Glenohumeral Joint Translations before and after Total Shoulder Arthroplasty. A Study in Cadavera*

Karduna, Andrew R.; Williams, Gerald R.; Williams, John L.; Iannotti, Joseph P.

doi:10.2106/00004623-199708000-00008

Cited by 112 publications

(79 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although the glenohumeral joint is often assumed as a ball-socket joint, natural translations of the humeral head are observed in vitro and in vivo. It is clear that these translations are a key factor in the study of the glenohumeral joint stability, particularly to analyse the biomechanics and survival of artificial replacement of this joint [2].…”

Section: Introductionmentioning

confidence: 99%

An algorithm to allow humerus translation in the indeterminate problem of shoulder abduction

Terrier

Vogel

Capezzali

et al. 2008

Medical Engineering & Physics

View full text Add to dashboard Cite

The shoulder is one of the most complex joints of the human body, mainly because of its large range of motion, but also because of its active muscular stabilisation. Actually, the numerous stabilizing muscles and degrees of freedom yield indeterminate biomechanical models. To solve this indeterminate, most models use reverse dynamics with a simplified ball-socket joint, preventing therefore the natural humerus translation. In this paper, an algorithm was specifically developed to solve the indeterminate problem by a feedback control of muscle activation, allowing the natural humerus translation. Abduction was considered in the scapular plane, accounting for the three deltoid parts and the rotator cuff muscles. The major aim of this study was to validate the numerical algorithm, which was here restricted to two-dimensions in order to compare the numerical solution to a known algebraic one. This comparison gave a relative error below 0.1%. The joint reaction force was comparable to other models and the humerus translation was in agreement with in vivo or in vitro studies.

show abstract

Section: Introductionmentioning

confidence: 99%

An algorithm to allow humerus translation in the indeterminate problem of shoulder abduction

Terrier

Vogel

Capezzali

et al. 2008

Medical Engineering & Physics

View full text Add to dashboard Cite

show abstract

“…5,12,13,14,17 In the nonpathological shoulder, the humeral head has been shown to translate across the glenoid surface during active motion. [18][19][20][21] Many total shoulder designs have therefore incorporated a level of nonconformity in an effort to return normal prepathological function to the joint. However, overly nonconforming joints in patients with dysfunctional rotator cuffs have done relatively poor due to complaints of instability.…”

Section: Introductionmentioning

confidence: 99%

Glenohumeral kinematics following total shoulder arthroplasty: A finite element investigation

Hopkins

Hansen

Amis

et al. 2006

Journal Orthopaedic Research

View full text Add to dashboard Cite

ABSTRACT:The osseous geometry of the glenohumeral joint is naturally nonconforming and minimally constrained, and the joint's stability is maintained by action of the rotator cuff muscles. Damage to these muscles is often associated with joint degeneration, and a variety of glenoid prostheses have been developed to impart varying degrees of stability postoperatively. The issues of conformity and constraint within the artificial shoulder have been addressed through in vivo and in vitro studies, although few computational models have been presented. The current investigation presents the results of three-dimensional finite element analyses of the total shoulder joint and the effects of design parameters upon glenohumeral interaction. Conformity was shown not to influence the loads required to destabilize the joint, although it was the principal factor determining the magnitude of humeral head translation. Constraint was found to correlate linearly with the forces required to dislocate the humeral head, with higher constraint leading to slightly greater humeral migration at the point of joint instability. The model predicts that patients with a dysfunctional supraspinatus would experience frequent eccentric loading of the glenoid, especially in the superior direction, which would likely lead to increased fixation stresses, and hence, a greater chance of loosening. For candidates with an intact rotator cuff, the models developed in this study predict that angular constraints of at least 148 and 6.58 in the superoinferior and anteroposterior axes are required to provide stable unloaded abduction of the humerus, with larger constraints of 188 and 108 necessitated by a dysfunctional supraspinatus. The tools developed during this study can be used to determine the capacity for different implant designs to provide resistance to excessive glenohumeral translations and reduce the potential for instability of the joint, allowing surgeons to optimize postoperative functional gains on a patient by patient basis. ß

show abstract

“…39 On theother hand, conforming implants reduce the natural level of obligate translations between the articular surfaces. 9,12,[16][17][18]28 These translations are constrained by eccentric forces, which may create excessive rim stress 15,31 and may lead to implant loosening. 5 Therefore, because glenohumeral conformity is related to opposite mechanisms, an ideal value may be hypothesized.…”

mentioning

confidence: 99%

“…From cadaveric studies, it was found that a radial mismatch of 4 mm best reproduced the glenohumeral translation. 13,16 Collins et al 5 recommended 3 to 5 mm of mismatch, whereas Walch et al, 39 in a retrospective multicenter clinical study, recommended 6 to 10 mm. Friedman 7 emphasized the risk of polyethylene fracture with radial mismatch exceeding 10 mm.…”

mentioning

confidence: 99%

“…Friedman 7 emphasized the risk of polyethylene fracture with radial mismatch exceeding 10 mm. However, despite several clinical, 11,39 experimental, 10,13,31 and numerical studies, 21,33 the mechanical effects of glenohumeral conformity are not yet completely understood, 6,16 and recommendations for an ideal mismatch are still uncertain. 39 Therefore, the aim of this study was to evaluate the influence of glenohumeral conformity on glenoid stress by use of a finite element model of a prosthetic shoulder.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Translation of biomechanical concepts in bone tissue engineering: from animal study to revision knee arthroplasty

Roshan-Ghias

Terrier

Jolles

et al. 2012

Computer Methods in Biomechanics and Biomedical Engineering

View full text Add to dashboard Cite

show abstract

Glenohumeral Joint Translations before and after Total Shoulder Arthroplasty. A Study in Cadavera*

Cited by 112 publications

References 15 publications

An algorithm to allow humerus translation in the indeterminate problem of shoulder abduction

An algorithm to allow humerus translation in the indeterminate problem of shoulder abduction

Glenohumeral kinematics following total shoulder arthroplasty: A finite element investigation

Translation of biomechanical concepts in bone tissue engineering: from animal study to revision knee arthroplasty

Contact Info

Product

Resources

About