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Pending evaluation.Concomitant medical device(s): (cn: 180-11-58, sn: (b)(4)) nv crown cup clsr hl w/ha 58 group 3; (cn: 164-01-14, sn: (b)(4)) element-stem, collarless w/ha, std offset, sz 14; (cn: 142-36-93, sn: (b)(4)) cocr fem head 36mm -3.5 offset 12/14.
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After further review of additional information received the following sections a3, b5, b7, d1, d4, d6a, d6b, d10, g2, g3, g4, g6, h2, h3, h4 and h6 have been updated accordingly.Section b5: the patient¿s index surgery for the right knee took place on (b)(6), 2012.She reportedly had a bmi of 48 around the time of the index surgery.Following the surgery, the patient missed numerous physical therapy sessions for various reasons.In (b)(6) 2013, the patient reportedly lost her footing and jammed her right knee.She fell again in (b)(6) 2013 and broke her arm.In (b)(6) 2013, the patient¿s bmi was reported to be 55.During a follow-up appointment in july 2014, the implants were reportedly in good position and did not show any signs of loosening.At this same appointment, it was noted that ¿within the last 6 months, she has fallen down several times¿ and she had ¿some pain and swelling¿ under her right knee.In (b)(6) 2018, the patient returned to their doctor complaining of right knee pain.Peri-hardware lucencies were reportedly found on the x-rays, which was ¿concerning for fracture¿ and ¿suspicious of right total knee arthroplasty tibial component hardware failure¿.In (b)(6) 2018, the patient saw another doctor who reviewed her x-rays, which allegedly showed loosening of the tibial baseplate.The patient was eventually revised on (b)(6), 2020.During the revision, the femoral component was found to be loose with bone loss on the medial and lateral femoral condyles, as well as anteriorly.The tibia was reportedly visibly loose and in a significant amount of flexion.Significant proximal tibial bone loss was noted under the tibial component, with collapse of the medial side and posterior aspect of the proximal tibia.The original evaluation of this case was completed before the patient was revised.The devices were temporarily provided to exactech for evaluation following the revision.Section d10: concomitant medical products optetrak cr femoral component, sz 2 (cat# 200-01-02 / sn# (b)(6)) optetrak cr tibial insert, sz 2, 9mm (cat# 200-22-09 / sn# (b)(6)) optetrak 3 peg patella, 29mm (cat# 200-02-29) (h3) the revision reported was likely the result of patient conditions, including the numerous falls and high bmi reported, which appear to have contributed to aseptic loosening of the tibial tray and femoral component.Rotational mismatch between the femoral component and tibial components likely contributed to joint instability, posterior articulation of the femoral component, and wear of both the tibial insert and tibial tray.The most probable root cause associated with the reported event of "prosthesis wear¿ is associated with material damage to a surface, usually involving progressive loss or displacement of material, due to relative motion between that surface and a contacting substance or substances.Furthermore, the most probable root cause associated with the reported event of "pain¿ is associated with undesirable or unexpected pain due to the presence of an implanted device, not caused by a post traumatic event (fall, car accident, etc.).
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