Humeral head size in shoulder arthroplasty: A kinematic study

Væsel, Michael Toft; Olsen, Birgit Anette; Søjbjerg, Jens Ole; Helmig, Peter; Sneppen, O

doi:10.1016/s1058-2746(97)90088-4

Cited by 19 publications

(12 citation statements)

References 14 publications

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“…[12,13], Blevins et al [2] and Vaesel et al [41] studied the size of the humeral head component, and reported that the larger size than the anatomical size overstretched the soft tissue of capsule and abductor muscles and affected markedly on range of motion after prosthetic reconstruction. On the other hand, Rietveld et al [36] and Hsu et al [I51 suggested that the distance between the center of rotation of the humerdl head and the lateral aspect of the greater tuberosity had a marked influence on the length of lever arm of the abductors muscles, emphasized that the reconstruction of the distance was important to maintain the mechanics and strength of the shoulder through their effect on the deltoid and the moment arm of the rotator cuff.…”

Section: Discussionmentioning

confidence: 99%

The radiographic study in the relationship of the glenohumeral joint

Takase¹,

Yamamoto²,

Imakiire³

et al. 2004

Journal Orthopaedic Research

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Accurate reproduction of anatomic relationship is important in non‐constrained prosthetic arthroplasty. The accurate lateral glenohumeral offset, which indicates a parameter of the lever arm of the deltoid and supraspinatus muscles, is one of the most important elements in achieving the efficient shoulder functions after prosthetic reconstruction. However, to our knowledge, there has been no detailed study on the influence of minute changes in the neck shaft angle, within the normal range, on lateral glenohumeral offset. In this study, we evaluated the relationship between the neck shaft angle and various geometric measurement values in the glenohumeral joint. Radiographs of 471 shoulders without osseous lesions in the glenohumeral joint and greater tuberosity were reviewed. There were 265 males and 206 females, and a mean age was 53.5 years old. The final diagnosis was impingement syndrome in 269 patients, rotator cuff tear in 147, and control group in 55 patients. Eight parameters were measured on true anteroposterior radiographs. The lateral glenohumeral offset correlated with the radius of the curvature of the humeral head and the humeral head diameter. The neck shaft angle was not correlated with the offset value. However, when the offset value was divided by the humeral head diameter, to eliminate the affection of the size of the humeral head toward the offset, a correlation was observed with the neck shaft angle. Based on these correlations, we could obtain the equation of the lateral glenohumeral offset according to the neck shaft angle. Using the equation, when the neck shaft angle is decided, the lateral glenohumeral offset can be estimated based on the correlation between the parameters, which achieve the efficient shoulder functions after prosthetic components. Therefore, inaccurate determination of the neck shaft angle in the humeral head component design and selection may induce dysfunction of the abductor muscles. © 2003 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

The radiographic study in the relationship of the glenohumeral joint

Takase¹,

Yamamoto²,

Imakiire³

et al. 2004

Journal Orthopaedic Research

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“…For those patients with intact/functional rotator cuffs, unconstrained prostheses remain the gold standard (Iannotti et al, 1992;Stewart and Kelly, 1997) achieving relief of pain, good function and range of motion. However for rotator cuff deficiency, unconstrained devices are unable to provide stability across the joint because of superioranterior translation of the humeral head (Karduna et al, 1997) and complications such as loosening and poor range of motion do occur (Vassel et al, 1997). For rotator cuff deficient cases, constrained, fixed fulcrum and semi fulcrum, devices have been used since the 1970s (Wirth and Rockwood, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…However, complications do occur such as a high incidence of radiolucent lines (Levine et al, 1997), increased loosening of the glenoid with time (Norris and Lachiewicz, 1996), rotator cuff failure and diminished range of motion, resulting in the need for revision operations (Vassel et al, 1997). These patients pose a challenging dilemma especially when it may be difficult to reconstruct the glenoid as a result of bone loss due to a previously cemented component.…”

Section: Introductionmentioning

confidence: 99%

Analysis of glenoid fixation for a reversed anatomy fixed-fulcrum shoulder replacement

Ahir

Walker

Squire-Taylor³

et al. 2004

Journal of Biomechanics

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“…Unconstrained total shoulder arthroplasty has been successful when the rotator cuff is intact and functional 6,7,10,18,21,27,40,42 but has unsatisfactory patient outcomes in the presence of rotator cuff deficiency. 17,32,33,43 The reverse shoulder design has had clinical success in the management of glenohumeral arthritis in the presence of rotator cuff deficiency. 8,16,39,48 However, glenoid side complications remain a concern and have been reported using both of the currently available reverse shoulder designs: the Grammont design (manufactured by both DePuy, International Ltd, Leeds, UK and Tornier, Eden Prairie, MN) and the Reverse Shoulder Prosthesis (RSP; Encore Medical Corp, Austin, TX).…”

mentioning

confidence: 99%