Zimmer® Herbert™ Cannulated Bone Screw Zimmer Herbert Surgical Technique

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Zimmer®

Herbert™

Cannulated

Bone Screw

An innovative option for managing the reduction and fixation

of difficult fractures

Zimmer®

Herbert™

Cannulated

Bone Screw

Specifically Designed for Problem Internal Fixation

The headless design of the Herbert Screw means that the screw is completely

embedded in the bone, without any protrusions to cause tissue irritation even in

intra-articular placement. • Cannulation helps ensure precise placement of the

screw. • Herbert Cannulated Guide Pins hold the fragment and act as guides for

drilling, tapping, and screw placement. • The Tivanium® Ti-6A1-4V Alloy used in

fabricating these screws is highly biocompatible and corrosion resistant. • The

thread design of the Herbert Screw creates compression and provides fracture

stability. As the proximal threads engage the bone, the fracture is drawn together,

helping to create and maintain stability of the fracture site.

The Herbert Cannulated Bone Screw is

designed for the management of fractures

where minimal tissue coverage makes

standard screw use inappropriate or where

extreme precision in fragment alignment is

imperative. Such locations might include

fractures of the:

• Olecranon and malleolar region

• Distal femur

• Proximal tibia

• Distal tibia

4.5mm Herbert Cannulated

Bone Screw

6.5mm Herbert Cannulated

Bone Screw

INDICATIONS FOR USE

The Herbert Cannulated Bone Screw System

(4.5mm and 6.5mm diameter) are indicated

for fracture fixation, reconstruction, osteotomy,

and arthrodesis of various bones and bone

fragments including joint fusions (arthrodeses)

in the foot and fixation of intra-articular

fractures of the humerus, femur and tibia.

3

6

In determining screw length, the

surgeon may wish to choose an

implant 5mm to 10mm shorter than

the measured pilot length. Using the

Cannulated Screwdriver, insert the

Herbert Cannulated Screw. As the

trailing threads engage the bone,

reduction is achieved. These

trailing threads should be seated

approximately 1mm below the

cortex of the bone to ensure that

there is no intra-articular protrusion

or interference with the joint

function.

1Guide Pin

After initial reduction of the fracture

fragments is obtained, the

specifically designed Herbert

Cannulated Guide Pin is placed

through the fragments to act as a

Guide Wire for the rest of the

placement operation. The Guide Pin

should not perforate the opposite

cortex.

2

Use the Depth Gauge to measure the

length of the Guide Pin in the bone.

If the Guide perforates the opposite

cortex, corresponding compensation

must be made when selecting the

implant length.

Insert the Proximal Drill Bit over the

Guide Pin to drill the cortex. The Drill

Bit should be advanced until the

built-in stop contacts the cortex of

the bone.

4

Insert the Distal Drill Bit over the

Guide Pin and drill to the desired

depth. At this time the surgeon may

choose to drill 5mm less than the

pilot length.

Option: The Distal Drill Bit may be

inserted into a Jacob’s Chuck to

the appropriate calibration, thus

allowing the surgeon to utilize the

Chuck as an automatic stop.

5

Insert the Cannulated Tap over

the Guide Pin and tap the channel

to prepare for the leading screw

threads of the implant. Tap depth

should be equal to the depth

created by the Distal Drill Bit.

Proximal

Drill Bit

Depth Gauge

Cannulated

Tap

Distal Drill Bit Insert Screw

Contact your Zimmer representative or visit us at www.zimmer.com

Order Information

Prod. No. Description Qty. in Set

00-1155-001-00 Herbert Cannulated Bone Screw Set

(Includes the following implants,

instruments and case components)

4.5mm Implants

47-1155-025-05 25mm 2

47-1155-030-05 30mm 2

47-1155-035-05 35mm 2

47-1155-040-05 40mm 2

47-1155-045-05 45mm 2

47-1155-050-05 50mm 2

47-1155-055-05 55mm 2

47-1155-060-05 60mm 2

47-1155-065-05 65mm 2

47-1155-070-05 70mm 2

47-1155-075-05 75mm 2

47-1155-080-05 80mm 2

47-1155-085-05 85mm 2

47-1155-090-05 90mm 2

47-1155-095-05 95mm 2

47-1155-100-05 100mm 2

6.5mm Implants

47-1155-025-07 25mm 2

47-1155-030-07 30mm 2

47-1155-035-07 35mm 2

47-1155-040-07 40mm 2

47-1155-045-07 45mm 2

47-1155-050-07 50mm 2

47-1155-055-07 55mm 2

47-1155-060-07 60mm 2

47-1155-065-07 65mm 2

47-1155-070-07 70mm 2

47-1155-075-07 75mm 2

47-1155-080-07 80mm 2

47-1155-085-07 85mm 2

47-1155-090-07 90mm 2

47-1155-095-07 95mm 2

47-1155-100-07 100mm 2

Instrumentation

• 00-1155-011-00 Cannulated Tap, 4.5mm 1

• 00-1155-012-00 Cannulated Screwdriver, 4.5mm 1

• 00-1155-013-00 Trephine, 4.5mm 1

• 00-1155-014-00 Pilot Drill Bit, 3.8mm 1

• 00-1155-015-00 Main Drill Bit, 3.1mm 1

• 00-1155-016-00 Guide Pin, Partially Threaded, 1.6mm 1

00-1155-021-00 Cannulated Tap, 6.5mm 1

00-1155-022-00 Cannulated Screwdriver, 6.5mm 1

00-1155-023-00 Trephine 1

00-1155-024-00 Pilot Drill Bit, 5.5mm 1

00-1155-026-00 Guide Pin, Partially Threaded, 2.0mm 1

00-1155-027-00 Main Drill Bit, 4.6mm 1

• 00-1180-040-00 Depth Guide 1

• 00-4808-020-00 Parallel Drill Guide, 2.0mm 1

• 00-1155-085-00 Sterilization Tray 1

97-1155-401-00 Rev. 3 7-27-15 ©2015 Zimmer, Inc.

Sets

00-1155-093-00 Herbert Cannulated Bone Screw Instrumentation Set

(Includes all instrumentation listed)

00-1155-094-00 Herbert Cannulated 4.5mm Bone Screw instrumentation used for the

4.5mm bone screw (Denoted with a • )

00-1155-099-00 Herbert Cannulated Bone Screw Implant Set

(Includes two each of every size bone screw)

Herbert Cannulated Bone Screws

4.5mm Diameter

Leading Thread Major Diameter 4.5mm

Trailing Thread Major Diameter 5.8mm

Length Leading Trailing Pitch Flush Flush 1 Turn

Thread Thread Difference Reduction Reduction

Length Length Potential† Potential††

25-35mm 8.2mm 5.8mm .41mm 1.23mm 1.64mm

40-70mm 12.0mm 6.4mm .41mm 1.42mm 1.85mm

75-100mm 16.0mm 6.4mm .41mm 1.42mm 1.85mm

6.5mm Diameter

Leading Thread Major Diameter 6.5mm

Trailing Thread Major Diameter 8.1mm

Length Leading Trailing Pitch Flush Flush 1 Turn

Thread Thread Difference Reduction Reduction

Length Length Potential Potential

25-35mm 9.0mm 5.8mm .41mm 1.23mm 1.64mm

40-70mm 11.9mm 6.4mm .41mm 1.42mm 1.85mm

75-100mm 16.0mm 6.4mm .41mm 1.42mm 1.85mm

† Amount of fracture reduction potential with screw tightened flush with bone surface

†† Amount of fracture reduction potential with screw tightened 1mm below bone surface

Warning: This device is not approved by the U.S. FDA for screw attachment or

fixation to the posterior elements (pedicles) of clavical, thoracic, or lumbar spine.

DISCLAIMER:

This documentation is intended exclusively for physicians and

is not intended for laypersons. Information on the products and

procedures contained in this document is of a general nature

and does not represent and does not constitute medical advice

or recommendations. Because this information does not purport

to constitute any diagnostic or therapeutic statement with regard

to any individual medical case, each patient must be examined

and advised individually, and this document does not replace the

need for such examination and/or advise in whole or in part.

Please refer to the package inserts for important product

information, including, but not limited to, indications,

contraindications, warnings, precautions, and adverse effects.