Zimmer Biomet Headless Compression and Twist-Off Screws Surgical Technique
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Zimmer Biomet Headless Compression and Twist-Off Screws Surgical Technique

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Headless Compression
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Summary of Contents for Zimmer Biomet Headless Compression and Twist-Off Screws

  • Page 1 Headless Compression and Twist-Off Screws Surgical Technique...

  • Page 3: Table Of Contents

    Headless Compression and Twist-Off Screws Surgical Technique Table of Contents Headless Compression Screw ................2 Incision ........................3 Lateral Release ......................3 Unicortical Applications ................... 4 Osteotomy ......................... 4 K-Wire Placement ....................... 5 Screw Measurement ....................6 Insertion ........................7 Drilling (Optional) .......................

  • Page 4: Headless Compression Screw

    Headless Compression and Twist-Off Screws Surgical Technique Headless Compression Screws 0.9 mm Cobalt Chrome K-Wire T7 Hexalobe Drive Tapered Threads 1.8 mm minor diameter designed for increased strength over prior screw TiMAX ® Titanium Four Cutting Edges 2.5 mm 3.0 mm 10-40 mm (2 mm increments) 10-40 mm (2 mm increments)

  • Page 5: Incision

    Headless Compression and Twist-Off Screws Surgical Technique Headless Compression Screw Technique Figure 1 Figure 2 Incision A 7 cm incision is centered over the dorsal aspect of The following surgical technique describes the use of a Headless Compression Screw for a distal Chevron the first metatarsophalangeal joint, just medial and parallel to the EHL tendon.

  • Page 6: Unicortical Applications

    Headless Compression and Twist-Off Screws Surgical Technique Headless Compression Screw Technique – Unicortical Applications Figure 3a Figure 3 Figure 3b Osteotomy A linear capsulotomy is then used to expose the A medially based long arm Chevron type osteotomy joint. The hypertrophic medial eminence on the 1 is then created from medial to lateral.

  • Page 7: K-Wire Placement

    Headless Compression and Twist-Off Screws Surgical Technique Headless Compression Screw Technique – Unicortical Applications Figure 4 K-Wire Placement The osteotomy is then stabilized in a uni-cortical Tip: When using a screw longer than 28 mm for application, such as a distal Chevron osteotomy, by oblique applications, it may be beneficial to use a 0.9 advancing the 0.9 mm K-Wire across the osteotomy mm x 105 mm k-wire.

  • Page 8: Screw Measurement

    Headless Compression and Twist-Off Screws Surgical Technique Headless Compression Screw Technique – Unicortical Applications 90° degrees 45° degrees 22.5° degrees Figure 5 Screw Measurement The length of the screws is measured using the depth Important: The screw length may vary depending gauge.

  • Page 9: Insertion

    Insertion Drilling (Optional) Load the screw onto the T7 Cannulated Driver and Note: The Zimmer Biomet Headless Compression Mini Rachet Handle. Place screw over the 0.9 mm screws are designed to be self-drilling and self- k-wire down to surface of bone. Advance the screw tapping, and may be inserted under power.

  • Page 10: Bicortical Osteotomy

    K-Wire Placement Drilling (Optional) For bi-cortical applications, such as the Scarf-Z or Note: The Zimmer Biomet Headless Compression Ludloff osteotomy, insert the k-wire until the tip screws are designed to be self-drilling and self- begins to exit the outer wall of the far cortex (Figure 9).

  • Page 11: Insertion

    Headless Compression and Twist-Off Screws Surgical Technique Headless Compression Screw Technique – Bicortical Applications Figure 11 Drilling (Optional) (cont.) Insertion In situations where bi-cortical lagging is required (such Load the screw onto the T7 Cannulated Driver and Mini as a Scarf-Z Osteotomy), use the 2.0 mm Cannulated Rachet Handle.

  • Page 12: Twist-Off Screw

    Headless Compression and Twist-Off Screws Surgical Technique 10 | Twist-Off Screws Expanded shaft length over previous design for use with pin drivers 3 point head engagement designed for stable driving Cortical threads Cancellous threads Cutting tip designed to maximize far cortex purchase 2.0 mm Screw 2.7 mm Screw 8 mm-15 mm (1 mm increments)

  • Page 13: Surgical Approach

    Headless Compression and Twist-Off Screws Surgical Technique 11 | Twist-Off Screw Technique Figure 1 Figure 2 Osteotomy The osteotomy is made horizontal and parallel to the The following surgical technique describes a Twist-Off Screw being used in a Weil osteotomy. sole.

  • Page 14: Insertion

    Headless Compression and Twist-Off Screws Surgical Technique 12 | Twist-Off Screw Technique Figure 4 Figure 3 Figure 5 Osteotomy (cont.) Insertion Once the osteotomy has been completed, slide the Hold the head against the metatarsal with the plantar segment of the metatarsal head proximally to forefinger.
  • Page 15 Headless Compression and Twist-Off Screws Surgical Technique 13 | Twist-Off Screw Technique Figure 7 Figure 6 Figure 8 Insertion (cont.) Once the screw head engages the dorsal cortex, the If inserting the Twist-Off Screw in osteoporotic bone, support prongs are designed to snap off (Figure 6). stop advancing the screw before the head engages the near cortex.

  • Page 16: Final Step

    Headless Compression and Twist-Off Screws Surgical Technique 14 | Twist-Off Screw Technique 2.0 mm Cortical 2.7 mm Cancellous Figure 9 Figure 10 Final Step Resection of the dorsal peak is the final step of this Note: The 2.0 mm Twist-Off Screw is designed with procedure (Figure 9).

  • Page 17: Ordering Information

    Headless Compression and Twist-Off Screws Surgical Technique 15 | Ordering Information Implants – Headless Compression Screws 2.5 mm Screws, Fully Threaded 3.0 mm Screws, Fully Threaded Non-Sterile Description Non-Sterile Description HCS Screw 2.5 x 10 HCS Screw 3.0 x 10 110018415 110018448 110018416*...
  • Page 18 Headless Compression and Twist-Off Screws Surgical Technique 16 | Ordering Information Implants – Twist-Off Screws 2.0 mm Twist-Off Screws (Cortical) 2.7 mm Twist-Off Screws (Cancellous) Non-Sterile Description Non-Sterile Description 110018481 Twist-Off Screw 2.0 x 8 110018498 Twist-Off Screw 2.7 x 8 110018482 Twist-Off Screw 2.0 x 9 110018499...

  • Page 19: Indications And Contraindications

    Headless Compression and Twist-Off Screws Surgical Technique 17 | Indications and Contraindications INDICATIONS CONTRAINDICATIONS The Zimmer Biomet Headless Compression Screws 1. Infections. and Twist-Off Screws are indicated for fixation of 2. Patient conditions including blood supply bone fractures, fusion of a joint (arthrodesis) or bone...
  • Page 20 Biomet sales force only. Distribution to any other recipient is prohibited. All content herein is protected by copyright, trademarks and other intellectual property rights owned by or licensed to Zimmer Biomet or its affiliates unless otherwise indicated. This material must not be redistributed, duplicated or disclosed, in whole or in part, without the express written consent of Zimmer Biomet.

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