Humeral Head Shape in Native and Prosthetic Joint Replacement

Background Nonspherical prosthetic humeral head designs have become increasingly popular as they better approximate the native shoulder anatomy and biomechanical properties and is supported by the existing literature. It remains to be seen how this will impact postoperative outcomes for total shoulder arthroplasty providing a justification for this review. Methods A review and synthesis of the literature on the subject of joint replacement in the native and prosthetic humeral head was performed. Results Our review encompasses the anatomical, biomechanical, and finite element data present in the literature for native and prosthetic joint replacement. They describe the native humeral head as more elliptical (nonspherical) than circular (spherical) and that nonspherical prosthetics more closely approximate glenohumeral kinematic properties. Conclusion A nonspherical prosthetic may influence long-term clinical outcomes in hemiarthroplasty and anatomic total shoulder arthroplasty though further research in this area is necessary.

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Total Shoulder Arthroplasty

The Open Orthopaedics Journal ◽

10.2174/1874325001105010106 ◽

2011 ◽

Vol 5 (1) ◽

pp. 106-114 ◽

Cited By ~ 28

Author(s):

Joaquin Sanchez-Sotelo

Keyword(s):

Shoulder Arthroplasty ◽

Soft Tissues ◽

Reverse Shoulder Arthroplasty ◽

Total Shoulder Arthroplasty ◽

Inflammatory Arthropathy ◽

Wide Range ◽

The Subject ◽

Humerus Fractures ◽

And Function

Shoulder arthroplasty has been the subject of marked advances over the last few years. Modern implants provide a wide range of options, including resurfacing of the humeral head, anatomic hemiarthroplasty, total shoulder arthroplasty, reverse shoulder arthroplasty and trauma-specific implants for fractures and nonunions. Most humeral components achieve successful long-term fixation without bone cement. Cemented all-polyethylene glenoid components remain the standard for anatomic total shoulder arthroplasty. The results of shoulder arthroplasty vary depending on the underlying diagnosis, the condition of the soft-tissues, and the type of reconstruction. Total shoulder arthroplasty seems to provide the best outcome for patients with osteoarthritis and inflammatory arthropathy. The outcome of hemiarthroplasty for proximal humerus fractures is somewhat unpredictable, though it seems to have improved with the use of fracture-specific designs, more attention to tuberosity repair, and the selective use of reverse arthroplasty, as well as a shift in indications towards internal fixation. Reverse shoulder arthroplasty has become extremely popular for patients with cuff-tear arthropathy, and its indications have been expanded to the field of revision surgery. Overall, shoulder arthroplasty is a very successful procedure with predictable pain relief and substantial improvements in motion and function.

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TOTAL SHOULDER ARTHROPLASTY, AN OVERVIEW, INDICATINS AND PROSTHETIC OPTIONS

Wiadomości Lekarskie ◽

10.36740/wlek202009112 ◽

2020 ◽

Vol 73 (9) ◽

pp. 1870-1873

Author(s):

Mateusz Wicha ◽

Agnieszka Tomczyk-Warunek ◽

Jaromir Jarecki ◽

Anna Dubiel

Keyword(s):

Shoulder Arthroplasty ◽

Humeral Head ◽

Reverse Shoulder Arthroplasty ◽

Total Shoulder Arthroplasty ◽

Shoulder Function ◽

Long Term Result ◽

Glenohumeral Osteoarthritis ◽

Hip Arthroplasties ◽

Reverse Total Shoulder

Shoulder arthroplasty (SA) has improved significantly over the last twenty years. It offers the effective treatment for patients with severe shoulder dysfunctions. The indications for this procedure have recently expanded tremendously. However, the most common are glenohumeral osteoarthritis, inflammatory shoulder arthropathies, rotator cuff-tear arthropathy, complex fractures of the proximal humerus and osteonecrosis of a humeral head. There is range of the procedures, such as resurfacing of humeral head, anatomic total shoulder arthroplasty, hemiarthroplasty and reverse shoulder arthroplasty. All of them could significantly improve patients quality of life. The outcomes of the shoulder arthroplasty are very satisfying in terms of pain relief and considerable improvements in shoulder function as well as in motion. However, this procedure is not so popular as knee or hip arthroplasties. The reasons for this phenomenon are not clear. The complication rate is considerably low. The most common are periprosthetic fractures, infections, implant loosening and instability. The reasonable solution is a conversion to reverse total shoulder arthroplasty. The survivorship of the prosthesis is up to 12 years, which is acceptable by patients. Long term result are still not clear. Surgeons performing SA opt for deltopectoral approach which provides good exposure of the joint also for revisions. The aim: To summarize knowledge about SA based on current literature.

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The effects of prosthetic humeral head shape on glenohumeral joint kinematics during humeral axial rotation in total shoulder arthroplasty

Journal of Shoulder and Elbow Surgery ◽

10.1016/j.jse.2015.11.058 ◽

2016 ◽

Vol 25 (7) ◽

pp. 1084-1093 ◽

Cited By ~ 9

Author(s):

Bong Jae Jun ◽

Thay Q. Lee ◽

Michelle H. McGarry ◽

Ryan J. Quigley ◽

Sang Jin Shin ◽

...

Keyword(s):

Shoulder Arthroplasty ◽

Humeral Head ◽

Glenohumeral Joint ◽

Total Shoulder Arthroplasty ◽

Axial Rotation ◽

Joint Kinematics ◽

Head Shape

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Functional malcentering of the humeral head and asymmetric long-term stress on the glenoid: Potential reasons for glenoid loosening in total shoulder arthroplasty

Journal of Shoulder and Elbow Surgery ◽

10.1016/j.jse.2008.02.008 ◽

2008 ◽

Vol 17 (5) ◽

pp. 695-702 ◽

Cited By ~ 38

Author(s):

Ruediger von Eisenhart-Rothe ◽

Magdalena Müller-Gerbl ◽

Ernst Wiedemann ◽

Karl-Hans Englmeier ◽

Heiko Graichen

Keyword(s):

Shoulder Arthroplasty ◽

Humeral Head ◽

Total Shoulder Arthroplasty ◽

Glenoid Loosening

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Static posterior humeral head subluxation and total shoulder arthroplasty

Journal of Shoulder and Elbow Surgery ◽

10.1016/j.jse.2009.03.003 ◽

2009 ◽

Vol 18 (4) ◽

pp. 505-510 ◽

Cited By ~ 106

Author(s):

Christian Gerber ◽

John G. Costouros ◽

Atul Sukthankar ◽

Sandro F. Fucentese

Keyword(s):

Shoulder Arthroplasty ◽

Humeral Head ◽

Total Shoulder Arthroplasty

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Journey of the glenoid in anatomic total shoulder replacement

Shoulder & Elbow ◽

10.1177/1758573218790119 ◽

2018 ◽

Vol 11 (2) ◽

pp. 140-148 ◽

Cited By ~ 4

Author(s):

Alessandro Castagna ◽

Raffaele Garofalo

Keyword(s):

Shoulder Arthroplasty ◽

Current Practice ◽

Total Shoulder Arthroplasty ◽

Shoulder Function ◽

Patient Specific ◽

Glenoid Component ◽

Shoulder Replacement ◽

Final Destination ◽

Component Loosening

Anatomic total shoulder arthroplasty (TSR) has been shown to generate good to excellent results for patients with osteoarthritis and a functioning rotator cuff. Many studies have reported that the glenoid component loosening and failure remain the most common long-term complication of total shoulder arthroplasty. The approach to glenoid component is critical because a surgeon should consider patient-specific anatomy, preserving bone stock and joint line restoration, for a good and durable shoulder function. Over the years, different glenoid design and materials have been tried in various configurations. These include cemented polyethylene, uncemented metal-backed and hybrid implants. Although advances in biomechanics, design and tribology have improved our understanding of the glenoid, the journey of the glenoid component in anatomic total shoulder arthroplasty has not yet reached its final destination. This article attempts to describe the evolution of the glenoid component in anatomic TSR and current practice.

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