MAUDE Adverse Event Report: ARTHREX, INC. UNIVERS REVERS GLENO 36 +4 LAT; SHOULDER PROSTHESIS, REVERSE CONFIGURATION

Model Number UNIVERS REVERS GLENO 36 +4 LAT

Device Problem Device Dislodged or Dislocated (2923)

Patient Problems Pain (1994); Loss of Range of Motion (2032); Toxicity (2333)

Event Date 07/03/2018

Event Type  Injury  

Manufacturer Narrative

Complaint confirmed.The returned ar-9504s-04 met all as-received specifications.Visual evaluation revealed superficial scratches on the underside of the glenosphere that were concentric with the male taper axis.Fretting was noted on the taper, approximately 3.2 mm from the distal end of the male taper.No major surface damage was present on the distal end of the male taper.Superficial scratches to the articulating surface were observed.The most likely cause(s) of the glenosphere migrating include non-compliance to the post op protocol, or post-op trauma to the surgical site.Per device directions for use: loosening of the implant as a result of changed conditions in load transfer, respectively, fatigue wear and breakage of the cement bed and/or tissue reaction to the implant.Loosening is frequently a consequence of one or several of the listed risk conditions, but can also be caused by inadequate anchoring technique.Failure to properly align and completely seat the components together can lead to disassociation.Proper technique must be followed to ensure there is no bony or soft tissue interference between modular components.All screws must be adequately tightened to ensure they are recessed to prevent a mechanical interference between modular components.Thoroughly clean and dry tapers, prior to attachment of modular components to avoid crevice corrosion and improper seating.Glenosphere forceps are required to verify integrity of the morse taper connection between glenosphere and baseplate.

Event Description

It was reported by the sales rep that there was a revision of a right total shoulder case on (b)(6) 2018.The original date of surgery was (b)(6) 2015.The revision was due to limited range of motion and pain.Seven devices were removed from the patient; there was proximal "metalosis" in the shoulder joint and the glenosphere had disassociated from the baseplate.The following arthrex replacement devices were implanted: ar-9504l-04, univers reverse glenosphere, lot 170142415; ar-9502f-42cpc, univers reverse suturecup, lot 170117105; and ar-9503l-06, univers reverse humeral insert, lot 170170513.Additional information obtained 11/8/18: sales rep has confirmed that his original report stating 7 devices were explanted was incorrect.Only the following three devices were explanted: ar-9503s-06 humeral insert (lot 2601221201), ar-9502-36cpc cup (lot 2501407907) and ar-9504s-04 glenosphere (lot 2501346003).All three devices are being returned to arthrex for evaluation.According to the medical records during the revision surgery the surgeon discovered the glenosphere to be completely disassociated from the baseplate.The surgeon also noted a significant amount of wear on the inferior aspect of the humeral poly insert.The glenosphere, humeral insert and humeral cup were removed.The surgeon assessed the baseplate and stem and decided that they were stable and not otherwise disrupted.The surgeon then decided to replace the worn components that were removed with new components and chose to increase the size of the glenosphere cup and insert from a 36 to a 42 for added stability.

Event Description

It was reported by the sales rep that there was a revision of a right total shoulder case on july 3, 2018.The original date of surgery was may 7, 2015.The revision was due to limited range of motion and pain.Seven devices were removed from the patient; there was proximal metalosis in the shoulder joint and the glenosphere had disassociated from the baseplate.The following arthrex replacement devices were implanted: ar-9504l-04, univers reverse glenosphere, lot 170142415; ar-9502f-42cpc, univers reverse suturecup, lot 170117105; and ar-9503l-06, univers reverse humeral insert, lot 170170513.Additional information obtained 11/8/18: sales rep has confirmed that his original report stating 7 devices were explanted was incorrect.Only the following three devices were explanted: ar-9503s-06 humeral insert (lot 2601221201), ar-9502-36cpc cup (lot 2501407907) and ar-9504s-04 glenosphere (lot 2501346003).All three devices are being returned to arthrex for evaluation.According to the medical records during the revision surgery the surgeon discovered the glenosphere to be completely disassociated from the baseplate.The surgeon also noted a significant amount of wear on the inferior aspect of the humeral poly insert.The glenosphere, humeral insert and humeral cup were removed.The surgeon assessed the baseplate and stem and decided that they were stable and not otherwise disrupted.The surgeon then decided to replace the worn components that were removed with new components and chose to increase the size of the glenosphere cup and insert from a 36 to a 42 for added stability.Additional information obtained 1/7/19: upon further review of the medical records provided by the patient, the glenosphere used for this surgery was not compatible with the baseplate.Arthrex¿s surgical technique guide provides a compatibility matrix which identifies the acceptable baseplate and glenosphere coupling and notes that the medium baseplate (ar-9120-02) is not compatible with a size 36 +4 glenosphere (ar-9504s-04).Arthrex¿s directions for use states that proper selection and placement of the implant are important considerations in the successful utilization of this device and premature loosening and complications can occur with an unsuitable selection of the implant size.

Manufacturer Narrative

Complaint confirmed.Returned ar-9504s-04 met all as-received specifications.Visual evaluation revealed superficial scratches on underside of glenosphere that were concentric with male taper axis.Fretting noted on the taper, approximately 3.2 mm from the distal end of male taper.No major surface damage present on the distal end of the male taper.Superficial scratches to the articulating surface observed.The glenosphere used for this surgery was not compatible with the baseplate.Arthrex¿s surgical technique guide provides a compatibility matrix which identifies the acceptable baseplate and glenosphere coupling and notes that the medium baseplate (ar-9120-02) is not compatible with a size 36 +4 glenosphere (ar-9504s-04).Arthrex¿s directions for use states that proper selection and placement of the implant are important considerations in the successful utilization of this device.Premature loosening and complications can occur with an unsuitable selection of the implant size.

• Brand Name: UNIVERS REVERS GLENO 36 +4 LAT
• Type of Device: SHOULDER PROSTHESIS, REVERSE CONFIGURATION
• Manufacturer (Section D): ARTHREX, INC.; 1370 creekside boulevard; naples FL 34108 1945
• MDR Report Key: 8129841
• MDR Text Key: 129237598
• Report Number: 1220246-2018-00776
• Device Sequence Number: 1
• Product Code: PHX
• UDI-Device Identifier: 00888867061408
• UDI-Public: 00888867061408
• Combination Product (y/n): N
• PMA/PMN Number: K142863
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative,distri
• Type of Report: Initial,Followup
• Report Date: 03/06/2019

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Expiration Date: 09/30/2018
• Device Model Number: UNIVERS REVERS GLENO 36 +4 LAT
• Device Catalogue Number: AR-9504S-04
• Device Lot Number: 2501346003
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 02/21/2019
• Initial Date Manufacturer Received: 11/07/2018
• Initial Date FDA Received: 12/04/2018
• Supplement Dates Manufacturer Received: 11/07/2018
• Supplement Dates FDA Received: 03/06/2019
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Other
• Patient Age: 78 YR
• Patient Weight: 70