Information For Use - Depuy Synthes Corail AMT Bedienungsanleitung

Excessive physical activity or trauma to the replaced joint may contribute to premature failure of the
hip replacement by causing a change in position, fracture, and/or wear of the implants. The patient
should be informed that factors such as weight and activity levels may significantly affect wear.

INFORMATION FOR USE

Preoperative
THE SURGEON SHOULD DISCUSS ALL PHYSICAL AND MENTAL LIMITATIONS PARTICULAR TO THE
PATIENT AND ALL ASPECTS OF THE SURGERY AND THE PROSTHESES WITH THE PATIENT BEFORE
SURGERY. The discussion should include the limitations and possible consequences of joint
replacement, and the necessity to follow the surgeon's instructions postoperatively, particularly in
regard to patient activity and weight.
Surgeons should not begin the clinical use of any hip prosthesis before they have thoroughly
familiarized themselves with its specific implantation technique (preoperative planning and surgical
technique). Surgical technique brochures and videos are available from DePuy.
Intraoperative
It is recommended that components at least one size larger and one size smaller than were
preoperatively determined be available at surgery to accommodate intraoperative selection of the
appropriate size(s).
Protective covers should be left on until the components are ready to be implanted. Do not use any
components if they have been dropped, have impacted a hard surface or have received any impact
during procedure. Damage to the component may not be visible, but could cause early failure of the
prosthesis. Before implanting a femoral head, the male taper on the femoral stem must be free of
blood, bone chips or other foreign materials. Foreign material between the head and the femoral stem
taper may impede proper seating of the head on the stem. This could affect the performance of the
femoral head or the locking mechanism between the femoral head and the femoral stem.
When performing revision surgery, it is imperative that any fibrous membrane encapsulating the
failed prosthesis be removed in its entirety. Residual fibrous membranes may interfere with implant
fixation. Improper selection, placement, or positioning of implants may result in unusual stress
conditions and a subsequent reduction in the functional life of the implant. Note that a femoral stem
placed in varus increases the stress on the proximal medial femoral cortex and may lead to loosening
of the implant. Increasing the anteversion of an acetabular component in total hip replacement may
result in instability and/or dislocation of the joint.
Prior to closure, the surgical site should be thoroughly cleansed of bone chips, ectopic bone, etc.
Foreign particles at the metal/plastic or ceramic/plastic interface may cause excessive wear. Range
of motion should be thoroughly checked for improper mating, instability, or impingement and
corrected as appropriate.
Postoperative
Strict adherence by the patient to the surgeon's instructions and warnings is extremely important.
Accepted practices should be followed in postoperative care.
The patient should be released from the hospital with complete written instructions and warnings
regarding concerning exercises, care and all restrictions on activity as well as those linked to exposure
to magnetic fields.
Partial weight bearing with two crutches and later with one crutch should be continued until muscle
function is sufficiently restored so that the operated extremity is no longer overloaded if crutches are
discarded; this may take 10 to 12 weeks.
A continuing periodic patient follow-up is recommended. Because of the unknown functional lifetime
of the implant, particularly with respect to the maintenance of implant fixation and UHMWPE bearing
surfaces, A-P radiographs of the pelvis should be taken at each follow-up and compared with previous
radiographs and correlated with the clinical assessment of the patient. If any radiographic changes are
observed, such as the occurrence of radiolucencies, bone resorption, or any changes in the position
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