Pelvic Incidence-Lumbar Lordosis Mismatch Is Not Associated with Early Reoperation for Adjacent Segment Disease After Lumbar Fusion.

Objective: To compare the 2-year reoperation rates for adjacent segment disease between patients with pelvic incidence-lumbar lordosis (PI-LL) mismatch postoperatively and patients with normal PI-LL measurements.

Methods: Patients undergoing elective 1- to 2-level lumbar fusion for degenerative conditions between 2016 and 2018 were retrospectively reviewed. Spinopelvic radiographic parameters immediately postoperation were measured, and PI-LL mismatch was determined using the age-adjusted thresholds defined in Lafage et al.

Immediate Implant Placement, Immediate Load With Same-Day Fully Digital Fabrication of a Screw-Retained Provisional Implant Prosthesis.

This article describes the use of technology capable of converting a failed dentition to a full-arch screw-retained implant-supported provisional restoration in one day using a fully digital restorative protocol. With this expedited digital treatment, the transition to a restored dentition is completed without the need for any physical impressions. Predicated on facially driven virtual smile designs, sophisticated engineering designs, complex algorithms, artificial intelligence, and novel laboratory and clinical workflows, the protocol allows for streamlined, same-day digital delivery of an in-house 3D-printed provisional prosthesis after implant placement surgery.

Lower socioeconomic status is not associated with severity of adolescent idiopathic scoliosis: a matched cohort analysis.

Purpose: Assessing the influence of socioeconomic status (SES) on the severity of adolescent idiopathic scoliosis (AIS) on initial presentation to the spinal surgeon remains a challenge. The area deprivation index (ADI) is a validated measure of SES that abstracts multiple domains of disadvantage into a single score. We hypothesized that patients with low SES (high ADI) present to the orthopedic clinic with more advanced curve pathology.

Intraoperative Sensory Signals Predict Prognosis for Patients with Traumatic Cervical Spinal Cord Injury.

Objective: In patients with traumatic cervical spinal cord injury (tCSCI), the potential role of intraoperative neuromonitoring as a prognostic tool has been insufficiently studied. This study aimed to determine if detectable signals during intraoperative neuromonitoring portend a greater likelihood of recovery for patients with tCSCI.

Methods: Patients who underwent decompression and surgical fixation following tCSCI were retrospectively reviewed through previously prospectively collected data from the Surgical Timing in Acute Spinal Cord Injury Study.

Catastrophic acute failure of pelvic fixation in adult spinal deformity requiring revision surgery: a multicenter review of incidence, failure mechanisms, and risk factors.

Objective: There are few prior reports of acute pelvic instrumentation failure in spinal deformity surgery. The objective of this study was to determine if a previously identified mechanism and rate of pelvic fixation failure were present across multiple institutions, and to determine risk factors for these types of failures.

Methods: Thirteen academic medical centers performed a retrospective review of 18 months of consecutive adult spinal fusions extending 3 or more levels, which included new pelvic screws at the time of surgery.