Prosthetic Modifications

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This page was created to provide information on prosthetic limb modifications for use in amputee mountain biking and cycling as well as other sports. Included on this page are modified prosthetic arms, prosthetic legs, and prosthetic devices.

If you have modified an artificial arm, leg, or device, and would like to be included on this page, or if you would like more information on modifying artificial limbs for use in mountain biking or cycling, email your enquiries or pictures and information to: mtb-amputee@mtb-amputee.com

 

Prosthetic Arm Modifications for Bike Riding.

Prosthetic Leg Modifications for Bike Riding.

 

 

 

 

 

 

 

 

 

Prosthetic Arm Modifications for Bike Riding.

   

The following two pictures show the first & second generation dedicated riding arm. The top arm depicts the first generation arm. Both designs feature "Seattle Mind" socket mounting adaptors. The adaptors are actually leg-knee components. The adaptor is attached to the upper socket with screws, then secured with epoxy glue. The upper sockets are simple clear plastic test socket material, that is properly fitted & moulded.

Click On Picture To Enlarge.

 

The hook-terminal I prefer is a basic working all-purpose model made by Dorrance. You can easily adjust the grip strength by adding or subtracting elastic bands. (I prefer a death-grip) The hook-terminal attaches to a "Endo-skeletal Delryn Pylon" via a standard terminal adaptor. The adaptor must be inserted with glue into the pylon then secured with screws through the pylon wall.

Click On Picture To Enlarge.

The second generation arm is a special "slip- socket" design that features two sockets, an outer & inner. The inner socket slides up & down to a maximum of 1/2 inch. This allows for more freedom of movement as well as protection & shock absorption via a tennis ball.

Click On Picture To Enlarge.

Since there are no controls for this arm, all you need is a basic sturdy back harness. ( Double up the strap & use stainless steel rivets)

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You can see by this picture how the hook-terminal clamps on to the handle bar.

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The following pictures feature a modified conventional prosthetic arm that was made by Bryan Mitchell of. Mitchell Prosthetic & Orthotic Services Ltd. The modifications were made for both safety and comfort.

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The arm features basic standard controls with only minor modifications which include a set screw at the base of the upper socket that secures the elbow turntable and prevents it from twisting or turning. Other modifications include a cable extension which allows you to rotate the hook without adversely affecting the control harness and an elbow control lockout device which allows you to lockout the elbow by simply detaching the control cable.

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I would like to acknowledge and thank Bryan Mitchell of B.D. Mitchell Prosthetic & Orthotic Services Ltd.. Bryan developed my first riding-arm after I broke both of my regular prosthetic arms in my first dual-slalom race in 1993. In 1999, Bryan co-designed the second generation arm, along with a student / apprentice. For more information, Bryan can be contacted at: B.D. Mitchell Prosthetic & Orthotic Services Ltd., 1175 Duffern Crescent, Nanaimo BC, Canada, v9s 2b5. Phone: (250) 754-1442 or Fax: (250) 754-3300 or you can visit their website at: Mitchell Prosthetic & Orthotic Services Ltd

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The following custom arm & hand were built and designed by William Craig who is featured on the Arm Amputees page. The arm features a fox racing shox and a releasable grip.

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If you would like to see more prosthetic arm modifications visit William Craigs' website: www.prostheticarm.com

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The following pictures were contributed by Bruce Chatwell who is featured on the Motorcycle Amputee page and has been an above left elbow amputee for over 36years. Bruce has logged thousands of miles on both his Harley Davidson motorcycle and his 600 Mountain Cat snowmobile, using the arm featured below.

Click on photos to enlarge.

The pictures also show how Bruce operates the clutch by resting his arm on the bar and pulling the clutch backwards. For more information you can email Bruce at: bchatwell@collinscom.net or to see Bruces' right hand snowmobile brake modification visit the Snowmobile Amputee page.

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The following pictures and information were contributed by Jon Rayeski. Here is what Jon has to say:

 I am a recent graduate of the Savannah College of Art and Designís BFA Industrial Design program. I lost my right arm above the elbow when I was 16 in a skiing accident and I am currently designing a prosthetic for active amputees.  I included pictures of my current arm which is a body powered carbon fiber unit with a hook that has done fairly well for me, I have done things like kayak, rock climb, mountain bike and motorcycle ride, oh and of course I still ski. I have a lot I would like to improve on though. More specifically my efforts visually will not be toward creating an arm that mimics life, I want people to celebrate their diversity and think of their arm as a form of self expression rather than a cosmetic blemish.  I am currently in my research phase and am looking for as much input as possible from active amputees. I am planning on posting some surveys and discussion pages online and if you're interested or just want to give me some input, just send me an email and I'll keep you posted. Thanks. rayeski@msn.com

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The following picture and information was submitted by Jeremy Gordon.

HI, I'm a one armed mtb biker and I use a PVC cup puttied onto a bar end and just put my stump in the cup (I'm below right elbow) . I've attached pictures of the set up I've got on my flat bar roadie.

Cheers Jeremy Gordon, Sydney Australia

Click on picture to enlarge.

Stay tuned for more pictures and information.

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For information on Mert Lawwill's riding hand and handle bar adaptor  visit: http://www.mertshands.org

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The following pictures were contributed by Barry Simmons-Stuber, the father of Molly Simmons-Stuber who is featured on the Arm Amputees page. If you would like more information on Mollys' arm or bike set-up, check out Bike Modifications or visit her webpage at: www.amp-info.net/BikePros.htm

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Prosthetic Leg Modifications for Bike Riding.

 

The following photos were contributed by Dax Jaikel, a below right knee amputee featured on the Leg Amputees page.

Dax had this leg & foot made especially for riding. The second & third pictures feature a custom off road foot that is partially made from the bottom sole of a SIDI SRS shoe. For more information you can email Dax at: dax@sidi.co.cr

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The following photos were contributed by Jan Barlage, an above right knee amputee featured on the Leg Amputees page. Jan developed this leg along with a special device to assist above knee amputees while riding down stairs and steeps.

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If you would like more information on Jan, you can visit the Bike Modifications page or check out www.barlage.org

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The following photos were contributed by Steve Middleton who is featured on the Leg Amputee page. The leg features components by Aulie Prosthetic Devices ( aaulie@coinet.com ) that are light weight, water proof, and relatively inexpensive. The leg also offers a wide range of movement for pedalling.

Click On Pictures To Enlarge.

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You can email Steve at: saam@shaw.ca or check out his website at: http://morethanmobility.ca/ for more information on Steve's leg and knee components.

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Stay tuned for future updates and additions.

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