Secondary prevention of osteoporosis following fragility fractures of the distal radius in a large health maintenance organization

Olink Proteomics for the Identification of Biomarkers for Early Diagnosis of Postmenopausal Osteoporosis

This investigation aims to employ Olink proteomics in analyzing the distinct serum proteins associated with postmenopausal osteoporosis (PMOP) and identifying prognostic markers for early detection of PMOP via molecular mechanism research on postmenopausal osteoporosis. Postmenopausal women admitted to Beijing Jishuitan Hospital were randomly selected and categorized into three groups based on their dual-energy X-ray absorptiometry (DXA) T-scores: osteoporosis group (n = 24), osteopenia group (n = 20), and normal bone mass group (n = 16). Serum samples from all participants were collected for clinical and bone metabolism marker measurements. Olink proteomics was utilized to identify differentially expressed proteins (DEPs) that are highly associated with postmenopausal osteoporosis. The functional analysis of DEPs was performed using Gene Ontology and Kyto Encyclopedia Genes and Genomes (KEGG). The biological characteristics of these proteins and their correlation with PMOP were subsequently analyzed. ROC curve analysis was performed to identify potential biomarkers with the highest diagnostic accuracy for early stage PMOP. Through Olink proteomics, we identified five DEPs highly associated with PMOP, including two upregulated and three downregulated proteins. TWEAK and CDCP1 markers exhibited the highest area under the curve (0.8188 and 0.8031, respectively). TWEAK and CDCP1 have the potential to serve as biomarkers for early prediction of postmenopausal osteoporosis.

Effectiveness of fracture liaison service in reducing the risk of secondary fragility fractures in adults aged 50 and older: a systematic review and meta-analysis

To determine and appraise the certainty of fracture liaison service (FLS) in reducing the risk of secondary fragility fractures in older adults aged ≥ 50 years and to examine the nature of the FLS and the roles of various disciplines involved in the delivery of the FLS. Medline, EMBASE, PubMed, CINAHL, SCOPUS, and The Cochrane Library were searched from January 1st, 2010, to May 31st, 2022. Two reviewers independently extracted data. The risk of bias was evaluated using the Newcastle-Ottawa Scale for cohort studies and the PEDro scale for randomized trials, while the GRADE approach established the certainty of the evidence. Thirty-seven studies were identified of which 34 (91.9%) were rated as having a low risk of bias and 22 (59.5%) were meta-analyzed. Clinically important low certainty evidence at 1 year (RR 0.26, CI 0.13 to 0.52, 6 pooled studies) and moderate certainty evidence at ≥ 2 years (RR 0.68, CI 0.55 to 0.83, 13 pooled studies) indicate that the risk of secondary fragility fracture was lower in the FLS intervention compared to the non-FLS intervention. Sensitivity analyses with no observed heterogeneity confirmed these findings. This review found clinically important moderate certainty evidence showing that the risk of secondary fragility fracture was lower in the FLS intervention at ≥ 2 years. More high-quality studies in this field could improve the certainty of the evidence. Review registration: PROSPERO-CRD42021266408.

Lactobacillus helveticus-Derived Whey-Calcium Chelate Promotes Calcium Absorption and Bone Health of Rats Fed a Low-Calcium Diet

This study investigated the characteristics of Lactobacillus helveticus-derived whey-calcium chelate (LHWCC) and its effect on the calcium absorption and bone health of rats. Fourier-transform infrared spectroscopy showed that carboxyl oxygen atoms, amino nitrogen atoms, and phosphate ions were the major binding sites with calcium in LHWCC, which has a sustained release effect in simulated in vitro digestion. LHWCC had beneficial effects on serum biochemical parameters, bone biomechanics, and the morphological indexes of the bones of calcium-deficient rats when fed at a dose of 40 mg Ca/kg BW for 7 weeks. In contrast to the inorganic calcium supplement, LHWCC significantly upregulated the gene expression of transient receptor potential cation V5 (TRPV5), TRPV6, PepT1, calcium-binding protein-D9k (Calbindin-D9k), and a calcium pump (plasma membrane Ca-ATPase, PMCA1b), leading to promotion of the calcium absorption rate, whereas Ca3(PO4)2 only upregulated the TRPV6 channel in vivo. These findings illustrate the potential of LHWCC as an organic calcium supplement.

Opportunistic hand radiographs to screen for low forearm bone mineral density: a prospective and retrospective cohort study

BACKGROUND

Low bone mineral density affects 53% of women over age 65 in the US, yet many are unaware and remain untreated. Underdiagnosis of forearm osteoporosis and related fragility fractures represent missed warning signs of more deadly, future fractures. This study aimed to determine if hand radiographs could serve as early, simple screening tools for predicting low forearm bone mineral density (BMD).

METHODS

We evaluated posterior-anterior (PA) hand radiographs (x-rays) and Dual-energy X-ray absorptiometry (DXA) scans of 43 participants. The ratio of the intramedullary cavity to total cortical diameter of the second metacarpal (second metacarpal cortical percentage (2MCP)) was used as a potential diagnostic marker. Mixed-effects linear regression was performed to determine correlation of 2MCP with BMD from various anatomic regions. Repeated measures ANOVAs were used to compare BMD across sites. An optimal 2MCP cutoff for predicting forearm osteopenia and osteoporosis was found using Receiver Operating Curves.

RESULTS

2MCP is directly correlated with BMD in the forearm. The optimal 2MCP of 48.3% had 80% sensitivity for detecting osteoporosis of the 1/3 distal forearm. An 2MCP cutoff of 50.8% had 84% sensitivity to detect osteoporosis of the most distal forearm. Both 2MCP cutoffs were more sensitive at predicting forearm osteoporosis than femoral neck T-scores.

CONCLUSIONS

These findings support the expansion of osteoporosis screening to include low-cost hand x-rays, aiming to increase diagnosis and treatment of low forearm BMD and fractures. Proposed next steps include confirming the optimal 2MCP cutoff at scale and integrating automatic 2MCP measurements into PAC systems.

Distal radius fracture: An opportunity for osteoporosis intervention

Background

Distal radius fractures have been reported as a predictor of subsequent osteoporotic fragility fractures. This retrospective study evaluated the proportion of patients with distal radius fractures at a government hospital in Hong Kong who received diagnostic evaluation or treatment for osteoporosis within 1 year.

Methods

Five hundred sixty-one postmenopausal women aged >50 years admitted to a public hospital between 2013 and 2017 for a low-energy distal radius fracture were analysed for initiation of osteoporosis medications and/or arrangement of dual-energy X-ray absorptiometry screening within 1 year of injury.

Results

Within 1 year, 8.4% of patients were prescribed osteoporosis medication and 6.1% of patients had dual-energy X-ray absorptiometry arranged. Patients with a previous fracture were more likely to receive osteoporosis medication (18.6% vs 7.5%, P = 0.012) and either intervention (screening or medication) overall (23.3% vs 10.4%, P = 0.011).

Conclusions

Few postmenopausal women who suffered a distal radius fracture received osteoporosis intervention within 1 year. Orthopaedic surgeons should be aware of the possibility of underlying osteoporosis and opportunity for intervention when managing fragility distal radius fractures.

How to Treat Distal Radius Fractures: Right Patient, Right Care, Right Time, and Right Cost

Operative intervention for distal radius fractures is typically reserved for patients with displaced fractures that may result in bothersome compromises in function, although patient-specific factors (age, activity level, and preference) are considered. Operative intervention is associated with earlier improvement in function but exposes the patient to the risk of anesthesia and surgery. Although surgery is associated with an initial increase in cost of care, the benefits of earlier return to activity may offset these increases. Efforts to contain cost through implant selection, use of ambulatory surgical centers, and judicious referrals for postoperative therapy can aid surgeons in delivering high-value care.

Rate of Bone Mineral Density Testing and Subsequent Fracture-Free Interval After Distal Forearm Fracture in the Medicare Population

PURPOSE

Distal forearm fractures are prevalent among the Medicare population. Many patients who sustain these fractures have poor bone health and are at increased risk for subsequent fractures. We sought to determine the rate of bone mineral density (BMD) testing and subsequent fragility fracture-free interval after distal forearm fractures in the Medicare population.

METHODS

We examined the 5% Medicare Standard Analytic File dataset using the PearlDiver Application from 2005 to 2014 to identify patients with distal forearm fractures based on International Classification of Diseases-Ninth Revision and Current Procedural Terminology codes. We queried these records to determine the incidence and timing of BMD testing after fracture and the number of patients who went on to hip or vertebral fractures. Survival curves were generated using Kaplan-Meier analysis with hip or vertebral fracture as the end point.

RESULTS

A total of 37,473 patients with distal forearm fractures were identified who did not have BMD testing within the 2 years before fracture. Only 9,605 of this unscreened cohort underwent testing after the fracture (26%) and only 2,684 underwent testing within 6 months (7%). The patients least likely to be tested were males (9%), those aged over 85 years (12%), and those less than 65 years (22%). Twenty percent of these patients sustained a subsequent hip or vertebral fracture (n = 7,326). Patients who underwent testing after fracture had a longer fracture-free interval compared with patients without BMD testing (819 vs 579 days). When separated by sex and controlling for comorbidities, males with BMD testing had a worsened fracture-free interval whereas females had an improved fracture-free interval.

CONCLUSIONS

Bone mineral density testing is underused nationwide in patients sustaining distal forearm fractures despite current guidelines. Orthopedic surgeons should ensure proper testing of patients because this may be an important time point for intervention.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognosis II.

Effect of Chlorella Pyrenoidosa Protein Hydrolysate-Calcium Chelate on Calcium Absorption Metabolism and Gut Microbiota Composition in Low-Calcium Diet-Fed Rats

In our current investigation, we evaluated the effect of Chlorella pyrenoidosa protein hydrolysate (CPPH) and Chlorella pyrenoidosa protein hydrolysate-calcium chelate (CPPH-Ca) on calcium absorption and gut microbiota composition, as well as their in vivo regulatory mechanism in SD rats fed low-calcium diets. Potent major compounds in CPPH were characterized by HPLC-MS/MS, and the calcium-binding mechanism was investigated through ultraviolet and infrared spectroscopy. Using high-throughput next-generation 16S rRNA gene sequencing, we analyzed the composition of gut microbiota in rats. Our study showed that HCPPH-Ca increased the levels of body weight gain, serum Ca, bone activity, bone mineral density (BMD) and bone mineral content (BMC), while decreased serum alkaline phosphatase (ALP) and inhibited the morphological changes of bone. HCPPH-Ca up-regulated the gene expressions of transient receptor potential cation V5 (TRPV5), TRPV6, calcium-binding protein-D9k (CaBP-D9k) and a calcium pump (plasma membrane Ca-ATPase, PMCA1b). It also improved the abundances of Firmicutes and Lactobacillus. Bifidobacterium and Sutterella were both positively correlated with calcium absorption. Collectively, these findings illustrate the potential of HCPPH-Ca as an effective calcium supplement.

The changing shape of hand trauma: an analysis of Hospital Episode Statistics in England

Hospital Episode Statistics (HES) include freely accessible records of all hospital episodes in England. We analysed HES from 1998-1999 to 2014-2015 for diagnoses of hand fractures, tendon injuries, nerve injuries, blood vessel injuries, traumatic amputations and nail bed injuries. Population data were used to calculate the incidence. The overall incidence of the injuries increased from 70 to 110 per 100,000. There were especially large increases in the incidence of fractures in the over 75 years age group and nail bed injuries in the 0-14 years age group. The incidence of nerve injuries also increased. We conclude from this study that HES is a useful tool. The information from HES may help plan service provision and also highlight important clinical problems that may benefit from further research.

A coordination project for improvement of osteoporosis medication use among patients who sustained an osteoporotic fracture: The Israeli experience

Objectives

The aim of this study was to examine whether coordination between healthcare providers at an inpatient rehabilitation facility and healthcare providers in a community setting improves osteoporosis medication use in the community.

Methods

In 2012, a coordination project between an inpatient geriatric rehabilitation facility located in north-central Israel and general practitioners in the community setting was initiated. In this retrospective pseudo-experimental study, we compared osteoporosis medication use among patients who were hospitalized at the facility following an osteoporotic fracture during 2011–2012, and who constituted the control group (n=120), and patients who were hospitalized at the facility during 2013–2015, and who constituted the trial group (n=129). Data were collected from the patients' records and from records of the health maintenance organization concerning medications issued to the patients by pharmacies.

Results

Differences were observed between the trial and the control group in osteoporosis medication management by healthcare providers, both at the inpatient rehabilitation facility and in the community, suggesting favorable trends. However, osteoporosis medication use in the community was slightly lower in the trial group, then in the control group (32.8% vs. 34.2%, respectively). A regression analysis indicated that the only variable predicting use of osteoporosis medications in the community was a previous diagnosis of osteoporosis in the community.

Conclusions

The study results indicate that mere coordination between the healthcare settings is insufficient in order to ensure continued care in the community, emphasizing the need for an osteoporosis coordinator.

Radiographic predictors for bone mineral loss: Cortical thickness and index of the distal femur

OBJECTIVES

Researchers continue to seek easier ways to evaluate the quality of bone and screen for osteoporosis and osteopenia. Until recently, radiographic images of various parts of the body, except the distal femur, have been reappraised in the light of dual-energy X-ray absorptiometry (DXA) findings. The incidence of osteoporotic fractures around the knee joint in the elderly continues to increase. The aim of this study was to propose two new radiographic parameters of the distal femur for the assessment of bone quality.

METHODS

Anteroposterior radiographs of the knee and bone mineral density (BMD) and T-scores from DXA scans of 361 healthy patients were prospectively analyzed. The mean cortical bone thickness (CBTavg) and the distal femoral cortex index (DFCI) were the two parameters that were proposed and measured. Intra- and interobserver reliabilities were assessed. Correlations between the BMD and T-score and these parameters were investigated and their value in the diagnosis of osteoporosis and osteopenia was evaluated.

RESULTS

The DFCI, as a ratio, had higher reliability than the CBTavg. Both showed significant correlation with BMD and T-score. When compared with DFCI, CBTavg showed better correlation and was better for predicting osteoporosis and osteopenia.

CONCLUSION

The CBTavg and DFCI are simple and reliable screening tools for the prediction of osteoporosis and osteopenia. The CBTavg is more accurate but the DFCI is easier to use in clinical practice.Cite this article: Q-F. He, H. Sun, L-Y. Shu, Y. Zhu, X-T. Xie, Y. Zhan, C-F. Luo. Radiographic predictors for bone mineral loss: Cortical thickness and index of the distal femur. Bone Joint Res 2018;7:468-475. DOI: 10.1302/2046-3758.77.BJR-2017-0332.R1.

Clinical Management of Osteoporotic Fractures

PURPOSE OF REVIEW

This review examines recent literature regarding the clinical management of fragility fractures, provides insight into new practice patterns, and discusses controversies in current management.

RECENT FINDINGS

There are declining rates of osteoporosis management following initial fragility fracture. Management of osteoporotic fractures via a multidisciplinary team reduces secondary fracture incidence and improves overall osteoporotic care. Anabolic agents (abaloparatide and teriparatide) are effective adjuvants to fracture repair, and have shown positive results in cases of re-fracture in spite of medical management (i.e., bisphosphonates). For AO 31-A1 and A2 intertrochanteric hip fractures (non-reverse obliquity), no clinical advantage of intramedullary fixation over the sliding hip screw (SHS) has been proven; SHS is more cost-effective. As fragility fracture incidence continues to rise, orthopedic surgeons must play a more central role in the care of osteoporotic patients. Initiation of pharmacologic intervention is key to preventing subsequent fragility fractures, and may play a supportive role in initial fracture healing. While the media bombards patients with complications of medical therapy (atypical femur fractures, osteonecrosis of jaw, myocardial infarction), providers need to understand and communicate the low incidence of these complications compared with consequences of not initiating medical therapy.

Frequency of Bone Health Presentations at National Hand Meetings

PURPOSE

The purpose of this study was to determine the frequency with which osteoporosis topics (screening, medical treatment, and fracture prevention) are presented at national hand surgery meetings. This was compared with the frequency of the same topics presented at the Orthopaedic Trauma Association (OTA) annual meetings.

METHODS

The annual meeting programs for the American Society for Surgery of the Hand (ASSH), the American Association for Hand Surgery (AAHS), and the OTA from the previous 10 years (2007-2016) were searched for presentations that covered bone health at each of these meetings. We categorized the presentations as either instructional or research.

RESULTS

There were 2 bone health instructional presentations at hand surgery meetings in contrast to 13 presentations at OTA meetings over the last 10 years. For the last 9 years, the OTA has featured at least 1 instructional presentation on bone health every year. We identified 11 research presentations at the hand surgery meetings compared with 16 at the OTA meetings.

CONCLUSIONS

Osteoporosis and bone health are infrequently presented instructional topics at national hand meetings compared with OTA meetings. The cause of the difference is unclear and likely multifactorial, varying each year with different program chairs and committees. The level of involvement of hand surgeons in osteoporosis management is controversial; however, incorporation of this topic may stimulate discussion and help identify solutions for this controversy.

CLINICAL RELEVANCE

It may benefit hand surgeons to place more importance on osteoporosis screening and treatment. We believe that there should be an annual instructional course on this topic at the ASSH and AAHS meetings.

Are we treating osteoporotic fractures of the hip adequately? A Middle Eastern cohort study

Fragility hip fractures treated in a center in the Middle East were retrospectively studied for adequacy of osteoporosis management. Of the 318 patients treated, over 70% did not have a structured investigation and about 30% did not receive any therapeutic supplements. Our series showed a preventable 8.8% secondary fracture rate.

PURPOSE

To study the adequacy of evaluation and treatment of osteoporosis after fragility fractures of the hip. The study also attempts to estimate the prevalence of secondary fractures after the original injury.

METHODS

This is a retrospective evaluation of the electronic database to search all the admissions for fractures of the hip in patients over 50 years at a tertiary care Trauma and Orthopaedic center in the Sultanate of Oman. The study period was defined as October 2010 to December 2015. Their case records, BMD reports, and laboratory data were analyzed. Pharmacological interventions and the documented compliance with such therapy were also recorded.

RESULTS

Over the study period, 318 fragility fractures of the hip were treated. Of these, 233 (73.3%) did not receive a DEXA scan and 94% did not have their vitamin D₃ (vit D) tested. About 29.9% percent cases did not receive any nutritional supplement or therapeutic intervention though diagnosed as fragility fracture. Twenty-eight patients (8.8%) reported for secondary fractures of the hip. Of these, 86% was initiated on supplement after their index fracture though 78.6% had not had a BMD study.

CONCLUSIONS

Less than 27% patients receive BMD test following fragility fracture of the hip and only 6% a vit D3 assay. Secondary fractures of the hip tend to occur in approximately 9% of the cases in Oman; this seems to occur equally in patients who have had as well as not had any calcium and vit D supplements after the index injury.

Low-dose diclofenac in patients with fragility fractures

Most osteoporotic patients complain of back pain one year after a fragility vertebral fracture and the frequency of chronic back pain increases with increasing age. The use of the lowest effective dose of an analgesic which is able to control symptoms seems to be a possible solution in order to limit potential side effects in multi-treated elderly patients. Non-steroidal anti-inflammatory drugs (NSAIDs) have a proven efficacy in the treatment of back pain associated with fragility vertebral fractures and diclofenac is available at low-dose subcutaneous injective formulation. This is the rational of ImPAVeDic study, acronym of Improvement of back Pain Associated with fragility Vertebral fractures with low-dose Diclofenac, an observational study that will be performed in a group of 50 elderly (≥ 65 years), male and female osteoporotic patients with symptomatic fragility vertebral fractures. The objective of the study is to evaluate the improvement of back pain in the study population treated with low-dose diclofenac and regularly monitored for 2-6 months. Visual Analogic Scale (VAS) and Numerical Rating Scale (NRS) will be used for pain monitoring. The reduction of the risk of occurrence of drug side effects can favour the optimization of elderly patients' care.

Moxibustion treatment for primary osteoporosis: A systematic review of randomized controlled trials

Primary osteoporosis (POP) has a serious impact on quality of life for middle-aged and elderly, which particularly increase the risk of fracture. We conducted the systematic review to evaluate the effects of moxibustion for POP in randomized controlled trials (RCTs).Eight databases were searched from their inception to July 30, 2016. The RCTs reporting the moxibustion as a monotherapy or in combination with conventional therapy for POP were enrolled. The outcomes might be fracture incidence, quality of life, clinical symptoms, death attributed to osteoporosis, adverse effect, bone mineral density (BMD), and biochemical indicators. Literature selection, data abstraction, quality evaluation, and data analysis were in accordance with Cochrane standards.Thirteen trials including 808 patients were included. Meta-analysis was not conducted because of the obvious clinical or statistical heterogeneity. Limited evidence suggested that moxibustion plus anti-osteoporosis medicine might be more effective in relieving the pain (visual analogue scale scores average changed 2 scores between groups, 4 trials), increasing the BMD of femoral neck (average changed 0.4 g/cm2 between groups, 3 trials), and improving the level of bone gla protein, osteoprotegerin and bone alkaline phosphatase (2 trials) compared with anti-osteoporosis medicine alone. However, the quality of previous studies was evaluated as generally poor. The safety evidence of moxibustion was still insufficient. Due to the paucity of high-quality studies, there was no definite conclusion about the efficacy and safety of moxibustion treating POP although parts of positive results were presented. Future research should pay attention to the dose-response relation and fracture incidence of moxibustion for POP.