Percutaneous K-wire Fixation

At Kirschnerwires.com, we are not medical experts, we are a K-Wire Manufacturer who is interested in technological and research advances in the field of precision wire creation. The most valuable resource we have found for discussion on the surgical aspects of K-Wire usage are posted from the AO foundation. The following article is helpful for identifying K-wire fixation:

https://www2.aofoundation.org/wps/portal/surgery?showPage=redfix&bone=Hand&segment=PhalangesMiddle&classification=74-Shaft,%20Transverse&treatment=&method=Simple%20transverse%20fracture&implantstype=K-wire%20fixation&approach=&redfix_url=1291115448210&Language=en

If you are undergoing surgery for a fracture I would highly suggest doing some reading on the AO Foundation website to learn more about the techniques used in these types of surgeries. When I first started learning about ways in which Modern Grinding pins and wires are used, I will admit, I was a little queasy. I have learned that these types of surgeries are fairly common and meant to heal a variety of injuries. I now find myself gravitating to fractures out of interest to find out how we can best help those in need. 

K- Wires can be used in both temporary and long term scenarios.  K-wires are used for temporary fixation during some operations. After definitive fixation they are then removed. The pins are usually removed four weeks post operation. They can be used for definitive fixation if the fracture fragments are small such wrist or hand fractures. Some settings they can be used for intermedullary fixation of bones such as the ulna.

 

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Kirschner Wire Case Studies: Journal of the American Podiatric Medical Association

There were two case studies from the recent Journal of the American Podiatric Medical Association which involved Kirschner Wire usage:

Irreducible Metatarsophalangeal Joint Dislocation of the Lesser Toes

We performed a dorsal incision between the second and third metatarsals, and the metatarsal heads were found to be entrapped under the plantar plate. Dislocation reduction was performed without damage to the plantar plate, and one Kirschner wire was used to fix the fourth metatarsal head fracture. The pin was removed 8 weeks after surgery, and the patient regained normal gait and returned to work and his previous physical activity level without recurrent dislocation.

Open Reduction-Internal Fixation of a Navicular Body Fracture with Dorsal Displacement of the First and Second Cuneiforms

He underwent open reduction internal fixation of the navicular body fracture successfully but failed adequate reduction of the navicular cuneiform joint after ligamentous reconstruction. After revisional surgery, he also failed 6 weeks of percutanous pinning with Kirschner-wire fixation. When comparing the literature of a similar injury, the Lisfranc fracture disclocation, the same principles may apply.

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Bulk Kirschner Wires

K-Wire Radius Threaded End Group

Hot off the press, here are a few bulk K-Wires. Please send us your next K-Wire project. We love to  partner with medical device designers to create special customized products. We know every project we do could potentially help save a life OR wrist fracture OR hip fracture OR ankle OR

 

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K-Wire Sizes

We often recieve the question – “The doctor told me to buy 45 and 62 K-Wire, what does that mean?” It refers to the diameter of the K-Wire. 045 means that the wire has a .045 inch radius around the wire. You guessed it, 062 is the same as .062 inch diameter K-wire.

K-Wire diameters typically vary from .028 inches to .062 inches, with the most common being .062, .045, .054 and .057 in that order. The typical lengths are 4″, 6″ and 9″ in lengths. Spinal K-Wires for MIS surgeries tend to have lengths in the 15″ to 22″ range. As mentioned on other pages of this blog additional K-Wire options include stainless steel, nitinol, threaded, smooth, single ended, double ended, trocar tipped or diamond tipped.

If you have additional K-Wire size questions or if you would like to quote a project please email info@moderngrinding.com. Modern Grinding is a US based FDA CGMP compliant contract manufacturer of medical wire components.

K Wire Sizes

K Wire Sizes

A K-Wire can be customized to any of the following sizes (includes conversion):

0.028 inches = 0.711 mm
0.029 inches = 0.737 mm
0.030 inches = 0.762 mm
0.031 inches = 0.787 mm
0.032 inches = 0.813 mm
0.033 inches = 0.838 mm
0.034 inches = 0.864 mm
0.035 inches = 0.889 mm
0.036 inches = 0.914 mm
0.037 inches = 0.940 mm
0.038 inches = 0.965 mm
0.039 inches = 0.991 mm
0.040 inches = 1.016 mm
0.041 inches = 1.041 mm
0.042 inches = 1.067 mm
0.043 inches = 1.092 mm
0.044 inches = 1.118 mm
0.045 inches = 1.143 mm
0.046 inches = 1.168 mm
0.047 inches = 1.194 mm
0.048 inches = 1.219 mm
0.049 inches = 1.245 mm
0.050 inches = 1.270 mm
0.051 inches = 1.295 mm
0.052 inches = 1.321 mm
0.053 inches = 1.346 mm
0.054 inches = 1.372 mm
0.055 inches = 1.397 mm
0.056 inches = 1.422 mm
0.057 inches = 1.448 mm
0.058 inches = 1.473 mm
0.059 inches = 1.499 mm
0.060 inches = 1.524 mm
0.061 inches = 1.549 mm
0.062 inches = 1.575 mm

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Filed under 45 Kirschner Wire, 62 Kirschner Wire, K-Wire Sizes

Threaded K-Wire Comparision

Partial Threaded K-Wire Comparison

Partial Threaded K-Wire Comparison

Top K-Wire has the following specifications:
Product: Standard K-Wire
Outside Diameter (OD): .057″
Threading: Partial (.6″ Distal Threading)
Threading Profile: Major Diameter, Minor Diameter, Root Radius, Pitch
Tip: Trocar Tip on the Distal End Full Radius on the Proximal End
Trocar Tip Angle: 30 degrees taper
Trocar Tip Point: 120 degrees per side
Material: Nitinol (NiTi) #1
Oxide: Light Oxide

Bottom K-Wire has the following specifications:

Product: Custom Manufactured K-Wire
Outside Diameter (OD): .057″
Minor Diameter: .046
Threading: Partial (.5″ Distal Threading)
Threading Profile: Root Radius .057, Pitch .055
Tip: Trocar Tip on the Distal End Full Radius on the Proximal End
Trocar Tip Angle: 30 degrees taper
Trocar Tip Point: 120 degrees per side
Material: Nitinol (NiTi) #1
Oxide: Dark Oxide

 

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57 K-Wire with Trocar Tip and Partial Threading

K-Wire

Product: Standard K-Wire
Outside Diameter (OD): .057″
Threading: Partial (.6″ Distal Threading)
Threading Profile: Major Diameter, Minor Diameter, Root Radius, Pitch
Tip: Trocar Tip on the Distal End Full Radius on the Proximal End
Trocar Tip Angle: 30 degrees taper
Trocar Tip Point: 120 degrees per side
Material: Nitinol (NiTi) #1

 

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