BACKGROUND Atrophy of rotator cuff muscles has been considered an irreversible phenomenon. The purpose of this study is to evaluate whether atrophy is truly irreversible after rotator cuff repair. METHODS We measured supraspinatus muscle atrophy of 191 patients with full-thickness rotator cuff tears on preoperative magnetic resonance imaging and postoperative multidetector computed tomography...

Traditional methods of open and mini-open rotator cuff repairs have shown excellent results in shortand medium-term follow-up and remain viable methods of treating rotator cuff pathology. A trend toward the arthroscopic repair of rotator cuff tears continues, however, and will probably accelerate as the next generation of surgeons is trained in arthroscopic treatment methods. The purpose of thi...

The high retear rates after surgery for irreparable rotator cuff tears can be explained by the healing capacity potential of tendons and the native rotator cuff enthesis characterised by complex morphological structures, called direct insertion. Many experimental researches have focused on biologically augmenting the rotator cuff reconstruction and improving tendon-bone healing of the rotator c...

BACKGROUND Rotator cuff repair is a commonly performed procedure, but many of these repairs fail in the postoperative term. Despite advances in surgical methods to optimize the repair, failure rates still persist clinically, thereby suggesting the need for novel mechanical or biological augmentation strategies. Nonresorbable implants provide an appealing approach because patch materials may con...

 Abstract  Background: Rotator cuff tear is one of the most common causes of shoulder  complaints in the elderly. Based on the severity and patient's condition, a variety of  methods applies to manage the tear and surgery is an important method, which could  be done by open or arthroscopic technique. The current study aimed to investigate  and report short-term results of arthroscopic repair of...

Introduction: Acute and chronic rotator cuff tears represent a substantial clinical burden in our society and remain an unsolved problem in orthopaedics. Despite the evolution of minimally-invasive surgical techniques for rotator cuff repair, including mini-open and arthroscopic approaches, failure of surgically repaired rotator cuff tears to heal continues to represent a significant problem. E...

The financial cost of using human tissues in biomedical testing and surgical reconstruction is predicted to increase at a rate that is disproportionately greater than other materials used in biomechanical testing. Our first hypothesis is that cadaveric proximal humeri that had undergone monotonic failure testing of simulated rotator cuff repairs would not differ in ultimate fracture loads or in...

INTRODUCTION: Rotator cuff tears (RCT) are the most common tendon injury seen in orthopedic patients. Although small tears are amenable to arthroscopic repair, massive RCT repairs can result in re-tears and poor clinical outcomes. Muscle atrophy and fatty infiltration in rotator cuff muscles are major complications of chronic massive RCT and are thought to be among the factors responsible for t...

Massive, irreparable rotator cuff tears are challenging to treat and associated with pain and severe limitation in shoulder elevation due to the proximal migration of the humeral head and, consequently, subacromial impingement. Furthermore, retraction of the tendons in combination with fat infiltration and muscular weakness results in unpredictable treatment outcomes. While conservative treatme...

Recent studies have reported that massive rotator cuff tears do not heal as predictably as, and may have diminished clinical outcomes compared with, smaller rotator cuff tears. An improved understanding of the biologic degeneration and the biomechanical alterations of massive rotator cuff tears should provide better strategies to optimize outcomes. The approach to patients with massive rotator ...