The treatment of rotator cuff arthropathy is still a matter of debate. Up to now a hemiarthroplasty was usually used. We report the results obtained with a reversed shoulder prosthesis (Delta prosthesis, De Puy) in seven patients with severe rotator cuff arthropathy. The mean Constant score increased from 17.9/100 preoperatively to 56.7/100 postoperatively. The mean follow-up was 16 months. Loo...

Reverse total shoulder arthroplasty (RTSA) is increasingly used for the treatment of complex proximal humerus fractures and fracture sequelae. In 2021, half a dozen models stems are commercially available, reflecting its growing utility management. Prosthesis designs, bone grafting tuberosity fixation techniques have evolved to allow better more reliable tuberosities bony ingrowth. Patients wit...

Abstract We investigated removal of electrocardiogram (ECG) artifacts from the myoelectric prosthesis control signals, taken from the reinnervated pectoralis muscles of a patient with bilateral amputations at shoulder disarticulation level. The performance of various ECG artifact removal methods including high pass filtering, spike clipping, template subtracting, wavelet thresholding and adapti...

©2015 by The Orthopaedic Journal at Harvard Medical School BACKGROUND Shoulder arthroplasty procedures have generally excellent clinical outcomes, but infection following shoulder arthroplasty continues to be a difficult problem both diagnostically and therapeutically. Two-stage reimplantation with use of a temporary Prosthesis of Antibiotic-Loaded Acrylic Cement (PROSTALAC) (DePuy, Warsaw, Ind...

We report a rare case of a 39-year-old man with bilateral posterior dislocated shoulder joints with comminuted fractures of the humeral heads after an epileptic seizure. Posterior shoulder dislocations prove to be a diagnostic challenge and in this case were missed at initial presentation. After a failed attempt of osteosynthesis and removal of material, he received a hemi-prosthesis in separat...

The authors have retrospectively studied a series of 32 reverse shoulder prostheses implanted in 30 patients by the same surgeon between 1992 and 2000. The mean age was 71 years; 26 patients were female, 4 were male. Thirteen patients (14 prostheses) were clinically and radiologically examined at follow-up; 9 patients (10 prostheses) were questioned by telephone and their radiological records w...

Pigmented villonodular synovitis is a reactive condition characterised by exuberant proliferation of synovial villi and nodules. It may be localised or diffuse and can cause severe articular damage. This report is of 2 patients with pigmented villonodular synovitis of the shoulder causing extensive arthritic changes. Both patients underwent shoulder hemiarthroplasty and total synovectomy and ac...

Reversed shoulder prostheses are increasingly being used for the treatment of glenohumeral arthropathy associated with a deficient rotator cuff. These non-anatomical implants attempt to balance the joint forces by means of a semi-constrained articular surface and a medialised centre of rotation. A finite element model was used to compare a reversed prosthesis with an anatomical implant. Active ...

Targeted muscle reinnervation (TMR) is a surgical procedure used to improve the control of upper limb prostheses. Residual nerves from the amputated limb are transferred to reinnervate new muscle targets that have otherwise lost their function. These reinnervated muscles then serve as biological amplifiers of the amputated nerve motor signals, allowing for more intuitive control of advanced pro...

Reverse total shoulder arthroplasty (TSA) is a useful intervention for older patients with glenohumeral arthritis and a deficient rotator cuff. However, as a semiconstrained prosthesis, conventional reverse TSA implanted in a young patient could fail over time secondary to polyethylene wear and subsequent osteolysis. A metal-on-metal prosthesis may avoid this type of failure. The purpose of thi...