The use of shoulder joint replacement has increased significantly since the early 2000s. The method, initially used as the gold standard for the treatment of osteoarthritis, has long gone beyond the generally accepted indications, expanding its use for the treatment of shoulder joint injuries and their consequences. The new generation of implants has led to improved outcomes such as functionality, range of motion in the shoulder joint and patient satisfaction. The decision to perform anatomical endoprosthetics (hemiarthroplasty, total shoulder joint replacement) depends on the degree of osteopenia, the viability of the humerus head, the integrity of the tubercles or the functional state of the rotator cuff of the shoulder. This type of arthroplasty remains for patients with a functional rotator cuff. Reversible endoprosthetics is today the preferred treatment option for non-fusion or improper fusion of the proximal humerus with a collapse of the humerus head or a non-functioning rotator cuff. Despite the limitations and complications reported in the literature, revision arthroplasty has a good potential for functional improvement in patients with the consequences of injuries of the proximal humerus. This is a group of patients, which is a difficult task for a surgeon. As further research is carried out, implant designs and their clinical application will continue to evolve.
Posterior fracture-dislocations often remain undiagnosed at initial medical attendance. In dislocation, the head of the humerus extends beyond the glenoid to form a zone of impaction, which “fixes” it. The injury is almost unidentifiable in standard frontal X-ray images. Meanwhile, continued fixation of the humerus in the state of posterior dislocation leads to a rapid progression of the traumatic impaction over up to 50% of the articular surface area. The associated damage to the articular lip of the scapula, rupture of the rotator cuff muscles, symptoms of shoulder instability after relocation, and severe pain syndrome require advanced treatments for this type of injury. Here we report a clinical case of anatomical neck fracture of the humerus with displaced consolidation, combined to posterior dislocation. To avoid subacromial impingement, instead of correcting the position of the head, we abandoned the reposition and performed an osteotomy with distal displacement of the greater tubercle of the humerus.
Background. Fracture-dislocation of the proximal humerus is a severe injury that equally affects both young and old people. Such injuries are often accompanied by the high risk of neurocirculatory and other complications, which defines their great medical and social importance. The purposes of this study were: 1) to compare the mid-term results of the surgical treatment of the patients with dislocation-fractures of the proximal humerus when they were managed according to the standard algorithm or the new one developed by the authors of this study; 2) to evaluate the effectiveness of the proposed protocol in relation to the patients with neurological complications in order to elaborate a universal approach to the optimal treatment tactics. Patients and Methods. The treatment results of 73 patients with proximal humerus fracture-dislocation undergone the surgery from 2012 to 2018. The patients were divided into 2 groups, which were managed according to the traditional (control group) or the new algorithms (main group), differing in the time of the surgery, a set of diagnostic methods, and an approach to the prevention and treatment of complications. The patients’ examination included taking patients’ anamnesis, their physical examination, X-rays and multispiral computed tomography of the injured shoulder, electromyoneurography, ultrasound of the upper limb blood vessels, patients’ questioning. Results. A year after the surgery, a statistically significant difference in the functional results was revealed in the patients of the main and control groups by the Constant Shoulder Score (p = 0.0063). In the control group, there was a statistically significant difference of the functional results by Constant Shoulder Score between the patients with and without neurological complications (p = 0.003). There was no statistically significant difference among such patients in the main group (p = 0.387). Conclusion. The main group patients, including those with neurological complications, achieved higher functional results in comparison with the control group. Thus, the authors’ treatment algorithm showed its effectiveness. The surgery within 6 hours from the moment of admission of the patients with humerus fracture-dislocation, as well as the earliest possible diagnosis of neurological injury and treatment of complications significantly improved the prognosis and outcome the main group patients.
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