Nail-plate Combination Treatment of Ipsilateral Humeral Shaft and Distal Humerus Fractures - A Case Report.

Introduction: Humeral shaft and distal humerus fractures have several different treatment options, including plate fixation and intramedullary nailing. Each has its own benefits, but typically, they are not used in conjunction. While nail-plate combinations (NPCs) have become more common in the lower extremity, literature on their use in upper extremity fractures remains scarce.

An Immunologic and Biomechanical Comparison of Polyether Ether Ketone-Zeolite and Polyether Ether Ketone Interbody Fusion Devices.

Study Design: A laboratory study comparing polyether ether ketone (PEEK)-zeolite and PEEK spinal implants in an ovine model.

Objective: This study challenges a conventional spinal implant material, PEEK, to PEEK-zeolite using a nonplated cervical ovine model.

Summary Of Background Data: Although widely used for spinal implants due to its material properties, PEEK is hydrophobic, resulting in poor osseointegration, and elicits a mild nonspecific foreign body response.

Five Years In: The AAOS Resident Assembly, "Bidirectional Communication," and Early Career Involvement in Orthopaedic Leadership.

Established in 2014, the American Academy of Orthopaedic Surgeons (AAOS) Resident Assembly (RA) has served as a mode of "bidirectional communication" between AAOS and a combined resident body. Training and education initiatives relevant to the current issues facing residency training can be passed up to and directly addressed by the leadership of AAOS, whereas AAOS recruitment and membership initiatives can be disseminated to the full resident body through the RA. Since its inception in 2014, the RA has grown markedly, with representation from most MD and DO residency programs in the United States and Canada.

Biomechanical Stability of Primary and Revision Sacroiliac Joint Fusion Devices: A Cadaveric Study.

Study Design: An in vitro biomechanics study.

Objective: To evaluate the efficacy of triangular titanium implants in providing mechanical stabilization to a sacroiliac joint with primary and revision sized implants.

Methods: Ten lumbopelvic cadaveric specimens were tested in 4 stages: intact, pubic symphysis sectioned, primary, and simulated revision.

Gene transfer to human joints: progress toward a gene therapy of arthritis.

This article describes the clinical application of gene therapy to a nonlethal disease, rheumatoid arthritis (RA). Intraarticular transfer of IL-1 receptor antagonist (IL-1Ra) cDNA reduces disease in animal models of RA. Whether this procedure is safe and feasible in humans was addressed in a phase I clinical study involving nine postmenopausal women with advanced RA who required unilateral sialastic implant arthroplasty of the 2nd-5th metacarpophalangeal (MCP) joints.

Helmet and shoulder pad removal in suspected cervical spine injury: human control model.

Study Design: Digital fluoroscopy was used to evaluate the motion in normal men during helmet and shoulder pad removal.

Objectives: To observe the amount of motion that occurs during the removal of helmet and shoulder pads in an uninjured spine.

Summary Of Background Data: Removal of shoulder pads and helmet from a football player with suspected cervical spine injury can be particularly hazardous.

Allogeneic transfusion requirements after autologous donations in posterior lumbar surgeries.

Study Design: A retrospective study of blood transfusion practices after posterior lumbar spine surgery was performed.

Objectives: To determine the overall use rate of autologous blood donations for different spine surgeries, and to identify the risk of requiring additional allogeneic blood transfusions.

Summary Of Background Data: In an attempt to avoid allogeneic blood transfusions and its associated risks, patients frequently are asked to donate autologous blood before many elective spine surgeries.