MAUDE Adverse Event Report: K2M, INC. DEFORMITY, UNIPLANAR SCREW; SIZE Ø6.5X45 MM; THORACOLUMBOSACRAL PEDICLE SCREW SYSTEM

Model Number	801-36545M
Medical Device Problem Code	Migration (4003)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/08/2021
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Device remains implanted in patient.
Event or Problem Description
It was reported that during a control x-ray, a mesa deformity uniplanar screw revealed it had slipped axially along rod.This will require revision surgery.
Additional Manufacturer Narrative
B1/h1 has been corrected from "adverse event and product problem" and "serious injury" to "product problem" and "malfunction".Visual, dimensional, material and functional analysis could not be performed as the device was not returned.It was reported that the patient did not experience any external trauma, post op activity is unknown, fusion is unknown, rod overhang was adequate, unknown if any issues during locking, and rod was fully reduced.No operative notes or x rays were provided.The screw was not returned for evaluation.Without x rays of the construct or the device itself, a cause cannot be determined.If further information becomes available, this investigation will be reopened and updated accordingly.
Event or Problem Description
It was reported via control x-ray that a mesa deformity uniplanar screw has slipped axially along the rod.Revision surgery has not been scheduled or performed at this time.

• Brand Name: DEFORMITY, UNIPLANAR SCREW; SIZE Ø6.5X45 MM
• Common Device Name: THORACOLUMBOSACRAL PEDICLE SCREW SYSTEM
• Manufacturer (Section D): K2M, INC.; 600 hope parkway se; leesburg VA 20175
• Manufacturer (Section G): K2M, INC.; 600 hope parkway se; leesburg VA 20175
• Manufacturer Contact: rita karan ; 2 pearl court; allendale, NJ 07401 ; 2017608000
• MDR Report Key: 12354757
• Report Number: 3004774118-2021-00258
• Device Sequence Number: 11737887
• Product Code: NKB
• UDI-Device Identifier: 10888857140301
• UDI-Public: 10888857140301
• Combination Product (Y/N): N
• Initial Reporter Country: NL
• PMA/510(K) Number: K141873
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 12/17/2021

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?: Yes
• Operator of Device: Health Professional
• Device Model Number: 801-36545M
• Device Catalogue Number: 801-36545M
• Device Lot Number: MJCU
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 08/10/2021
• Supplement Date Received by Manufacturer: 11/22/2021
• Initial Report FDA Received Date: 08/23/2021
• Supplement Report FDA Received Date: 12/17/2021
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Unknown