Fresh primary rupture of the anterior cruciate ligament, no more than 21 days old on the day of surgery. See also the instructions for use as well as guidelines.
Depending on the severity of the injury and intraoperative findings, the arthroscopic procedure generally takes about 45 minutes.
The most important difference in comparison to a conventional cruciate ligament reconstruction is the relatively small time window: Ligamys should be used within 21 days following a cruciate ligament rupture, since the regeneration potential of the ligament decreases over time.
Ligamys was designed to remain in the body over the long term; in most cases, all components of the implant can be left in the joint. After treatment has been completed (about 6 months) or if clinically required, the monobloc can be removed in an outpatient procedure. The polyethylene thread remains in the knee joint and grows together with the cruciate ligament.
No, the Ligamys implant only aids in stabilizing the knee. This helps create the mechanical preconditions for the cruciate ligament to grow back together, however without suturing together the ruptured ends of the ligament. The ends are only approximated using an auxiliary suture, so that any growing together can take place at the correct site.
As with any surgery, there is a risk also in the case of treatment with Ligamys that it will not yield the desired successful result. In such cases, a conventional cruciate ligament replacement can be performed at a later point in time.
Yes, if treatment with Ligamys does not yield the desired treatment success, an ACL reconstruction is still possible. Neither the patellar nor the hamstring or quadriceps tendon is affected by the Ligamys procedure, and these are thus still available as graft sources.
In most patients, the monobloc does not cause any significant impairment in the tibia. In individual cases, a small bump on the anterior edge of the tibia underneath the knee joint can be felt. This is not problematic and is completely normal. However, if the monobloc is bothersome or, in rare cases, cause pain, it can be removed in an outpatient procedure.
Only small incisions are needed for the arthroscopic Ligamys implantation in order to introduce the surgical instruments into the joint. The two access incisions on the knee joint are each about 1.5 cm long, and an approximately 4-cm long incision is needed to implant the metal sleeve into the lower leg (monobloc). In most patients, the scars are unobtrusive after completion of the healing and hardly visible.
The implant components consist of materials that have been proven over the years in the field of orthopaedics: The thread is made of the synthetic material polyethylene, and the plate at the upper end is made of titanium. The monobloc in the tibia is made of medical implant-grade steel. Patients who have a hypersensitivity (allergy) to certain metals should discuss this with the attending doctor. For further information, please see the Instructions for Use.
Together with the physical therapists at the Inselspital Bern in Switzerland, a rehab program was developed for follow-up treatment of Ligamys implantations, and this program is intended as a guideline. The brochure is available for download ((LINK)).
Yes, later MRI examinations are possible under certain conditions (this is known as MR Conditional). More information about the limitations of Ligamys in an MRI environment is listed in the Instructions for Use under point 7.
ligaments) as well? Ligamys was specifically developed for the treatment of anterior cruciate ligament ruptures and is currently only used for this purpose.
Yes. In most cases, patients treated with Ligamys were usually able to resume their athletic activities. However, it should be noted that the regeneration process is individual, and thus no general information regarding timing or activities can be provided. The exact point at which a patient can return to sports should be determined in consultation with the attending physical therapist.
The Ligamys implant may be used only by doctors who have completed the corresponding training. Ligamys is therefore used only in select hospitals, but the number of approved hospitals is continuously growing. The current list of surgical centres can be found under "Centres"