Tandem Walk in Simulated Martian Gravity and Visual Environment.

Astronauts returning from long-duration spaceflights experience visual-vestibular conflicts that causes motion sickness, perceptions that the environment is moving when it is not, and problems with walking and other functional tasks. To evaluate whether astronauts will have similar decrements after they land on Mars following exposure to weightlessness, participants were held by a device that offloads their weight, first entirely (0 G), and then partially (0.38 G) or not at all (1 G).

Addition of Allograft and Acromioclavicular Cerclage Improves Outcomes of Arthroscopic-Assisted Reconstruction of Acromioclavicular Separation With a Single Coracoclavicular Tunnel.

Objective The purpose of this study was to prospectively evaluate the functional outcome and complications of unstable acromioclavicular (AC) joint separations repaired with a single coracoclavicular tunnel utilizing an arthroscopic-assisted curved button technique. Methods Thirty-five patients with a minimum of 12 months follow-up underwent arthroscopic-assisted AC joint reconstruction with suspensory button and 2 mm suture tape fixation using 3 mm tunnels. Functional outcome scores were analyzed preoperatively and at final follow-up with all complications noted.

Outcomes Following Double-Row and Medial Double-Pulley Rotator Cuff Repair.

Multiple arthroscopic double-row repair techniques have been developed to treat full-thickness rotator cuff tears. However, healing rates and functional outcomes vary among these repair methods. A suture tape and medial double-pulley (STDP) technique that incorporated 2-mm suture tape for a knotless double-row with a broad double-mattress suture medially was developed as an alternative method to other double-row repair techniques.

Arthroscopic Biceps Tenodesis Outcomes: A Comparison of Inlay and Onlay Techniques.

Background: Arthroscopic biceps tenodesis (ABT) high in the groove can be achieved using an inlay or an onlay technique. However, there is little information comparing outcomes between the 2.

Purpose: To compare postoperative healing and functional outcomes of ABT high in the groove performed using either an onlay or an inlay technique.

Surgical Management of Massive Irreparable Cuff Tears: Superior Capsular Reconstruction.

Purpose Of Review: Superior capsular reconstruction (SCR) is a surgical procedure that has been developed to provide an alternative for joint preservation in patients with massive irreparable rotator cuff tears. The purpose of this review is to assess the improvements in biomechanical properties and functional outcomes of this novel procedure.

Recent Findings: Biomechanically, SCR decreases superior translation and subacromial contact pressure.

Functional Outcome and Healing With a Load-Sharing Rip-Stop Repair Compared With a Single-Row Repair for Large and Massive Rotator Cuff Tears.

Purpose: To prospectively compare the healing rates and functional outcomes of large and massive rotator cuff tears repaired with either a load-sharing rip-stop (LSRS) technique or single-row (SR) repair.

Methods: We performed a retrospective comparison of arthroscopic rotator cuff repairs of large and massive tears performed with 2 different repair techniques. Over a 1-year period, all tears with limited tendon mobility were repaired with an LSRS technique.

A Tensionable Method for Subscapularis Repair after Shoulder Arthroplasty.

Background: This study compared the biomechanical properties of a new lesser tuberosity (LTO) repair with a tensionable construct with suture tape and preplaced racking hitches vs. a traditional LTO repair using 4 high-strength sutures. The hypothesis was that there would be no difference between the 2 constructs.

Arthroscopy-assisted Treatment of Displaced Distal Clavicle Fractures Utilizing Curved Buttons and Suture Tape With a Single Coracoclavicular Tunnel.

Background: Distal third clavicle fractures are associated with high rates of nonunion. Acceptable healing rates have been reported; however, complications and the need for additional procedures are a concern. The purpose of this study was to evaluate the functional outcomes and healing rates of an arthroscopy-assisted technique for fixation of unstable distal third clavicle fractures.

Continuous Cryotherapy vs Ice Following Total Shoulder Arthroplasty: A Randomized Control Trial.

Postoperative pain management is an important component of total shoulder arthroplasty (TSA). Continuous cryotherapy (CC) has been proposed as a means of improving postoperative pain control. However, CC represents an increased cost not typically covered by insurance.

Triple-Loaded Suture Anchors Versus a Knotless Rip Stop Construct in a Single-Row Rotator Cuff Repair Model.

Purpose: To compare the biomechanical properties of single-row repair with triple-loaded (TL) anchor repair versus a knotless rip stop (KRS) repair in a rotator cuff repair model.

Methods: Rotator cuff tears were created in 8 cadaveric matched-pair specimens and repaired with a TL anchor or KRS construct. In the TL construct, anchors were placed in the greater tuberosity and then all suture limbs were passed through the rotator cuff as simple sutures and tied.

Ultrasonic Percutaneous Tenotomy of Common Extensor Tendons for Recalcitrant Lateral Epicondylitis.

Tennis elbow is a common musculoskeletal condition affecting middle-aged patients with symptoms usually lasting from 6 months to 2 years. The vast majority of individuals will respond to conservative therapy; however, some will require surgical intervention. A new treatment system has been developed for use with ultrasound guidance in the ultrasonic microresection of tendinopathic tissue.

Radiographic changes differ between two different short press-fit humeral stem designs in total shoulder arthroplasty.

Background: The purpose of this study was to compare the radiographic changes of the humerus in the short term after total shoulder arthroplasty with two different short-stem humeral components. The hypothesis was that there would be no difference in radiographic changes or functional outcome based on component type.

Methods: A retrospective review was conducted of primary total shoulder arthroplasties performed with a short press-fit humeral component.

Proximal stress shielding is decreased with a short stem compared with a traditional-length stem in total shoulder arthroplasty.

Background: This study compared the outcome and radiographic humeral adaptations after placement of a traditional-length (TL) or short-stem (SS) humeral component during total shoulder arthroplasty (TSA). The hypothesis was there would be no difference in outcome or radiographic adaptations.

Methods: A multicenter retrospective review was performed of primary TSAs performed with a TL or SS press-fit humeral component.

Functional Outcome and Healing of Large and Massive Rotator Cuff Tears Repaired With a Load-Sharing Rip-Stop Construct.

Purpose: To prospectively review functional outcomes and healing rates of large and massive rotator cuff tears repaired with a load-sharing rip-stop (LSRS) technique.

Methods: Twenty-one consecutive patients underwent arthroscopic rotator cuff repair with an LSRS construct between January and December 2014. Seventeen patients with a minimum of 2 years' follow-up were included.

Five- to ten-year follow-up with a partially cemented all-polyethylene bone-ingrowth glenoid component.

Background: Although total shoulder arthroplasty has demonstrated better clinical outcomes than hemiarthroplasty, glenoid component loosening is a common complication. Recently, a novel partially cemented all-polyethylene fluted central peg bone-ingrowth component was introduced.

Methods: Forty-two consecutive total shoulder arthroplasties from 2003 to 2007 performed by a single surgeon were evaluated radiographically and clinically with American Shoulder and Elbow Surgeons (ASES) scores and range of motion.

Functional and radiographic long-term outcomes of hemiarthroplasty for proximal humeral fractures.

Background: Hemiarthroplasty is the preferred surgical procedure for 3- and 4-part proximal humeral fractures. Our retrospective study examined functional and radiographic outcomes at 2- and 5-year follow-up in patients who received a hemiarthroplasty for 3- and 4-part proximal humeral fractures.

Materials And Methods: Forty-seven consecutive patients of a single surgeon treated with a cemented shoulder hemiarthroplasty between 2000 and 2006 were followed up.

Acute compartment syndrome of the forearm following autologous blood reinfusion: a case report.

Compartment syndrome is a condition with multiple reported etiologies, and permanent disability may ensue if not treated in a timely fashion. We report the first case, to our knowledge, of acute forearm compartment syndrome caused by intravenous autologous blood reinfusion. The patient underwent forearm fasciotomy, and hematoma was encountered deep to the superficial volar fascia, presumably extravasated from the reinfusion catheter.