An Orthopaedic Surgeon Led Osteoporosis (OSLO) Model of Care reduces early recurrent fracture rates and improves treatment compliance in patients treated for osteoporotic fractures.

This study aims to evaluate the efficacy of an Orthopaedic Surgeon Led Osteoporosis Model of Care (OSLO-MoC) in improving care of patients with primary osteoporotic fractures. The OSLO-MOC has shown to be effective in improving osteoporotic medication initiation and compliance and reducing secondary fracture rates in patients. PURPOSE: This study aims to evaluate the efficacy of an Orthopaedic Surgeon Led Osteoporosis Model of Care (OSLO-MoC) as compared to a Case Manager Led Osteoporosis Model of Care (CMLO-MoC) in reducing early osteoporotic re-fracture rates and treatment compliance in patients. METHODS: This was a single centre, retrospective, comparative cohort study of all patients screened and treated for secondary osteoporotic fracture prevention from the 2008 to 2018 at an orthopaedic surgical unit. From the 2008 to 2013, patients were recruited under the CMLO-MoC and from 2014 to 2018, under the OSLO-MOC. Logistics regression analysis was used to identify significant predictors such as OSLO-MOC implementation, gender, ethnicity, marital status and education level for patient recruitment, treatment compliance and secondary fracture rates at 12-month follow-up. RESULTS: Over a 10-year period, 7388 patients were screened of which 2855 patients were eligible for analysis. A total of 1234 patients were recruited under CMLO-MoC and 1621 patients under OSLO-MOC. Implementation of the OSLO-MOC was associated with greater patient recruitment, OR 1.26 (95%CI 1.06-1.49, P = 0.007). Of the 2855 patients recruited, OSLO-MOC implementation, OR 2.61 (95%CI 2.03-3.36, P < 0.001), and a higher level of education, OR 1.428 (95%CI 1.02-1.43, P = 0.037), were associated with improved compliance to medication at 12 months. OSLO-MOC implementation was the only factor associated with reduced risk of secondary fractures at 12 months, OR 0.14 (95%CI 0.03-0.66, P = 0.013). CONCLUSION: The OSLO-MOC has shown to be effective in reducing the rate of re-fracture and osteoporotic medication initiation and compliance of patients. LEVEL OF EVIDENCE: IV.

Irreducible dislocated total hip replacement due to intra-articular incarceration of bone cement: A case report.

INTRODUCTION: Dislocation following total hip replacement is a well-documented complication. We present an unusual cause of failure to achieve a concentric closed reduction of a cemented total hip replacement which has never previously been reported. PRESENTATION OF CASE: A 78-year-old female patient had an unsuccessful closed reduction of a posteriorly dislocated total hip replacement. Careful review of perioperative radiographs revealed a fragment of bone cement incarcerated within the acetabular component blocking reduction. This was confirmed on a subsequent computed tomography scan. Open reduction via a posterior approach with retrieval of the cement fragment was eventually required. DISCUSSION: Observation of important radiological features which may prevent unnecessary further attempts at closed reduction are discussed. We consider reasons for a non-concentric reduction and reflect on the dangers of multiple forced attempts. CONCLUSION: This case emphasises the importance of clinical judgement during closed reduction and highlights a previously unreported cause for non-concentric reduction in a dislocated cemented total hip replacement.