Osteoarthritis Clinical Trial
Official title:
Short Term Follow-up of Patient Implanted With the Metatarso-Phalangeal Prosthesis METIS®
The great toe is vital for normal, pain free ambulation. Decreased function associated with
osteoarthritis of the first matatarsal phalangeal joint (MTP I) often called Hallux Rigidis
or Hallux Limitus leading to a painful great toe. Patients experience pain during ambulation
especially during the push-off phase of gait. When surgery is indicated four techniques are
used for hallux rigidis; cheilectomie, resection arthroplasty, arthrodesis and implant
surgery (1). Endoprostetic implants are relatively new. Silicone Implants like the
arthroplasty developed by Swanson (2) resulted in foreign body reactions and periarticular
bone loss. Subsequent implants, in particular the metallic hemi arthroplasty with or without
polyethylene articulations, have been more successful (3). Still, implants are prone to wear
of the material and show higher rates of loosening and infection compared to other
techniques (4;5). In the last decades several new implants are described using two non
cemented pressfit components, of titanium alloy or ceramic (6-9). Between 2001 and 2004 the
investigators developed a new concept with instrumentation for exact alignment to prevent
for wear with loosening of the implant on the long term. The implant has bone-conserving
characteristics to enable arthrodesis as a salvage procedure. It is a completely modular
two-component press fit titanium alloy implant with polyethylene insert that can be used as
either for hemi-, total- or revision arthroplasty.
The purpose of this study is to have an overview of clinical status of the patient implanted
with the METIS® prosthesis at short term (2 years of follow-up). The objective of this study
is to evaluate the safety and efficacy of the Metatarso-Phalangeal prosthesis METIS® at
short term follow up.
n/a
Observational Model: Cohort, Time Perspective: Prospective
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