f p q r a j t he purpose of this study was to assess arthroscopic epair of rotator cuff tears at a minimum of 2 years ostoperatively with both patient-derived and objective utcome measures, including the use of magnetic resoance imaging (MRI), to evaluate repair status. Evaluted were 49 shoulders in 47 consecutive patients. he American Shoulder and Elbow Surgeons score, onstant and Murley score...

PURPOSE To evaluate early functional outcomes of hemiarthroplasty for 3- or 4-part proximal humeral fractures. METHODS 16 men and 11 women aged 27 to 83 (mean, 56) years underwent hemiarthroplasty for comminuted 3-part (n=13) or 4-part (n=14) proximal humeral fractures. All the patients reported normal shoulder function prior to injury. The range of shoulder motion and muscle power were evalu...

Substantial evidence suggests that nervous systems simplify motor control of complex body geometries by use of higher level functional units, so called motor primitives or synergies. Although simpler, such high level functional units still require an adequate controller. In a previous study, we found that kinematic interjoint couplings allow the extraction of simple movement synergies during un...

Hemiarthroplasty has been recommended for 3- and 4-part fractures of the proximal humerus. Outcomes are most affected by final implant and tuberosity position. Reports of outcome and management of head-split fractures with humeral head replacement are lacking. The purpose of this study was to report the outcomes after humeral head replacement and the radiographic characteristics identified in h...

Arthroscopic rotator cuff repair is a reliable option for symptomatic patients who have failed conservative treatments. Limited evidence exists regarding early rehabilitation time points (less than 1 year) and the influence of tear size. The authors sought to determine whether a difference exists in pre- and postoperative range of motion among small, medium, and large isolated rotator cuff tear...

We use first-principles calculations to uncover and explain a new type of anomalous low-velocity stopping effect in proton-irradiated graphene. attribute shoulder feature that occurs exclusively for channeling protons enhanced electron capture from $\sigma$+$\pi$ orbitals. Our analysis emission indicates backward is more sensitive proton trajectory than forward could thus produce higher contras...

BACKGROUND The latissimus dorsi (LD) muscle or myocutaneous flap is one of the most commonly used flaps and is believed to result in minimal donor-side morbidity. The impact on shoulder function from LD removal is important due to the common nature of this procedure. Previous studies have been performed after relatively short follow-up time and mostly after breast reconstruction. The purpose of...

PURPOSE To evaluate outcomes of arthroscopic rotator cuff repair in patients aged 70 years or older. METHODS We identified 44 consecutive patients aged 70 years or older undergoing primary all-arthroscopic repair of symptomatic full-thickness tears of the rotator cuff. A minimum 2-year follow-up was performed by an independent examiner including range of motion and dynamometer strength testin...

BACKGROUND Partial humeral head resurfacing arthroplasty uses a stemless device, which conserves bone and restores normal anatomy. We hypothesized that this does not offer a reasonable alternative to full resurfacing or total shoulder arthroplasty. METHODS We performed a retrospective study of 39 shoulders with focal chondral defects of the humeral head treated with partial resurfacing arthro...