Top videos

Vaginal Hysterectomy
Vaginal Hysterectomy M_Nabil 29,083 Views • 2 years ago

Vaginal Hysterectomy utilizing the PlasmaSeal Open Forceps presented by Kristi Keil, MD.

Myomectomy with the Mobius elastic retractor
Myomectomy with the Mobius elastic retractor M_Nabil 12,059 Views • 2 years ago

This patented device replaces cumbersome metal retractors for a variety of surgical procedures. The surgeon has maximum unobstructed exposure and the size of the required incision is minimized.

From axons to tracts
From axons to tracts Mohamed 21,085 Views • 2 years ago

The complex circuitry interconnecting different areas in the brain, known collectively as white matter, is composed of millions of axons organized into fascicles and bundles. Upon macroscopic examination of sections of the brain, it is difficult to discern the orientation of the fibers. The same is true for conventional imaging modalities. However, recent advancements in magnetic resonance imaging (MRI) make such task possible in a live subject. By sensitizing an otherwise typical MRI sequence to the diffusion of water molecules it is possible to measure their diffusion coefficient in a given direction1. Normally, the axonal membrane and myelin sheaths pose barriers to the movement of water molecules and, thus, they diffuse preferentially along the axon2. Therefore, the direction of white matter bundles can be elucidated by determining the principal diffusivity of water. The three-dimensional representation of the diffusion coefficient can be given by a tensor and its mathematical decomposition provides the direction of the tracts3; this MRI technique is known as diffusion tensor imaging (DTI). By connecting the information acquired with DTI, three-dimensional depictions of white matter fascicles are obtained4. The virtual dissection of white matter bundles is rapidly becoming a valuable tool in clinical research.

Our journey begins with a transverse section of tightly packed axons as seen through light microscopy. Although represented as a two-dimensional "slice", we see that these axons in fact resemble tubes. A simulation of water molecules diffusing randomly inside the axons demonstrates how the membranes and myelin hinder their movement across them and shows the preferred diffusion direction --along the axons. The tracts depicted through DTI slowly blend in and we ride along with them. As we zoom out even more, we realize that it is a portion of the corpus callosum connecting the two sides of the brain we were traveling on and the great difference in relative scale of the individual axons becomes evident. The surface of the brain is then shown, as well as the rest of the white matter bundles--a big, apparently chaotic tangle of wires. Finally, the skin covers the brain.

With the exception of the simulated water molecules, all the data presented in the animation is obtained through microscopy and MRI. Computer algorithms for the extraction of the cerebral structures and a custom-built graphics engine make our journey through the brain's anatomy possible in a living person.

Micrograph courtesy of Dr. Christian Beaulieu, University of Alberta.
Music by Mario Mattioli.

References:
1. Stejskal, E.O., et al., J. Chem. Phys., 1965. 42:
2. Beaulieu, C., NMR Biomed., 2002. 15:435-55.
3. Basser, P.J., et al., J. Magn. Reson. B, 1994. 103:247-54.
4. Mori, S., et al., NMR Biomed., 2002. 15:468-80.

Pediatric Plastic Surgery
Pediatric Plastic Surgery M_Nabil 13,541 Views • 2 years ago

This video is a collection of selected cases of Plastic Surgery performed on children with congenital deformities.

Errata: Cleft Lip Case 2 has a center photo which belongs to case 1 at day of surgery.

Trabeculectomy Surgery for Glaucoma, Animation.
Trabeculectomy Surgery for Glaucoma, Animation. Surgeon 64 Views • 2 years ago

This video is available for instant download licensing here: https://www.alilamedicalmedia.....com/-/galleries/all-
©Alila Medical Media. All rights reserved.
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All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
Trabeculectomy, also called Filtration Surgery, is a surgical procedure performed for treatment of glaucoma. The treatment involves removing part of the trabecular meshwork and creating a new escape route for the aqueous humor. When successful, it allows the aqueous fluid to drain from the eye into an area underneath the conjunctiva where it is subsequently absorbed by the body's circulatory system or filtered into tears.
In this procedure:
- A conjunctival pocket is created and maybe treated with Mitomycin or other antimetabolites for a few minutes. These drugs are used to prevent scarring of the operation site. Scarring, if occurs, may clog the new drainage canal, and is therefore the major reason the procedure may fail.
- A half thickness flap is then made in the sclera and is dissected all the way to the clear cornea.
- A block of scleral tissue including part of the trabecular meshwork and Schlemm's canal is then removed to make a hole into the anterior chamber of the eye.
- As the iris may plug up this hole from the inside, a piece of the iris maybe removed at this time. This is called iridectomy.
- The scleral flap is then sutured loosely back in place. These sutures can be released gradually during a couple of weeks after surgery. This allows adjustment of the aqueous flow in order to achieve target pressure and to avoid the complication of having a too low intraocular pressure.
- The conjunctiva is sewn back in place to cover the area.
After surgery, aqueous humor drains into a filtering area called a "bleb" under the conjunctiva. Since the surgery is usually performed near the top of the eye, the bleb can easily be concealed behind the upper eyelid.

Indirect Inguinal Hernia Repair
Indirect Inguinal Hernia Repair DrHouse 69,678 Views • 2 years ago

Right indirect (Gilbert II)inguinal hernia has been repared using PHSe prosthetic device

3D ultrasound of IUD in uterus
3D ultrasound of IUD in uterus Scott 32,945 Views • 2 years ago

3D ultrasound of IUD in uterus

Funny commercial - Hospital
Funny commercial - Hospital hooda 96 Views • 2 years ago

Veryyyyy funny!

Artificial Skin
Artificial Skin samer kareem 1,863 Views • 2 years ago

Yannas had been studying collagen, a protein found in human skin. Teaming up during the 1970s, the two made a polymer (a chemical compound made of multiple repeating units). Using collagen fibers and a long sugar molecule, they formed a porous (full of small holes) material resembling skin.

Hyperopia Animation
Hyperopia Animation DrHouse 11,334 Views • 2 years ago

This animated video reviews hyperopia, or farsightedness.

Disc Prolapse
Disc Prolapse Doctor 14,847 Views • 2 years ago

Herniated or Ruptured Disc: Between each of the vertebre of the spine is a disc which is filled with a gel type material to cushion the connection between the vertebre. With age or injury these intervertebral discs can rupture or herniate. This herniation causes them to push against the adjacent nerves which come from the spinal cord. This can frequently cause pain, numbenss and tingling. This animated video reviews herniated disc.

Open Colectomy without Sutures or Significant Blood Loss
Open Colectomy without Sutures or Significant Blood Loss DrHouse 13,877 Views • 2 years ago

Dr. David Rivadeneira from Stony Brook University in Stony Brook, NY will host a panel discussion on how to obtain improved outcomes during open surgery through the application of advanced techniques and technologies, including the new LigaSure Impact™ instrument. "It provides excellent and reliable hemostasis on major blood vessels, but the big advancement is that it is faster than traditional techniques and leaves no foreign material behind."

The program will begin with a brief introduction of the topic, followed by video presentation of two procedures, a right hemicolectomy and a sigmoid colectomy. Dr. Rivadeneira will discuss the techniques that he uses. "You'll be able to see the impact of applying multifunctional energy-based instruments to enable rapid and reliable dissection of the mesentery and ligation of colonic blood supply. This is particularly evident on tough diverticular cases, where it works very well with complicated tissue." Joining Dr. Rivadeneira, to review and discuss the cases, will be Dr. Sang Lee from Weill Cornell Medical College, NY.

Septoplasty
Septoplasty samer kareem 7,635 Views • 2 years ago

Septoplasty (SEP-toe-plas-tee) is a surgical procedure to correct a deviated septum — a displacement of the bone and cartilage that divides your two nostrils. During septoplasty, your nasal septum is straightened and repositioned in the middle of your nose.

Deep Dermal Suture
Deep Dermal Suture DrPhil 17,536 Views • 2 years ago

Demonstration of deep dermal suturing technique for laceration repair or wound closure in the operating room.

Hip resurfacing with Zimmer Durom hip
Hip resurfacing with Zimmer Durom hip A.K. Venkatachalam 11,430 Views • 2 years ago

Video shows a Hip resurfacing operation done using the Durom hip from Zimmer.
The patient is a young active male. Hip resurfacing is emerging as the surgical procedure of choice in young and active patients for pain relief from Hip arthritis.

Ear Lobe Repair
Ear Lobe Repair samer kareem 1,891 Views • 2 years ago

Earlobe surgery or repair is a reconstructive plastic surgery procedure performed to restore the appearance of earlobes that have been torn or stretched due to ear tearing, trauma, or piercing, including the insertion of ear gauges. This can also be called earlobe reconstructive surgery or split earlobe repair .

82 Years Old Woman Pregnant For 40 Years
82 Years Old Woman Pregnant For 40 Years hooda 19,670 Views • 2 years ago

Watch that video of 82 Years Old Woman Pregnant For 40 Years

Bowel Surgery for IBD
Bowel Surgery for IBD samer kareem 3,764 Views • 2 years ago

This animation describes surgery for patients with inflammatory bowel disease (IBD) -- IPAA, removal of colon, intestinal resection, & stricturoplasty.

Surgical Procedure for Hypertrophic Cardiomyopathy (HCM)
Surgical Procedure for Hypertrophic Cardiomyopathy (HCM) samer kareem 13,879 Views • 2 years ago

Alcohol septal ablation (ASA, TASH, Sigwart procedure) is a percutaneous, minimally-invasive treatment performed by an interventional cardiologist to relieve symptoms and improve functional status in severely symptomatic patients with hypertrophic cardiomyopathy (HCM) who meet strict clinical, anatomic and physiologic ...

Anatomy of Anterior Abdominal Wall
Anatomy of Anterior Abdominal Wall Anatomy_Videos 8,971 Views • 2 years ago

Anatomy of Anterior Abdominal Wall

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