recurrence rates between the two positions for pilonidal surgery.
Area of Science:
- Surgical Procedures
- Pilonidal Disease Management
- Clinical Outcomes Research
Background:
- The Karydakis procedure (KP) is a surgical technique for pilonidal disease.
- Previous reports indicate low recurrence (<1%) and complication (8.5%) rates for KP.
- This study aimed to compare KP outcomes based on patient positioning.
Purpose of the Study:
- To compare the efficacy and safety of the Karydakis procedure (KP) when performed in the lateral versus the prone position.
- To evaluate differences in complication rates, disease recurrence, operating time, and hospital stay between the two positions.
Main Methods:
- Retrospective analysis of 97 consecutive patients who underwent KP between March 2000 and February 2018.
- Patients with midline sinuses or fistulas extending laterally were considered for contralateral side positioning.
- Data collected included wound complications, disease recurrence, operating time, and length of hospital stay.
Main Results:
- Surgery was performed for primary (73%) and recurrent (27%) pilonidal disease.
- Wound complications occurred in 38% of patients, and disease recurrence in 8%.
- No significant differences were observed between lateral and prone positions regarding wound complications (41% vs. 35%), recurrence (9% vs. 7%), operating time (64.6 vs. 66.6 min), or hospital stay (1 day for both).
Conclusions:
- The Karydakis procedure (KP) can be performed safely and effectively in the lateral position for most pilonidal disease cases.
- Lateral positioning may offer benefits in patient safety, comfort, and operating room efficiency.
- Clinical results support the lateral position as a viable alternative to the prone position for KP.
Related Concept Videos
Lateralization
1.1K
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.
1.1K
Position-effect Variegation
7.1K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
7.1K
Position and Displacement
26.2K
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
26.2K
Serial Position Effect
550
The serial position effect is a cognitive phenomenon where individuals are more likely to recall the first and last items in a list compared to those in the middle. This effect is divided into the primacy effect and the recency effect. The primacy effect is observed when the initial items in a list are remembered better. This occurs because these items are rehearsed more frequently or receive more elaborative processing, allowing them to be encoded into long-term memory more effectively. For...
550
Framing Effects
8.0K
Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
8.0K
Position Vectors
2.0K
A position vector is a fundamental concept in mathematics that helps determine the position of one point with respect to another point in space. It is a vector that describes the direction and distance between two points. Position vectors are highly useful in the field of math and science, as they help represent spatial relationships and make calculations easier.
For instance, we want to locate a point P(x, y, z) relative to the origin of coordinates O. In that case, we can define a position...
For instance, we want to locate a point P(x, y, z) relative to the origin of coordinates O. In that case, we can define a position...
2.0K

