collection
https://read.qxmd.com/read/20049573/indications-for-reverse-total-shoulder-arthroplasty-in-rotator-cuff-disease
#21
REVIEW
Gregory N Drake, Daniel P O'Connor, T Bradley Edwards
BACKGROUND: Reverse total shoulder arthroplasty (RTSA) was introduced to treat rotator cuff tear arthropathy but is now used to treat a variety of problems. Although its use has expanded substantially since the FDA's approval in 2004, the appropriateness in patients with rotator cuff disease is unclear. QUESTIONS/PURPOSES: We review the use of RTSA in patients with rotator cuff disease to (1) describe classification of rotator cuff tear reparability and the concept of a balanced shoulder; (2) explore the theory behind RTSA design relative to rotator cuff arthropathy; (3) discuss the indications and contraindications for RTSA; and (4) review published outcomes of RTSA for rotator cuff arthropathy...
June 2010: Clinical Orthopaedics and related Research
https://read.qxmd.com/read/18264855/hierarchy-of-stability-factors-in-reverse-shoulder-arthroplasty
#22
JOURNAL ARTICLE
Sergio GutiƩrrez, Tony S Keller, Jonathan C Levy, William E Lee, Zong-Ping Luo
Reverse shoulder arthroplasty is being used more frequently to treat irreparable rotator cuff tears in the presence of glenohumeral arthritis and instability. To date, however, design features and functions of reverse shoulder arthroplasty, which may be associated with subluxation and dislocation of these implants, have been poorly understood. We asked: (1) what is the hierarchy of importance of joint compressive force, prosthetic socket depth, and glenosphere size in relation to stability, and (2) is this hierarchy defined by underlying and theoretically predictable joint contact characteristics? We examined the intrinsic stability in terms of the force required to dislocate the humerosocket from the glenosphere of eight commercially available reverse shoulder arthroplasty devices...
March 2008: Clinical Orthopaedics and related Research
https://read.qxmd.com/read/17322433/use-of-the-reverse-shoulder-prosthesis-for-the-treatment-of-failed-hemiarthroplasty-in-patients-with-glenohumeral-arthritis-and-rotator-cuff-deficiency
#23
REVIEW
J C Levy, N Virani, D Pupello, M Frankle
We report the use of the reverse shoulder prosthesis in the revision of a failed shoulder hemiarthroplasty in 19 shoulders in 18 patients (7 men, 11 women) with severe pain and loss of function. The primary procedure had been undertaken for glenohumeral arthritis associated with severe rotator cuff deficiency. Statistically significant improvements were seen in pain and functional outcome. After a mean follow-up of 44 months (24 to 89), mean forward flexion improved by 26.4 degrees and mean abduction improved by 35 degrees ...
February 2007: Journal of Bone and Joint Surgery. British Volume
https://read.qxmd.com/read/17235009/radiologic-assessment-of-reverse-shoulder-arthroplasty
#24
REVIEW
Catherine C Roberts, Anders L Ekelund, Kevin J Renfree, Patrick T Liu, Felix S Chew
The reverse shoulder prosthesis was approved for clinical use in the United States in March 2004. This new prosthesis reverses the normal ball-and-socket relationship of the shoulder joint. As a result of replacement of the glenoid component with a ball and of the humeral head with a socket, the center of rotation is moved distally and medially, allowing more control of shoulder motion by the deltoid muscle. This improved geometric configuration allows shoulder reconstruction in patients who have irreparable rotator cuff damage with secondary arthropathy, pain, and "pseudoparalysis" (ie, inability to lift the arm above the horizontal)...
January 2007: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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