{"id":65,"date":"2008-11-25T13:07:52","date_gmt":"2008-11-25T11:07:52","guid":{"rendered":"http:\/\/www.swisswuff.ch\/tech\/?p=65"},"modified":"2021-10-31T19:14:51","modified_gmt":"2021-10-31T18:14:51","slug":"otto-bock-wrist-unit-compatible-bolts-with-foam-anchor","status":"publish","type":"post","link":"https:\/\/www.swisswuff.ch\/tech\/?p=65","title":{"rendered":"Otto bock wrist unit, terminal device compatible bolts"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.swisswuff.ch\/tech\/?p=65\/#May_2008\" >May 2008<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.swisswuff.ch\/tech\/?p=65\/#Terminal_device_bolts\" >Terminal device bolts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.swisswuff.ch\/tech\/?p=65\/#Wrist\" >Wrist<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.swisswuff.ch\/tech\/?p=65\/#December_2008\" >December 2008<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.swisswuff.ch\/tech\/?p=65\/#January_2010_%E2%80%93_new_wrist\" >January 2010 &#8211; new wrist<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"May_2008\"><\/span>May 2008<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>Initially (May 2008) my test socket was equipped with a <a href=\"https:\/\/images.google.ch\/images?q=MovoWristFlex\" target=\"_blank\" rel=\"noopener\">MovoWristFlex<\/a> wrist unit. Since that wrist jammed within the first minutes of testing it still on site at the orthopedic technician&#8217;s workshop, they immediately replaced it with a standard Otto Bock wrist unit without ratchet.<\/p>\n<p>After using initial equipment for a while, it emerged that some Otto Bock parts did not withstand the <a href=\"https:\/\/www.swisswuff.ch\/tech\/?p=23\" target=\"_blank\" rel=\"noopener\">normal usage<\/a> I was putting it through. Some wrist and bolt parts appeared to require a detailed look.<\/p>\n<p>As I will require some non-standard add-ons (hobbies: not covered by insurance, such as crafting, gardening, ..) we were also looking into a standard interface specification for both wrist units and bolts.<\/p>\n<p>In order to start that project, I asked Otto Bock&#8217;s prosthetics department to give away part specifications including detailed bolt diameters and tolerances as the current situation (wrist slipping or hard to lock) made us wonder what was going on.<\/p>\n<p><!--more--><\/p>\n<p>Yet, Otto Bock representatives do not give away design specs &#8211; including diameter tolerances. That is funny, because not only are widely varying bolt diameters not a particular high security information &#8211; the reverse is true: they should be public as they are typically paid for by government agencies or public insurances.<\/p>\n<p>Now, while withholding hook and bolt tech specs, an Otto Bock representative also suggested that I may not adhere to a &#8220;normal&#8221; amount of usage.<\/p>\n<p>If they share no technical tolerances and specifications, how can they expect anybody to distinguish &#8220;normal&#8221; from &#8220;excessive&#8221; usage.<\/p>\n<p>This type of entertainment could be straight out of Dilbert.<\/p>\n<h1><span class=\"ez-toc-section\" id=\"Terminal_device_bolts\"><\/span><strong>Terminal device bolts<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>As it turned out, our Otto Bock factory issue bolts exhibit a rather wide diameter range &#8211; I own four bolts, two of which sit fully fixed against rotation when the wrist is locked, but one rotates with moderate force and the fourth one rotates <em>just by cable pulling:<\/em><\/p>\n<p><iframe loading=\"lazy\" title=\"Otto Bock wrist unit \/ bolt diameter mismatch\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/Ag_IQuCD2tw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>We thus decided to measure the bolts ourselves. So, these Otto Bock bolts feature diameters range around values:<\/p>\n<p>Bolt 1 (previously, this was the hook shown in the video above, now revised with new Otto Bock bolt): <strong><span style=\"color: #ff0000;\">1,599 cm<\/span><\/strong> (one diameter; other not measured); this bolt is at the upper and of the size of our current selection and I can almost not completely lock the wrist &#8211; conversely, after wearing this thick bolt for a while, the other two bolts (below) start to exhibit a greater rotation slip than before.<\/p>\n<p><iframe loading=\"lazy\" title=\"Otto Bock bolt #1 - hook\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/1s84BxqYXSQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Bolt 2, on prosthetic hand: <strong><span style=\"color: #ff0000;\">1,588 cm<\/span><\/strong> (one diameter) &#8211; <strong><span style=\"color: #ff0000;\">1,590 cm<\/span><\/strong> (other diameter) (with locked wrist, this still can be rotated).<\/p>\n<p><iframe loading=\"lazy\" title=\"Otto Bock bolt#2 - hand\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/1hC4qA3pV8Y?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Bolt 3, hook: <strong><span style=\"color: #ff0000;\">1,585 cm<\/span><\/strong> (one diameter) &#8211; <strong><span style=\"color: #ff0000;\">1,588 cm<\/span><\/strong> (other diameter) (with locked wrist, this still can be rotated). Needless to say that this is not useful as &#8220;work hook&#8221;.<\/p>\n<p><iframe loading=\"lazy\" title=\"Otto Bock bolt #3 - hook\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/I222tSNanxg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>The following image gives an idea about the bolts and terminal devices at hand:<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5843.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-74\" style=\"margin-right: 450px;\" title=\"dscf5843 cable controlled body powered prosthesis terminal devices hook hand bolt wrist\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5843-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p>Our own first series of bolts that was done experimentally yielded these results: <strong><span style=\"color: #ff0000;\">1,583 cm<\/span><\/strong> (free rotational slip), <strong><span style=\"color: #ff0000;\">1,573 cm<\/span><\/strong> (wiggles), <strong><span style=\"color: #ff0000;\">1,581 cm<\/span> <\/strong>(wiggles).<\/p>\n<p>This warrants further questions:<\/p>\n<ul>\n<li>How are Otto Bock&#8217;s metric tolerances controlled? According to some information I obtained, some of their machines are precise down to at least 0.02 mm if not down to the micrometer range.<\/li>\n<li>Does Otto Bock implement a quality control model that assumes that significant testing is done by the client? Given their product prices (one bolt is sold to the end user for 80 CHF) this is worth asking.<\/li>\n<\/ul>\n<h1><span class=\"ez-toc-section\" id=\"Wrist\"><\/span><strong>Wrist<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>While we now identified the problem of widely varying bolts, we identified another problem: my current wrist exhibited a slow increase in bolt adapter diameter over a period of 6 months. We dismantled, took apart and examined the wrist closely (great stuff for the &#8216;<a href=\"https:\/\/images.google.ch\/images?q=steampunk\" target=\"_blank\" rel=\"noopener\">steam punk<\/a> aficionado&#8217; in you):<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5856.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-80\" style=\"margin-right: 450px;\" title=\"dscf5856 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5856-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5862.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-82\" style=\"margin-right: 450px;\" title=\"dscf5862 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5862-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p>A view from the back shows an intricate spring mechanism designed to hold the circular bolt groove in place:<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5859.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-77\" style=\"margin-right: 450px;\" title=\"dscf5859 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5859-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5863.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-79\" style=\"margin-right: 450px;\" title=\"dscf5863 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5863-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p>This mechanism now can be opened carefully.<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5867.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-81\" style=\"margin-right: 450px;\" title=\"dscf5867 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5867-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5868.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-76\" style=\"margin-right: 450px;\" title=\"dscf5868 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5868-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p>We see a circular spring with two bent ends. One of the ends leans against a conical screw obviously designed to be adjusted while the spring bends out of shape:<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5872.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-75\" style=\"margin-right: 450px;\" title=\"dscf5872 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5872-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p>About that spring; if you closely examine the angles of the ends that are bent from the circular shape you will find that the end to the right (which leans against that conical screw in its intended position inside the wrist) is slightly deformed compared to the end to the left (picture below). That may be the result of using Otto Bock&#8217;s bolts of the upper end of the diameter range. In other words, wide bolt tolerances are obviously able to interfere with the delicate mechanical stability of this piece of iron.<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5876.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-83\" style=\"margin-right: 450px;\" title=\"dscf5876 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5876-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<p>This picture shows how the bent end of the spring leans against a conical screw:<\/p>\n<p><a href=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5878.jpg\"><img decoding=\"async\" class=\"alignnone size-medium wp-image-78\" style=\"margin-right: 450px;\" title=\"dscf5878 otto bock wrist 10V10\" src=\"https:\/\/www.swisswuff.ch\/tech\/wp-content\/uploads\/2008\/12\/dscf5878-300x225.jpg\" alt=\"\" width=\"100%\" \/><\/a><\/p>\n<h1><span class=\"ez-toc-section\" id=\"December_2008\"><\/span><span style=\"color: #ff0000;\"><strong>December 2008 <\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>We now defined the following problem list:<\/p>\n<ul>\n<li>Terminal device bolts by Otto Bock vary in diameter within a range that spans &#8220;free wheeling&#8221; (rather small) and &#8220;can almost not close wrist lock&#8221; (rather big). Even two out of three bolts that were available at the prosthetic technician&#8217;s office apparently did not lock in my wrist.<\/li>\n<li>Wrist unit bolt adapter does not maintain same diameter over several months if used in conjunction with Otto Bock&#8217;s varying diameter bolts: particularly large diameter bolts seem to have the capacity to distend the metal parts of the bolt adapter.<\/li>\n<li>The terminal device cannot be rotated without fiddling with the lock that can be jammed if a bolt has a large(r) diameter. That makes it impossible to wear a silicon glove that covers the wrist.<\/li>\n<li>The bolt\/wrist connection may not just slip (rotation) but also wiggle.<\/li>\n<\/ul>\n<p>Otto Bock Switzerland was notified of these observations as of September 2009, but did not provide anything I would perceive as constructive answer that would solve any of the issues.<\/p>\n<p>In an answer from Otto Bock Germany, they recommended I get ergotherapy, they reinforced their perception of producing medical quality precision stuff, and they told me they would use their legal services against me in case they felt that&#8217;d be necessary.<\/p>\n<p>At the moment I read that they responded to differing bolt diameters &#8216;with ergotherapy&#8217; I first had to laugh so hard I almost swallowed my liver.<\/p>\n<p>Then I reconsidered that suggestion and found they <em>must<\/em> have meant for me <em>to get my own wrist unit<\/em> built:<\/p>\n<p><a href=\"https:\/\/de.wikipedia.org\/wiki\/Ergotherapie#Therapiemethoden\" target=\"_blank\" rel=\"noopener\">https:\/\/de.wikipedia.org\/wiki\/Ergotherapie#Therapiemethoden<\/a><\/p>\n<p><span style=\"color: #3366ff;\">As part of &#8216;ergotherapy&#8217;, three methods are significant:<br \/>\n<\/span><\/p>\n<p><span style=\"color: #3366ff;\">Competence oriented method<br \/>\n<\/span><\/p>\n<ul>\n<li><span style=\"color: #3366ff;\">selected craft \/ tool usage <span style=\"color: #ff0000;\">[1]<\/span><br \/>\n<\/span><\/li>\n<li><span style=\"color: #3366ff;\">exercises from life and hobbies <span style=\"color: #ff0000;\">[2]<\/span><br \/>\n<\/span><\/li>\n<li><span style=\"color: #3366ff;\">acquisition of lost abilities <span style=\"color: #ff0000;\">[3]<\/span><br \/>\n<\/span><\/li>\n<li><span style=\"color: #3366ff;\">training abilities<br \/>\n<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #3366ff;\">Expression oriented method<br \/>\n<\/span><\/p>\n<ul>\n<li><span style=\"color: #3366ff;\">using creative means to express, to shape, to exhibit and to communicate <span style=\"color: #ff0000;\">[4]<\/span><br \/>\n<\/span><\/li>\n<li><span style=\"color: #3366ff;\">use and emphasize emotions<span style=\"color: #ff0000;\"> [5]<\/span><br \/>\n<\/span><\/li>\n<li><span style=\"color: #3366ff;\">use music, use materials <span style=\"color: #ff0000;\">[6]<\/span><br \/>\n<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #3366ff;\">Interaction oriented method<strong><br \/>\n<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #3366ff;\">group dynamics, group dynamical process, work and deal with issues within a group, experience group togetherness <span style=\"color: #ff0000;\">[7]<\/span><br \/>\n<\/span><\/li>\n<li><span style=\"color: #3366ff;\">group members can have different roles <span style=\"color: #ff0000;\">[8]<\/span><\/span><\/li>\n<\/ul>\n<p>As you see from the following annotations, I am closely following ergotherapy aspects:<\/p>\n<p><span style=\"color: #ff0000;\">[1] using CAD software, milling machines, screw drivers, and many more<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[2] discussing, devising, pondering, and drafting are exercises that are rooted deeply in life<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[3] building a wiggle free wrist is a step towards regaining abilities, definitely<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[4] what did you think this website was, an exercise in hiding?<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[5] while Otto Bock recommends ergotherapy I am not sure how they deal with negative emotional reactions targeted against some apparent product flaw, but I am very happy to read that my own emotions and their expression generally are considered part of healthy ergotherapy (which was what Otto Bock recommended)<br \/>\n<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[6] music, aluminum, Ramax, brass<br \/>\n<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[7] yes, team work is a challenge and fun<\/span><\/p>\n<p><span style=\"color: #ff0000;\">[8] we have members that design *and* craft, and i help with design *and* test; so we do implement different roles.<\/span><\/p>\n<p>It is <em>my personal conviction <\/em>that if an industry is able to build motors that run 300&#8217;000 kilometers and drill hammers that allow for lock and unlock of steadfast drill mounts using little more than two fingers, there <em>necessarily <\/em>must be a way to build a prosthetic wrist, hook and hand that delivers solid positioning and motion for at least 80 consecutive years of so-called &#8216;heavy duty&#8217; usage. And it is <em>my personal conviction<\/em> that it is up to me as customer of such an industry to see to it, if necessary personally, that state-of-the art technology will happen as long as no one else is up for the job.<\/p>\n<p>The customer service representative was faced with the information that their resulting bolt problems were consistent with extremely cheap off-shore (such as, far east) manufacturing and absent quality control while still charging a premium (80 CHF) for a single bolt; in fact, my prosthetist had alleged to me later, that someone inside Otto Bock had confirmed that notion when discussing these bolts. Be whatever, I invited the Otto Bock representative to apologize to me. That was on September 22nd 2009.<\/p>\n<p>After all, they caused me<\/p>\n<ul>\n<li>a number of trips to the prosthetist<\/li>\n<li>a number of trips to the factory where we built the real wrist unit<\/li>\n<li>a lot of time investigating and researching<\/li>\n<\/ul>\n<p>Respect is the ultimate currency &#8211; and they sure are not aware of that.<\/p>\n<p>I am very happy about the occasional support of Otto Bock, and about the support of good friends. Particularly, I thank Stephan Mueller, Roman Meili, Remo Quinter and Peter Schneider.<\/p>\n<h1><span class=\"ez-toc-section\" id=\"January_2010_%E2%80%93_new_wrist\"><\/span><strong><span style=\"color: #ff0000;\">January 2010 &#8211; new wrist <\/span><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>We drafted our first own wrist unit (probably as part of the &#8216;ergotherapy&#8217; that Otto Bock suggested). Continue <a href=\"https:\/\/www.swisswuff.ch\/tech\/?p=113\">here<\/a>.<\/p>\n\n<div class=\"twitter-share\"><a href=\"https:\/\/twitter.com\/intent\/tweet?via=swisswuff\" class=\"twitter-share-button\" data-size=\"large\">Tweet<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>May 2008 Initially (May 2008) my test socket was equipped with a MovoWristFlex wrist unit. Since that wrist jammed within the first minutes of testing it still on site at the orthopedic technician&#8217;s workshop, they immediately replaced it with a standard Otto Bock wrist unit without ratchet. After using initial equipment for a while, it&#8230;<\/p>\n","protected":false},"author":1,"featured_media":74,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,5,28,17,25,8],"tags":[],"class_list":["post-65","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-brands","category-cable","category-disability-public","category-otto-bock","category-wrist-connector","category-prosthetics","wpcat-16-id","wpcat-5-id","wpcat-28-id","wpcat-17-id","wpcat-25-id","wpcat-8-id"],"publishpress_future_action":{"enabled":false,"date":"2026-07-11 08:14:24","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/posts\/65","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=65"}],"version-history":[{"count":4,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/posts\/65\/revisions"}],"predecessor-version":[{"id":12170,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/posts\/65\/revisions\/12170"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=\/wp\/v2\/media\/74"}],"wp:attachment":[{"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=65"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=65"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.swisswuff.ch\/tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=65"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}