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Fretting and Corrosion in Modular Shoulder Arthroplasty: A Retrieval Analysis.

Eckert JA, Mueller U, Jaeger S, Panzram B, Kretzer JP - Biomed Res Int (2016)

Bottom Line: Adverse effects caused by metal debris and subsequent elevated serum metal ion levels are frequently reported in total hip arthroplasty.The prevalence of fretting and corrosion was confirmed in this cohort.A weak correlation between time to revision and increased levels of tribocorrosion was seen.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Biomechanics and Implant Research, Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany.

ABSTRACT
Tribocorrosion in taper junctions of retrieved anatomic shoulder arthroplasty implants was evaluated. A comparison of the tribocorrosion between cobalt-chromium and titanium alloy stems was conducted and the observations were correlated with the individual's clinical data. Adverse effects caused by metal debris and subsequent elevated serum metal ion levels are frequently reported in total hip arthroplasty. In total shoulder arthroplasty, to date only a small number of retrieval analyses are available and even fewer address the issue of tribocorrosion at the taper junctions. A total of 36 retrieved hemiarthroplasties and total shoulder arthroplasties were assessed using the modified Goldberg score. The prevalence of fretting and corrosion was confirmed in this cohort. Titanium stems seem to be more susceptible to damage caused by tribocorrosion than cobalt-chromium stems. Furthermore, stemless designs offered less tribocorrosion at the taper junction than stemmed designs. A weak correlation between time to revision and increased levels of tribocorrosion was seen. Whether or not tribocorrosion can lead to adverse clinical reactions and causes failure of shoulder arthroplasties remains to be examined.

No MeSH data available.


Related in: MedlinePlus

Comparison of the damage scores for the head and stem taper depending on stem design. Only titanium stems are included.
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fig6: Comparison of the damage scores for the head and stem taper depending on stem design. Only titanium stems are included.

Mentions: Of the 36 retrieved implants, 30 (83%) had a stemmed and 6 (17%) a stemless fixation. All stemless implants were made of Ti alloy. In designs with a stem, the stem material was Ti in 17 (57%) cases and CoCr in 13 (43%) cases. To compare the effect of the stem fixation, only Ti tapers were included (Figure 1). The stemmed designs showed significantly higher tribocorrosion (p = 0.002) for the stem tapers (Figure 6). Time to revision of stemless (2.3 ± 1.4 years) and stemmed (3.4 ± 3.6 years) designs was comparable. For the head tapers, stemless designs showed a tendency for less tribocorrosion (p = 0.052), although the differences were not statistically significant.


Fretting and Corrosion in Modular Shoulder Arthroplasty: A Retrieval Analysis.

Eckert JA, Mueller U, Jaeger S, Panzram B, Kretzer JP - Biomed Res Int (2016)

Comparison of the damage scores for the head and stem taper depending on stem design. Only titanium stems are included.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4940522&req=5

fig6: Comparison of the damage scores for the head and stem taper depending on stem design. Only titanium stems are included.
Mentions: Of the 36 retrieved implants, 30 (83%) had a stemmed and 6 (17%) a stemless fixation. All stemless implants were made of Ti alloy. In designs with a stem, the stem material was Ti in 17 (57%) cases and CoCr in 13 (43%) cases. To compare the effect of the stem fixation, only Ti tapers were included (Figure 1). The stemmed designs showed significantly higher tribocorrosion (p = 0.002) for the stem tapers (Figure 6). Time to revision of stemless (2.3 ± 1.4 years) and stemmed (3.4 ± 3.6 years) designs was comparable. For the head tapers, stemless designs showed a tendency for less tribocorrosion (p = 0.052), although the differences were not statistically significant.

Bottom Line: Adverse effects caused by metal debris and subsequent elevated serum metal ion levels are frequently reported in total hip arthroplasty.The prevalence of fretting and corrosion was confirmed in this cohort.A weak correlation between time to revision and increased levels of tribocorrosion was seen.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Biomechanics and Implant Research, Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118 Heidelberg, Germany.

ABSTRACT
Tribocorrosion in taper junctions of retrieved anatomic shoulder arthroplasty implants was evaluated. A comparison of the tribocorrosion between cobalt-chromium and titanium alloy stems was conducted and the observations were correlated with the individual's clinical data. Adverse effects caused by metal debris and subsequent elevated serum metal ion levels are frequently reported in total hip arthroplasty. In total shoulder arthroplasty, to date only a small number of retrieval analyses are available and even fewer address the issue of tribocorrosion at the taper junctions. A total of 36 retrieved hemiarthroplasties and total shoulder arthroplasties were assessed using the modified Goldberg score. The prevalence of fretting and corrosion was confirmed in this cohort. Titanium stems seem to be more susceptible to damage caused by tribocorrosion than cobalt-chromium stems. Furthermore, stemless designs offered less tribocorrosion at the taper junction than stemmed designs. A weak correlation between time to revision and increased levels of tribocorrosion was seen. Whether or not tribocorrosion can lead to adverse clinical reactions and causes failure of shoulder arthroplasties remains to be examined.

No MeSH data available.


Related in: MedlinePlus