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4 mm Locking Cannulated Screw Surgical Technique

More frequently, cannulated screws with threads made for porous bone have larger diameters, wider spaces between the threads, and relatively narrow inner shafts. They are made to fix softer bone, so they have a larger surface area for the bone to grip because of this.

Percutaneous techniques, in which a surgical procedure is carried out through puncture holes in the skin rather than making a large open incision, are made possible by cannulated screws. When the thigh bone’s ball-shaped head fractures off at the neck, the narrow point where it connects to the shaft, this kind of surgery may be used to treat the injury. To make sure that the head of the thigh bone has not had its blood supply cut off and will remain alive after the screws have secured it in place, the procedure can only be used in cases where the broken bone is still in place.

Different Types of Screws including 4 mm Locking Cannulated Screw

Locking Cortical Screws

• 2 mm Locking Cortical Screws
• 2.4 mm Locking Cortical Screws
• 2.7 mm Locking Cortical Screws
• 3.5 mm Locking Cortical Screws
• 5 mm Locking Cortical Screws

Cortical Screws

• 1.5 mm Cortical Screws
• 2 mm Cortical Screws
• 2.4 mm Cortical Screws
• 2.7 mm Cortical Screws
• 3.5 mm Cortical Screws
• 4.5 mm Cortical Screws

Locking Cancellous Screws

• 3.5 mm Locking Cancellous Screw
• 4 mm Locking Cancellous Screw
• 5 mm Locking Cancellous Screw
• 6.5 mm Locking Cancellous Screw

Cancellous Screws

• 3.5 mm Cancellous Screw
• 4 mm Cancellous Screw
• 6.5 mm Cancellous Screw

Locking Cannulated Screws

• 4 mm Locking Cannulated Screw
• 5 mm Locking Cannulated Screw
• 6.5 mm Locking Cannulated Cancellous Screw
• 7.3 mm Locking Cannulated Cancellous Screw

Cannulated Screws

• 3.5 mm Cannulated Screws (Cortical Thread)
• 4 mm Cannulated Cancellous Screws
• 4.5 mm Cannulated Cancellous Screws
• 6.5 mm Cannulated Cancellous Screws
• 7 mm Cannulated Cancellous Screws
• 7.3 mm Cannulated Cancellous Screws

Headless Screws Full Thread

• 2.5 mm Headless Compression Screws Full Thread
• 3 mm Headless Compression Screws Full Thread
• 3.5 mm Headless Compression Screws Full Thread
• 4 mm Headless Compression Screws Full Thread
• 4.5 mm Headless Compression Screws Full Thread
• 5 mm Headless Compression Screws Full Thread
• 5.5 mm Headless Compression Screws Full Thread
• 6.5 mm Headless Compression Screws Full Thread

Headless Screws Partially Thread

• 2.5 mm Headless Compression Screws Partially Thread
• 3 mm Headless Compression Screws Partially Thread
• 3.5 mm Headless Compression Screws Partially Thread
• 4 mm Headless Compression Screws Partially Thread
• 4.5 mm Headless Compression Screws Partially Thread
• 5.5 mm Headless Compression Screws Partially Thread
• 6.5 mm Headless Compression Screws Partially Thread
• 7.5 mm Headless Compression Screw Partially Thread

Interlocking Nail Screws

PFNA2 Blades

PFNA Blades

• 8 mm Proximal Cannulated Bolt
• 6.4 mm Proximal Cannulated Bolt
• 4.9 mm Locking Bolts
• 3.9 mm Locking Bolts
• 3.4 mm Locking Bolts

Interference Screws

• 5 mm Interference Screw
• 6 mm Interference Screw
• 7 mm Interference Screw
• 8 mm Interference Screw
• 9 mm Interference Screw
• 10 mm Interference Screw

Herbert Screws

• 2.5 mm Cannulated Herbert Screws
• 3 mm Cannulated Herbert Screws
• 3.5 mm Cannulated Herbert Screws
• 4.5 mm Cannulated Herbert Screws
• 5.5 mm Cannulated Herbert Screws
• 6.5 mm Cannulated Herbert Screws

Craniomaxillofacial Screws

• 1.5 mm Screw Craniomaxillofacial
• 2 mm Screw Craniomaxillofacial
• 2 mm Locking Screw Craniomaxillofacial
• 2.5 mm Screw Craniomaxillofacial
• 2.5 mm Locking Screw Craniomaxillofacial
• 2.8 mm Screw Craniomaxillofacial
• 2.8 mm Locking Screw Craniomaxillofacial
• 2.7 mm Emergency Screw

Malleolar Screws

• 3.5 mm Malleolar Screws
• 4.5 mm Malleolar Screws

The most popular orthopedic implants are bone screws. For various types of bones, there are numerous screw types and sizes. Stainless steel or titanium alloys are the most common materials used to make bone screws. Determined by the screw’s outer diameter, root diameter, thread pitch, and angle.

In orthopedics, screws are typically described by their outer diameter; for instance, a “4 mm Locking Cannulated Screw” has an outer diameter of 4 mm. The linear distance covered by a screw during one complete turn is known as the pitch of a screw. The screw advances by a distance equal to the distance between the threads with each full turn. Cortical screws have fewer threads per inch and a lower pitch. Due to the weaker bone, cancellous bone screws have a deeper screw to increase the surface area and enhance the screw’s purchase.

Screws work by converting the tightening torque into internal tension in the screw and elastic responses in the surrounding bone. This causes compression between the fracture fragments that the screw is holding together. Usually, screws are inserted into holes that have been drilled to the same diameter as the root and are either self-tapping or have been tapped (threaded) beforehand. Cortical bone screws must be properly inserted into the proper size drilled hole and built to withstand the high insertion torque levels typical of cortical bone. Large, deep threads on cancellous bone screws allow them to securely fasten the spongy bone. The cancellous bone has a relatively low strength, so failure of the screw during insertion is uncommon, but pull out can be problematic.

4 mm Locking Cannulated Screw Risk Factor

When assessing the prognosis in each case, contraindications—which may be partial or complete—must be taken into account. To select the most suitable device and treatment, one must rely on the physician’s education, training, and professional judgment. Conditions that increase the likelihood of failure include:

• any infection, whether latent or active, or any obvious local inflammation in or near the affected area.
• compromised vascularity that would prevent the fracture or the surgical site from receiving enough blood.
• bone stock that has been damaged by illness, infection, or previous implantation and cannot support or fix the devices properly.
• sensitive material, whether known or suspected.
• Obesity. A patient who is obese or overweight can place loads on the implant that could cause the device’s fixation to fail or the device itself to malfunction.
• Patients with insufficient tissue over the surgical site.
• Using implants in a way that could affect how well certain bodily functions or structures work.
• any mental or neuromuscular condition that poses an unacceptably high risk of fixation failure or postoperative complications.
• Other medical or surgical issues that would prevent surgery’s potential benefits.
• Every associated disease that might jeopardize the success and functionality of the 4 mm Locking Cannulated Screw.

Warnings and Precautionary for 4 mm Locking Cannulated Screw

The surgeon and support staff should read the safety instructions in this document as well as any product-specific information in the product description, surgical techniques, and/or brochures before using the 4 mm Locking Cannulated Screw.

Screws are designed, built, and produced with the utmost care using materials of the highest quality for medical use. If these high-quality screws are used properly, they guarantee the best working outcomes. As a result, the usage guidelines and safety advice below must be followed.

The incorrect use of a screw can result in injury to the operator, patients, or other people as well as tissue damage, premature wear and tear, instrument destruction, and instrument destruction.

The operating surgeon must actively participate in the medical care of their patients. The surgeon must have a complete understanding of the instruments, their limitations, and the surgical procedure. The surgeon and the surgical team are responsible for exercising caution in the selection and use of surgical instruments. Before using implants, adequate surgical training should be obtained.

Factors that could harm the operation’s success include:

• allergies to materials implanted.
• regional bone tumors.
• osteomalacia or osteoporosis.
• metabolic disturbances and systemic disease.
• drug and alcohol abuse.
• Excessive shock-producing physical activity that exposes the implant to blows and/or heavy loads.
• Patients who lack the mental capacity to comprehend and follow instructions from a doctor.
• Unhealthy overall.
• Potential Negative Effects

The most frequent side effects following implantation are as follows:

• screw loosening that may be caused by the implant’s tissue reaction or by the fixation site’s repeated loading.
• the two stages of infection.
• additional bone fracture brought on by abnormal stress or weakened bone structure.
• a hematoma or pressure-related pressure that causes temporary or permanent neural damage.
• Hematomas from wounds and slow wound healing.
• Venous thrombosis, pulmonary embolism, and cardiac arrest are examples of vascular disease.
• heterotopically ossifying.
• Due to the 4 mm Locking Cannulated Screw’s presence, there is pain and discomfort.
• Implant mechanical failure, such as bending, loosening, or breakage.
• Implant migration leading to injury.

Preoperative Planning for 4 mm Locking Cannulated Screw

Following a thorough clinical evaluation of the patient, the operation is planned. X-rays are also necessary to provide a clear picture of the bony anatomy and any associated deformities. A complete size of 4 mm Locking Cannulated Screw and the corresponding implantation tools must be on hand at the time of the procedure.

The potential risks and complications related to the use of implants should be discussed with the patient by the clinician. If the patient has allergies to any of the implant materials, it is crucial to know this before surgery. Additionally, the patient needs to be made aware that the device’s performance cannot be guaranteed because problems may reduce its lifespan.

4 mm Locking Cannulated Screw Precautions

During reprocessing, verify that the instruments are functional and look for wear. Before using, replace any worn-out or broken instruments.

It is advised to use the tools designated for this screw.

Use caution when handling equipment, and put used bone-cutting tools in a sharps container.

Always use suction and irrigation to remove any debris that may be produced during implantation or removal.

4 mm Locking Cannulated Screw Warnings

Locking 4 mm Cannulated During use, a screw may break (if excessive forces are applied). We advise that the broken part be removed whenever possible and practical for the particular patient, though the surgeon will ultimately decide whether to do so based on the risk involved. Be aware that implants lack the natural bone’s strength. Significant loads may cause implants to fail.

The user’s glove or skin may be pinched or torn by the sharp edges or moving joints of some instruments, screws, and cut plates.

Be sure to get rid of any fragments that weren’t fixed during surgery.

While the surgeon will ultimately decide whether to remove the implant, we advise that fixation devices be taken out as soon as it is safe and practical for the specific patient and after their purpose as a healing aid has been fulfilled. To prevent refracture, implant removal should be followed by adequate post-operative care.

4 mm Locking Cannulated Screw General Adverse Events

There are risks, side effects, and adverse events associated with all major surgical procedures. While there are many possible reactions, the following are some of the most frequent ones: issues related to anesthesia and patient positioning (such as nausea, vomiting, dental injuries, neurological impairments, etc.), thrombosis, embolism, infection, damage to nerve and/or tooth roots or other critical structures, such as blood vessels, excessive bleeding, damage to soft tissues, including swelling, abnormal scar formation, functional impairment of the musculoskeletal system, and pain.