Longevity® Offset & Oblique Liners Surgical Technique Offset & Oblique Surgical Technique with Allofit Longevity® Offset and Oblique Liners Surgical Technique

Longevity® Offset & Oblique Liners Surgical Technique Introduction Complete Acetabular System Joint instability is an important issue in both primary and revision Total Hip Arthroplasty. Causes of instability reported in the literature include, but are not limited to, component misalignment, soft tissue laxity and impingement.1 Two acetabular liners designed to help address these issues are available for the Continuum®, Trilogy® IT and Allofit® IT* Acetabular systems. Oblique Liner The Longevity Highly Crosslinked Polyethylene Oblique Liner was designed to provide variable joint anteversion and...

Longevity® Offset & Oblique Liners Surgical Technique Shell Insertion For Instructions on implanting the Continuum, Trilogy IT and Allofit IT Acetabular Shells, please refer to the corresponding Acetabular Cup System Surgical Technique. Supplemental Screw Fixation In both primary and revision cases, screw fixation is highly recommended, as the use of any oblique or offset liner may lead to higher forces at the shell-to-bone interface. For instruction on placing screws into Continuum, Trilogy IT or Allofit IT acetabular shells, please see the corresponding Acetabular Cup System Surgical Technique....

Longevity® Offset & Oblique Liners Surgical Technique Liner Removal Follow standard surgical techniques for shell insertion if required. Special care should be taken not to lever against the Shell during Liner removal. • Upon removal of any Liner, inspect the taper and polyethylene locking mechanisms for damage. • Once the acetabular Shell taper has been deformed through assembly of a hard bearing insert, the Shell should not be used with another hard bearing insert. • Remove any membranes from the inside of Shell or screw holes. • Clean and inspect the Shell to ensure its integrity and stability....

Longevity® Offset & Oblique Liners Surgical Technique • Drive the screw into the pilot hole by hand until the Liner is lifted out of the Shell (Fig. 5). • Special care should be taken not to damage the Shell taper or locking mechanism during removal of the Liner. Longevity Oblique Liner Inserting the Provisional Oblique Liner • There are two styles of Provisional Liners. One with a Locking Screw that is independent of the Provisional Liner, and one with a Locking Screw permanently affixed within the Provisional Liner. The permanently affixed locking screw provisional liners are available in a...

Longevity® Offset & Oblique Liners Surgical Technique Trial Range of Motion • Insert a head/neck Provisional onto the implanted Stem or Rasp Cone Provisional and perform a trial reduction. • Check for stability and range of motion. • Remove the Provisional components. Note: Refer to Zimmer’s product compatibility website, www.productcompatibility.zimmer.com, to determine compatibility among all selected components. Inserting the Oblique Liner • Prior to inserting the Longevity Liner, ensure that the Shell interior is clean and dry. • Place the final polyethylene Liner into the implanted Shell...

Longevity® Offset & Oblique Liners Surgical Technique Verifying Oblique Liner Seating Verify that the Longevity Oblique Polyethylene Liner is properly seated by running a finger around the face of the Shell to ensure the anti-rotation tabs are flush relative to the Shell face (Fig. 9). Longevity Offset Liner Inserting the Provisional Offset Liner • There are two styles of Provisional Liners. One with a Locking Screw that is Independent of the Provisional Liner, and one with a Locking Screw Permanently Affixed within the Provisional Liner. The permanently affixed locking screw provisional liners...

Longevity® Offset & Oblique Liners Surgical Technique Trial Range of Motion • Insert a head/neck Provisional onto the implanted Stem or Rasp Cone Provisional and perform a trial reduction. • Check for stability and range of motion. • Remove the Provisional components. Note: Refer to Zimmer’s product compatibility website, www.productcompatibility.zimmer.com, to determine compatibility among all selected components. Inserting the Offset Liner • Prior to inserting the Longevity Liner, ensure that the Shell interior is clean and dry. • Place the final polyethylene Liner into the implanted Shell...

Longevity® Offset & Oblique Liners Surgical Technique Verifying Offset Liner Seating Smaller Sized Liners • Liner sizes 28 CC - 28 GG, 32 EE - 32 II and 36 HH - 36 KK include a lip that has window cut outs to allow for visualization of two anti-rotation tabs. Utilize the window cut outs to verify proper seating of the liner by ensuring that the anti-rotation tabs are flush relative to the Shell face (Fig. 12). Larger Sized Liners • Liner sizes 28 HH - 28 QU, 32 JJ - 32 VV, 36 LL - 36VV do not have a lip which allow for visualization of the anti-rotation tabs. Run a finger around the Shell face...

Longevity® Offset & Oblique Liners Surgical Technique Longevity Offset Liners Longevity Offset Liners 28mm Item Number Description Longevity Offset Liners 36mm Item Number Longevity Liner, 7mm Offset, 40 CC x 28 Longevity Liner, 7mm Offset, 50 HH x 36 Longevity Liner, 7mm Offset, 42 DD x 28 Longevity Liner, 7mm Offset, 52 II x 36 Longevity Liner, 7mm Offset, 44 EE x 28 Longevity Liner, 7mm Offset, 54 JJ x 36 Longevity Liner, 7mm Offset, 46 FF x 28 Longevity Liner, 7mm Offset, 56 KK x 36 Longevity Liner, 7mm Offset, 48 GG x 28 Longevity Liner, 7mm Offset, 58 LL x 36 Longevity Liner, 7mm Offset,...

Longevity® Offset & Oblique Liners Surgical Technique Offset Provisionals with Independent Locking Screws For use with Continuum, Trilogy IT and Allofit IT Systems 7mm Offset 28mm Prov. Liner Core Set KT-8794-005-28 Item Number Description 00-8734-008-28 00-8734-009-28 00-8734-010-28 Prov Liner, 7mm Offset, 48 GG x 28 Prov Liner, 7mm Offset, 50 HH x 28 Prov Liner, 7mm Offset, 52 II x 28 Prov Liner, 7mm Offset, 54 JJ x 28 Prov Liner, 7mm Offset, 56 KK x 28 Prov Liner, 7mm Offset, 58 LL x 28 Prov Liner, 7mm Offset, 60 MM x 28 Prov Liner, 7mm Offset, 62 NN x 28 Prov Liner, 7mm Offset, 64 OO x 28...