Three-step technique for implantation of rotating hinge knee prostheses : Demonstration using the Enduro prosthesis.

Three-step technique for implantation of rotating hinge knee prostheses : Demonstration using the Enduro prosthesis. Oper Orthop Traumatol. 2020 Jul 10;: Authors: Fink B, Stefanou D Abstract OBJECTIVE: Implantation of an axis-guided knee prosthesis with consideration of the joint line and balanced flexion and extension gap to reduce the mechanical load on the prosthesis axis and to improve the movement of the prosthesis. INDICATIONS: Distinct unilateral instability due to ligament insufficiency in association with knee prostheses. Primary implantation of axis-guided knee prostheses with pronounced axial malalignment (>20-25° valgus or varus malalignment) or/and severe flexion contracture > 40°. Replacement of prosthesis with nonsignificant imbalance between flexion and extension gap. CONTRAINDICATIONS: Clearly unstable flexion gap such that the extension gap cannot be adjusted appropriately. Significant femoral bone defects requiring distal femoral replacement prostheses. SURGICAL TECHNIQUE: Reconstruction of the tibial platform with the trial prosthesis with regard to height in relation to the tip of the fibula. Determination of the femoral prosthesis size. Adjustment of the anteroposterior (AP) cutting block of the selected size, referenced anteriorly and in correct rotation. Determination of the flexion gap with spacers using the stable side of the collateral ligaments. Positioning the distal cuttin...
Source: Operative Orthopadie und Traumatologie - Category: Orthopaedics Authors: Tags: Oper Orthop Traumatol Source Type: research