Dissociation of Acetabular Polyethylene Liners With a Morse Taper Design
| Autor: | Wesley H. Mayes, Jeffrey B. Stambough, Paul K. Edwards, Asa W. Shnaekel, Simon C. Mears, C. Lowry Barnes |
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| Rok vydání: | 2020 |
| Předmět: |
Reoperation
musculoskeletal diseases medicine.medical_specialty Dissociation (neuropsychology) Arthroplasty Replacement Hip Dissociative Disorders Prosthesis Design Hip replacement (animal) Second revision 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine medicine Humans Orthopedics and Sports Medicine Hip pain Morse taper 030222 orthopedics business.industry technology industry and agriculture Acetabulum Polyethylene equipment and supplies Prosthesis Failure Surgery Acetabular component chemistry Locking mechanism Hip Prosthesis business |
| Zdroj: | The Journal of Arthroplasty. 35:3754-3757 |
| ISSN: | 0883-5403 |
| DOI: | 10.1016/j.arth.2020.06.068 |
| Popis: | Background Polyethylene liner dissociation is an uncommon complication of hip replacement. Dissociation has been associated with particular acetabular component designs. This study reviewed acetabular liner dissociations in a specific modular cup with a Morse taper locking mechanism that has not been previously reported. Methods The senior author performed 655 primary total hip arthroplasties with one particular design of acetabular component using Class A polyethylene liners and metal head articulation. Cases with revision surgery performed for acetabular liner dissociation were reviewed. Results Seven of 655 patients with this cup underwent revision surgery for a dissociated liner. Liner dissociation occurred at a mean of 73 months postoperatively. Patients presented with new-onset hip pain or squeaking, 4 of which developed symptoms acutely. Two patients treated with polyethylene liner exchange into the same cup required a second revision surgery for recurrent dissociation. Conclusion Polyethylene liner dissociation is an infrequent but possible complication associated with modular acetabular components using a Morse taper locking. Providers should be vigilant with long-term follow-up of patients with this acetabular system for patient complaints of catching or squeaking. Patients treated for liner dissociation should not have a new liner placed into the same acetabular shell given the risk for further dissociation. |
| Databáze: | OpenAIRE |
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