The effect of glenoid component version and humeral polyethylene liner rotation on subluxation and impingement in reverse shoulder arthroplasty

Permeswaran, Vijay N.; Caceres, Andrea P; Goetz, Jessica E.; Anderson, Donald D.; Hettrich, Carolyn M.

doi:10.1016/j.jse.2017.03.027

Cited by 29 publications

(32 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Section 3a/b shows a failed TSA 10 years after insertion before and after revision to RSA [51] . Subluxation is defined as the distance between the polyethelene liner COR and the glenosphere COR [47,48] . Four models varying in soft tissue inclusion were created.…”

Section: Public Abstractmentioning

confidence: 99%

“…Infection and inflammation are among the other most common post RSA complications, and are common complications for any implant post insertion. of soft tissues to models investigating implant geometry variations in RSA [46,47,48].…”

Section: Pre-and Post-operative Perspectivesmentioning

confidence: 99%

“…Building on prior dynamic finite element analysis of RSA [46,47,48], the goal of this study was to investigate the effects of glenoid lateralization and liner design on shoulder stability for a new implant system from Zimmer Biomet. Other additions to the modeling approach were the inclusion of superior elements of the scapula (the acromion and coronoid process) along with the introduction of an explicit deltoid muscle structure.…”

Section: Pre-and Post-operative Perspectivesmentioning

confidence: 99%

“…. Subluxation is defined as the distance between the polyethelene liner COR and the glenosphere COR [47,48].…”

Section: Pre-and Post-operative Perspectivesmentioning

confidence: 99%

“…The humeral bone, scapula, and deltoid were also edited in Geomagic to provide smoother surface geometries that were free of any holes or anomalous features. The deltoid anatomy was approximated by more simplified basic geometry, as had previously been done for the subscapularis and infraspinatus [47,48]. The glenosphere and humeral components were virtually inserted following manufacturer-recommended guidelines and checked by a surgeon (Fig.19) [63].…”

Section: Editing Insertion and Alignmentmentioning

confidence: 99%

See 4 more Smart Citations

The effects of implant design variations on shoulder instability following reverse shoulder arthroplasty

Caceres¹

View full text Add to dashboard Cite

possible without Vijay Permeswaran who not only set the groundwork that this research was built upon, but was a great mentor, teacher, and help especially when I was just starting out at the lab. Dr. Brendon Patterson also played a pivotal role, acquiring the Zimmer system used during testing as well as offering his time to provide critical medical insight towards the shoulderimplant system. I'd also like to thank past and present members of the University of Iowa Orthopedic Biomechanics lab that I had the pleasure of working with. Specifically, I'd like to give a shout out to Steven Long and Keven Dibbern for helping with diagnostics, as well as introducing me to several techniques used in my thesis. I'd like to acknowledge Dr. Jess Goetz, and Dr. Carolyn Hettrich, members of the previous shoulder team, for offering valuable perspectives and insight about the subject. Lastly, I would like to thank my friends and family for supporting me, specifically my mother for her feedback throughout the writing process, my dad for his life advice, and my grandparents for their encouragement.

show abstract

Section: Public Abstractmentioning

confidence: 99%

Section: Pre-and Post-operative Perspectivesmentioning

confidence: 99%

Section: Pre-and Post-operative Perspectivesmentioning

confidence: 99%

“…. Subluxation is defined as the distance between the polyethelene liner COR and the glenosphere COR [47,48].…”

Section: Pre-and Post-operative Perspectivesmentioning

confidence: 99%

Section: Editing Insertion and Alignmentmentioning

confidence: 99%

See 3 more Smart Citations

The effects of implant design variations on shoulder instability following reverse shoulder arthroplasty

Caceres¹

View full text Add to dashboard Cite

show abstract

Influence of sidewall retention and interference fit in total ankle replacement on implant‐bone micromotion: A finite element study

Johnson,

Clarke,

de Cesar Netto

et al. 2024

Journal Orthopaedic Research

Self Cite

View full text Add to dashboard Cite

The success of uncemented total ankle replacement (TAR) is linked to initial stability because bony ingrowth depends upon limited early micromotion. Tibial implant design fixation features resist micromotion aided by bony sidewall retention and interference fit. Our goal was to investigate factors influencing implant‐bone micromotion in TAR. Two TAR tibial components were virtually inserted into CT‐derived computer models of two distal tibias from patients with end‐stage ankle arthritis. Density‐based inhomogeneous material assignment was used to model bone compaction during press‐fit. Finite element analysis (FEA) was used to simulate three fixation cases: (1) no sidewalls + line‐to‐line fit, (2) sidewalls + line‐to‐line fit, and (3) sidewalls + 50, 100, or 200 µm interference fit. Kinetic profiles from the stance phase of gait were simulated and micromotions computed from FEA output. Without sidewalls or interference fit, micromotions were largest in early and late stance, with largest micromotions (averaging ~150–250 µm) observed near heel strike. Micromotions decreased 39%–62% when sidewalls were retained. When interference fit was also modeled, micromotions decreased another 37%–61% to ~10 µm. Micromotion differences between patients persisted with sidewall retention but largely disappeared with interference fit. This study presents new insights into the effects of TAR fixation features on implant‐bone micromotion. Stability appeared to be influenced by surrounding bone quality, but this influence was greatly diminished when interference fit was introduced. More complete understanding of TAR implant features and performance is needed, but our results show the importance of bone quality and interference fit in the stability of uncemented TAR.

show abstract

Is limited external rotation after reverse shoulder arthroplasty associated with glenoidal notching?

et al. 2021

View full text Add to dashboard Cite

Background Reverse shoulder arthroplasty (RSA) is a valuable solution for patients with shoulder pain or injury primarily due to a rotator cuff tear or secondary to traumatic events. Nevertheless, several complications are known to appear, with the most frequent being scapular notching (SN) on the inferior and posterior scapular neck. Controversial data exist about the clinical relevance of SN. Since further consequences are still not clearly understood, we aimed to provide more clarity on which factors, especially external rotation (ER), contribute to the appearance and progress of notching. Methods Constant Score (CS), Subjective Shoulder Value (SSV), flexion, abduction, and ER were evaluated retrospectively in 153 shoulders of 147 patients (mean age 79±7.7 years; 62% women) who underwent RSA between 2005 and 2010. Anteroposterior radiographs were evaluated before and 1, 2, 3, and 5 years after RSA for SN according to the Sirveaux classification. The evaluation was performed by two independent surgeons. Spearman’s coefficient and t-test were used. Results CS, SSV, flexion, and abduction increased significantly 1 year after RSA compared to before (all p < 0.0001). No improvement was shown for ER between the same timepoints. Between 2 and 5 years of follow-up, only flexion decreased by 5°(p = 0.02) while CS, SSV, abduction, and ER remained constant. After RSA, notching increases over time. There was no association between SN and CS, SSV, flexion, abduction or ER at any of the measured timepoints. Higher flexion correlated with higher abduction after RSA at every follow-up (1 year r = 0.88, 2 years r = 0.89, 3 years r = 0.86, 5 years r = 0.86). The interrater correlation test showed a strong correlation (r = 0.7). Conclusion We verified the functional benefits of RSA for patients. Additionally, our findings show that despite radiographic progression of notching and unchanged limited ER, the postoperative improvements in CS, SSV, flexion, and abduction are preserved over 5 years.

show abstract

The effect of glenoid component version and humeral polyethylene liner rotation on subluxation and impingement in reverse shoulder arthroplasty

Cited by 29 publications

References 28 publications

The effects of implant design variations on shoulder instability following reverse shoulder arthroplasty

The effects of implant design variations on shoulder instability following reverse shoulder arthroplasty

Influence of sidewall retention and interference fit in total ankle replacement on implant‐bone micromotion: A finite element study

Is limited external rotation after reverse shoulder arthroplasty associated with glenoidal notching?

Contact Info

Product

Resources

About