Peri-articular elbow fracture fixations with magnesium implants and a review of current literature: A case series.

BACKGROUND: In recent years, the use of Magnesium alloy implants have gained renewed popularity, especially after the first commercially available Conformité Européenne approved Magnesium implant became available (MAGNEZIX® CS, Syntellix) in 2013. AIM: To document our clinical and radiographical outcomes using magnesium implants in treating peri-articular elbow fractures. METHODS: Our paper was based on a retrospective case series design. Intra-operatively, a standardized surgical technique was utilized for insertion of the magnesium implants. Post - operatively, clinic visits were standardized and physical exam findings, functional scores, and radiographs were obtained at each visit. All complications were recorded. RESULTS: Five patients with 6 fractures were recruited (2 coronoid, 3 radial head and 1 capitellum). The mean patient age and length of follow up was 54.6 years and 11 months respectively. All fractures healed, and none exhibited loss of reduction or complications requiring revision surgery. No patient developed synovitis of the elbow joint or suffered electrolytic reactions when titanium implants were used concurrently. CONCLUSION: Although there is still a paucity of literature available on the subject and further studies are required, magnesium implants appear to be a feasible tool for fixation of peri-articular elbow fractures with promising results in our series.

Mortality rates for hip fracture patients managed surgically and conservatively in a dedicated unit in Singapore.

INTRODUCTION: At our hospital, an unusually high proportion of patients and families opted for conservative management of hip fractures. This study aimed to compare the mortality rates of patients with hip fractures treated conservatively to that of operatively managed patients in a dedicated hip fracture unit. MATERIALS AND METHODS: Retrospective analysis was done for patients who were treated for hip fractures between January 2015 and October 2017 in a Hip Fracture Unit at a tertiary hospital. Patients were managed non-operatively or surgically after discussion with the multi-disciplinary team. RESULTS: 233 patients were treated conservatively and 781 underwent operative management for hip fractures. Patients managed non-operatively had a higher inpatient, 30-day and 1-year mortality rates. Inpatient mortality was 6.01% for conservatively managed compared to 0% for operative management. 30-day mortality for conservatively managed patients was 8.58% as compared to 0% for operatively managed patients, and 1-year mortality was 33.05% as opposed to 8.96%. There was an association seen with the type of management of hip fractures and that of inpatient death (p = 0.000), death in 30 days (p = 0.000) and death in 1 year (p = 0.000). The type of management was a predictive factor in 1-year mortality (p = 0.000). The average number of co-morbidities in conservatively managed patients was 5.2 compared to surgically managed patients of 4.0. Conservatively managed hip patients had a higher prevalence of stroke, chronic kidney disease and ischemic heart disease. Complications during hospital stay were comparable for both groups. The mean length of hospital stay was similar for both groups. CONCLUSION: Surgical intervention for hip fractures is associated with lower inpatient, 30-day and 1-year mortality rates. However, patient co-morbidities and pre-morbid conditions should also be considered. LEVEL OF EVIDENCE: IV.

Disseminated intravascular coagulation following femoral nailing in a metastatic prostate carcinoma patient - A case report.

INTRODUCTION: Disseminated intravascular coagulation (DIC) is a rare condition that is known to affect patients with metastatic prostate adenocarcinoma. In an unsuspecting orthopaedic surgeon, DIC could lead to significant morbidity and mortality. This article highlights another such case and discusses management strategies to help improve clinical outcomes for these patients. CASE: A 70-year-old male with metastatic prostate adenocarcinoma underwent prophylactic intramedullary nailing of an impending right femur pathological fracture. Surgery was uneventful, however postoperatively he was haemodynamically unstable with heavily soaked dressings. Laboratory investigations revealed DIC. Supportive treatment and correction of coagulopathy were undertaken. Ketoconazole was also initiated by Urology Services to treat the underlying condition of metastatic prostate carcinoma. Unfortunately, the patient responded poorly and passed away. CONCLUSION: DIC is rarely encountered in orthopaedic surgery, but carries significant morbidity and mortality risks. Patients with risk factors, in particular metastatic cancer, should be screened for non-overt pre-DIC state and coagulopathies corrected preoperatively. Initiating treatment of underlying condition can be considered preoperatively in established non-overt DIC. Operative technique can also be modified to minimise risk of fat or tumour emboli. Early recognition, prompt resuscitation and timely treatment of underlying condition may be able to improve the outcomes in these patients.

The management of concomitant septic arthritis of the knee and femoral osteomyelitis - A case series and literature review.

We present a case series comprising three patients with concomitant septic arthritis of the knee and osteomyelitis of the femur. Early advanced imaging rendered the accurate diagnosis of the condition and the appropriate surgical approach and technique used to treat the infection. Repeated extensive surgical debridement, irrigation and insertion of antibiotic-impregnated cement rod into the femur were required, in addition to long term antibiotics. The infection in all three cases was eradicated successfully. Following a period of physical rehabilitation, they had fairly preserved independent ambulatory function. We advocate a high index of suspicion of this condition with subsequent early advanced imaging for a timely diagnosis. In addition, we described our challenges in the fabrication process of the antibiotic-impregnated cement rod.

Return to work after surgically treated acetabular fractures in an Asian population.

BACKGROUND: Acetabular fractures are rare but are severe injuries that occur in younger patients with a significant economic impact. There is limited evidence describing the return to work rates in this group of patients. The aim of our study was to examine the rate and time to return to work (RTW) after surgical fixation of acetabular fractures. METHODS: We performed a retrospective study on all patients with surgically treated acetabular fractures at a single institution between 1 July 2010 and 31 December 2018. Medical records were reviewed to analyze demographics such as age, gender, occupation and RTW characteristics. RESULTS: There were 30 patients, with a mean age of 43.3 ± 12.7 years. There were 26 patients who were employed prior to injury. The most common mechanism of injury was from a road traffic accident (73.3%). The average ISS was 8.9 ± 5.2. The mean follow-up duration was 21.5 months ± 15.7. The rate of RTW was 80.8%. Eighteen patients (85.7%) returned to the same job and duties, while two (9.5%) returned with same job but lighter duties and one (4.8%) had to change job. Three patients (11.5%) retired. The average time to return to work was 8.3 months (range 2-57.5). RTW rates were 15.4%, 61.5%, 69.2% at 3, 6 and 12 months, respectively. CONCLUSION: Acetabular fractures can lead to loss of economic productivity, with 80.8% of patients returning to work. Work reintegration programs after acetabular fractures are important.

Risk factors for mechanical failure of intertrochanteric fractures after fixation with proximal femoral nail antirotation (PFNA II): a study in a Southeast Asian population.

INTRODUCTION: Intertrochanteric hip fractures pose a significant health problem. The proximal femur nail anti-rotation (PFNA IIDePuySynthes) is the most commonly used implant for intramedullary nailing of unstable intertrochanteric fractures at our institution. We aim to identify the risk factors predisposing to mechanical failure of intertrochanteric hip fractures fixation with PFNAII in our Southeast Asian population. MATERIALS AND METHODS: We retrospectively reviewed 295 consecutive patients who underwent PFNA fixation for intertrochanteric fractures of the proximal femur between January 2014 and June 2018 at our institution. Exclusion criteria included a follow-up period of less than 4 months and patients with polytrauma. 204 patients were eligible for analysis, of which 22 had mechanical failure of PFNAII. We compared these patients with respect to their demographics, medical co-morbidities, quality of reduction according to the Baumgartner scale, calcar restoration, blade position according to Cleveland Zones, the stability of fracture according to OTA/AO classification, neck-shaft-angle, tip-apex distance, as well as neck of femur bone mineral density T-score. Patients were followed up for a minimum of 4 months and until fracture union or complication had occurred. Logistic regression analysis was performed to determine the odds ratio for mechanical failure for selected variables. RESULTS: Good quality of reduction reduced risk of mechanical failure whilst posterior blade position in lateral hip X-ray predicted it, with odds ratios of 0.147 (95% confidence interval, 0.030-0.733; p = 0.019) and12.12 (95% confidence interval, 1.583-92.825; p = 0.016) respectively. On univariate analysis, the mechanical failure group were older, had poorer calcar restoration, more unstable fracture patterns, more varus neck-shaft angle, and trochanteric starting points that were lateral to or on the tip of the greater trochanter. However, these were not significant in multivariate analysis. Tip apex distance, the severity of osteoporosis, presence of diabetes, chronic kidney disease and serum vitamin D levels were not significant predictors of failure. CONCLUSIONS: To avoid mechanical failure, one should aim to achieve a good quality of reduction and centre blade position on lateral hip X-ray. Tip apex distance did not predict mechanical failure in our study.

Cephalomedullary blade cut-ins: a poorly understood phenomenon.

OBJECTIVES: Proximal femoral nail antirotation (PFNA) cut-in is a unique phenomenon seen in pertrochanteric hip fractures treated with the PFNA. Cut-in refers to the superomedial migration of the proximal femoral blade into the femoral head and hip joint. We recognize that cut-in is a completely separate entity from the well-described cut-out failure. This study assesses relevant radiological and patient risks factors for cut-in. DESIGN: Retrospective multicenter study looking at patients with pertrochanteric hip fractures managed with the Synthes PFNA SETTING: Four tertiary hospitals over 7 years. PATIENTS: Patients with cut-ins were identified. OUTCOME MEASUREMENT: The radiological appearance of this mode of failure was assessed and compared to cut-outs. Patient demographics, fracture configuration, time to implant failure (cut-in), bone mineral density, tip-apex distance, neck-shaft angle and position of the tip of the helical blade in the femoral head were collected. RESULTS: There was a total of 1027 patients across 4 institutions with 23 patients with cut-in. Average neck-shaft angle was 133 degrees. 16 out of 19 patients had severe osteoporosis with BMD < - 2.5. 14 of 23 patients had poor placement of the blade. 13 of 23 had a tip-apex distance of more than 20 mm. CONCLUSION: We propose a standardized nomenclature of "cut-in" for the phenomenon of superomedial migration of the proximal femoral blade. An anatomical neck-shaft reduction, accurate blade placement and increased surveillance for patients with severe osteoporosis are required to reduce the incidence and morbidity of cut-in.