Glenohumeral translation during active and passive elevation of the shoulder — a 3D open-MRI study

Graichen, Heiko; Stammberger, Tobias; Bonél, Harald; Englmeier, Karl‐Hans; Reiser, Maximilian; Eckstein, F.

doi:10.1016/s0021-9290(99)00209-2

Cited by 182 publications

(163 citation statements)

References 23 publications

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“…The reported values of humerus translation, muscle moment arms, and joint forces are consistent with the literature (Graichen et al, 2000;Hughes et al, 1998;Kelkar et al, 2001;Liu et al, 1997;Massimini et al, 2008;Poppen and Walker, 1978;Westerhoff et al, 2009). Using a 2D (axisymmetric) model of the glenoid component, Swieszkowski et al also reported that increasing glenoid thickness reduces the maximal contact pressure (Swieszkowski et al, 2003).…”

Section: Discusionsupporting

confidence: 85%

Importance of polyethylene thickness in total shoulder arthroplasty: A finite element analysis

Terrier

Brighenti

Pioletti

et al. 2012

Clinical Biomechanics

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Background: Articular surfaces reconstruction is essential in total shoulder arthroplasty. Because of the limited glenoid bone support, thin glenoid component could improve anatomical reconstruction, but adverse mechanical effects might appear. Methods: With a numerical musculoskeletal shoulder model, we analysed and compared three values of thickness of a typical all-polyethylene glenoid component: 2, 4 (reference) and 6 mm. A loaded movement of abduction in the scapular plane was simulated. We evaluated the humeral head translation, the muscle moment arms, the joint force, the articular contact pattern, and the polyethylene and cement stress. Findings Decreasing polyethylene thickness from 6 to 2 mm slightly increased humeral head translation and muscle moment arms. This induced a small decreased of the joint reaction force, but important increase of stress within the polyethylene and the cement mantel. Interpretation The reference thickness of 4 mm seems a good compromise to avoid stress concentration and joint stuffing.

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Section: Discusionsupporting

confidence: 85%

Importance of polyethylene thickness in total shoulder arthroplasty: A finite element analysis

Terrier

Brighenti

Pioletti

et al. 2012

Clinical Biomechanics

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“…A radiographic study on healthy volunteers reported an upward motion of about 3 mm from 0 to 30 degrees and a stabilization thereafter (only 1 mm upward or downward every 30 degrees) [9]. In another in vivo study, open MRI was used to measure the humerus translation on healthy subjects [10]. In average, the centre of the humerus was 1 mm above the centre of the glenoid at 60 degrees and was centred between 90 and 120 degrees.…”

Section: Discussionmentioning

confidence: 99%

“…[6]. It is also justified by the limited translation ranges observed in cadaver [7] or in vivo studies [8][9][10], although larger translation ranges were also observed [11]. Most studies report an initial superior translation of 2-3 mm from 0 to 30 degrees of abduction, followed by a more stable phase up to full abduction.…”

Section: Introductionmentioning

confidence: 99%

“…With a similar method, Deutsh et al [8] observed no significant translation of the humerus from 0 to 120 degrees of abduction. Using open MRI on healthy volunteers, Graichen et al [10] observed an average downward translation of 1 mm after the initial upward translation, and a centering of the joint between 90 and 120 degrees of abduction. In a cadaver study [7], the upward and downward translation of the humerus during shoulder abduction was clearly observed, in a range of about 2 mm.…”

Section: Introductionmentioning

confidence: 99%

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

Terrier

Vogel

Capezzali

et al. 2008

Medical Engineering & Physics

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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.

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“…The relevance of a correct joint position was argued in a kinematic study in healthy shoulders. 12 This technique aims to realign the joints positional faults by performing a manually specific oriented glide to a painful joint, and assessing and adjusting force intensity. Meanwhile, the patient performs an active joint movement so that patient's symptoms are immediately relieved and the maneuvers improve pain and movement.…”

Section: Introductionmentioning

confidence: 99%

Mobilization With Movement for Shoulder Dysfunction in Older Adults: A Pilot Trial

Lirio-Romero¹,

Torres-Lacomba

Montoro³

et al. 2015

Journal of Chiropractic Medicine

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Objective: The purpose of this study was to evaluate the feasibility of the methods proposed to conduct a full randomized clinical trial to assess the effectiveness of mobilization with movement on shoulder functionality in older adults with shoulder dysfunction. Methods: A pilot, randomized, single-blinded clinical trial was carried out with 44 older adults (83.9±8.2 years) with shoulder dysfunction in 3 nursing homes in Toledo, Spain. Participants were recruited through information sessions and were randomly allocated into 2 groups. The control group (n = 22) intervention consisted of a physical therapy standard protocol proposed by the Spanish Rheumatology Society. Techniques based on Mulligan's concepts of mobilization with movement were added to the standard protocol for the experimental group (n = 22) intervention. Interventions took place 3 times a week for 2 consecutive weeks and were performed by 2 experienced therapists. Main outcomes were recruitment rates, participation and adherence to interventions, assessment procedures, and the implementation of mobilization with movement. Clinical outcomes were shoulder functionality, active glenohumeral range of motion, and pain intensity. Data were collected at baseline, after each group intervention, and at 1 and 3 months after finishing interventions. Results: All the participants accepted to be randomized. Participation rates were 97.7% for the experimental group and 95.5% for the control group. The analysis of variance did not show any statistically significant difference between treatment groups for any of the variables (all P values for the group effect were greater than .36) or a change of the difference between groups over time (all P values for the time-treatment interactions were greater than .3).Conclusion: The research methods tested in this pilot study offer a suitable foundation to conduct a full clinical trial.

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Glenohumeral translation during active and passive elevation of the shoulder — a 3D open-MRI study

Cited by 182 publications

References 23 publications

Importance of polyethylene thickness in total shoulder arthroplasty: A finite element analysis

Importance of polyethylene thickness in total shoulder arthroplasty: A finite element analysis

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

Mobilization With Movement for Shoulder Dysfunction in Older Adults: A Pilot Trial

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