Anatomic and Biomechanical Evaluation of Ulnar Tunnel Position in Medial Ulnar Collateral Ligament Reconstruction.

Background: Although numerous techniques of reconstruction of the medial ulnar collateral ligament (mUCL) have been described, limited evidence exists on the biomechanical implication of changing the ulnar tunnel position despite the fact that more recent literature has clarified that the ulnar footprint extends more distally than was appreciated in the past.

Purpose: To evaluate the size and location of the native ulnar footprint and assess valgus stability of the medial elbow after UCL reconstruction at 3 ulnar tunnel locations.

Study Design: Controlled laboratory study.

Outpatient Total Shoulder Arthroplasty Does Not Increase the 90-Day Risk of Complications Compared With Inpatient Surgery in Prescreened Patients.

Outpatient total joint arthroplasty is becoming a more attractive option for hospitals, surgeons, and patients. In this study, the authors evaluated the safety of outpatient shoulder arthroplasty by comparing an outpatient cohort with an inpatient cohort. Ninety-day outcomes of consecutively performed elective shoulder arthroplasty cases from 2012 to 2016 were retrospectively reviewed.

Anatomic Evaluation of the Sacroiliac Joint: A Radiographic Study with Implications for Procedures.

Background: Sacroiliac joint (SI) pain is increasingly being recognized as a source of low back pain. Injections and percutaneous type procedures are performed to treat symptomatic joints. However, there are limited studies available assessing the anatomy of the SI joint in vivo among patients with pain.

Prevalence of painful peroneal tubercles in the pediatric population.

Pain isolated to the lateral aspect of the heel can be difficult to diagnose, particularly in the growing child. Peroneal tendinopathy or frank tears of the peroneal tendons secondary to an enlarged peroneal tubercle has been implicated as a potential source of pain in adults. Neither the prevalence of enlarged peroneal tubercles in the pediatric population nor the number of symptomatic tubercles in children has been elucidated.

Continuous femoral nerve blocks: varying local anesthetic delivery method (bolus versus basal) to minimize quadriceps motor block while maintaining sensory block.

Background: Whether the method of local anesthetic administration for continuous femoral nerve blocks--basal infusion versus repeated hourly bolus doses--influences block effects remains unknown.

Methods: Bilateral femoral perineural catheters were inserted in volunteers (n = 11). Ropivacaine 0.