Osseous Anatomy of the Scapula

Schroeder, Herbert P. von; Kuiper, Scott D.; Botte, Michael J.

doi:10.1097/00003086-200102000-00015

Cited by 163 publications

(150 citation statements)

References 18 publications

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“…The use of a preoperative CT scan to fully evaluate glenoid surface morphology allows the surgeon to understand the anatomy of the surface with respect to the underlying vault and scapular axis [7,9]. Scapular axis must be determined by evaluation of the preoperative radiographs, the preoperative CT, or by palpation of the middle of the anterior base of the glenoid vault at the juncture of the upper and lower scapular crura [2,10,11]. The width of the glenoid vault in the anterior to posterior dimension narrows from the glenoid surface to the juncture of the upper and lower crura medially.…”

Section: Discussionmentioning

confidence: 99%

Projection of the Glenoid Center Point Within the Glenoid Vault

Rispoli

Sperling

Athwal

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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Correct identification of the center point of the glenoid surface guides glenoid component placement. It is unknown whether the center point on the glenoid surface corresponds to the center of the glenoid vault at the medial extent of the glenoid prosthesis. We reviewed 20 consecutive computed tomography scans obtained preoperatively in patients with primary osteoarthritis. A glenoid center point was chosen on the glenoid surface and then projected back into the glenoid vault along the scapular axis and perpendicular to glenoid inclination. The difference from the projection of the glenoid surface center point to the center point at a 1.5-cm depth into the glenoid vault was then measured. The mean deviation of the glenoid center point at a depth of 1.5 cm from the center point at the glenoid articular surface was 1.7 mm anterior and 3.9 mm inferior. The most common deviation of the center point of the glenoid vault at the projected medial limit of the glenoid prosthesis was slightly anterior and inferior to the center point on the glenoid surface. Identifying the center of the glenoid surface coupled with alignment of the glenoid prosthesis in neutral version and anatomic inclination provides a reliable means to guide placement of glenoid components.

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Section: Discussionmentioning

confidence: 99%

Projection of the Glenoid Center Point Within the Glenoid Vault

Rispoli

Sperling

Athwal

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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“…In the present study the average superiorinferior diameter of the right glenoid was 38.49±3.17mm and the average superior-inferior diameter of the left glenoid was38.06±3.34 mm. Von Schroeder et al [9], Coskun et al [16] and Karelse et al [12] [11] measured the SI diameter of the male and female glenoid separately. The average SI diameter of male glenoid measured by these authors was 37.5±2.2, 36.08±2.05 mm and 38.71±2.71mm respectively.…”

Section: Methodsmentioning

confidence: 99%

Morphometry and Morphology of Glenoid Cavity of Scapula

Vaishnani¹,

Jethva²,

Rathwa³

et al. 2018

IJAR

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Introduction:The Glenoid cavity is regarded as the head of the scapula. The morphology of glenoid cavity is highly variable. It articulates with the head of the humerus at the glenohumeral joint. Shape and dimensions of the glenoid cavity are important in the design and fitting of glenoid components for total shoulder arthroplasty. An understanding of variations in normal anatomy of the glenoid is essential while evaluating pathological conditions like osseous bankart lesions and osteochondral defects. The aim of the present study was to obtain the anthropometric data of the glenoid cavity of the scapula and to study the various shapes of the glenoid cavity which will help in management of shoulder pathology.

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“…In the superior portion of the glenoid, where the bone is more dense and cortical, small (2.5-mm) drill holes were made using a threaded pin to obtain a complete bleeding bone surface (Fig. 4A) [1,38]. The central hole was then drilled to 8 mm.…”

Section: Patients and Materialsmentioning

confidence: 99%

Bony Increased-offset Reversed Shoulder Arthroplasty: Minimizing Scapular Impingement While Maximizing Glenoid Fixation

Boileau

Moineau

Roussanne

et al. 2011

Clinical Orthopaedics &Amp; Related Research

416

326

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Background Scapular notching, prosthetic instability, limited shoulder rotation and loss of shoulder contour are associated with conventional medialized design reverse shoulder arthroplasty. Prosthetic (ie, metallic) lateralization increases torque at the baseplate-glenoid interface potentially leading to failure. Questions/purposes We asked whether bony lateralization of reverse shoulder arthroplasty would avoid the problems caused by humeral medialization without increasing torque or shear force applied to the glenoid component. Patients and Methods We prospectively followed 42 patients with rotator cuff deficiency treated with bony increased-offset reverse shoulder arthroplasty. A cylinder of autologous cancellous bone graft, harvested from the humeral head, was placed between the reamed glenoid surface and baseplate. Graft and baseplate fixation was achieved using a lengthened central peg (25 mm) and four screws. Patients underwent clinical, radiographic, and CT assessment at a minimum of 2 years after surgery. ResultsThe humeral graft incorporated completely in 98% of cases (41 of 42) and partially in one. At a mean of 28 months postoperatively, no graft resorption, glenoid loosening, or postoperative instability was observed. Inferior scapular notching occurred in 19% (eight of 42). The absolute Constant-Murley score improved from 31 to 67. Thirty-six patients (86%) were able to internally rotate sufficiently to reach their back over the sacrum. Conclusions Grafting of the glenoid surface during reverse shoulder arthroplasty effectively creates a long-necked scapula, providing the benefits of lateralization. Bony increased-offset reverse shoulder arthroplasty is associated with low rates of inferior scapular notching, improved shoulder rotation, no prosthetic instability and improved shoulder contour. In contrast to metallic lateralization, bony lateralization has the advantage of maintaining the prosthetic center of rotation at the prosthesis-bone interface, thus minimizing torque on the glenoid component.

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Osseous Anatomy of the Scapula

Cited by 163 publications

References 18 publications

Projection of the Glenoid Center Point Within the Glenoid Vault

Projection of the Glenoid Center Point Within the Glenoid Vault

Morphometry and Morphology of Glenoid Cavity of Scapula

Bony Increased-offset Reversed Shoulder Arthroplasty: Minimizing Scapular Impingement While Maximizing Glenoid Fixation

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