{"id":6929,"date":"2016-05-04T18:43:35","date_gmt":"2016-05-04T16:43:35","guid":{"rendered":"https:\/\/www.profantoniomoroni.com\/interventi\/artroplastica-del-ginocchio\/?lang=en"},"modified":"2022-02-03T18:07:32","modified_gmt":"2022-02-03T17:07:32","slug":"knee-arthroplasty","status":"publish","type":"page","link":"https:\/\/www.profantoniomoroni.com\/en\/knee-arthroplasty\/","title":{"rendered":"Knee arthroplasty"},"content":{"rendered":"[vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/1″][page_submenu sticky=”true” bg_color=”#3770b5″ link_color=”#ffffff”][page_link link_url=”#femoro” title=”PATELLA ARTHROPLASTY” tab_id=”1462206081872-4″ id=”1464073480328-1″] [\/page_link][page_link link_url=”#mono” title=”MONOCOMPARTMENTAL ARTHROPLASTY” tab_id=”1462206082497-10″ id=”1464073539186-3″] [\/page_link][page_link title=”TRICOMPARTMENTAL ARTHROPLASTY” tab_id=”1462207124245-10″ link_url=”#tri” id=”1464073622324-8″][\/page_link][\/page_submenu][divider line_type=”No Line” custom_height=”35″][\/vc_column][\/vc_row][vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][vc_column_text]\n
<\/div>\n

Knee arthroplasty<\/h1>\n[\/vc_column_text][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ el_class=”text_contact” width=”2\/3″][vc_column_text el_class=”font-page”]\n

Which implant is right for me?<\/strong><\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” id=”femoro” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][vc_column_text]\n

<\/div>\n

PATELLA ARTHROPLASTY<\/span>[\/vc_column_text][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ el_class=”text_contact” width=”2\/3″][vc_column_text el_class=”font-page”]\n

\"\"The aim of any joint replacement is to preserve as much bone as possible. Over the last decades, apart from standard bilateral resurfacings, \u00abbone preserving\u00bb knee implants have been developed, such as patella arthroplasty.<\/p>\n[\/vc_column_text][divider line_type=”No Line” custom_height=”50″][\/vc_column][\/vc_row][vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” id=”mono” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][vc_column_text]\n

<\/div>\n

MONOCOMPARTMENTAL ARTHROPLASTY<\/span>[\/vc_column_text][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ el_class=”text_contact” width=”2\/3″][vc_column_text el_class=”font-page”]\n

\"monocomportamentale\"Monocondylar replacement of the knee allows younger patients to live a more active life. The monocondylar knee replacement is used when only one condylar side is damaged. A femoral component is anchored to the femur and a tibial component to the tibia. A polyethylene insert is placed between the two components to replace the meniscus in its shock absorbing role.<\/p>\n[\/vc_column_text][divider line_type=”No Line” custom_height=”50″][\/vc_column][\/vc_row][vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” id=”tri” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][vc_column_text]\n

<\/div>\n

TRICOMPARTMENTAL ARTHROPLASTY<\/span>[\/vc_column_text][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ el_class=”text_contact” width=”2\/3″][vc_column_text el_class=”font-page”]\n

\"\"In most cases, bilateral replacement of the surfaces is performed (bicondylar). In this case, the damaged surfaces of both femoral condylars are resurfaced with a femoral component and those of the tibia with a tibial component. Also in this case, the meniscus is replaced on both sides with a polyethylene insert. When possible, the ligaments are kept.
\nWhen the stabilizing ligaments are also affected, a constrained knee prosthesis can be used. The tibial and femoral components are connected to compensate for the function of the missing ligaments without excessively limiting the movement of the artificial knee joint.
\nThe implants are generally made from titanium or cobalt-chromium alloys. Alternatively, innovative materials such as zirconium-niobium alloys can be used, which are highly resistant with ceramic surfaces. Durable plastic materials (polyethylene) have been shown to be very suitable as effective bearing surfaces.
\nHowever, despite the use of these high quality materials, prosthetic joints can become mobilized and in this case they must be replaced through revision surgery. In general, existing artificial joints last for 15-20 years. Early mobilization of an artificial joint can be due to, for e.g., low quality bone or concomitant diseases, but also to variable factors such as obesity and excessive strain or excessive load.<\/p>\n

\"allergie\"[\/vc_column_text][divider line_type=”No Line” custom_height=”50″][divider line_type=”No Line” custom_height=”50″][vc_column_text el_class=”font-page”]\n

What about allergies?<\/strong><\/p>\n

Approximately 12% of the population is allergic to nickel, while 5% is allergic to cobalt or chromium. Even if a person has a cutaneous allergic reaction to metals, it does not necessarily mean that he\/she will have problems with an endoprosthesis made from stainless steel or a cobalt-chromium alloy \u2013 indeed, so far there is no clinical evidence to support this. However, for potentially allergic patients, alternative materials exist such as knee implants covered with titanium nitride or endoprostheses made from non-allergenic zirconium-niobium alloys.<\/p>\n

Fixation with or without cement<\/strong><\/p>\n

The permanent fixation technique chosen by the surgeon for the joint depends on various factors. These include age, physical activity and above all, bone quality. For fixation without cement, the bone quality must be good. The surfaces of the femoral and tibial components of the implant facing the bone are generally rough or have a structure similar to bone in order to favour bone growth over the implant. With cement fixation, the femoral and tibial components are firmly anchored to the bone using bone cement. The joint can be used shortly afterwards.<\/p>\n

Bone cement<\/strong><\/p>\n

Bone cement is made of two components, sometimes with the addition of antibiotics to prevent infection. The advantages of bone cement are the immediate fixation of the prosthesis and the excellent fixation properties in case of bad quality bone.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][vc_column_text]TIMELINESS OF TREATMENT<\/span><\/i><\/a>[\/vc_column_text][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][\/vc_column][\/vc_row][vc_row type=”in_container” scene_position=”center” text_color=”dark” text_align=”left” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”1\/3″][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ width=”2\/3″][divider line_type=”Full Width Line” custom_height=”1″][divider line_type=”No Line” custom_height=”35″]

<\/i> <\/i>