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MINERVA ORTOPEDICA E TRAUMATOLOGICA
A Journal on Orthopedics and Traumatology
PROSTHESIS CURRENT TRENDS IN MODERN HIP SURGERY TRENDS AND REAL INNOVATIONS IN THE 1° IMPLANT
Minerva Ortopedica e Traumatologica 2006 August;57(4):217-20
Minimally invasive surgery in hip arthroplasty using dedicated nanos stem for partial neck preservation
Parente F., Auliso M., Gardelin P.
Istituto Clinico S. Siro, Milano
Today total hip arthroplasty makes use of new surgical solutions and new materials to be more conservative towards bone stock and soft tissue. The tissue sparing surgery (TSS) surgical philosophy express very well these concepts. It’s possible to preserve the bone stock using less invasive femoral stems, such as for complete or partial preservation of the femoral neck. With these types of implants is easier to perform surgical approaches more respectful of soft tissue compared with traditional stems. Further-more, the preservation of the femoral neck allows an easier reconstruction of hip geometries. Our experience begins in September 2002 with Mayo® (Zimmer Inc, Warsaw, IN, USA) stem and successively with Nanos® (Plus Ortho-pedics) stem. From September 2002 to Septem-ber 2006 we have performed 168 implants with conservative stem in combination with minimally invasive technique. The surgical approach is the postero-lateral with the preservation of pyriform muscle. Preliminary results are encouraging, the minimally invasive approach allows a smaller blood loss and a faster functional rehabilitation. Functional results are better in the immediate postoperative time than with the traditional approach, but in the middle-long period tends to be similar. Monitoring of the results during the time will be the basic element for the decisive validation of the system.