Background . Reverse arthroplasty is an effective method of treating severe injuries and diseases the shoulder joint. In cases osteoporosis, defects deformities glenoid, there are risks incorrect installation instability components endoprosthesis. literature data, problem osteoporosis in endoprosthetics joint methods its solution rather poorly reflected, which was reason for this study. The aim...

HYPOTHESIS The success of shoulder arthroplasty surgery has been limited by a common complication: glenoid implant loosening. Eccentric loading of the glenoid due to migration of the humeral head is considered to be the major cause of glenoid loosening and is referred to as the rocking-horse phenomenon. Glenoid implant loosening may cause pain, limitation of function, and the need for complicat...

Glenoid wear is common in the setting of shoulder arthritis. Severe glenoid erosion presents a serious challenge to the surgeon performing a shoulder arthroplasty. This paper presents the various classification schemes for glenoid erosion. The results of the six main treatment options for shoulder arthroplasty with an eroded glenoid are reviewed. The six treatment options include: 1. eccentric ...

PURPOSE To evaluate treatment outcome with Zygoma fixtures (Nobel Biocare, Göteborg, Sweden) with regard to fixture survival, patient satisfaction, and function of prosthesis replacement. MATERIALS AND METHODS The treatment outcome of 76 patients treated with 145 Zygoma fixtures at 16 centers was evaluated. Patient's and dentist's evaluations of the functional and aesthetic outcome of the tre...

BACKGROUND There is a strong correlation between glenoid defect size and recurrent anterior shoulder instability. A better understanding of glenoid defects could lead to improved treatments and outcomes. PURPOSE To (1) determine the rate of reporting numeric measurements for glenoid defect size, (2) determine the consistency of glenoid defect size and location reported within the literature, ...

The temporomandibular joint (TMJ) is the most active, functioning joint of the body. Limitations of the mouth opening and deformity of the lower jaw can be caused by bony or fibrous ankylosis of the TMJ due to various reasons and mostly is due to fusion of the condyle to the base of the skull. Trauma to the TMJ is the most common etiology of ankylosis of TMJ. Clinical examination, radiographic ...

In the rehabilitation of a patient with loss vertical dimension, repositioning condyle may be crucial to avoid loading on retrodiscal area temporomandibular joint (TMJ). However, establishing new position within glenoid cavity is not simple procedure, and several indications exist in literature. Digital techniques 3D visualization using cone beam computed tomography (CBCT) can help. this clinic...

Eccentric posterior glenoid erosion is a common condition in osteoarthritis. No limits have ever been placed on the degree of eccentric erosion that can be corrected while still maintaining sufficient bone stock to implant a glenoid securely. Five cadaveric scapulae were dissected. Posterior glenoid erosion was created to simulate retroversion of 15 degrees or more. A computed tomography (CT) s...

PURPOSE To investigate glenoid fixation for superior capsule reconstruction (SCR) and evaluate anchor positions, intraosseous trajectories, and proximity to the suprascapular nerve (SSN) and glenoid fossa. The secondary purpose was to provide technical pearls and pitfalls for anchor insertion on the superior glenoid during SCR. METHODS Three beath pins were arthroscopically inserted into 12 (...

2 Department of Orthopaedic Surgery, Harvard Medical School, Boston, MA Revision of the glenoid component in total shoulder arthroplasty (TSA) remains an unresolved problem. Even with meticulous surgical technique, available bone stock may preclude the implantation of a new glenoid component. Multiple studies have demonstrated that patients in whom a new glenoid can be placed have improved pain...