Decrease in incidence of distal radius fractures in Oslo, Norway.

This study reported the incidence of validated adult distal radius fractures in Oslo, Norway, in 2019. The incidence has been reduced over the last 20 years. However, it is still high compared to other regions in Norway and some of the other Nordic countries. PURPOSE: We aimed to report the incidence of distal radius fractures in Oslo in 2019 and compare it to the incidence rates in 1998/1999. METHODS: Patients aged ≥ 20 years resident in Oslo sustaining a distal radius fracture in 2019 were identified by electronic diagnosis registers, patient protocols, and/or radiology registers. The diagnosis was verified using medical records and/or radiology descriptions. We used the same method as the previous study from Oslo, making the comparison over time more accurate. The age-adjusted incidence rates and the age-standardized incidence rate ratio (IRR) were calculated. RESULTS: The absolute number of fractures decreased from 1490 in 1998/1999 to 1395 in 2019. The IRR for women and men in the age group ≥ 20 years in 2019 compared to 1998/1999 was 0.77 (95% CI 0.71-0.84) and 0.77 (95% CI 0.66-0.90), respectively. The IRR for women and men in the age group ≥ 50 years in 2019 compared to 1998/1999 was 0.78 (95% CI 0.71-0.86) and 0.78 (95% CI 0.63-0.97), respectively. For the population in Oslo with Asian background compared to Norwegian background in the age group ≥ 50 years, the IRR in 2019 was 0.57 (95% CI 0.40-0.80) for women and 0.77 (95% CI 0.44-1.37) for men. CONCLUSIONS: The incidence of distal radius fractures in Oslo has decreased over the last 20 years. It is still, however, higher than in other areas of Norway and in some of the other Nordic countries.

Vitamin D status and complications, readmissions, and mortality after hip fracture.

Low vitamin D in patients with hip fracture is common. In the present study, 407 of 872 (47%) patients had serum calcidiol less than 50 nmol/L. Patients with low vitamin D had more delirium, more new hip fractures, and more medical readmissions, but not more orthopedic complications after 1 year. INTRODUCTION: We wanted to study the relation between vitamin D level and postoperative orthopedic and medical complications in patients with hip fracture. In addition, we investigated the effect of giving a single-dose cholecalciferol 100.000 IU. METHODS: Data were taken from the local hip fracture register. Logistic regression analyses including vitamin D level and potentially confounding variables were performed for complications and readmissions. RESULTS: A total of 407 (47%) of 872 included hip fractures had low vitamin D at baseline. A total of 155 (18%) developed delirium, and the risk was higher in vitamin D-deficient patients (odds ratio (OR) 1.48, 95% confidence interval (CI) 1.04 to 2.12; p = 0.03). A total of 261 (30%) were readmitted for non-hip-related conditions. Low vitamin D was associated with a higher risk of medical readmissions within 30 days (OR 1.64 (1.03 to 2.61); p = 0.036) and 12 weeks (OR 1.47 (95% CI 1.02 to 2.12); p = 0.039). There was a higher risk of a new hip fracture (OR 2.84 (95% CI 1.15 to 7.03) p = 0.024) in vitamin D-deficient patients. A total of 105 (12%) developed at least one orthopedic complication, with no correlation to baseline vitamin D. Among vitamin D-deficient patients, those receiving a single-dose of 100.000 IU cholecalciferol had fewer orthopedic complications (OR 0.32 (95% CI 0.11 to 0.97) p = 0.044) the first 30 days after surgery. CONCLUSION: Low vitamin D at admission for hip fracture increased the risk of delirium, a new hip fracture, and medical readmissions, but not orthopedic complications. The role of vitamin D supplementation to prevent orthopedic complications requires further study.

Determinants of trabecular bone score and prevalent vertebral fractures in women with fragility fractures: a cross-sectional sub-study of NoFRACT.

Determinants of trabecular bone score (TBS) and vertebral fractures assessed semiquantitatively (SQ1-SQ3) were studied in 496 women with fragility fractures. TBS was associated with age, parental hip fracture, alcohol intake and BMD, not SQ1-SQ3 fractures. SQ1-SQ3 fractures were associated with age, prior fractures, and lumbar spine BMD, but not TBS. INTRODUCTION: Trabecular bone score (TBS) and vertebral fractures assessed by semiquantitative method (SQ1-SQ3) seem to reflect different aspects of bone strength. We therefore sought to explore the determinants of and the associations between TBS and SQ1-SQ3 fractures. METHODS: This cross-sectional sub-study of the Norwegian Capture the Fracture Initiative included 496 women aged ≥ 50 years with fragility fractures. All responded to a questionnaire about risk factors for fracture, had bone mineral density (BMD) of femoral neck and/or lumbar spine assessed, TBS calculated, and 423 had SQ1-SQ3 fracture assessed. RESULTS: Mean (SD) age was 65.6 years (8.6), mean TBS 1.27 (0.10), and 33.3% exhibited SQ1-SQ3 fractures. In multiple variable analysis, higher age (ßper SD = - 0.26, 95% CI: - 0.36,- 0.15), parental hip fracture (ß = - 0.29, 95% CI: - 0.54,- 0.05), and daily alcohol intake (ß = - 0.43, 95% CI - 0.79, - 0.08) were associated with lower TBS. Higher BMD of femoral neck (ßper SD = 0.34, 95% CI 0.25-0.43) and lumbar spine (ßper SD = 0.40, 95% CI 0.31-0.48) were associated with higher TBS. In multivariable logistic regression analyses, age (ORper SD = 1.94, 95% CI 1.51-2.46) and prior fragility fractures (OR = 1.71, 95% CI 1.09-2.71) were positively associated with SQ1-SQ3 fractures, while lumbar spine BMD (ORper SD = 0.75 95% CI 0.60-0.95) was negatively associated with SQ1-SQ3 fractures. No association between TBS and SQ1-SQ3 fractures was found. CONCLUSION: Since TBS and SQ1-SQ3 fractures were not associated, they may act as independent risk factors, justifying the use of both in post-fracture risk assessment.

Long-term outcomes after high-energy open tibial fractures: Is a salvaged limb superior to prosthesis in terms of physical function and quality of life?

PURPOSE: The aim of this study was to describe complication rates and long-term functional outcomes among patients with amputated versus reconstructed limb after high-energy open tibial fractures. METHODS: Patients treated operatively for a high-energy open tibial fracture, classified as Gustilo-Anderson (GA) grade 3, at our hospital in the time period 2004-2013 were invited to a clinical and radiographic follow-up at minimum 2 years after injury. Eighty-two patients with 87 GA grade 3 fractures were included. There were 39 type GA 3A, 34 GA 3B, and 14 GA 3C. RESULTS: The GA 3A reconstruction group had the lowest complication rate and the best long-term outcome scores at mean 5 years (range 2-8 years) after injury. Within the group of GA 3B and 3C fractures, we found no significant differences in long-term outcomes among patients with reconstructed versus amputated limbs. The mean physical component summary score of the SF-36 in the reconstruction versus amputation group was 54.2 (95% CI 46.3-62.1) versus 47.7 (95% CI 32.6-62.2), respectively (p = 0.524), while the mean mental component summary score was 63.7 (95% CI 50.6-71.8) versus 59.2 (95% CI 48.8-68.0), respectively (p = 0.603). On the 6-minute walk test, the reconstruction group walked on average 493 m (95% CI 447-535 m) versus 449 m (95% CI 384-518 m) in the amputation group. The return to work rate was 73% (16 of 22) in the reconstruction group versus 50% (7 of 14) in the amputation group (p = 0.166). The mean patient satisfaction score (VAS 0-100) was 67 (95% CI 67-77) in the reconstruction group versus 65 (95% CI 51-76) in the amputation group (p = 0.795). Regardless of the treatment strategy, the complication rate was high. CONCLUSIONS: Amputation should be considered as a viable treatment option, equal to limb salvage, after high-energy open tibial fracture with severe vascular damage or soft tissue loss.

Radiostereometric analysis of hemiarthroplasties of the hip--a highly precise method for measurements of cartilage wear.

OBJECTIVE: Cartilage wear is a feature of osteoarthritis and rheumatoid arthritis. Precise measurements of wear have been difficult. Cartilage wear caused by an artificial articulating joint surface is a well-known feature of hemiarthroplasties. The aim of this study was to demonstrate that radiostereometric analysis (RSA) may be used for three-dimensional measurements of cartilage wear in hemiarthroplasties of the hip. METHOD: We performed a phantom model study to assess the feasibility of a subsequent clinical trial. We showed that the motion of the prosthetic head relative to the pelvis was not influenced by the orientation of the prosthetic head. Twenty-two patients were randomised to treatment with a cemented or an uncemented hemiarthroplasty for an acute femoral neck fracture. Migration of the prosthetic head into the acetabulum was measured using RSA. RESULTS: A mean migration of the prosthetic head into the acetabulum of 0.62 mm was found at 3 months [95% confidence interval (CI): 0.27-0.97] and a further migration of -0.07 mm at 12 months (95% CI: -0.16-0.32). There were no differences between the groups in prosthetic migration or functional outcome. Between three and 12 months, there was no detectable cartilage wear during the first postoperative year. CONCLUSION: Whether the migration during the first 3 months represents a period of bedding in due to a harder opposite surface remains to be shown. RSA may be used for measurement of cartilage wear in hemiarthroplasties of the hip. This study demonstrates a highly precise method for measurements of cartilage wear.

Hemiarthroplasty compared to internal fixation with percutaneous cannulated screws as treatment of displaced femoral neck fractures in the elderly: cost-utility analysis performed alongside a randomized, controlled trial.

UNLABELLED: We estimated the cost-effectiveness of hemiarthroplasty compared to internal fixation for elderly patients with displaced femoral neck fractures. Over 2 years, patients treated with hemiarthroplasty gained more quality-adjusted life years than patients treated with internal fixation. In addition, costs for hemiarthroplasty were lower. Hemiarthroplasty was thus cost effective. INTRODUCTION: Estimating the cost utility of hemiarthroplasty compared to internal fixation in the treatment of displaced femoral neck fractures in the elderly. METHODS: A cost-utility analysis (CUA) was conducted alongside a clinical randomized controlled trial at a university hospital in Norway; 166 patients, 124 (75%) women with a mean age of 82 years were randomized to either internal fixation (n = 86) or hemiarthroplasty (n = 80). Patients were followed up at 4, 12, and 24 months. Health-related quality of life was assessed with the EQ-5D, and in combination with time used to calculate patients' quality-adjusted life years (QALYs). Resource use was identified, quantified, and valued for direct and indirect hospital costs and for societal costs. Results were expressed in incremental cost-effectiveness ratios. RESULTS: Over the 2-year period, patients treated with hemiarthroplasty gained 0.15-0.20 more QALYs than patients treated with internal fixation. For the hemiarthroplasty group, the direct hospital costs, total hospital costs, and total costs were non-significantly less costly compared with the internal fixation group, with an incremental cost of €2,731 (p = 0.81), €2,474 (p = 0.80), and €14,160 (p = 0.07), respectively. Thus, hemiarthroplasty was the dominant treatment. Sensitivity analyses by bootstrapping supported these findings. CONCLUSION: Hemiarthroplasty was a cost-effective treatment. Trial registration, NCT00464230.

The rate of hip osteoarthritis in patients with proximal femoral fractures versus hip contusion.

UNLABELLED: We found no difference in the rate of radiological hip osteoarthritis in the injured hip when comparing 349 patients with proximal femoral fractures and 112 patients with hip contusion. There was, however, a tendency for more osteoarthritis in patients with trochanteric fractures than in patients with femoral neck fractures. INTRODUCTION: Osteoarthritis (OA) and osteoporotic fractures are two age-related disorders associated with considerable morbidity. There is a clinical impression of an inverse relation between osteoarthritis and osteoporosis, and a protective effect of OA against osteoporotic fractures has been proposed. METHODS: We performed a case-control study in 461 subjects. Cases (n = 349) were patients aged 50 years or above who sustained a proximal femoral fracture from November 2003 to October 2004, registered prospectively in the department's fracture register. Controls (n = 112) were patients aged 50 years or above with the diagnosis of hip contusion, recruited from the hospital's discharge register. Radiographic OA was scored according to Kellgren and Lawrence (K&L), and minimal joint space (MJS) was measured in both hips when possible. A K&L grade II or higher or an MJS less than 2.5 mm was defined as OA. RESULTS: Both in the hip fracture group and in the contusion group mean, the MJS was 3.5 mm on the injured side (p = 0.79). In the fracture group, 31/250 (12%) had MJS <2.5 mm and 16/112 (14%) in the contusion group (p = 0.18). In the fracture group, 40/250 (16%) had a K&L OA grade II or higher, and in the contusion group 20/112 (18%) persons had a K&L OA grade II or higher (p = 0.66). There was a tendency for a higher incidence of OA in patients with trochanteric fractures compared with patients with cervical fractures. CONCLUSIONS: We found no differences on the injured side in the rate of hip OA between hip fracture patients and hip contusion patients.

Coexistence of up-regulated NMDA receptor 1 and glutamate on nerves, vessels and transformed tenocytes in tendinopathy.

Elevated levels of the neurotransmitter glutamate and the presence of its receptor, N-methyl-d-aspartate receptor type 1 (NMDAR1), have been established in patients with tendinopathy, i.e. chronic tendon pain and degeneration. However, whether NMDAR1 is up- or down-regulated in tendinopathy and co-localized with glutamate is still unexplored. We hypothesize that an alteration in tissue expression and in the coexistence of NMDAR1 and glutamate occurs in tendinopathy and might play a role in nociception and possibly also progression of tendon degeneration (tendinosis). We therefore examined the tissue distribution and levels of NMDAR1 and glutamate in biopsies from patients with patellar tendinopathy (n=10) and from controls (n=8). The biopsies were single- and double-stained immunohistochemically for glutamate and NMDAR1 and assessed subjectively and semi-quantitatively. The chronic painful tendons exhibited a significant elevation of NMDAR1 (ninefold), which was independent of the observed increase in glutamate (10-fold). This up-regulation of NMDAR1 and glutamate was found to be co-localized on nerve fibers as well as on morphologically altered tenocytes and blood vessels. None of the controls exhibited neuronal coexistence of glutamate and NMDAR1. The neuronal coexistence of glutamate and NMDAR1, observed in painful tendinosis but not in controls, suggests a regulatory role in intensified pain signalling.

Epidemiology of distal forearm fractures in Oslo, Norway.

UNLABELLED: The population of Oslo has the highest incidence of hip fracture reported. The present study shows that the overall incidence of distal forearm fractures in Oslo is higher than in other countries and has not changed significantly when comparing the incidence of 1998/99 with 1979. INTRODUCTION: The population of Oslo has the highest incidence of hip fracture reported. The present study reports the incidence of distal forearm fracture in Oslo and the fracture rates of immigrants. METHODS: Patients aged > or = 20 years resident in Oslo sustaining a distal forearm fracture in a one-year period in 1998/99 were identified using electronic diagnosis registers, patient protocols, and/or X-ray registers of the clinics in Oslo. Medical records were obtained and the diagnosis verified. The age- and sex-specific incidence rates were calculated and compared with those for 1979. Data on immigrant category and country of origin of the patients were obtained. RESULTS: The age-adjusted fracture rates per 10,000 for the age group > or = 50 years were 109.8 and 25.4 in 1998/99 compared with 108.3 and 23.5 in 1979 for women and men, respectively (n.s.). The relative risk of fracture in Asians was 0.72 (95% CI 0.53-1.00) compared with ethnic Norwegians. CONCLUSIONS: The overall incidence of distal forearm fractures in Oslo is higher than in other countries and has not changed significantly when comparing the incidence of 1998/99 with 1979. Furthermore, the present data suggest that Asian immigrants in Oslo have a slightly lower fracture risk than ethnic Norwegians.

Screw augmentation in displaced femoral neck fractures. Clinical and histological results using a new composite.

We wanted to assess a new technique for augmentation of parallel screws in internal fixation of displaced femoral neck fractures with a bis-GMA-based composite delivered around the screw head. Twenty-one consecutive patients admitted with displaced femoral neck fractures were operated with internal fixation with two parallel Olmed screws augmented with the composite, and followed for 24 months. The composite was introduced through the lumen of the cannulated screws and deposited in the femoral head around the threaded part of the screws. The procedure of augmenting was technically feasible and operation time was on average 33 min. Eleven patients were re-operated due to healing complications within 24 months. There were five redisplacements, four non-unions and two cases of avascular necrosis. Histological examination of four extracted femoral heads showed fragmentation of the composite into small particles with foreign-body response with giant cells and macrophages along with granulation tissue formation and low grade inflammation. The method of augmentation was technically easy, but the failure rate was high and the fragmentation of the composite with inflammatory response found on histology is noteworthy.

The use of MRI scan of knee injuries in an emergency department.

We present a retrospective study of the number of arthroscopically verified total meniscus and cruciate ligament tears seen in our Emergency department one year before, and one year after introducing magnetic resonance imaging (MRI) as a diagnostic tool. The number of total ruptures of the anterior cruciate ligament increased from 34 (1.7% of total 2003 patients) to 67 (2.9% of total 2277). The number of ruptures of the medial meniscus increased from 42 (2.1%) to 87 (3.8%). The number of ruptures of the lateral meniscus remained unchanged. In the first 12 months after introducing MRI we ordered 513 (23%) scans of the total number of 2277 patients with an acute knee condition. Thirty-nine (8%) of these were described with no pathology, 227 (44%) showed total meniscus or cruciate ligament tears. The remaining 247 (48%) were mainly degenerative or partial injuries. The cost per additional new diagnosis was approximately USD 800. The introduction of MRI has enabled us to identify a larger number of patients with meniscus and cruciate ligament injuries.

[Communication between general practitioners and hospital interns at emergency admissions]. / Kommunikasjon mellom primaerleger og turnusleger i sykehus ved akuttinnleggelser.

Communication between general practitioners and hospital interns serves as basis for the first in-hospital treatment of emergency admitted patients. The purpose of this study is to describe how this communication currently functions in Norway. The study was carried out by personal and focus group interviews with general practitioners and hospital interns, and questionnaire responses from 532 doctors. Both general practitioners (93%) and hospital interns (84%) claim that the general practitioner's information is usually valuable for the initial hospital treatment. 89% of the general practitioners and 65% of the interns (p < 0.01) responded affirmatively to general statements characterising the existing communication as good. However, 58% of the interns are of the opinion that there are many unnecessary referrals to the hospitals, and 47% respond that the general practitioners often refer a patient in order to get rid of a problem they should have been able to handle themselves. The interns single out simple problems with the referral letters, such as illegible handwriting, and left-out or unsorted information. This critical view can in part be explained by the sense of isolation, lack of autonomy and high work load that interns experience in their obligatory hospital year. We recommended that interns are invited to participate when hospital doctors and general practitioners meet.

[The first telephone call at emergency admissions--the role of nurses]. / Den første telefonsamtalen ved akuttinnleggelser--sykepleiernes rolle.

The article focuses on whom in the hospital the general practitioners first inform when referring emergency patients. The study is based on interviews with general practitioners and hospital interns, and questionnaires answered by 532 doctors, selected from hospital areas where the primary doctor on call usually is an intern. Three fourths of the respondents state that the general practitioner when referring patients usually gives the clinical information directly by phone to an intern. The remaining state that general practitioners normally inform a hospital nurse about emergency admissions. The quality of communication, and the respect developed between general practitioners and interns is perceived as being better when there is a direct communication between the general practitioner and the hospital doctor, bypassing the nurse. The interns respect the admission decisions of the general practitioners to a significantly larger degree, and claim that necessary information about the patient is easier to obtain when they routinely communicate with the general practitioners. In our opinion, the present study gives reason to recommend a direct telephone contact between the referring general practitioner and the hospital intern as part of emergency admissions.