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Infantile DDH is diagnosed with neonatal examination and patients are routinely followed into adolescence. Adolescent/adult AD is not detected until symptoms develop. Further study is needed to determine whether younger family members of patients with hip osteoarthritis should be screened to detect potentially at-risk hips.

Background: While initially developed to improve function in patients with chronic rotator cuff deficiency, the success of reverse total shoulder arthroplasty (RTSA) has led to expanding indications including fracture sequelae and revision of failed hemi-or total shoulder arthroplasty. While primary RTSA carries complication and revision rates of up to 75% and 2%-10%, respectively, these rates are higher in RTSA performed in a revision setting. Methods: The current literature on RTSA and revision RTSA was reviewed to determine the most common complications and treatment strategies to address these complications. Results: The most common complications leading to revision of RTSA are instability, infection, humeral implant loosening, and glenoid implant loosening. Each of these presents unique technical challenges for the surgeon. Retention or replacement of a reverse prosthesis affords high patient satisfaction and better functional outcomes than resection, but may require several additional surgeries. In cases in which reverse components cannot be implanted, salvage options, including resection arthroplasty and conversion to hemiarthroplasty, provide satisfactory pain relief but limited function. Discussion: As the number of RTSA performed increase, so will the number of revisions. In this article, current treatment strategies for addressing the challenges of revision reverse shoulder arthroplasty are discussed.

Propionibacterium species are associated with normal skin flora and cultures may be dismissed as contaminants. They are increasingly recognized as a cause of septic arthritis following shoulder arthroplasty and arthrotomy. We identified three cases of Propionibacterium septic arthritis in native joints mimicking atypical osteoarthritis and review the literature, clinical course, and treatment of 18 cases. Two cases of Propionibacterium acne in native knee joints and one in a sternoclavicular joint are described. A literature search for Propionibacterium septic arthritis was performed. Clinical course, treatment, and outcome are reviewed for all cases. Our three cases were combined with 15 cases from the literature. Fourteen cases showed few signs of acute infection, slow culture growth, and delayed diagnosis. In 3 cases an early culture was dismissed as a contaminant. Six cases were reported as caused by recent arthrocentesis. Fifteen cases were cured with antibiotics, although 5 of these 15 also required surgical intervention. Two patients were diagnosed while undergoing surgery for osteoarthritis. Four patients required arthroplasty and two of our patients will require arthroplasty for good functional results. Propionibacterium as a cause of septic arthritis in native joints demonstrates few signs of acute infection, presents with prolonged course, and is often misdiagnosed or unsuspected. Anaerobic growth may be delayed or missed altogether, and outcomes are consequently poor. Consider Propionibacterium septic arthritis in atypical osteoarthritis prior to arthroplasty.

Introduction: Identifying patient factors that affect length of stay (LOS) and discharge disposition after shoulder arthroplasty is key in managing patient expectations. In this systematic review, we identify patient-specific covariates that correlate with increased LOS and need for discharge to a facility. Methods: We searched biomedical databases to identify associations between patient-specific factors and LOS and discharge disposition after shoulder arthroplasty. We included all studies involving hemiarthroplasty, anatomic shoulder arthroplasty, and reverse shoulder arthroplasty. Reported patient and provider factors were evaluated for their association with increased LOS and discharge to a facility. Results: Twenty-two studies were identified. Age >65 years, female sex, obesity, and reverse shoulder arthroplasty were associated with extended LOS and correlated with discharge to a facility. Greater hospital and surgeon volume were associated with decreased LOS and decreased risk of discharge to a facility. Local injection of liposomal bupivacaine combined with intravenous dexamethasone was associated with reduced LOS. Discussion: Patient factors affecting LOS and likelihood of discharge to a facility include age >65 years, female sex, diabetes, obesity, and reverse shoulder arthroplasty. These factors can be used to develop studies to preoperatively predict outcomes after shoulder arthroplasty and to help identify patients who may be at risk of prolonged postoperative admission. Level of Evidence: Prognostic level IV