6.5 mm Headless Compression Screw

6.5 mm Headless Compression Screw

6.5 mm Headless Compression Screw Specification

  • Headless design: Headless design of 6.5 mm Headless Compression Screw allows the screw implantation in and around articular regions with minimal soft tissue irritation or risk of interference.
  • Cannulated, for accurate insertion: Cannulated design facilitates accurate percutaneous insertion with minimal soft tissue damage.
  • Gradual compression through variable thread pitch: The wider thread pitch at the tip of the screw penetrates the bone faster than the finer trailing threads, compressing the two fragments gradually as the screw is advanced.
  • Fully threaded: Fully threaded screw provides a higher holding force resulting in increasing stability.
  • Sharp cutting flutes: Sharp cutting flutes in the screw tip facilitate screw insertion.
  • Two types of screws, Fully threaded, Partially threaded.
  • 6.5 mm Headless Compression Screw available in both Titanium and Stainless Steel.
  • 6.5 mm Headless Compression Screw available sizes are 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm and 120mm.
  • Any additional length of this screw will be made on demand.
  • Instruments are available for this screw such as Bone Taps, Combined Drill & Tap Sleeve, Counter Sink, Depth Gauge, Drill Bits, Drill Guide, Drill Sleeve, Hollow Mill Screw Removal, Reverse Measuring Device, Screw Drivers and Screw Holding Forceps etc.
  • This is Self Tapping Screw. Self Tapping Screws cuts its own thread while being driven into the bone. It makes a small hole while entering the bone which creates a tight friction fit between the threads. This helps fight vibration loosening and allows the parts to be taken apart if needed.
  • Sterile and non-sterile packaging options available for Headless Compression Screws

6.5 mm Headless Compression Screw Uses

Headless Compression Screws Uses

Headless Compression Screws Uses 2

Headless Compression Screws are designed to be used in bone reconstruction, osteotomy, arthrodesis, joint fusion, fracture repair and fracture fixation of bones appropriate for the size of the device.

6.5 mm Headless Compression Screw is intended for bone fixation of the hand and foot flowing trauma or osteotomy. Self ­Tapping and reverse cutting flutes on both ends of the screw aid with insertion and removal. Tapered profile gaining compression and maximizing pull-out strength along its entire length.

6.5 mm Headless Compression Screw is used for fusions, fractures, or osteotomies of the clavicle, humerus, radius, ulna, ilium, femur, patella, fibula, tibia, talus, malleolus, and calcaneus.

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6.5 mm Headless Compression Screws Surgical Techniques

1.  PATIENT POSITIONING
Position the patient in a semi-lateral position utilizing a bean bag body positioner. The patient should be moved to the distal end of the bed and the operative leg draped free as the side up. Exertion of the operative limb should be checked prior to prep and drape to confirm that
the operative limb can be positioned on the mini c-arm during surgery.

2.  INDICATION AREA OUTLINE
The base of the fifth metatarsal is outlined, including the insertions of the peroneus brevis and tertius tendons.

3.  APPROACH AND EXPOSURE
The guide wire, .062″, for the 4.7 Screw can be positioned at the base of the fifth metatarsal under fluoroscopic guidance. A small incision is made at the base of the fifth metatarsal at the intersection of the peroneus brevis and tertius tendons. Care is made to identify and protect the sural nerve branches which run over the peroneal tendons. If necessary, fibers of the lateral aponeurosis and peroneus brevis tendon are separated and retracted away from the styloid process of the base of the fifth metatarsal. A mini Hohman Retractor is placed on the plantar
aspect of the base of the fifth metatarsal. The surgeon’s fingers can be used to reduce the fifth metatarsal fracture by placing them in between the fourth and fifth metatarsals. This closes down the fifth metatarsal fracture site during guide wire, drill, and screw placement. A guide wire is drilled from the base of the fifth metatarsal into the central portion of the metatarsal shaft. It is maintained within the intramedullary canal in order to avoid distal penetration. Confirm placement with fluoroscopy.

4.  MEASURE DEPTH
Depth is measured from the exposed portion of the guide wire with the cannulated depth gauge.

5.  ADVANCE GUIDE WIRE
After selecting the size, advance the guide wire approximately 5 mm to maintain distal pin fixation before drilling.
Caution: Make sure not to compromise distal joint surfaces when advancing the guide wire.

6.  SOFT TISSUE GUIDE PLACEMENT
Place the soft tissue guide (the guide should be used throughout) over the guide wire and open the near cortex using the appropriate cannulated profile drill.

7.  DRILL
Leaving the soft tissue guide in place, drill into the far fragment with the appropriate cannulated, long drill. Reference the markings on the drill to confirm desired depth.
Tip: The long drill is recommended to mitigate the effects of varying bone density and distraction upon screw insertion.

8.  FRACTURE COMPRESSION
In order to account for countersinking and fracture compression, a screw that measures 5 mm shorter than the measured total depth is inserted over the guide wire while protecting the soft tissues with a soft tissue guide.

9.  SCREW INSERTION
The screw is placed while under fluoroscopic guidance in order to avoid cortical penetration. Postoperative protocol: The patient is placed into a soft dressing, supported by a fiberglass splint. Patients can be made non-weight-bearing for a period of 2–6 weeks postoperatively depending upon Torg type of fracture, bone quality, and underlying morbidities.

1. Patient Positioning

Headless Compression Screws Surgical Techniques 14

2. Indication Area Outline

Headless Compression Screws Surgical Techniques 15

3. Approach and Exposure

Headless Compression Screws Surgical Techniques 16

4. Measure Depth

Headless Compression Screws Surgical Techniques 17

5. Advance Guide Wire

Headless Compression Screws Surgical Techniques 18

6. Soft Tissue Guide Placement

Headless Compression Screws Surgical Techniques 19

7. Drill

Headless Compression Screws Surgical Techniques 20

8. Fracture Compression

Headless Compression Screws Surgical Techniques 21

9. Screw Insertion

Headless Compression Screws Surgical Techniques 22

Different Types of Screws including 6.5 mm Headless Compression 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
  • 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 Screw

  • 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
  • 4 mm Cannulated Herbert Screws
  • 5 mm Cannulated Herbert Screws

DHS-DCS Screws

  • DHS Lag Screws
  • DCS Lag Screws
  • DHS Compression Screws
  • DCS Compression Screws

Malleolar Screws

  • 3.5 mm Malleolar Screws
  • 4.5 mm Malleolar Screws

Bone screws are the most commonly used orthopedic implants. There are many different types and sizes of screws for different types of bones. Most bone screws are made out of stainless steel or titanium alloys. The outer diameter, root diameter, and thread pitch and angle are important in determining screw mechanics.

In orthopedics, screws are typically described by their outer diameter, for example, a “6.5 mm Headless Compression Screw” has an outside diameter of 6.5 mm. The pitch of a screw is the linear distance travelled by a screw for one full turn of the screw. The screw advances by a distance equal to the distance between the threads with each full turn. Cortical screws have a lower pitch and therefore more number of threads. Cancellous bone screws have a greater depth of the screw to increase the surface area and therefore improve the purchase, as the bone is weaker.

Screws function by converting the tightening torque into internal tension in the screw and elastic reactions in the surrounding bone. This creates compression between the fracture fragments that the screw is holding together. 6.5 mm Headless Compression Screw is typically inserted into holes drilled equal to the root diameter and are either self-tapping or are inserted tapped (threaded) holes. The torque to insert cortical bone screws can be high, so the screws must be properly inserted into the correct size drilled hole and designed to withstand insertion torque levels expected in cortical bone. Cancellous bone screws have large, deep threads that grip the spongy bone well. Because of the relatively low strength of the cancellous bone, failure of the screw itself during insertion is rare, but pull out can be an issue.