Zimmer Biomet Persona Manual

Also see for Persona: SURGICAL TECHNIQUE

Zimmer Biomet Persona Manual Manual pdf 16 page image

14 | Persona The Personalized Knee Surgical TechniqueResect Proximal Tibia (cont.)Position Alignment GuideTo improve the exposure of the tibial surface, retractthe tibia anteriorly. Carefully position the retractoragainst the posterior cortex of the tibia subperiosteallyto prevent neurovascular injury. Retract the patellalaterally. Adjust the EM alignment guide to theapproximate length of the tibia. Place the spring armsof the EM ankle clamp around the ankle proximal tothe malleoli. Align the vertical slot in the cut guide withthe medial third of the tibial tubercle.Technique Tip: Care should be taken when pinninginto the tibia to avoid perforating the posterior cortex.Adjust the height of the cut guide to the approximatedesired location. Use the engraved line on the top ofthe cut guide to align the rotational and M/L placementguide (Figure 20b). A 3.2 mm pin or screw may beinserted through the 12 mm vertical slot in the cutguide to secure the desired M/L and rotational positionof the proximal portion of the guide (Figure 20a).Note: This pin will need to be removed to allow the"+2" or "+4" mm shifts with the cut guide.Align the EM alignment guide with the mechanicalaxis of the tibia (Figure 21a). The longitudinal axis willusually lie just medial to the mid-point of the tibialtubercle and be centered in line with the intercondylareminence. The distal end of the EM alignment guideshould be positioned about 5 mm–10 mm medial tothe midpoint between the palpable medial and lateralmalleoli. The short vertical engraved lines on thevarus/valgus adjustment rail are incremented by 5mm to aid in setting the desired varus/valgus positionof the EM alignment guide (Figure 21b). Excessive softtissue or poor exposure or visualization can make itdifficult to palpate bony landmarks so care should betaken to ensure accurate cuts.Figure 20b Figure 21bFigure 20aFigure 21aAP Axis5 mm3.2 mm x 75 mm Trocar Tipped Drill Pin(2.5 mm hex)00-5901-020-00Pin Screw Inserter00-5901-021-00Persona Tibial Cut GuideRight - 7°42-5399-052-07Persona EM Proximal Tube42-5399-001-00Persona EM Distal Rod42-5399-002-00Persona EM Ankle Clamp42-5399-003-003.2 mm Drill00-5120-085-00