Model-based roentgen stereophotogrammetric analysis using elementary geometrical shape models: 10 years results of an uncemented acetabular cup component

Journal article


Publication Details

Author(s): Jacobsen A, Seehaus F, Hong Y, Cao H, Schuh A, Forst R, Sesselmann S
Journal: BMC musculoskeletal disorders
Publication year: 2018
Volume: 19
Journal issue: 1
ISSN: 1471-2474


Abstract

BACKGROUND: Non-cemented acetabular cup components demonstrated different clinical performance depending on their surface texture or bearing couple. However, clinical osseointegration needs to be proved for each total joint arthroplasty (TJA) design. Aim of this study was to detect the in vivo migration pattern of a non-cemented cup design, using model-based roentgen stereophotogrammetric analysis with elementary geometrical shape models (EGS-RSA) to calculate early cup migration.
METHODS: Interchangeable applicability of the model-based EGS-RSA method next to gold standard marker-based RSA method was assessed by clinical radiographs. Afterwards, in vivo acetabular cup migration for 39 patients in a maximum follow up of 120 months (10 years) was calculated using model-based EGS-RSA.
RESULTS: For the axes with the best predictive capability for acetabular cup loosening, mean (±SD) values were calculated for migration and rotation of the cup. The cup migrated 0.16 (±0.22) mm along the cranio-caudal axis after 24 months and 0.36 (±0.72) mm after 120 months, respectively. It rotated - 0.61 (±0.57) deg. about the medio-lateral axis after 24 months and - 0.53 (±0.67) deg. after 120 months, respectively.
CONCLUSIONS: Interchangeable applicability of model-based EGS-RSA next to gold standard marker-based RSA method could be shown. Model-based EGS-RSA enables an in vivo migration measurement without the necessity of TJA specific surface models. Migration of the investigated acetabular cup component indicates significant migration values along all the three axes. However, migration values after the second postoperative year were within the thresholds reported in literature, indicating no risk for later aseptic component loosening of this TJA design.


FAU Authors / FAU Editors

Cao, Han
Lehrstuhl für Orthopädie mit Orthopädischer Chirurgie
Forst, Raimund Prof. Dr. med.
Lehrstuhl für Orthopädie mit Orthopädischer Chirurgie
Hong, Yutong
Lehrstuhl für Orthopädie mit Orthopädischer Chirurgie
Jacobsen, Anne
Chirurgische Klinik
Seehaus, Frank Dr.
Lehrstuhl für Orthopädie mit Orthopädischer Chirurgie
Sesselmann, Stefan Dr.
Lehrstuhl für Orthopädie mit Orthopädischer Chirurgie


External institutions with authors

Kliniken des Landkreises Neumarkt i.d.OPf.


How to cite

APA:
Jacobsen, A., Seehaus, F., Hong, Y., Cao, H., Schuh, A., Forst, R., & Sesselmann, S. (2018). Model-based roentgen stereophotogrammetric analysis using elementary geometrical shape models: 10 years results of an uncemented acetabular cup component. BMC musculoskeletal disorders, 19(1). https://dx.doi.org/10.1186/s12891-018-2259-4

MLA:
Jacobsen, Anne, et al. "Model-based roentgen stereophotogrammetric analysis using elementary geometrical shape models: 10 years results of an uncemented acetabular cup component." BMC musculoskeletal disorders 19.1 (2018).

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Last updated on 2019-22-03 at 08:38