Name: Universal Glenoid™ Convertible Baseplate for aTSA in the Dysplastic Glenoid
Uploaded: 2021-04-07T00:00:00Z
Channel: Arthrex
Description: Tim R. Lenters, MD (Grand Rapids, MI), discusses how to use the Universal Glenoid™ convertible baseplate when addressing glenoid dysplasia during anatomic total shoulder arthroplasty (aTSA).

<p>Tim R. Lenters, MD (Grand Rapids, MI), discusses how to use the Universal Glenoid™ convertible baseplate when addressing glenoid dysplasia during anatomic total shoulder arthroplasty (aTSA).</p>

Not Hidden

English  - en

video

VID1-002157-en-US | A | Universal Glenoid™ Convertible Baseplate for aTSA in the Dysplastic Glenoid

Tim Lenters

Human

Surgeons presenting one or more clinical cases

Chirurg:innen präsentieren einen oder mehrere klinische Fälle

Videos von Fallpräsentationen

Case Presentation Videos

Cirurgiões que apresentam um ou mais casos clínicos.

Vídeos apresentações de casos

Cirujanos que presentan uno o más casos clínicos.

Video presentaciones de casos

Universal Glenoid™ Convertible Baseplate for aTSA in the Dysplastic Glenoid

I'm Tim Winters from Grand Rapids, Michigan. I'd like to present a case of use of the convertible universal base plate for management of complex glenoid deformity. I have a case of a 64 year old male with primary glenohumeral joint arthritis. He presents with progressively worsening shoulder pain that's failed to respond to all conservative efforts of treatment. His motion shows Ford elevation of 120 degrees, and his external rotation is 20 degrees. Preoperative X-rays show advanced glenohumeral joint arthritis with flattening of the joint, cystic changes in the glenoid, a B2 deformity, and posterior subluxation of the humeral head in relation to the glenoid Centerline. A CT scan shows similar findings. Note the cystic changes, especially in the posterior half of the glenoid and the element of dysplasia as seen on the coronal image. Use of an all polyethylene glenoid component in situations such as this would require preservation of subchondral bone, an ability to restore normal version and anatomy. It also requires good bone in the vault. If these criteria cannot be met with use of all polythene implants, I would typically utilize either a reverse implant or the convertible universal base plate for similar situations. The Arthrex Convertible Universal Base Plate has shown eight years of good clinical outcome data. It is important to avoid overstuffing the joint line with this particular device. Use of VIP can help the surgeon manage the joint line and avoid over lateralizing the joint line. Use of the glenoid, if it's available, can help the surgeon reorient the proper joint line and avoid overstuffing the joint. Here's the VIP plan that shows proper restoration of version. Proper positioning of the joint line so that it's not overstuffed. I'll typically try to position that joint line about 2 to 3mm off the surface of that subchondral bone, in an effort to predict restoration of the normal joint line. You can also see in this particular situation that positioning the joint line appropriately requires removal of bone anteriorly from this glenoid. The implant should be positioned along the 12:00 to 6:00 axis. The 12:00 position can be identified as the point on the posterior aspect of the coracoid process. When the implant is positioned along this axis, the anterior margin of the implant should nicely align with the anterior margin of the glenoid. This particular case required version correction from -12 degrees to minus five degrees. Intraoperative photographs show use of the VIP targeting guide to position the guide pin appropriately in the glenoid vault. Shows reaming through the subchondral surface to prepare the glenoid for implantation of the base plate, and subsequently the polyethylene insert. Post-operative x rays show nice restoration of the proximal humeral sphere with use of the Eclipse implant. Shows proper rebalancing of the humeral head along the glenoid Centerline, and restoration of glenoid version. Here are the patient outcomes at three months. In summary, the convertible universal base plate is a powerful implant to manage. Glenoid deformity does not require preservation of subchondral bone should be considered for patients who have cystic changes in their glenoid. Use of VIP with this device does seem essential to avoid overstuffing and over lateralizing the joint line. Thank you for allowing me to present this case, and I hope you find it useful for similar patients that you may have.

Universal Glenoid™ Convertible Baseplate for aTSA in the Dysplastic Glenoid

Related Pages

Arthroplasty Shoulder

Univers Revers™ Total Shoulder System

Product

Arthroplasty Shoulder

Virtual Implant Positioning^™ (VIP^™) System

Product

Universal Glenoid™ Convertible Baseplate for aTSA in the Dysplastic Glenoid

Related Pages

Arthroplasty Shoulder

Univers Revers™ Total Shoulder System

Product

Arthroplasty Shoulder

Virtual Implant Positioning™ (VIP™) System

Product

Virtual Implant Positioning^™ (VIP^™) System