Rheumatology: Current Research

Rheumatology: Current Research
Open Access

ISSN: 2161-1149 (Printed)


PSI: New instruments for a new generation of knee arthroplasty

5th International Conference of Orthopedic Surgeons and Rheumatology

June 16-17, 2016 Alicante, Spain

Cesare Chemello

Asiago Hospital, Italy

Posters & Accepted Abstracts: Rheumatology (Sunnyvale)

Abstract :

Introduction: Custom Made Surgery seems to be the future of total knee replacement (TKR). â�?�?Patients specific instrumentâ�? (PSI) helps the surgeon to perform a real tissue sparing surgery (TSS) and it allows to customize the technique and to standardize the results. Usually rheumatologic knees have important axial deviation and important bone loss, for this reason it is difficult to use a traditional prosthesis. The aim of our study was to illustrate the advantages and disadvantages of PSI in a prospective study of 100 pre-navigated total knee replacements. Materials & Methods: 100 patients, affected by knee advance osteoarthritis and by axial deviation exceeding 3�?°, underwent to TKR (Advance Prophecy Wright). In the pre-operative examination, a TC was performed following strict protocols. We used a strict radiological protocol Post operative axes were compared to the planed ones and the following angles were examined: between anatomical and mechanical femoral axis (�?±-AAM), femoral flexion shield (FSF), tibial slope (ST) and frontal angle of the tibial component (�?±-CT). Negative outcome was considered as axial deviations �?± 2 for FSF, ST and �?±3 for �?±-CT e �?±-AAM. Results: All patients achieved an excellent clinical and functional result according to KSS. Unplanned gender prosthesis was implanted in two patients. In only 1 case we changed the component size (femoral). In two cases, a 17 mm insert was necessary. Final knee flexion was necessary always more than 105�?°. Only 2 errors of the final �?±-AAM Conclusion: This technique allows performing a TSS surgery, to reduce surgical time, to obtain optimal alignments. This technique also allows converting a challenging knee in a normal knee.

Biography :

Email: cesarechemello@gmail.com