1
|
Whiting PS, Hare K, Krueger D, Borchardt G, Parvanta-Johnson K, Bernatz J, Binkley N, Anderson PA. Periprosthetic fractures are osteoporotic fractures: missed opportunities for osteoporosis diagnosis. Osteoporos Int 2024:10.1007/s00198-024-07057-w. [PMID: 38561550 DOI: 10.1007/s00198-024-07057-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 03/04/2024] [Indexed: 04/04/2024]
Abstract
Joint replacement surgery is common in older adults, leading to increasing periprosthetic fracture (PPFx) occurrence. We reviewed all PPFx seen over a 4-year period at an academic hospital. Clinical osteoporosis could be diagnosed based on existing data in 104 (67%) at the time of PPFx. Periprosthetic fractures are generally osteoporosis-related. PURPOSE Periprosthetic fractures (PPFx) cause morbidity, mortality, and cost. This study's purpose was to describe osteoporosis-related data available at the time of PPFx. METHODS The electronic medical record (EMR) of PPFx patients seen over 4 years in a university orthopedic practice were reviewed. Demographic data and osteoporosis relevant parameters were collected. Prior DXA studies were reviewed, and L1 Hounsfield unit (HU) measurements were performed on CT scans obtained within 2 years before PPFx. Clinical osteoporosis was defined as prior diagnosis, prescribed osteoporosis treatment, T-score ≤ - 2.5, HU ≤ 100, or prior fracture. RESULTS Records of 156 PPFx patients (115 F/41 M), mean (SD) age 75.4 (11.9), were reviewed. Almost all 153/156 (98%) of these fractures were femoral. Falls caused 139 (89%); 12 (8%) were spontaneous. Mean time post-arthroplasty was 7.9 (6.3) years. Prior fragility fracture(s) occurred in 72 (46%); 14 were PPFx. Osteoporosis was previously diagnosed in 45 (29%) and medications prescribed in 41 (26%). Prior to PPFx, DXA data were available in 62, mean (SD) lowest T-score was - 1.9 (0.9) and was ≤ - 2.5 in 19. CT data were available in 46; mean (SD) L1 HU was 79.0 (29.4) and was ≤ 100 in 35. Based on existing data, clinical osteoporosis could have been diagnosed in 104 (67%) at the time of PPFx. CONCLUSION Periprosthetic fractures are osteoporosis-related. They occur in older adults, often female, and result from falls; BMD, when assessed, is low. Data available at the time of PPFx often allows osteoporosis diagnosis; this should prompt evaluation and pharmacologic treatment consideration.
Collapse
Affiliation(s)
- Paul S Whiting
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave, MFCB 6227, Madison, WI, 53705, USA.
| | - Kristyn Hare
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave, MFCB 6227, Madison, WI, 53705, USA
| | - Diane Krueger
- Osteoporosis Clinical Research Program, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Gretta Borchardt
- Osteoporosis Clinical Research Program, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Kristina Parvanta-Johnson
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave, MFCB 6227, Madison, WI, 53705, USA
| | - James Bernatz
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave, MFCB 6227, Madison, WI, 53705, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Paul A Anderson
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Ave, MFCB 6227, Madison, WI, 53705, USA
| |
Collapse
|
2
|
Lau A, Prout T, Malabanan A, Szalat A, Krueger D, Tanner SB, Rosen H, Shuhart C. Reporting of Full-Length Femur Imaging to Detect Incomplete Atypical Femur Fractures: 2023 Official Positions of the International Society for Clinical Densitometry. J Clin Densitom 2024; 27:101439. [PMID: 38000921 DOI: 10.1016/j.jocd.2023.101439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2023]
Abstract
Incomplete atypical femur fractures (iAFFs) are associated with the long-term use of anti-resorptive therapies. Although X-rays are typically used to screen for iAFFs, images from dual-energy X-ray absorptiometry (DXA) offer an alternate method for detecting iAFFs. Although a previous 2019 ISCD Official Position on this subject exists, our task force aimed to update the literature review and to propose recommendations on reporting findings related to iAFFs that may be observed on DXA images. The task force recommended that full-length femur imaging (FFI) from DXA can be used as a screening tool for iAFFs. The presence of focal lateral cortical thickening and transverse lucencies should be reported, if identified on the FFI. This task force proposed a classification system to determine the likelihood of an iAFF, based on radiographic features seen on the FFI. Lastly, the task force recommended that the clinical assessment of prodromal symptoms (pain) is not required for the assessment of FFI.
Collapse
Affiliation(s)
- Adrian Lau
- Division of Endocrinology and Metabolism, Department of Medicine, Women's College Hospital, University of Toronto, Toronto, Ontario, Canada.
| | - Tyler Prout
- Radiology Department, University of Wisconsin, Madison, WI, United States
| | - Alan Malabanan
- Bone Health Clinic, Boston Medical Center, Boston, MA, United States
| | - Auryan Szalat
- Osteoporosis Center, Internal Medicine Ward, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Diane Krueger
- School of Medicine and Public Health, Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, United States
| | - S Bobo Tanner
- Department of Medicine, Divisions of Rheumatology, Allergy & Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Harold Rosen
- Osteoporosis Prevention and Treatment Center, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Christopher Shuhart
- Bone Health and Osteoporosis Center, Swedish Medical Group, Seattle, WA, United States
| |
Collapse
|
3
|
Krueger D, Tanner SB, Szalat A, Malabanan A, Prout T, Lau A, Rosen HN, Shuhart C. DXA Reporting Updates: 2023 Official Positions of the International Society for Clinical Densitometry. J Clin Densitom 2024; 27:101437. [PMID: 38011777 DOI: 10.1016/j.jocd.2023.101437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
INTRODUCTION Professional guidance and standards assist radiologic interpreters in generating high quality reports. Initially DXA reporting Official Positions were provided by the ISCD in 2003; however, as the field has progressed, some of the current recommendations require revision and updating. This manuscript details the research approach and provides updated DXA reporting guidance. METHODS Key Questions were proposed by ISCD established protocols and approved by the Position Development Conference Steering Committee. Literature related to each question was accumulated by searching PubMed, and existing guidelines from other organizations were extracted from websites. Modifications and additions to the ISCD Official Positions were determined by an expert panel after reviewing the Task Force proposals and position papers. RESULTS Since most DXA is now performed in radiology departments, an approach was endorsed that better aligns with standard radiologic reports. To achieve this, reporting elements were divided into required minimum or optional. Collectively, required components comprise a standard diagnostic report and are considered the minimum necessary to generate an acceptable report. Additional elements were retained and categorized as optional. These optional components were considered relevant but tailored to a consultative, clinically oriented report. Although this information is beneficial, not all interpreters have access to sufficient clinical information, or may not have the clinical expertise to expand beyond a diagnostic report. Consequently, these are not required for an acceptable report. CONCLUSION These updated ISCD positions conform with the DXA field's evolution over the past 20 years. Specifically, a basic diagnostic report better aligns with radiology standards, and additional elements (which are valued by treating clinicians) remain acceptable but are optional and not required. Additionally, reporting guidance for newer elements such as fracture risk assessment are incorporated. It is our expectation that these updated Official Positions will improve compliance with required standards and generate high quality DXA reports that are valuable to the recipient clinician and contribute to best patient care.
Collapse
Affiliation(s)
- Diane Krueger
- School of Medicine and Public Health, Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA.
| | - S Bobo Tanner
- Department of Medicine, Divisions of Rheumatology, Allergy & Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Auryan Szalat
- Osteoporosis Center, Internal Medicine Ward, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Alan Malabanan
- Bone Health Clinic, Boston Medical Center, Boston, MA, USA
| | - Tyler Prout
- Radiology Department, University of Wisconsin, Madison, WI, USA
| | - Adrian Lau
- Division of Endocrinology and Metabolism, Department of Medicine, Women's College Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Harold N Rosen
- Osteoporosis Prevention and Treatment Center, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Christopher Shuhart
- Bone Health and Osteoporosis Center, Swedish Medical Group, Seattle, WA, USA
| |
Collapse
|
4
|
Rosen H, Lau A, Szalat A, Tanner SB, Krueger D, Prout T, Malabanan A, Shuhart C. Reporting Fewer Than Four Vertebrae: 2023 Official Positions of the International Society for Clinical Densitometry. J Clin Densitom 2024; 27:101436. [PMID: 37985274 DOI: 10.1016/j.jocd.2023.101436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
The precision for spine bone mineral density (BMD) worsens as vertebrae are excluded, so recommendations are needed for least significant change (LSC) for spine BMDs based on fewer than 4 vertebrae. The task force recommends re-analysis of each facility's L1-L4 in-house precision study to determine the precision in order to calculate the LSC for each combination of 2 or 3 reported vertebrae. The task force recommended not reporting spine BMDs based on single vertebral bodies for either the diagnosis or monitoring of osteoporosis. Specific data for studies assessing the precision of two non-contiguous vertebrae are mixed, but ultimately the task force recommended that spine BMD based on 2 non-contiguous vertebrae can be used for the diagnosis and monitoring of osteoporosis.
Collapse
Affiliation(s)
- Harold Rosen
- Osteoporosis Prevention and Treatment Center, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA, 02215, United States.
| | - Adrian Lau
- Division of Endocrinology and Metabolism, Department of Medicine, Women's College Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Auryan Szalat
- Osteoporosis Center, Internal Medicine Ward, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - S Bobo Tanner
- Department of Medicine, Divisions of Rheumatology, Allergy & Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Diane Krueger
- School of Medicine and Public Health, Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, United States
| | - Tyler Prout
- Radiology Department, University of Wisconsin, Madison, WI, United States
| | - Alan Malabanan
- Bone Health Clinic, Boston Medical Center, Boston, MA, United States
| | - Christopher Shuhart
- Bone Health and Osteoporosis Center, Swedish Medical Group, Seattle, WA, United States
| |
Collapse
|
5
|
Prout T, Pelzl C, Christensen EW, Binkley N, Schousboe J, Krueger D. Dual-energy X-ray Absorptiometry Trends Among US Medicare Beneficiaries: 2005-2019. J Clin Densitom 2024; 27:101456. [PMID: 38128449 DOI: 10.1016/j.jocd.2023.101456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
INTRODUCTION Bone density measured using dual-energy X-ray absorptiometry (DXA) volume, performance site and interpreters have changed in the US since 2005. The purpose of this report is to provide updated trends in DXA counts, rates, place of service and interpreter specialty for the Medicare fee-for-service population. METHODS The 100 % Medicare Physician/Supplier Procedure Summary Limited Data Set between 2005-2019 was used. DXA counts and annual rates per 10,000 Medicare beneficiaries were calculated. Annual distributions of scan performance location, provider type and interpreter specialty were described. Place of service trends (significance assigned at p < 0.05) of the mean annual share of DXA utilization were identified using linear regression. RESULTS Annual DXA use per 10,000 beneficiaries peaked in 2008 at 832, declined to 656 in 2015 then increased (p < 0.001) by 38 per year to 807 in 2019. From 2005 to 2019 DXA performance in office settings declined from 70.7 % to 47.2 %. Concurrently, outpatient hospital (OH) DXA increased from 28.6 % to 51.7 %. In 2005, 43.5 % of DXAs were interpreted by radiologists. This increased (p < 0.001) in the office and OH, averaging 0.3 and 2.0 percentage points per year respectively, reaching 73.5 % in 2019. Interpretation by most non-radiologist specialties declined (p < 0.001). CONCLUSIONS From 2005-2019, total DXA use among Medicare beneficiaries declined reaching a nadir in 2015 then returned to 2005 levels by 2019. Office DXA declined since 2005 with 51.7 % of all scans now occurring in an OH setting. The proportion of DXAs interpreted by radiologists increased over time, reaching 73.5 % in 2019.
Collapse
Affiliation(s)
- Tyler Prout
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Casey Pelzl
- Harvey L. Neiman Health Policy Institute, Reston, VA, USA
| | - Eric W Christensen
- Harvey L. Neiman Health Policy Institute, Reston, VA, USA; University of Minnesota, Health Services Management, St. Paul, MN, USA
| | - Neil Binkley
- University of Wisconsin, Osteoporosis Clinical Research Program, Madison, WI, USA
| | - John Schousboe
- Park Nicollet Clinic & Health Partners Institute, Minneapolis, MN, USA
| | - Diane Krueger
- University of Wisconsin, Osteoporosis Clinical Research Program, Madison, WI, USA.
| |
Collapse
|
6
|
Tanner SB, Krueger D, Szalat A, Prout T, Lau A, Malabanan A, Rosen H, Shuhart C. Bilateral hip DXA Reporting: 2023 Official Positions of the International Society for Clinical Densitometry. J Clin Densitom 2024; 27:101438. [PMID: 38030473 DOI: 10.1016/j.jocd.2023.101438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
INTRODUCTION This position development conference (PDC) Task Force examined the use and reporting of bilateral hip bone mineral density (BMD) measurements. This was deemed appropriate as increased availability of Dual-energy X-ray Absorptiometry (DXA) technology offering bilateral hip measurement resulted in more routine clinical use. The International Society for Clinical Densitometry Official Positions accept bilateral hip BMD measurement for clinical use but currently do not include recommendations for reporting those studies. METHODS Four key questions regarding bilateral hip reporting were proposed by the PDC Steering Committee. Relevant literature was identified using PubMed. Questions included whether bilateral hip measurements are appropriate for diagnostic classification or monitoring, as well as which bilateral hip regions of interest should be reported for diagnosis and monitoring. Additionally, the appropriate nomenclature for bilateral hip acquisition was defined. RESULTS The literature review demonstrated that bilateral hip measurement is appropriate and diagnostic classification should be based on the lowest T-score at the right or left side femoral neck or total hip; the mean T-score should not be used for diagnostic purposes. Mean bilateral total hip is preferred for BMD monitoring. The terms hip, or total hip were deemed appropriate nomenclature instead of femur or total proximal femur. CONCLUSION Bilateral hip acquisition is clinically appropriate and reporting and nomenclature standards are offered herein when a bilateral hip study is acquired. In terms of future research, the impact of discordant hips on diagnosis and monitoring was identified as a significant knowledge gap.
Collapse
Affiliation(s)
- S Bobo Tanner
- Department of Medicine, Divisions of Rheumatology, Allergy & Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Diane Krueger
- School of Medicine and Public Health, Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA.
| | - Auryan Szalat
- Osteoporosis Center, Internal Medicine Ward, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tyler Prout
- Radiology Department, University of Wisconsin, Madison, Wisconsin USA
| | - Adrian Lau
- Division of Endocrinology and Metabolism, Department of Medicine, Women's College Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Alan Malabanan
- Bone Health Clinic, Boston Medical Center, Boston, MA, USA
| | - Harold Rosen
- Osteoporosis Prevention and Treatment Center, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Christopher Shuhart
- Bone Health and Osteoporosis Center, Swedish Medical Group, Seattle, WA, USA
| |
Collapse
|
7
|
Nickel B, Krueger D, Borchardt G, Andersen L, Illgen R, Hennessy D, Hetzel S, Binkley N, Anderson PA. Intraoperative physician assessment of bone: correlation to bone mineral density. Osteoporos Int 2023; 34:1093-1099. [PMID: 37000208 DOI: 10.1007/s00198-023-06729-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 03/20/2023] [Indexed: 04/01/2023]
Abstract
This study evaluated the intraoperative physician assessment (IPA) of bone status at time of total knee arthroplasty. IPA was highly correlated with distal femur and overall bone mineral density. When IPA identifies poor bone status, formal bone health assessment is indicated. PURPOSE Intuitively, intraoperative physician assessment (IPA) would be an excellent measure of bone status gained through haptic feedback during bone preparation. However, no studies have evaluated the orthopedic surgeon's ability to do so. This study's purpose, in patients undergoing total knee arthroplasty (TKA), was to relate IPA with (1) the lowest bone mineral density (BMD) T-score at routine clinical sites; and (2) with distal femur BMD. METHODS Seventy patients undergoing TKA by 3 surgeons received pre-operative DXA. Intraoperatively, bone quality was assessed on a 5-point scale (1 excellent to 5 poor) based on tactile feedback to preparation. Demographic data, DXA results, and IPA score between surgeons were compared by factorial ANOVA. Lowest T-score and distal femur BMD were associated with IPA using Spearman's correlation. RESULTS The mean (SD) age and BMI were 65.8 (7.6) years and 31.4 (5.1) kg/m2, respectively. Patient demographic data, BMD, and IPA (mean [SD] = 2.74 [1.2]) did not differ between surgeons. IPA correlated with the lowest T-score (R = 0.511) and distal femur BMD (R = 0.603-0.661). Based on the lowest T-score, no osteoporotic patients had an IPA above average, and none with normal BMD was classified as having poor bone. CONCLUSIONS IPA is highly correlated with local (distal femur) and overall BMD. This study supports the International Society for Clinical Densitometry position that surgeon concern regarding bone quality should lead to bone health assessment. As IPA is comparable between surgeons, it is logical this can be widely applied by experienced orthopedic surgeons. Future studies evaluating IPA at other anatomic sites are indicated.
Collapse
Affiliation(s)
- Brian Nickel
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 4602 Eastpark Blvd, MCAC06, Madison, WI, 53718, USA.
| | - Diane Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Gretta Borchardt
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Lucas Andersen
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Richard Illgen
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 4602 Eastpark Blvd, MCAC06, Madison, WI, 53718, USA
| | - David Hennessy
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 4602 Eastpark Blvd, MCAC06, Madison, WI, 53718, USA
| | - Scott Hetzel
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 4602 Eastpark Blvd, MCAC06, Madison, WI, 53718, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Paul A Anderson
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, 4602 Eastpark Blvd, MCAC06, Madison, WI, 53718, USA
| |
Collapse
|
8
|
Krueger D, Borchardt G, Andersen L, Sanfilippo J, Kuchnia A, Binkley N. Clinical Attitudes About COVID Precautions in a DXA Research Setting. J Clin Densitom 2023; 26:23-26. [PMID: 36344384 DOI: 10.1016/j.jocd.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Diane Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA.
| | - Gretta Borchardt
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| | - Lucas Andersen
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| | | | - Adam Kuchnia
- Department of Nutritional Sciences, University of Wisconsin-Madison, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| |
Collapse
|
9
|
Billington EO, Binkley N, Krueger D, Kline GA, Leslie WD. Automatic Soft Tissue Detection Failure in DXA: The 4% Fat Error. J Clin Densitom 2023; 26:45-50. [PMID: 36400671 DOI: 10.1016/j.jocd.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
Affiliation(s)
- Emma O Billington
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
| | - Neil Binkley
- Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Diane Krueger
- Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Gregory A Kline
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - William D Leslie
- Department of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| |
Collapse
|
10
|
Chang E, Binkley N, Krueger D, Illgen R, Nickel B, Hennessy D, Bernatz J, Winzenried A, Anderson PA. Proposed bone health screening protocol to identify total knee arthroplasty patients for preoperative DXA. Osteoporos Int 2023; 34:171-177. [PMID: 36326846 DOI: 10.1007/s00198-022-06585-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022]
Abstract
UNLABELLED This study evaluates a novel, simple bone health screening protocol composed of patient sex, age, fracture history, and FRAX risk to identify total knee arthroplasty patients for preoperative DXA. Findings supported effectiveness, with sensitivity of 1.00 (CI 0.92-1.00) and specificity of 0.54 (CI 0.41-0.68) when evaluating for clinical osteoporosis. PURPOSE Bone health optimization is a process where osteoporotic patients are identified, evaluated via modalities such as dual-energy X-ray absorptiometry (DXA), and treated when indicated. There are currently no established guidelines to determine who needs presurgical DXA. This study evaluates the effectiveness of a simple screening protocol to identify TKA patients for preoperative DXA. METHODS This prospective cohort study began on September 1, 2019, and included 100 elective TKA patients. Inclusion criteria were ≥ 50 years and primary TKA. All patients obtained routine clinical DXA. The screening protocol defining who should obtain DXA included meeting any of the following: female ≥ 65, male ≥ 70, fracture history after age 50, or FRAX major osteoporotic fracture risk without bone mineral density (BMD) adjustments ≥ 8.4%. Osteoporosis was defined by the World Health Organization (WHO) criteria (T-score ≤ - 2.5) or clinically (T-score ≤ - 2.5, elevated BMD-adjusted FRAX risk, or prior hip/spine fracture). Sensitivity and specificity were calculated. RESULTS The study included 68 females and 32 males, mean age 67.2 ± 7.7. T-score osteoporosis was observed in 16 patients while 43 had clinical osteoporosis. Screening criteria recommending DXA was met by 69 patients. Screening sensitivity was 1.00 (CI 0.79-1.00) and specificity was 0.37 (CI 0.27-0.48) for identifying patients with T-score osteoporosis. Similar sensitivity of 1.00 (CI 0.92-1.00) and specificity of 0.54 (CI 0.41-0.68) were found for clinical osteoporosis. CONCLUSIONS A simple screening protocol identifies TKA patients with T-score and clinical osteoporosis for preoperative DXA with high sensitivity in this prospective cohort study.
Collapse
Affiliation(s)
- Elliot Chang
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA.
| | - Neil Binkley
- School of Medicine and Public Health Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Ave, Suite 100, Madison, WI, 53705, USA
| | - Diane Krueger
- School of Medicine and Public Health Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Ave, Suite 100, Madison, WI, 53705, USA
| | - Richard Illgen
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA
| | - Brian Nickel
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA
| | - David Hennessy
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA
| | - James Bernatz
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA
| | - Alec Winzenried
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA
| | - Paul A Anderson
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6Th Floor, Madison, WI, 53705-2281, USA.
| |
Collapse
|
11
|
Binkley N, Krueger D, Leslie WD. Accurate Weight and Height Measurement is Essential for Correct Trabecular Bone Score Determination. J Clin Densitom 2023; 26:52-54. [PMID: 36470791 DOI: 10.1016/j.jocd.2022.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Affiliation(s)
- Neil Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, Madison WI, United States
| | - Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison WI, United States
| | | |
Collapse
|
12
|
Andersen L, Krueger D, Bernatz J, Binkley N, Anderson PA, Grogan B. Humeral BMD can be Measured With DXA and Is Lower in the Surgical Arm After Total Shoulder Arthroplasty. J Clin Densitom 2022; 25:448-455. [PMID: 36114106 DOI: 10.1016/j.jocd.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/14/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND As arthroplasty leads to bone loss, we hypothesized that humeral bone mineral density (BMD) is lower after total shoulder arthroplasty (TSA) in the operative versus non-operative arm. However, there is no clinical approach to measure humeral BMD with dual-energy x-ray absorptiometry (DXA). The purposes of this pilot study were to develop DXA methodology to measure humerus BMD, propose humerus regions of interest (ROIs), compare TSA BMD to the non-operative arm, correlate humeral BMD with standard sites, and evaluate measurement reproducibility. METHODOLOGY Thirty-eight adults 1-5 years post-TSA had standard clinical DXA scans plus full humerus scans using the atypical femur fracture feature; precision was assessed in a subset (n = 32). Six custom ROIs were used to measure BMD throughout the humerus. Radius and humeral BMD were compared between arms by paired t-test and correlated ipsilaterally using Pearson's Correlation. Custom ROI BMD precision was assessed using the International Society for Clinical Densitometry (ISCD) advanced precision calculator. RESULTS Study included 38 subjects (24M/14F), with mean (SD) age and time post-surgery of 69.6 (7.7) years and 2.5 (1.3) years respectively. BMD was lower (p < 0.01) at all custom humerus sites (3.8% to 8.2%) on the surgical side but not different at radius sites. Humeral BMD correlated positively with ipsilateral ultra-distal and 1/3 radius (r = 0.54 to 0.86; p < 0.05). Custom BMD precision (%CV) ranged from 6.0-16.0%. CONCLUSIONS Humerus BMD can be measured using DXA and is lower in the TSA arm. Radius BMD correlated with humeral BMD but was not lower in the surgical arm. BMD precision was worse than usual clinical sites; use of software optimized for the femur is a notable limitation and likely contributes to suboptimal precision. Further study to assess the clinical utility of humeral BMD is needed. Automation and optimization of these measurements should improve precision.
Collapse
Affiliation(s)
- Lucas Andersen
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison.
| | - Diane Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison
| | - James Bernatz
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison
| | - Neil Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison
| | - Paul A Anderson
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison
| | - Brian Grogan
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison
| |
Collapse
|
13
|
Shevroja E, White R, Lamy O, Krueger D, Hans D, Binkley N. Bone Texture Assessment on Lateral VFAs Using the Texture Research Investigational Platform (TRIP) and its Fracture Discrimination Ability. J Clin Densitom 2022; 25:599-605. [PMID: 35430132 DOI: 10.1016/j.jocd.2022.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 02/04/2022] [Accepted: 02/23/2022] [Indexed: 11/30/2022]
Abstract
Texture Research Imaging Platform applies trabecular bone score (TBS) measurement principles to images acquired with multiple modalities to assess bone texture at various skeletal sites. This study aimed to assess the bone texture score in dual-energy X-ray absorptiometry-acquired lateral vertebral fracture assessment (VFA) images (BTSVFA), evaluate its reproducibility, and vertebral fracture discrimination ability. Subjects included 178 VF cases and 178 non-VF controls, 136 women and 42 men in each group, age 55-92 years, from two research centers. Cases and controls were matched for age (±5 years), body mass index (±5 kg/m2) and TBS. All participants underwent dual-energy X-ray absorptiometry TBS assessment from standard posterior-anterior lumbar spine scans and BTSVFA assessment. VF presence was determined using VFA images applying the Genant's method. BTSVFA was lower among fractured women compared to non-fractured (0.626 ± 0.109 vs 0.675 ± 0.099, p < 0.01), but not among men. In a binary logistic regression adjusted for study center and sex, for each SD lower BTSVFA, there was a 40% increase (OR 1.40, 95% CI (1.13-1.74)) in the risk of having a prevalent VF; area under the curve (95% CI) 0.616 (0.557-0.675). Inter-assessor and inter-centers ICCs for BTSVFA measurements were very good; 0.96 (0.64-0.99) and 0.98 (0.95-0.99), respectively. The BTSVFA precision (coefficient of variation) was 2.42%. This feasibility study demonstrates the potential to assess trabecular bone texture in lateral VFA images with good reproducibility. BTSVFA can discriminate between fractured and non-fractured women independent of their age, body mass index and TBS. In conclusion, BTSVFA, a potential trabecular texture assessment that excludes the posterior elements, may have value in fracture prediction or as a novel approach to be further investigated in spine surgery planning.
Collapse
Affiliation(s)
- Enisa Shevroja
- Center of Bone Diseases, Bone and Joint Department, Lausanne University Hospital, Lausanne, Switzerland
| | - Ryleigh White
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - Olivier Lamy
- Center of Bone Diseases, Bone and Joint Department, Lausanne University Hospital, Lausanne, Switzerland
| | - Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - Didier Hans
- Center of Bone Diseases, Bone and Joint Department, Lausanne University Hospital, Lausanne, Switzerland; Research and Development Department, Medimaps, Bordeaux, France
| | - Neil Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| |
Collapse
|
14
|
Jonsdottir GM, Kvaran RB, Skarphedinsdottir SJ, Karason S, Krueger D, Coursin DB, Binkley N, Hoofnagle AN, Hogan K, Sigurdsson GH, Sigurdsson MI. Changes in vitamin D metabolites at the time of critical illness and six months later ‐ a prospective observational study. Acta Anaesthesiol Scand 2022; 66:1202-1210. [DOI: 10.1111/aas.14137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/09/2022] [Accepted: 07/30/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Gudrun Maria Jonsdottir
- Department of Anesthesia and Intensive Care Medicine Operational Services, Landspitali ‐ The National University Hospital of Iceland, Reykjavik Iceland
- Department of Anesthesiology and Critical Care Yale New Haven Hospital New Haven CT USA
| | - Runar Bragi Kvaran
- Department of Anesthesia and Intensive Care Medicine Operational Services, Landspitali ‐ The National University Hospital of Iceland, Reykjavik Iceland
- Department of Anesthesia and Intensive Care Sahlgrenska University Hospital Gothenburg Sweden
| | - Sigurbjorg Johanna Skarphedinsdottir
- Department of Anesthesia and Intensive Care Medicine Operational Services, Landspitali ‐ The National University Hospital of Iceland, Reykjavik Iceland
| | - Sigurbergur Karason
- Department of Anesthesia and Intensive Care Medicine Operational Services, Landspitali ‐ The National University Hospital of Iceland, Reykjavik Iceland
- Faculty of Medicine University of Iceland Reykjavik Iceland
| | - Diane Krueger
- Department of Medicine University of Wisconsin School of Medicine and Public Health Madison WI USA
| | - Douglas B. Coursin
- Department of Anesthesiology University of Minnesota Medical School Minneapolis MN USA
| | - Neil Binkley
- Department of Medicine University of Wisconsin School of Medicine and Public Health Madison WI USA
| | | | - Kirk Hogan
- Department of Anesthesiology University of Wisconsin School of Medicine and Public Health Madison WI USA
| | - Gisli Heimir Sigurdsson
- Department of Anesthesia and Intensive Care Medicine Operational Services, Landspitali ‐ The National University Hospital of Iceland, Reykjavik Iceland
- Faculty of Medicine University of Iceland Reykjavik Iceland
| | - Martin Ingi Sigurdsson
- Department of Anesthesia and Intensive Care Medicine Operational Services, Landspitali ‐ The National University Hospital of Iceland, Reykjavik Iceland
- Faculty of Medicine University of Iceland Reykjavik Iceland
| |
Collapse
|
15
|
Chang E, Nickel B, Binkley N, Bernatz J, Krueger D, Winzenried A, Anderson PA. A Novel Osteoporosis Screening Protocol to Identify Orthopedic Surgery Patients for Preoperative Bone Health Optimization. Geriatr Orthop Surg Rehabil 2022; 13:21514593221116413. [PMID: 35967749 PMCID: PMC9364193 DOI: 10.1177/21514593221116413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/11/2022] [Indexed: 11/15/2022] Open
Abstract
Introduction Osteoporosis is highly prevalent in elective orthopedic surgery. While preoperative bone health optimization decreases osteoporosis-related complications, there is an unmet need to establish who may benefit from preoperative dual-energy x-ray absorptiometry (DXA). This study assesses a novel, simple screening protocol to identify orthopedic surgical patients for preoperative DXA. Materials/Methods This retrospective cohort study included 628 patients undergoing total knee, hip, or shoulder arthroplasty or thoracolumbar spine fusion. Inclusion criteria were ≥40 years undergoing primary elective surgery. Screening criteria defining who should obtain DXA due to high osteoporosis risk included: female ≥65, male ≥70, fracture history when ≥50 years, or FRAX major osteoporotic fracture risk (without bone mineral density [BMD]-adjustments) ≥8.4%. Osteoporosis was defined by World Health Organization criteria [T-score ≤ -2.5], clinical National Osteoporosis Foundation (NOF) criteria [T-score ≤ -2.5, elevated BMD-adjusted FRAX risk, or prior hip/spine fracture], and modified clinical criteria [NOF criteria simplified to include any non-traumatic prior fracture and FRAX without BMD]. Results The study included 100 TKAs, 100 THAs, 251 TSAs, and 177 spine fusions, average age 65.6 ± 9.8. DXA was available for 209 patients. Screening criteria recommending DXA was met by 362 patients. For those with DXA, screening sensitivity was .96 (CI: .78 to .99) and specificity was .19 (CI: .14 to .25) for identifying T-score osteoporosis. Similar sensitivity of .99 (CI: .91 to .99) and specificity of .61 (CI: .56 to .66) were found for modified clinical osteoporosis. For modified clinical osteoporosis, 192 patients with osteoporosis met criteria (true pos.), 1 patient with osteoporosis did not meet criteria (false neg.), 170 patients without osteoporosis met criteria (false pos.), and 265 patients without osteoporosis did not meet criteria (true neg.). Discussion/Conclusion A simple screening protocol identifies orthopedic surgical candidates at risk of T-score or clinical osteoporosis for preoperative DXA with high sensitivity.
Collapse
Affiliation(s)
- Elliot Chang
- Department of Orthopedics Surgery and Rehabilitation, University of Wisconsin UWMF Centennial Bldg, Madison, WI, USA
| | - Brian Nickel
- Department of Orthopedics Surgery and Rehabilitation, University of Wisconsin UWMF Centennial Bldg, Madison, WI, USA
| | - Neil Binkley
- University of Wisconsin School of Medicine and Public Health Osteoporosis Clinical Research Program, Madison, WI, USA
| | - James Bernatz
- Department of Orthopedics Surgery and Rehabilitation, University of Wisconsin UWMF Centennial Bldg, Madison, WI, USA
| | - Diane Krueger
- University of Wisconsin School of Medicine and Public Health Osteoporosis Clinical Research Program, Madison, WI, USA
| | - Alec Winzenried
- Department of Orthopedics Surgery and Rehabilitation, University of Wisconsin UWMF Centennial Bldg, Madison, WI, USA
| | - Paul A Anderson
- Department of Orthopedics Surgery and Rehabilitation, University of Wisconsin UWMF Centennial Bldg, Madison, WI, USA
| |
Collapse
|
16
|
Hayden AC, Binkley N, Krueger D, Bernatz JT, Kadri A, Anderson PA. Effect of degeneration on bone mineral density, trabecular bone score and CT Hounsfield unit measurements in a spine surgery patient population. Osteoporos Int 2022; 33:1775-1782. [PMID: 35554615 DOI: 10.1007/s00198-022-06407-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 04/15/2022] [Indexed: 10/18/2022]
Abstract
UNLABELLED This study investigated the impact of spinal degeneration on bone mineral density (BMD), trabecular bone score (TBS), and CT Hounsfield units in an at-risk population. We found that BMD was increased by degeneration, whereas TBS and HU were unaffected. These findings support that TBS is not adversely affected by spinal degeneration. INTRODUCTION This study evaluated the impact of spinal degeneration on BMD and TBS measured by dual-energy x-ray absorptiometry (DXA) and on CT HU in a spine surgery patient population. METHODS A retrospective study of 63 patients referred for consideration of spine surgery or with history of spine surgery was performed. Patients were included if a DXA scan and a CT containing the lumbar spine were obtained within 18 months of each other. DXA data were collected and analyzed by vertebral level. Individual vertebrae were assessed for degenerative changes by qualitative evaluation of the anterior and posterior elements using CT. Degeneration scores were compared to BMD T-scores, TBS and CT HU at individual vertebral levels L1-4, and after applying International Society for Clinical Densitometry (ISCD) criteria for excluding vertebrae from diagnostic consideration. RESULTS Mean patient age and BMI were 67.2 years and 27.8 kg/m2, respectively; 79.4% were female. Mean (SD) lowest T-scores of the hip, spine, and lowest overall T-score were - 1.3 (1.4), - 1.7 (0.9), and - 1.9 (1.0), respectively. Osteoporosis was present by T-score in 38% and osteopenia in 52%; 10% had a history of osteoporotic fracture. The mean degeneration score of individual vertebrae was 4.1 on a 0-6 scale. T-score correlated moderately with degeneration score (Spearman's rho 0.484, p < 0.001), whereas TBS and HU were unrelated. ISCD excluded vertebrae had a higher degeneration score than included vertebrae (p = < 0.001). CONCLUSIONS In a spine surgery population, TBS and CT HU values are unrelated to degeneration score and thus appear unaffected by lumbar vertebral degenerative changes. Additionally, these data support the ISCD criteria for vertebral exclusion.
Collapse
Affiliation(s)
- A C Hayden
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - N Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - D Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - J T Bernatz
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - A Kadri
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - P A Anderson
- Department of Orthopedics Surgery and Rehabilitation, University of Wisconsin, UWMF Centennial Bldg, 1685 Highland Ave, 6th floor, Madison, WI, 53705-2281, USA.
| |
Collapse
|
17
|
Borchardt G, Nickel B, Andersen L, Hetzel S, Illgen R, Hennessy D, Anderson PA, Binkley N, Krueger D. Femur and Tibia BMD Measurement in Elective Total Knee Arthroplasty Candidates. J Clin Densitom 2022; 25:319-327. [PMID: 35210129 DOI: 10.1016/j.jocd.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/22/2021] [Accepted: 01/04/2022] [Indexed: 12/01/2022]
Abstract
Distal femur BMD declines ∼20% following total knee arthroplasty (TKA) potentially leading to adverse outcomes. BMD knowledge before and following TKA might allow interventions to optimize outcomes. We hypothesized that distal femur and proximal tibial BMD could be reproducibly measured with existing DXA technology. Elective TKA candidates were enrolled and standard clinical DXA plus bilateral PA and lateral knee scans acquired. Manual regions of interest (ROIs) were placed at distal femur and proximal tibia sites based on required TKA machining and periprosthetic fracture location. Intra- and inter-rater BMD reliability was assessed by intra-class correlation (ICC). Custom and standard proximal femur BMD were correlated by linear regression and paired t test evaluated BMD differences between planned surgical and contralateral side. One hundred subjects (68F/32M), mean (SD) age and BMI of 67.2 (7.7) yr and 30.8 (4.8) kg/m2 were enrolled. Lowest clinical BMD T-score was < -1.0 in 65% and ≤ -2.5 in 16%; 34 had prior fracture. BMD reproducibility at all custom ROIs was excellent; ICC > 0.96. Mean BMD at custom ROIs ranged from 0.903 to 1.346 g/cm2 in the PA projection and 0.891 to 1.429 g/cm2 in the lateral. Lower BMD values were observed at the proximal tibia, while the higher measurements were at the femur condyle. Custom knee ROI BMD was highly correlated (p < 0.0001) with total and femur neck with better correlation at ROIs adjacent to the joint (R2 = 0.62-0.67, 0.49-0.55 respectively). In those without prior TKA (n = 76), mean BMD was lower (2.8%-6.6%; p < 0.05) in the planned surgical leg at all custom ROIs except the PA tibial regions. Individual variability was present with 82% having a custom ROI with lower BMD (up to 53%) in the planned operative leg. Distal femur and proximal tibial BMD can be measured using custom ROIs with good reproducibility. Suboptimal bone status is common in TKA candidates and distal femur/proximal tibia BMD is often lower on the planned operative side. Routine distal femur/proximal tibial BMD measurement might assist pre-operative interventions, surgical decision-making, subsequent care and outcomes. Studies to evaluate these possibilities are indicated.
Collapse
Affiliation(s)
- Gretta Borchardt
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA.
| | - Brian Nickel
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - Lucas Andersen
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Scott Hetzel
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - Richard Illgen
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - David Hennessy
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - Paul A Anderson
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Diane Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| |
Collapse
|
18
|
Taani MH, Binkley N, Gangnon R, Krueger D, Buehring B. Effect of semi-recumbent vibration exercise on muscle outcomes in older adults: a pilot randomized controlled clinical trial. BMC Geriatr 2022; 22:335. [PMID: 35436920 PMCID: PMC9017010 DOI: 10.1186/s12877-022-03052-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 04/05/2022] [Indexed: 11/28/2022] Open
Abstract
Background Many older adults with physical limitations living in residential care apartments are unable to exercise in a standing position and are at risk for declining in muscle function leading to falls and injury. Novel approaches to achieve exercise benefits are needed. The purpose of this study was to test the effect of semi-recumbent vibration exercise on muscle outcomes in older adults living in residential care apartment complexes (RCACs). Methods A randomized, crossover design was used to examine the effect of semi-recumbent vibration exercise on muscle function and mass among 32 RCAC residents (mean age 87.5 years) with physical limitations. Participants received a randomized sequence of two study conditions: sham or vibration for 8 weeks each separated by a 4-week washout. Before and after the 8 weeks of vibration treatment and sham treatment, muscle mechanography was used to assess muscle function including jump power, weight-corrected jump power, and jump height. Short physical performance battery (SPPB) and handgrip strength were also used to measure muscle function. Bioelectrical impedance spectroscopy was used to estimate skeletal muscle mass. The effect of the vibration treatment on muscle outcomes was analyzed through mixed effects linear regression models. Results Vibration exercise leads to better jump height (p < .05) compared to sham exercise but also poorer chair rise performance (p = 0.012). Other muscle functions tests and muscle mass parameters showed non-significant changes. Conclusion This small pilot study showed no conclusive results on the effect of semi-recumbent vibration exercise on muscle function and mass in older adults living in RCAC. However, the promising signals of improved jump performance could be used to power larger studies of longer duration with various vibration doses to determine the benefit of vibration exercise in this physically impaired, high-risk population with few exercise capabilities. Trial registration The study is registered at clinicaltrials.gov (NCT02533063; date of first registration 26/08/2015).
Collapse
Affiliation(s)
- Murad H Taani
- University of Wisocnsin Milwaukee, Wiscosin State, Milwaukee, USA.
| | - Neil Binkley
- University of Wisocnsin Madison, Wiscosin State, Madison, USA
| | - Ronald Gangnon
- University of Wisocnsin Madison, Wiscosin State, Madison, USA
| | - Diane Krueger
- University of Wisocnsin Madison, Wiscosin State, Madison, USA
| | - Bjoern Buehring
- University of Wisocnsin Madison, Wiscosin State, Madison, USA
| |
Collapse
|
19
|
Lewiecki EM, Anderson PA, Bilezikian JP, Binkley N, Cheung AM, Imel EA, Krueger D, McClung MR, Miller PD, Rothman MS. Proceedings of the 2021 Santa Fe Bone Symposium: Advances in the Management of Osteoporosis and Metabolic Bone Diseases. J Clin Densitom 2022; 25:3-19. [PMID: 34785102 DOI: 10.1016/j.jocd.2021.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 10/05/2021] [Indexed: 12/29/2022]
Abstract
The 2021 Virtual Santa Fe Bone Symposium was held August 5-8, with over 300 registered attendees from throughout the USA, and at least 18 other countries. This annual meeting focuses on applying advances in basic science and clinical research to the care of patients with osteoporosis and those with inherited and acquired disorders of bone metabolism. Participants represented a broad range of medical disciplines with an interest in skeletal diseases. These included physicians of many specialties and practice settings, fellows, advanced practice providers, fracture liaison service (FLS) coordinators, clinical researchers, and bone density technologists. There were lectures, case presentations, and panel discussions, all followed by interactive discussions. Breakout sessions included an FLS workshop, Bone Health TeleECHO workshop, special interest groups, meet-and-greet the faculty, and satellite symposia. The agenda covered topics of interest such as strategies for the use of osteoanabolic therapy, prevention of periprosthetic fractures, management of atypical femur fractures, what we know and don't know about vitamin D, advances in the use of dual-energy X-ray absorptiometry in the assessment of skeletal health, controversies and conundrums in osteoporosis care, skeletal health in transgender patients, management of patients with hypophosphatasia and hypophosphatemia, and treat-to-target approaches for managing patients with osteoporosis. The Proceedings of the 2021 Virtual Santa Fe Bone Symposium consists of highlights of each presentation with current strategies for optimizing the care of patients with skeletal disorders.
Collapse
Affiliation(s)
- E Michael Lewiecki
- New Mexico Clinical Research & Osteoporosis Center, Albuquerque, NM, USA.
| | - Paul A Anderson
- University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - John P Bilezikian
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
| | - Neil Binkley
- University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | | | - Erik A Imel
- Indiana University School of Medicine, Indianapolis, IN, USA
| | - Diane Krueger
- University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Michael R McClung
- Oregon Osteoporosis Center, Portland, OR, USA, and Mary MacKillop Center for Health Research, Australian Catholic University, Melbourne, Australia
| | | | - Micol S Rothman
- University of Colorado Health School of Medicine, Aurora, CO, USA
| |
Collapse
|
20
|
Hans D, Leslie WD, Krueger D, Binkley N. In Memoriam: Professor Vladyslav Povoroznyuk. J Clin Densitom 2021. [PMID: 34598903 DOI: 10.1016/j.jocd.2021.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
21
|
Rush B, Binkley N, Krueger D, Yamada Y, Kuchnia AJ. Combination of DXA and BIS Predicts Jump Power Better Than Traditional Measures of Sarcopenia. JBMR Plus 2021; 5:e10527. [PMID: 34368612 PMCID: PMC8328796 DOI: 10.1002/jbm4.10527] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 12/20/2022] Open
Abstract
Traditional diagnostic criteria for sarcopenia use dual-energy X-ray absorptiometry (DXA)-measured appendicular lean mass (ALM), normalized to height (ALM/ht2) or body mass index (ALM/BMI) to define low muscle mass. However, muscle function declines with aging before the loss of muscle mass is detected by ALM. This is likely due, in part, to qualitative muscle changes such as extracellular and intracellular fluid compartment shifts uncaptured by DXA. We propose combining bioimpedance spectroscopy (BIS), which estimates extracellular and intracellular compartment volume, with DXA to more accurately predict muscle function. This combination may help incorporate muscle quality, thereby improving sarcopenia diagnosis. We cross-sectionally analyzed data from 248 Black and White participants aged 25 to 75 years from the Midlife in the United States Refresher Cohort. We proposed two novel muscle measures: ALM corrected by the BIS-derived whole-body extracellular to intracellular fluid ratio (E/I) and leg lean mass (LLM) corrected by leg-specific E/I, creating (ALM/(E/I)W) and (LLM/(E/I)L), respectively. We compared the associations of traditional muscle measures, ALM/(E/I)W, and LLM/(E/I)L, with grip strength and lower limb power using jumping mechanography. LLM/(E/I)L explained jump power best at R 2 = 0.803 compared with ALM/(E/I)W (p < 0.0001) and all other measures. ALM/(E/I)W explained jump power second best (R 2 = 0.759) but not significantly better than traditional muscle measures. No muscle measure performed better than covariates when predicting handgrip strength. LLM/(E/I)L outperformed ALM/ht2 and ALM/BMI when predicting jump power. We propose LLM/(E/I)L is a powerful and clinically relevant method that accounts for muscle quality. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
Collapse
Affiliation(s)
- Benjamin Rush
- Department of Nutritional Sciences University of Wisconsin-Madison Madison WI USA
| | - Neil Binkley
- University of Wisconsin Osteoporosis Clinical Research Program Madison WI USA
| | - Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program Madison WI USA
| | - Yosuke Yamada
- Department of Physical Activity, National Institute of Health and Nutrition National Institutes of Biomedical Innovation, Health and Nutrition Tokyo Japan
| | - Adam J Kuchnia
- Department of Nutritional Sciences University of Wisconsin-Madison Madison WI USA
| |
Collapse
|
22
|
McCarney B, Binkley N, Krueger D. A Newly Recognized DXA Confounder: The Potassium-Binding Medication Sodium Zirconium Cyclosilicate. J Clin Densitom 2021; 24:281-286. [PMID: 32631738 DOI: 10.1016/j.jocd.2020.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/14/2020] [Accepted: 05/14/2020] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Radio-dense artifacts, including contrast material, alter dual-energy X-ray absorptiometry (DXA) results. An apparent diffuse artifact was identified during spine DXA acquisition in a patient without recent radiographic procedures. The patient reported taking sodium zirconium cyclosilicate (SZC; Lokelma®) 10 g 1 h before scanning. SZC is a potassium-binding agent recently marketed to treat hyperkalemia. Given the chemical composition, we hypothesized that SZC may alter DXA results. This study evaluated if SZC affects DXA results using an encapsulated spine and a total body phantom. METHODOLOGY An encapsulated spine and total body phantom were scanned using a Lunar iDXA. Each phantom was scanned 5 times serially without repositioning in 5 configurations: (1) Bare, (2) 45 mL tap water, (3) 90 mL water, (4) 10 g SZC in 45 mL of water, and (5) 30 g SZC in 90 mL of water. Water and SZC was contained in plastic quart bags, folded, and placed over L2-3 on the spine phantom and flat over the pelvis/torso of the total body phantom. RESULTS Tap water did not change spine phantom measurements, but did increase (p < 0.05) total body phantom lean mass 46 g and 89 g with 45 mL and 90 mL, respectively. SZC 10 g or 30 g increased (p < 0.001) L2 and L3 bone mineral density (BMD) 18%-110%, mean 0.295 and 0.924 g/cm2, respectively, while L1 and L4 BMD was statistically, but not clinically, altered by <0.010 g/cm2. A dose-dependent change (p < 0.001) in total body phantom trunk measurements was demonstrated. The 10 g dose increased lean mass 16.8% and BMC 1%; fat mass was reduced 16.6%, while 30 g increased lean 41.9%, BMC 3.2%, and decreased fat 42.9%. CONCLUSION SZC confounds BMD and body composition phantom measurements. It is likely that SZC alters DXA results in humans. DXA technologists and interpreters should be aware of this confounder.
Collapse
Affiliation(s)
| | - Neil Binkley
- University of Wisconsin-Madison, Madison, WI, USA
| | | |
Collapse
|
23
|
Hong N, Siglinsky E, Krueger D, White R, Kim CO, Kim HC, Yeom Y, Binkley N, Rhee Y, Buehring B. Defining an international cut-off of two-legged countermovement jump power for sarcopenia and dysmobility syndrome. Osteoporos Int 2021; 32:483-493. [PMID: 32894301 PMCID: PMC7929946 DOI: 10.1007/s00198-020-05591-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 07/10/2020] [Indexed: 12/22/2022]
Abstract
UNLABELLED We aimed to establish jump power cut-offs for the composite outcome of either sarcopenia (EWGSOP2) or dysmobility syndrome using Asian and Caucasian cohorts. Estimated cut-offs were sex specific (women: < 19.0 W/kg; men: < 23.8 W/kg) but not ethnicity specific. Jump power has potential to be used in definitions of poor musculoskeletal health. PURPOSE Weight-corrected jump power measured during a countermovement jump may be a useful tool to identify individuals with poor musculoskeletal health, but no cut-off values exist. We aimed to establish jump power cut-offs for detecting individuals with either sarcopenia or dysmobility syndrome. METHODS Age- and sex-matched community-dwelling older adults from two cohorts (University of Wisconsin-Madison [UW], Korean Urban Rural Elderly cohort [KURE], 1:2) were analyzed. Jump power cut-offs for the composite outcome of either sarcopenia defined by EWGSOP2 or dysmobility syndrome were determined. RESULTS The UW (n = 95) and KURE (n = 190) cohorts were similar in age (mean 75 years) and sex distribution (68% women). Jump power was similar between KURE and UW women (19.7 vs. 18.6 W/kg, p = 0.096) and slightly higher in KURE than UW in men (26.9 vs. 24.8 W/kg, p = 0.050). In UW and KURE, the prevalence of sarcopenia (7.4% in both), dysmobility syndrome (31.6% and 27.9%), or composite of either sarcopenia or dysmobility syndrome (32.6% and 28.4%) were comparable. Low jump power cut-offs for the composite outcome differed by sex but not by ethnicity (< 19.0 W/kg in women; < 23.8 W/kg in men). Low jump power was associated with elevated odds of sarcopenia (adjusted odds ratio [aOR] 4.07), dysmobility syndrome (aOR 4.32), or the composite of sarcopenia or dysmobility syndrome (aOR 4.67, p < 0.01 for all) independent of age, sex, height, and ethnicity. CONCLUSION Sex-specific jump power cut-offs were found to detect the presence of either sarcopenia or dysmobility syndrome in older adults independent of Asian or Caucasian ethnicity.
Collapse
Affiliation(s)
- N Hong
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - E Siglinsky
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin School of Medicine and Public Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
- UT Southwestern Medical Center, University of Texas Southwestern, Dallas, TX, USA
| | - D Krueger
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin School of Medicine and Public Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - R White
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin School of Medicine and Public Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - C O Kim
- Division of Geriatrics, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - H C Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Y Yeom
- Department of Sociology, Yonsei University College of Social Sciences, Seoul, Korea
| | - N Binkley
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin School of Medicine and Public Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - Y Rhee
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, Korea.
| | - B Buehring
- Osteoporosis Clinical Research Program, Department of Medicine, University of Wisconsin School of Medicine and Public Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
- Rheumazentrum Ruhrgebiet, Ruhr-Universität Bochum, Herne, Germany.
| |
Collapse
|
24
|
Schell TL, Krueger D, Binkley N, Hetzel S, Bernatz JT, Anderson PA. Opportunistic use of dual-energy X-ray absorptiometry to evaluate lumbar scoliosis. Arch Osteoporos 2021; 16:38. [PMID: 33624177 DOI: 10.1007/s11657-021-00898-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 01/21/2021] [Indexed: 02/03/2023]
Abstract
Low bone mineral density is associated with spinal deformity. Dual-energy X-ray absorptiometry (DXA), a modality that assesses bone density, portends a theoretical means to also assess spinal deformity. We found that DXA can reliably assess spine alignment. DXA may permit surveillance of spine alignment, i.e., scoliosis in the clinical setting. PURPOSE Osteoporosis and scoliosis are interrelated disease processes. Dual-energy X-ray absorptiometry (DXA), used to assess bone density, can also be used to evaluate spinal deformity since it captures a posteroanterior (PA) image of the lumbar spine. We assessed the use of DXA to evaluate lumbar spine alignment. METHODS A lumbar spine DXA phantom was used to assess the effects of axial and sagittal plane rotation on lumbar bone mineral content (BMC), density (BMD), and L1-L4 Cobb angle measurements. Using two subject cohorts, intra- and inter-observer reliability and validity of using DXA for L1-L4 Cobb angle measurements in the coronal and sagittal planes were assessed. RESULTS Axial and sagittal plane rotation greater than 15° and 10°, respectively, significantly reduced measured BMD and BMC; there was minimal effect on Cobb angle measurement reliability. In human subjects, excellent intra- and inter-observer reliability was observed using lumbar PA DXA images for Cobb angle measurements. Agreement between Cobb angles derived from lumbar PA DXA images and AP lumbar radiographs ranged from good to excellent. The mean difference in Cobb angles between supine lumbar PA DXA images and upright AP lumbar radiographs was 2.8° in all subjects and 5.8° in those with scoliosis. CONCLUSIONS Lumbar spine rotation does not significantly affect BMD and BMC within 15° and 10° of axial and sagittal plane rotation, respectively, and minimally affects Cobb angle measurement. Spine alignment in the coronal plane can be reliably assessed using lumbar PA DXA images.
Collapse
Affiliation(s)
- Trevor L Schell
- Department of Orthopedics and Rehabilitation, Medical Foundation Centennial Building, University of Wisconsin, 1685 Highland Ave, 6th floor, Madison, WI, 53705-2281, USA
| | - Diane Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Madison, WI, 53705, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Madison, WI, 53705, USA
| | - Scott Hetzel
- Department of Biostatistics and Medical Informatics, University of Wisconsin, 207G WARF Office Building, 610 Walnut Street, Madison, WI, 53726, USA
| | - James T Bernatz
- Department of Orthopedics and Rehabilitation, Medical Foundation Centennial Building, University of Wisconsin, 1685 Highland Ave, 6th floor, Madison, WI, 53705-2281, USA
| | - Paul A Anderson
- Department of Orthopedics and Rehabilitation, Medical Foundation Centennial Building, University of Wisconsin, 1685 Highland Ave, 6th floor, Madison, WI, 53705-2281, USA.
| |
Collapse
|
25
|
Binkley N, Goel H, Shives E, Krueger D, Hare K. A probable atypical ulnar fracture in a man receiving denosumab. Bone 2021; 143:115726. [PMID: 33130001 DOI: 10.1016/j.bone.2020.115726] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/16/2020] [Accepted: 10/26/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atypical femur fractures are widely recognized and associated with anti-resorptive therapy, most commonly bisphosphonates. These fractures generally occur in the femoral shaft or subtrochanteric region. Cases of atypical fractures at non-femur sites, including the ulna, have been reported. CASE REPORT Here we report a probable atypical ulnar fracture in a man receiving denosumab, who had been using his upper extremities for transfers and ambulation. Radiographs demonstrated a non-comminuted, transverse fracture somewhat similar to findings of atypical femur fractures. He was deemed a poor surgical candidate and treated with teriparatide. To our knowledge, this is the first reported probable atypical ulnar fracture potentially associated with denosumab use. CONCLUSION We believe it important that clinicians be aware of the association of anti-resorptive therapy with atypical fractures not only of the femur, but also at other skeletal sites. In patients on long-term anti-resorptive therapy, it is appropriate to consider that persistent "prodromal" pain might indicate an impending atypical fracture at an atypical skeletal site.
Collapse
|
26
|
White R, Krueger D, De Guio F, Michelet F, Hans D, Anderson P, Binkley N. An Exploratory Study of the Texture Research Investigational Platform (TRIP) to Evaluate Bone Texture Score of Distal Femur DXA Scans - A TBS-Based Approach. J Clin Densitom 2021; 24:112-117. [PMID: 31358359 DOI: 10.1016/j.jocd.2019.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/18/2019] [Accepted: 06/25/2019] [Indexed: 11/21/2022]
Abstract
Poor bone status is associated with increased complications following orthopedic surgery. Therefore, assessing site-specific skeletal status prior to or after orthopedic surgery to optimize outcomes is appealing. The trabecular bone score (TBS) approach, a surrogate for microarchitecture, was adapted to the Texture Research Investigational Platform (TRIP), which allows assessment of many skeletal sites imaged by various modalities. TRIP generates a bone texture score (TBS ORTHO), which could potentially guide surgical decision-making and offer insight into postsurgical fracture risk. As distal femur bone loss occurs following total knee arthroplasty (TKA), we hypothesized that TBS ORTHO after TKA would identify poorer texture in the operated femur compared to the nonoperated. We evaluated 30 subjects (15 M/15 F) with unilateral TKA 2-5 yr previously, mean age 67.9 yr and body mass index 30 kg/m2. Using a Lunar iDXA, lumbar spine and entire femur scans were obtained, the latter using the atypical femur fracture feature. Distal femur bone mineral density (BMD) and TBS ORTHO were obtained using manual regions of interest (ROI) at 15% and 25% of leg length from the intercondylar notch. TBS ORTHO was determined using distal femur DICOM images and TRIP v1.0 (Medimaps, France). Differences in operated vs nonoperated femur were evaluated by paired t test. As previously reported, operated leg BMD was approx 10% lower at 15% and 25% ROIs. Similarly, TBS ORTHO values in the operated leg were approx 5% lower (p < 0.05) at these same ROIs. Distal femur TBS ORTHO and BMD were largely unrelated. TBS ORTHO reproducibility at these ROIs was approx 3.5%. In conclusion, this pilot study documents the feasibility of reproducibly obtaining distal femur TBS ORTHO values. Lower values were observed in the surgical leg, consistent with the bone loss that follows TKA. Further work is indicated to refine TRIP use and evaluate whether such data provides guidance for surgical decision-making and improves periprosthetic fracture prediction.
Collapse
Affiliation(s)
- R White
- University of Wisconsin, Osteoporosis Clinical Research Program, Madison, WI, USA.
| | - D Krueger
- University of Wisconsin, Osteoporosis Clinical Research Program, Madison, WI, USA
| | - F De Guio
- Research and Development Department, Medimaps, Bordeaux, France
| | - F Michelet
- Research and Development Department, Medimaps, Bordeaux, France
| | - D Hans
- Research and Development Department, Medimaps, Bordeaux, France; Center of Bone Diseases, Bone and Joint Department, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - P Anderson
- University of Wisconsin, Department of Orthopedics and Rehabilitation, Madison, WI, USA
| | - N Binkley
- University of Wisconsin, Osteoporosis Clinical Research Program, Madison, WI, USA
| |
Collapse
|
27
|
Morgan SL, Krueger D, Bassler J, Burroughs L, Borchardt G, Yester M, Binkley N, Redden D. "Effect of very dense artifacts on Hologic and general electric bone densitometry results". Arch Osteoporos 2020; 15:77. [PMID: 32436138 DOI: 10.1007/s11657-020-00742-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/22/2020] [Indexed: 02/03/2023]
Abstract
UNLABELLED Very dense artifacts confound bone density measurement. Hologic and GE densitometers exclude artifact density and GE also excludes associated area. Consequently, BMD is decreased with Hologic software. Despite different manufacturers' approaches, when dense artifacts overlay the spine, the affected vertebral body should be excluded from the reported BMD. PURPOSE Very dense objects, such as lead bullets are described as "black hole" artifacts on Hologic densitometers. Whether similar results occur on GE scanners is not reported. We hypothesized that dense artifacts confound both brands of densitometers. METHODS Three lead bullets of varying size were placed overlying or adjacent to L3 on anthropomorphic and encapsulated aluminum spine phantoms. Three scans were acquired with and without projectiles on a Hologic Discovery W, GE iDXA, and Prodigy densitometer. RESULTS Lead bullets are measured as having high bone mineral content (BMC); they appear black in dual-energy mode on Hologic scanners and are colored blue on GE scanners. On Hologic scanners, BMC of a dense artifact over bone is excluded, but the bone area is not altered. Consequently, bone mineral density (BMD) of the affected vertebra, and of L1-4, is decreased. For example, a .45 caliber bullet over L3 decreased BMD (p < 0.05) by 48.3% and L1-4 by 9.1%. GE scanners excluded associated BMC and area covered by the artifact, thereby minimizing impact on BMD. Dense artifacts over soft tissue on a phantom do not substantially affect BMD on either manufacturer's densitometer when scanned. CONCLUSION Densitometer manufacturers handle very dense artifacts differently. GE software removes artifact BMC and area with resultant minimal impact on BMD, Hologic removes only BMC, not area, thereby decreasing BMD. Regardless of this difference, when dense artifacts overlay the spine, it is best to exclude the affected vertebral body. Finally, the BMD stability observed with artifacts over soft tissue may not be replicated in humans.
Collapse
Affiliation(s)
- Sarah L Morgan
- University of Alabama at Birmingham, Osteoporosis Prevention and Treatment Clinic and DXA Facility, Birmingham, AL, USA
| | - Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - John Bassler
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Leandria Burroughs
- University of Alabama at Birmingham, Osteoporosis Prevention and Treatment Clinic and DXA Facility, Birmingham, AL, USA
| | - Gretta Borchardt
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - Michael Yester
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Neil Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - David Redden
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| |
Collapse
|
28
|
Abstract
UNLABELLED Patients that sustain "osteoporosis-related" fractures may have normal BMD at the hips and spine, but rarely have normal bone when other clinically available studies are considered. Such data often exist and can inform clinical decisions regarding osteoporosis therapy. PURPOSE Dual-energy X-ray absorptiometry (DXA) measured bone mineral density (BMD) at the hip and spine is widely used to diagnose osteoporosis. However, patients that sustain "osteoporosis-related" fractures often have normal BMD at these sites. The aim of this study was to explore whether older adults with fracture, but normal reported hip and spine BMD, also have normal bone using additional clinically available assessments. METHODS This retrospective electronic medical record study included 387 patients evaluated by a university-based fracture liaison service with spine and hip DXA; 32 (8.3%) had normal spine/hip BMD reported. In this cohort, clinically available bone data including 0.3 and ultradistal radius T-scores, trochanteric T-scores, lumbar spine trabecular bone score (TBS), L1 opportunistic CT Hounsfield units (HU), and femoral cortical index (FCI) were assessed. RESULTS One or more of the above noted studies were available in 30/32 patients. UD and 0.3 radius results were available in 21 patients, and 18 (85.7%) had T-scores < - 1.0. Trochanteric values were available in 16; T-scores were < - 1.0 in 18.8%. TBS data were available in 24; partially degraded or degraded values were present in 41.7%. L1 opportunistic CT was available in 25 patients, 80% were below normal, and < 150 HU. Finally, femoral cortical index (FCI) was measurable in 9 subjects; 66.7% were below < 0.4. When including all additional available data in the skeletal assessment, only 5/387 (1.3%) were identified with normal bone. CONCLUSION Patients with normal spine/hip BMD who sustain fracture rarely have normal bone when all available data are considered.
Collapse
Affiliation(s)
- Sindhura Bandaru
- University of Wisconsin School of Medicine and Public Health, UW Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
| | - Kristyn Hare
- University of Wisconsin Department of Orthopedics, Madison, WI, USA
| | - Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - Neil Binkley
- University of Wisconsin School of Medicine and Public Health, UW Health, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.,University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| |
Collapse
|
29
|
Eisele TA, Adadevoh K, Anderson G, Brause A, Briesmeister D, Burke J, Cherix G, Ellis C, Hendricks S, Ho CT, Huang CJ, Iuliano T, Kline L, Knapp C, Krueger D, Terwel L. Determination of D-Malic Acid in Apple Juice by Liquid Chromatography: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/79.1.50] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Eleven laboratories collaboratively studied a liquid chromatographic (LC) method for determination of D-malic acid in apple juice. The mobile phase consisted of 16 mM L-valine and 8 mM copper acetate adjusted to pH 5.5 with NaOH. The UV detector was set at 330 nm, and a single reversed-phase LC column was used. Seven paired samples containing various amounts of D-malic acid ranging from 0 to 188 mg/100 mL of 12 Brix pasteurized apple juice were tested by each collaborator. Repeatability and reproducibility coefficients of variation ranged from 1.0 to 3.5% and 7.7 to 11.7%, respectively, within the range of 26 to 188 mg D-malic acid/100 mL of 12 Brix apple juice. The collabora tive study results demonstrated that the method could quantitate the economic adulteration of ap ple juice with DL-malic acid at lower levels than those reported with previous methods. The LC method for determination of D-malic acid in apple juice has been adopted first action by AOAC INTERNATIONAL.
Collapse
Affiliation(s)
- Thomas A Eisele
- Tree Top, Inc., Technical Center, PO Box 248, Selah, WA 98942
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
DeVries JW, Silvera KR, Al-Hasani S, Alfiere J, Berge C, Boerner C, Cardozo S, Chettiar M, Dupont K, Gustafson K, Hanson E, Kazeminy A, Krueger D, Mazal R, Meland P, Mioc B, Oehrl L, Vinski E, Willis D, Wittrig B. Determination of Vitamins A (Retinol) and E (alpha-Tocopherol) in Foods by Liquid Chromatography: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/85.2.424] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A collaborative study was conducted for the determination of vitamins A and E. Existing AOAC liquid chromatographic (LC) methods are suited for specific vitamins A and E analytical applications. This method differs from existing methods in that it can be used to assay samples in all 9 sectors of the food matrix. Standards and test samples are saponified in basic ethanol–water solution, neutralized, and diluted, converting fats to fatty acids and retinol esters and tocopherol esters to retinol and tocopherol, respectively. Retinol and alpha-tocopherol are quantitated on separate LC systems, using UV detection at 313 or 328 nm for retinol, and fluorescence detection (excitation 290 nm, emission 330 nm) for alpha-tocopherol. Vitamin concentrations are calculated by comparison of the peak heights or peak areas of vitamins in test samples with those of standards.
Collapse
Affiliation(s)
| | - Karlene R Silvera
- Medallion Laboratories, 9000 Plymouth Ave North, Minneapolis, MN 55427
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Widmer W, Brause A, Coppola E, Daniels K, Feicht R, Hendricks S, Kirksey ST, Kline LL, Krueger D, Martin SF, Matos J, Metcalf L, Nolan S, Smith C, Smith R, Trama T. Determination of Naringin and Neohesperidin in Orange Juice by Liquid Chromatography with UV Detection to Detect the Presence of Grapefruit Juice: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/83.5.1155] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Fifteen collaborating laboratories were sent 9 samples of citrus juice mixtures as blind duplicates for determination of naringin and neohesperidin by liquid chromatography. Two sample pairs were 100% orange juice and did not contain any naringin or neohesperidin. The remaining 7 sample pairs contained naringin at levels ranging from 3.9 to 46.5 ppm and neohesperidin at levels ranging from 0.14 to 35.6 ppm. Five sample pairs consisted of orange juice mixtures containing 1, 3, and 5% grapefruit juice; 5% sour orange; and 5% K-Early citrus variety. Two sample pairs were orange juice spiked with naringin, neohesperidin, sodium benzoate, and potassium sorbate. Data were received from 13 laboratories. Data from 1 collaborator were eliminated because the method protocol was not followed. Neohesperidin values from another laboratory were also not used because of problems with a coeluting component. Repeatability relative standard deviations ranged from 2.95 to 15.23% for naringin and from 3.00 to 11.74% for neohesperidin. Reproducibility relative standard deviations ranged from 11.34 to 31.94% for naringin and from 10.45 to 26.17% for neohesperidin. The method is reliable for detecting the presence of grapefruit juice in orange juice as indicated by a finding of ≥10 ppm naringin and ≤2 ppm neohesperidin. The method was adopted First Action by AOAC INTERNATIONAL.
Collapse
Affiliation(s)
- Wilbur Widmer
- Florida Department of Citrus, Citrus Research and Education Center, 700 Experiment Station Rd, Lake Alfred, FL 33850
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Taani MH, Siglinsky E, Libber J, Krueger D, Binkley N, Kovach CR, Buehring B. Semi-Recumbent Vibration Exercise in Older Adults: A Pilot Study of Methodology, Feasibility, and Safety. Gerontol Geriatr Med 2019; 5:2333721419881552. [PMID: 31663010 PMCID: PMC6796212 DOI: 10.1177/2333721419881552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/01/2019] [Accepted: 09/18/2019] [Indexed: 11/24/2022] Open
Abstract
Objectives: Older adults with impaired physical function are at risk for further functional decline
in part due to limited ability to engage in regular exercise. Effective approaches to
exercise in this vulnerable population are needed to improve functional capacity and
optimize independence. Methods: Thirty-two residential care apartment complex (RCAC) residents, age ≥70, with low short
physical performance battery (SPPB) scores were recruited and randomly assigned to a
crossover-design study exploring feasibility and safety of semi-recumbent vibration
exercise in older adults living in one RCAC. The primary outcomes were retention and
adherence rates and adverse events. Results: The retention rate was 78%. Adherence rate was 79.7% and 78.6% during the vibration and
control training sessions, respectively. Thirty-eight adverse events (AEs) occurred.
Mild muscle soreness and knee pain were the only AEs related to vibration exercise. No
serious adverse events (SAEs) were study-related. Participants were able to increase
training intensity and load and rated the training enjoyable. Conclusion: Semi-recumbent vibration exercise was feasible, well tolerated, and safe in RCAC
residents with reduced physical function. Future studies need to examine the effect of
this type of exercise on physical function, mobility, falls, and quality of life.
Collapse
Affiliation(s)
| | - Ellen Siglinsky
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| | - Jessie Libber
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| | - Diane Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| | - Neil Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| | | | - Bjoern Buehring
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, USA
| |
Collapse
|
33
|
Anderson PA, Morgan SL, Krueger D, Zapalowski C, Tanner B, Jeray KJ, Krohn KD, Lane JP, Yeap SS, Shuhart CR, Shepherd J. Use of Bone Health Evaluation in Orthopedic Surgery: 2019 ISCD Official Position. J Clin Densitom 2019; 22:517-543. [PMID: 31519473 DOI: 10.1016/j.jocd.2019.07.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 07/16/2019] [Indexed: 02/07/2023]
Abstract
This position development conference (PDC) Task Force examined the assessment of bone status in orthopedic surgery patients. Key questions included which orthopedic surgery patients should be evaluated for poor bone health prior to surgery and which subsets of patients are at high risk for poor bone health and adverse outcomes. Second, the reliability and validity of using bone densitometry techniques and measurement of specific geometries around the hip and knee before and after arthroplasty was determined. Finally, the use of computed tomography (CT) attenuation coefficients (Hounsfield units) to estimate bone quality at anatomic locations where orthopedic surgery is performed including femur, tibia, shoulder, wrist, and ankle were reviewed. The literature review identified 665 articles of which 198 met inclusion exclusion criteria and were selected based on reporting of methodology, reliability, or validity results. We recommend that the orthopedic surgeon be aware of established ISCD guidelines for determining who should have additional screening for osteoporosis. Patients with inflammatory arthritis, chronic corticosteroid use, chronic renal disease, and those with history of fracture after age 50 are at high risk of osteoporosis and adverse events from surgery and should have dual energy X-ray absorptiometry (DXA) screening before surgery. In addition to standard DXA, bone mineral density (BMD) measurement along the femur and proximal tibia is reliable and valid around implants and can provide valuable information regarding bone remodeling and identification of loosening. Attention to positioning, selection of regions of interest, and use of special techniques and software is required. Plain radiographs and CT provide simple, reliable methods to classify the shape of the proximal femur and to predict osteoporosis; these include the Dorr Classification, Cortical Index, and critical thickness. Correlation of these indices to central BMD is moderate to good. Many patients undergoing orthopedic surgery have had preoperative CT which can be utilized to assess regional quality of bone. The simplest method available on most picture archiving and communications systems is to simply measure a regions of interest and determine the mean Hounsfield units. This method has excellent reliability throughout the skeleton and has moderate correlation to DXA based on BMD. The prediction of outcome and correlation to mechanical strength of fixation of a screw or implant is unknown.
Collapse
Affiliation(s)
- Paul A Anderson
- Department of Orthopedics Surgery & Rehabilitation, University of Wisconsin UWMF Centennial Building, Madison, WI, USA.
| | - Sarah L Morgan
- UAB Osteoporosis Prevention and Treatment Clinic, University of Alabama Birmingham, Birmingham, AL, USA
| | - Diane Krueger
- University of Wisconsin, Osteoporosis Clinical Research Program, Madison, WI, USA
| | | | - Bobo Tanner
- Division Rheumatology, Vanderbilt University, Nashville, TN, USA
| | - Kyle J Jeray
- Greenville Health System, Deparment of Orthopaedic Surgery, Greenville, SC, USA
| | | | - Joseph P Lane
- Department of Orthopedic Surgery, Hospital for Special surgery, New York, USA
| | | | | | - John Shepherd
- University of Hawaii Cancer Center, University of Hawaii, Honolulu, HI, USA
| |
Collapse
|
34
|
Sanfilippo J, Krueger D, Heiderscheit B, Binkley N. Dual-Energy X-Ray Absorptiometry Body Composition in NCAA Division I Athletes: Exploration of Mass Distribution. Sports Health 2019; 11:453-460. [PMID: 31348720 DOI: 10.1177/1941738119861572] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Body composition assessment is frequently used in sports medicine and athletic performance environments to assess change in response to strength training and nutrition programs. However, to effectively do so requires knowledge regarding expected body composition values relative to sport and sex. Dual-energy x-ray absorptiometry (DXA) is widely used to evaluate body composition, although its utility in relationship to specific sports, performance, or rehabilitation is not clearly defined. HYPOTHESIS Body composition metrics and distribution of National Collegiate Athletic Association Division I collegiate athletes will vary based on sport and sex. LEVEL OF EVIDENCE Level 4. STUDY DESIGN Cross-sectional study. METHODS A convenience sample of 337 athletes (229 men and 108 women) participating in football, wrestling, soccer, hockey, basketball, golf, softball, or volleyball was evaluated. DXA-measured total body composition, including bone mineral density (BMD), % lean mass, % fat, and regional distribution, were compared by sex, sport, and with an age-matched National Health and Nutrition Examination Survey (NHANES) population. RESULTS Men had higher BMD, lower % fat (16.4% vs 25.2%) and higher % lean mass (79.2% vs 70.6%) (P < 0.001). Regional composition varied by sport and sex, with women having a greater proportion of lean mass at the trunk and men in their arms (P < 0.0001). Leg lean mass was distributed similarly between sexes (35%). Overall, the normative group (NHANES) had lower BMD and higher percentage fat. CONCLUSION DXA-measured body composition and lean mass distribution varies by sport and sex in Division I athletes. The observed difference to the NHANES population emphasizes challenges in identifying appropriate comparison populations, reinforcing the need to compare athletes with their own baseline. CLINICAL RELEVANCE These findings establish a framework to investigate the relevance of these variances and determine the utility of body composition analysis in elite athletes.
Collapse
Affiliation(s)
- Jennifer Sanfilippo
- University of Wisconsin Badger Athletic Performance Program, Madison, Wisconsin
| | - Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, Wisconsin
| | - Bryan Heiderscheit
- University of Wisconsin Badger Athletic Performance Program, Madison, Wisconsin.,University of Wisconsin Orthopedics and Rehabilitation, Madison, Wisconsin
| | - Neil Binkley
- University of Wisconsin Badger Athletic Performance Program, Madison, Wisconsin.,University of Wisconsin Osteoporosis Clinical Research Program, Madison, Wisconsin
| |
Collapse
|
35
|
Blaty T, Krueger D, Illgen R, Squire M, Heiderscheit B, Binkley N, Anderson P. DXA evaluation of femoral bone mineral density and cortical width in patients with prior total knee arthroplasty. Osteoporos Int 2019; 30:383-390. [PMID: 30171301 DOI: 10.1007/s00198-018-4682-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/19/2018] [Indexed: 01/07/2023]
Abstract
UNLABELLED Periprosthetic fractures after total knee arthroplasty (TKA) have devastating consequences. Osteoporosis increases periprosthetic fracture risk, but distal femur bone mineral density (BMD) is not measured post-TKA. This study measured distal femur BMD and cortical width; both were lower in the TKA compared to the non-operated leg. BMD measurement reproducibility was good. Standardized DXA regions of interest are proposed. INTRODUCTION Periprosthetic fractures following total knee arthroplasty (TKA) are not rare. We hypothesized that TKA is associated with low BMD, potentially increasing periprosthetic fracture risk. However, distal femur dual energy x-ray (DXA) measurement is virtually never performed after TKA due to lack of standardized approaches. Thus, this study's aims were to develop standard DXA femur regions of interest (ROIs), assess cortical width, and determine measurement reproducibility in TKA patients. METHODS Thirty adults (15 M/15 F) age 59-80 years with unilateral, primary TKA within 2-5 years had femoral DXA scans performed in duplicate using a Lunar iDXA densitometer. In prior work, we established that femur BMD was lowest in the distal metaphysis and highest in mid-shaft. Thus, BMD and cortical width were measured at 15%, 25%, and 60% of the femur length measured from the distal notch. Femur BMD and cortical width were compared between limbs (TKA vs. non-operated side) by paired t test. RESULTS BMD was 3.2-9.9% lower (p < 0.001) in the operated femur at all custom ROIs; substantial between individual differences existed with some up to 30% lower. Cortical width was lower (p < 0.05) at the 25% ROI on the TKA side. BMD reproducibility was excellent; CV 0.85-1.33%. CONCLUSIONS Distal femur BMD can be reproducibly measured using DXA and is ~ 10% lower on the TKA leg. Similarly, medial and lateral cortices are thinner at the 25% ROI. These bone changes likely increase periprosthetic fracture risk. Further work to define and mitigate periprosthetic fracture risk after TKA is needed.
Collapse
Affiliation(s)
- T Blaty
- Osteoporosis Clinical Research Program, University of Wisconsin School of Medicine and Public Health, 2870 University Ave. Ste. 100, Madison, WI, 53705, USA
| | - D Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin School of Medicine and Public Health, 2870 University Ave. Ste. 100, Madison, WI, 53705, USA
| | - R Illgen
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - M Squire
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - B Heiderscheit
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - N Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin School of Medicine and Public Health, 2870 University Ave. Ste. 100, Madison, WI, 53705, USA.
| | - P Anderson
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| |
Collapse
|
36
|
Thomas B, Binkley N, Anderson PA, Krueger D. DXA Measured Distal Femur Bone Mineral Density in Patients After Total Knee Arthroplasty: Method Development and Reproducibility. J Clin Densitom 2019; 22:67-73. [PMID: 30228047 DOI: 10.1016/j.jocd.2018.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/07/2018] [Accepted: 08/07/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Total knee arthroplasty (TKA) is increasingly being performed. Distal femur periprosthetic fracture is a potentially catastrophic complication following TKA and existing data document substantial distal femur bone mineral density (BMD) loss following TKA. However, distal femur BMD is virtually never measured clinically as no consensus approach exists. This pilot study's purpose was to define regional BMD variation throughout the femur, suggest standard dual-energy X-ray absorptiometry (DXA) regions of interest (ROIs) and evaluate BMD reproducibility at these ROIs. METHODS Thirty volunteers 2-5 yr post TKA had both entire femurs imaged twice using a Lunar iDXA with subject repositioning between scans; the atypical femur fracture feature of enCORE software was utilized. To define femoral BMD distribution, custom 1 cm ROIs were stacked one atop the other starting at the intercondylar notch and continuing to the base of the lesser trochanter. Femur length was measured with the ruler tool to calculate distance at 5% increments. ROIs encompassing each 5% increment were utilized to measure BMD at each location. Descriptive statistics were used to determine mean BMD at each ROI and reproducibility at the 15%, 25%, 45%, 60%, and 80% ROIs. RESULTS The 5 and 10% ROIs included prosthetic and/or patella, causing high BMD values. Distal femur BMD was lowest at the 15% ROI and was higher (p < 0.05) at each more proximal ROI to 45%, then plateaued from 45% to 75%. BMD reproducibility at these regions was excellent; coefficient of variation (CV) from ∼1% to 3.5%. As periprosthetic fractures generally occur in the distal femur, we propose measuring femur BMD using ROIs placed at 15% and 25%. A 60% region could also be used as a highly cortical site. CONCLUSION Existing DXA capabilities allow distal femur BMD measurement with good reproducibility. Further research using standardized ROIs to assess distal femur BMD loss after TKA, and interventions to mitigate this loss, is indicated.
Collapse
Affiliation(s)
- B Thomas
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA;.
| | - N Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - P A Anderson
- Department of Orthopedic Surgery and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| | - D Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| |
Collapse
|
37
|
Krueger D, Shives E, Siglinsky E, Libber J, Buehring B, Hansen KE, Binkley N. DXA Errors Are Common and Reduced by Use of a Reporting Template. J Clin Densitom 2019; 22:115-124. [PMID: 30327243 DOI: 10.1016/j.jocd.2018.07.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 12/29/2022]
Abstract
OBJECTIVE High quality dual energy X-ray absorptiometry (DXA) acquisition, analysis, and reporting demands technical and interpretive excellence. We hypothesized that DXA errors are common and of such magnitude that incorrect clinical decisions might result. In this 2-phase study, we evaluated DXA technical and interpretation error rates in a clinical population and subsequently assessed if implementing an interpretation template reduced errors. METHODS In phase 1, DXA scans of 345 osteoporosis clinic referrals were reviewed by International Society for Clinical Densitometry-certified technologists (n = 3) and physicians (n = 3). Technologists applied International Society for Clinical Densitometry performance standards to assess technical quality. Physicians assessed reporting compliance with published guidance, relevance of technical errors and determined overall and major error prevalence. Major errors were defined as "provision of inaccurate information that could potentially lead to incorrect patient care decisions." In phase 2, a DXA reporting template was implemented at 2 clinical DXA sites after which the 3 physicians reviewed 200 images and reports as above. The error prevalence was compared with the 298 patients in phase 1 from these sites. RESULTS In phase 1, technical errors were identified in 90% of patients and affected interpretation in 13%. Interpretation errors were present in 80% of patients; 42% were major. The most common major errors were reporting incorrect information on bone mineral density change (70%) and incorrect diagnosis (22%). In phase 2, at these 2 clinical sites, major errors were present in 37% before and 17% after template implementation. Template usage reduced the odds of major error by 66% (odds ratio 0.34, 95% confidence interval 0.21, 0.53, and p < 0.0001). CONCLUSION DXA technical and interpretation errors are extremely common and likely adversely affect patient care. Implementing a DXA reporting template reduces major errors and should become common practice. Additional interventions, such as requiring initial and ongoing training and/or certification for technologists and interpreters, are suggested.
Collapse
Affiliation(s)
- D Krueger
- University of Wisconsin-Madison, Madison, WI, USA.
| | - E Shives
- University of Wisconsin-Madison, Madison, WI, USA
| | - E Siglinsky
- University of Wisconsin-Madison, Madison, WI, USA
| | - J Libber
- University of Wisconsin-Madison, Madison, WI, USA
| | - B Buehring
- University of Wisconsin-Madison, Madison, WI, USA
| | - K E Hansen
- University of Wisconsin-Madison, Madison, WI, USA
| | - N Binkley
- University of Wisconsin-Madison, Madison, WI, USA
| |
Collapse
|
38
|
Abstract
UNLABELLED Degenerative changes falsely elevate BMD; however, their impact on TBS is unclear. This study examined how spinal degenerative changes affect TBS-adjusted fracture risk (FRAX). In a majority, but not all patients in this sample, TBS decreased after exclusion of vertebrae with degenerative change. Therefore, vertebral exclusion for TBS is suggested. INTRODUCTION Spinal degenerative changes elevate DXA-measured BMD, but reports find trabecular bone score (TBS) relatively unaffected. However, we observed patients where degenerative changes elevated both. Consequently, this study explored whether vertebral exclusion impacts TBS and subsequently TBS-adjusted FRAX risk. METHODS Clinical DXA interpretations of one physician were reviewed; those with vertebrae excluded per ISCD guidance were included in this study. BMD and TBS at L1-4 and from post-exclusion vertebrae were collected and used to adjust fracture risk (FRAX). RESULTS Of the patients, 102 had vertebrae excluded; their mean (SD) age, BMI, and lowest T-score were 71.6 (9.5) years, 25.4 (4.5) kg/m2, and - 2.8 (1.0), respectively. Compared to L1-4, vertebral exclusion lowered (p < 0.0001) mean spine BMD and TBS by 9.5 and 3.1%, respectively. Vertebral exclusion decreased TBS by 0.040, being lower in 83%. In those with lower TBS, the mean adjusted 10-year fracture risk increased (p < 0.0001) by 0.94 and 0.32% for major osteoporotic (MOF) and hip fracture, respectively, in some risk increased by up to 4%. In those with higher TBS, adjusted risk was reduced, MOF - 0.49% and hip - 0.1%. CONCLUSION Vertebral exclusion following ISCD recommendations generally, but not always, lowers TBS. Consequently, the impact on TBS adjusted FRAX risk is variable. In most patients, vertebral exclusion lowers TBS; in some, this could result in a relevant change in calculated fracture risk. It seems reasonable to use TBS values from evaluable vertebrae to adjust FRAX. Further research to determine if vertebral exclusion improves fracture risk prediction is needed.
Collapse
Affiliation(s)
- R White
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
| | - N Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - D Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| |
Collapse
|
39
|
Krueger D, Demir IE, Ceyhan GO, Zeller F, Schemann M. bis-(p-hydroxyphenyl)-pyridyl-2-methane (BHPM)-the active metabolite of the laxatives bisacodyl and sodium picosulfate-enhances contractility and secretion in human intestine in vitro. Neurogastroenterol Motil 2018; 30:e13311. [PMID: 29441646 DOI: 10.1111/nmo.13311] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/16/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Stimulant laxatives are widely used to treat constipation. We investigated in human small and large intestinal preparations the effects of bis-(p-hydroxyphenyl)-pyridyl-2-methane (BHPM), the active metabolite of the laxatives bisacodyl and sodium picosulfate on smooth muscle tone and epithelial secretion. METHODS Circular and longitudinal muscle tone of small or large intestinal preparations were recorded with isometric force transducers. Epithelial ion flux (ISC ) and tissue resistance was measured with Ussing chamber technique after apical and basolateral BHPM application to large intestinal mucosa/submucosa preparations. Studies were performed in macroscopically normal specimens from 79 patients. KEY RESULTS BHPM concentration-dependently (0.5-5 μM) increased the tone of circular and longitudinal muscle from small to large intestine. The effect was strongest in large intestinal longitudinal muscle and smallest in small intestinal circular muscle. Increase in muscle tone was prevented by the L-type Ca++ channel blocker nifedipine but insensitive to the nerve blocker tetrodotoxin. Apical or basolateral BHPM concentration-dependently decreased or increased ISC, respectively. The KCa 1.1 (BK) channel blocker iberiotoxin reversed apical ISC decrease whereas tetrodotoxin reversed basolateral ISC increase. BHPM had no effect on tissue resistance or nerve-mediated secretory or muscle response with one exception: at the highest concentration basolateral BHPM reduced nerve-mediated secretion. CONCLUSIONS AND INTERFERENCES BHPM enhanced mucosal secretion and muscle contractility. Results suggested that the laxative effect of BHPM was a consequence of the increase in muscle tone as well as an increased K+ secretion when acting luminally and a nerve-driven Cl- and HCO3- secretion once acting basolaterally after absorption.
Collapse
Affiliation(s)
- D Krueger
- Human Biology, Technische Universität München, Freising, Germany
| | - I E Demir
- Department of Surgery, Klinikum Rechts der Isar Technische Universität München, Munich, Germany
| | - G O Ceyhan
- Department of Surgery, Klinikum Rechts der Isar Technische Universität München, Munich, Germany
| | - F Zeller
- Surgery, Clinic Freising, Freising, Germany
| | - M Schemann
- Human Biology, Technische Universität München, Freising, Germany
| |
Collapse
|
40
|
Siglinsky E, Buehring B, Krueger D, Binkley N, Yamada Y. Could bioelectric impedance spectroscopy (BIS) measured appendicular intracellular water serve as a lean mass measurement in sarcopenia definitions? A pilot study. Osteoporos Int 2018; 29:1653-1657. [PMID: 29574521 DOI: 10.1007/s00198-018-4475-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 03/06/2018] [Indexed: 01/25/2023]
Abstract
UNLABELLED DXA lean mass measurement for sarcopenia diagnosis is not always possible. Bioelectric impedance spectroscopy (BIS), a portable technology, is a potential alternative to DXA-measured lean mass. This pilot study explores the possibility and proposes an arbitrarily chosen potential cut-point for appendicular intracellular water corrected by height (aICW/ht2). INTRODUCTION Sarcopenia definitions often include DXA lean mass measurement. However, DXA is not always available. We explored the potential of a less-expensive mobile method, bioelectric impedance spectroscopy (BIS), to assess lean mass for sarcopenia determination. We hypothesized that BIS-measured appendicular intracellular water (aICW/ht2) would correlate with DXA-measured appendicular lean mass (ALM)/ht2 and with functional parameters. If so, establishing an aICW/ht2 cut-point in sarcopenia definitions may be feasible. METHODS Sixty-one community-dwelling women, mean age 79.9, had BIS and DXA lean mass, grip strength, gait speed, and jumping mechanography assessments. BIS aICW was calculated using limb length and intracellular water resistance. aICW/ht2 was compared to DXA-measured ALM/ht2 by linear regression. The European Working Group ALM/ht2 and an exploratory aICW/ht2 cut-point were utilized. RESULTS In this cohort, ALM/ht2 and aICW/ht2 were moderately correlated, R2 = 0.55, p < 0.0001. Lean mass was low in 7 and normal in 44 by BIS and DXA. Those with low aICW/ht2 had lower grip strength (p = 0.04) and jump power (p = 0.0002) than those with normal aICW/ht2 and ALM/ht2. Subjects with low ALM/ht2 had lower jump power (p = 0.0006) but were not different in gait speed or grip strength. CONCLUSIONS BIS aICW is correlated with DXA-measured ALM directly, and when height adjusted. An aICW/ht2 cut-point of 6.5 L/m2 identified 70% of women with low ALM/ht2. Women with low lean mass by DXA and BIS had poorer function measured by jump power. These pilot data support further evaluation of BIS measurement inclusion into sarcopenia definitions.
Collapse
Affiliation(s)
- E Siglinsky
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - B Buehring
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - D Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - N Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
| | - Y Yamada
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| |
Collapse
|
41
|
Binkley N, Krueger D, de Papp AE. Multiple vertebral fractures following osteoporosis treatment discontinuation: a case-report after long-term Odanacatib. Osteoporos Int 2018; 29:999-1002. [PMID: 29455249 DOI: 10.1007/s00198-018-4385-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/04/2018] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Case reports of women sustaining multiple vertebral fractures (VF) soon afterdenosumab discontinuation are accumulating. METHODS We report a woman with five new vertebral fractures in ~8 months following discontinuation of long-term odanacatib (ODN), an experimental cathepsin K inhibitor. RESULTS DXA examination demonstrated an ~12% decline in bone mineral density (BMD) and ~9% decline in trabecular bone score (TBS) since ODN discontinuation. Laboratory evaluation did not reveal a secondary cause of bone loss. CONCLUSIONS This case mimics observations following denosumab discontinuation, but, to our knowledge, is the first reported with ODN and the first documenting substantial decline in TBS. While not directly clinically relevant as ODN is no longer being developed, this case raises the possibility that a syndrome of multiple vertebral fractures could follow discontinuation of various potent osteoporosis therapies that produce major BMD increases but do not have persisting bone effects (i.e., all non-bisphosphonates). Use of antiresorptive therapies to prevent rapid bone loss following discontinuation of potent bone active agents seems appropriate. Identification of those patients who could be at risk for the multiple VF syndrome is needed.
Collapse
Affiliation(s)
- N Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
| | - D Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - A E de Papp
- Merck Research Laboratories, Merck & Co., Inc., Kenilworth, NJ, USA
| |
Collapse
|
42
|
Siglinsky E, Binkley N, Krueger D. Do Textiles Impact DXA Bone Density or Body Composition Results? J Clin Densitom 2018; 21:303-307. [PMID: 28988694 DOI: 10.1016/j.jocd.2017.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/25/2017] [Accepted: 08/29/2017] [Indexed: 11/24/2022]
Abstract
External artifacts can confound dual-energy X-ray absorptiometry (DXA) measurements. It is often accepted that garments free of metal do not affect DXA results; however, little data exist in this regard. It is plausible that some textiles absorb radiation and thereby alter DXA results. We hypothesized that some dense or synthetic textiles, for example, reflective materials, might alter DXA-measured bone and soft tissue mass. Hologic and GE Lunar spine phantoms and a Bioclinica prototype total body phantom were imaged on a GE Lunar iDXA and Prodigy densitometer. Each phantom was scanned 10 times to establish mean values. Subsequently, 2 layers of various fabrics were placed over the entire top surface of the phantom, and 10 scans were performed without repositioning. Samples of natural, synthetic, or embellished fabric (including those with reflective material) and of varying thickness were used. Wilcoxon signed rank tests were used to compare the means between bare phantom and textile-covered phantom. Significant differences were demonstrated often, depending on the scanner, phantom, and textile used. A polyester fabric with reflective strip consistently altered measurements. For example, this fabric increased measured mean lumbar spine bone mineral density and total body bone mineral content by 0.008 g/cm2 and 3.6 g, respectively (p < 0.01). Similarly, mean total body fat decreased (-173 g) and lean mass increased (+213 g; p < 0.01). Fat and lean mass were also affected by metallic thread, wool, blend denim, and shiny polyester (p < 0.05), and lean mass was affected by cotton denim and sweatshirt material (p < 0.0003). In conclusion, textiles can affect DXA-measured bone mineral density and body composition results. Even small amounts of reflective material could alter mass measurements by ~25% of the least significant change. Clothing made of dense textiles (e.g., wool and denim) or those with reflective material and metallic thread should be avoided during DXA scanning.
Collapse
Affiliation(s)
- E Siglinsky
- Osteoporosis Clinical Research Program, University of Wisconsin, Madison, WI, USA
| | - N Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin, Madison, WI, USA
| | - D Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin, Madison, WI, USA.
| |
Collapse
|
43
|
Affiliation(s)
- Diane Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA.
| | - Neil Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| | - Sarah Morgan
- University of Wisconsin Osteoporosis Clinical Research Program, Madison, WI, USA
| |
Collapse
|
44
|
Buehring B, Siglinsky E, Krueger D, Evans W, Hellerstein M, Yamada Y, Binkley N. Comparison of muscle/lean mass measurement methods: correlation with functional and biochemical testing. Osteoporos Int 2018; 29:675-683. [PMID: 29198074 DOI: 10.1007/s00198-017-4315-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 11/13/2017] [Indexed: 12/25/2022]
Abstract
UNLABELLED DXA-measured lean mass is often used to assess muscle mass but has limitations. Thus, we compared DXA lean mass with two novel methods-bioelectric impedance spectroscopy and creatine (methyl-d3) dilution. The examined methodologies did not measure lean mass similarly and the correlation with muscle biomarkers/function varied. INTRODUCTION Muscle function tests predict adverse health outcomes better than lean mass measurement. This may reflect limitations of current mass measurement methods. Newer approaches, e.g., bioelectric impedance spectroscopy (BIS) and creatine (methyl-d3) dilution (D3-C), may more accurately assess muscle mass. We hypothesized that BIS and D3-C measured muscle mass would better correlate with function and bone/muscle biomarkers than DXA measured lean mass. METHODS Evaluations of muscle/lean mass, function, and serum biomarkers were obtained in older community-dwelling adults. Mass was assessed by DXA, BIS, and orally administered D3-C. Grip strength, timed up and go, and jump power were examined. Potential muscle/bone serum biomarkers were measured. Mass measurements were compared with functional and serum data using regression analyses; differences between techniques were determined by paired t tests. RESULTS Mean (SD) age of the 112 (89F/23M) participants was 80.6 (6.0) years. The lean/muscle mass assessments were correlated (.57-.88) but differed (p < 0.0001) from one another with DXA total body less head being highest at 37.8 (7.3) kg, D3-C muscle mass at 21.1 (4.6) kg, and BIS total body intracellular water at 17.4 (3.5) kg. All mass assessment methods correlated with grip strength and jump power (R = 0.35-0.63, p < 0.0002), but not with gait speed or repeat chair rise. Lean mass measures were unrelated to the serum biomarkers measured. CONCLUSIONS These three methodologies do not similarly measure muscle/lean mass and should not be viewed as being equivalent. Functional tests assessing maximal muscle strength/power (grip strength and jump power) correlated with all mass measures whereas gait speed was not. None of the selected serum measures correlated with mass. Efforts to optimize muscle mass assessment and identify their relationships with health outcomes are needed.
Collapse
Affiliation(s)
- B Buehring
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - E Siglinsky
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - D Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA
| | - W Evans
- University of California, Berkeley, CA, USA
| | | | - Y Yamada
- National Institute of Health & Nutrition, Tokyo, Japan
| | - N Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Avenue, Suite 100, Madison, WI, 53705, USA.
| |
Collapse
|
45
|
Morgan S, Krueger D, Burroughs L, Binkley N. Impact of Very Dense Artifacts on Hologic and GE Lunar Densitometers. J Clin Densitom 2018. [DOI: 10.1016/j.jocd.2017.10.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
46
|
Binkley N, Krueger D, Siglinsky E, Shives E, Buehring B, Hansen K. An Interpretation Template Reduces DXA Reporting Errors. J Clin Densitom 2018. [DOI: 10.1016/j.jocd.2017.10.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
47
|
Dowthwaite JN, Winzenrieth R, Binkley N, Krueger D, Scerpella TA. A focused evaluation of lumbar spine trabecular bone score in the first year post-menarche. Arch Osteoporos 2017; 12:90. [PMID: 29046970 DOI: 10.1007/s11657-017-0388-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 10/10/2017] [Indexed: 02/03/2023]
Abstract
UNLABELLED Trabecular bone score, an index of lumbar spine trabecular texture, has not been explored fully in adolescent girls. Our cross-sectional analysis supported the hypothesis that "adult normal" trabecular bone score has been achieved by the end of the first year post-menarche, providing a potential screening tool, independent from bone density. INTRODUCTION Trabecular bone score (TBS) evaluates lumbar spine (LS) trabecular texture from DXA images. Limited evidence suggests low TBS in pre-pubertal girls. TBS has not been assessed in the context of the key peri-menarcheal bone accrual phase. Thus, we evaluated (1) whether "normal" adult TBS (≥ 1.35) is reached in the first year post-menarche and (2) the role of maturational timing (menarcheal age) and status (gynecological age) in TBS variation. METHODS For 44 healthy girls aged 11 to 13 years, whole body and LS DXA scans were obtained within 1 year post-menarche. As TBS is optimized for adults and can be affected by body thickness, custom software provided unadjusted "rawTBS" and adjusted for tissue thickness "corrTBS" (TBS iNsight, Medimaps, France). Correlations evaluated menarcheal age and gynecological age as factors in LS bone mineral content (BMC), areal bone mineral density (BMD), and TBS. RESULTS Lowest observed TBS exceeded 1.35 (rawTBS = 1.362; corrTBS = 1.352). Menarcheal age correlated negatively with rawTBS (r = - 0.34, p = 0.02), with a similar trend for corrTBS (r = - 0.29, p < 0.06). Gynecological age did not correlate with TBS but was positively correlated with LSBMD (r = + 0.37, p = 0.01). Correlations with body composition variables differed between rawTBS and corrTBS. CONCLUSIONS In this healthy cohort, "normal" adult TBS is present by 1 year post-menarche, 2 years before projected LS peak bone mass. Thus, TBS may be a useful bone architectural screen during the first post-menarcheal year, enabling intervention to improve structure prior to "peak bone mass". Longitudinal studies are needed to elucidate TBS development and intervention response.
Collapse
Affiliation(s)
- Jodi N Dowthwaite
- Department of Orthopedic Surgery, SUNY Upstate Medical University, 750 E. Adams St, Syracuse, NY, 13210, USA.
| | | | - N Binkley
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - D Krueger
- Osteoporosis Clinical Research Program, University of Wisconsin-Madison, Madison, WI, USA
| | - T A Scerpella
- Department of Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, USA
| |
Collapse
|
48
|
Yamada Y, Buehring B, Krueger D, Anderson RM, Schoeller DA, Binkley N. Electrical Properties Assessed by Bioelectrical Impedance Spectroscopy as Biomarkers of Age-related Loss of Skeletal Muscle Quantity and Quality. J Gerontol A Biol Sci Med Sci 2017; 72:1180-1186. [PMID: 28814064 PMCID: PMC5861891 DOI: 10.1093/gerona/glw225] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/19/2016] [Indexed: 12/25/2022] Open
Abstract
Skeletal muscle, in addition to being comprised of a heterogeneous muscle fiber population, also includes extracellular components that do not contribute to positive tensional force production. Here we test segmental bioelectrical impedance spectroscopy (S-BIS) to assess muscle intracellular mass and composition. S-BIS can evaluate electrical properties that may be related to muscle force production. Muscle fiber membranes separate the intracellular components from the extracellular environment and consist of lipid bilayers which act as an electrical capacitor. We found that S-BIS measures accounted for ~85% of the age-related decrease in appendicular muscle power compared with only ~49% for dual-energy x-ray absorptiometry (DXA) measures. Indices of extracellular (noncontractile) and cellular (contractile) compartments in skeletal muscle tissues were determined using the Cole-Cole plot from S-BIS measures. Characteristic frequency, membrane capacitance, and phase angle determined by Cole-Cole analysis together presented a S-BIS complex model that explained ~79% of interindividual variance of leg muscle power. This finding underscores the value of S-BIS to measure muscle composition rather than lean mass as measured by DXA and suggests that S-BIS should be highly informative in skeletal muscle physiology.
Collapse
Affiliation(s)
- Yosuke Yamada
- Department of Nutritional Science, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - Bjoern Buehring
- Osteoporosis Clinical Research Program
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison
- GRECC, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| | | | - Rozalyn M Anderson
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison
- GRECC, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| | | | - Neil Binkley
- Osteoporosis Clinical Research Program
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison
- GRECC, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| |
Collapse
|
49
|
Ostertag D, Annahazi A, Krueger D, Michel K, Demir IE, Ceyhan GO, Zeller F, Schemann M. Tryptase potentiates enteric nerve activation by histamine and serotonin: Relevance for the effects of mucosal biopsy supernatants from irritable bowel syndrome patients. Neurogastroenterol Motil 2017; 29. [PMID: 28374503 DOI: 10.1111/nmo.13070] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 02/23/2017] [Indexed: 01/02/2023]
Abstract
BACKGROUND We previously showed that mucosal biopsy supernatants from irritable bowel syndrome patients activated neurons despite low concentrations of tryptase, histamine, and serotonin which individually would not cause spike discharge. We studied the potentiating responses between these mediators on excitability of enteric neurons. METHODS Calcium-imaging was performed using the calcium-sensitive dye Fluo-4 AM in human submucous plexus preparations from 45 individuals. Histamine, serotonin, and tryptase were applied alone and in combinations to evaluate nerve activation which was assessed by analyzing increase in intracellular Ca2+ ([Ca2+ ]i ), the proportion of responding neurons and the product of both defined as Ca-neuroindex (NI). Protease activated receptor (PAR) 2 activating peptide, PAR2 antagonist and the serine protease-inhibitor FUT-175 were used to particularly investigate the role of proteases. KEY RESULTS Histamine or serotonin (1 μmol/L each) evoked only few small responses (median NI [25%/75%]: 0 [0/148]; 85 [0/705] respectively). Their combined application evoked statistically similar responses (216 [21/651]). Addition of the PAR2 activator tryptase induced a significantly higher Ca-NI (1401 [867/4075]) compared to individual application of tryptase or to coapplied histamine and serotonin. This synergistic potentiation was neither mimicked by PAR2 activating peptide nor reversed by the PAR2 antagonist GB83, but abolished by FUT-175. CONCLUSIONS & INFERENCES We observed synergistic potentiation between histamine, serotonin, and tryptase in enteric neurons, which is mediated by proteolytic activity rather than PAR2 activation. This explained neuronal activation by a cocktail of these mediators despite their low concentrations and despite a relatively small PAR2-mediated response in human submucous neurons.
Collapse
Affiliation(s)
- D Ostertag
- Human Biology, Technical University of Munich, Freising, Germany
| | - A Annahazi
- Human Biology, Technical University of Munich, Freising, Germany
| | - D Krueger
- Human Biology, Technical University of Munich, Freising, Germany
| | - K Michel
- Human Biology, Technical University of Munich, Freising, Germany
| | - I E Demir
- Department of Surgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - G O Ceyhan
- Department of Surgery, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - F Zeller
- Department of Surgery, Klinikum Freising, Freising, Germany
| | - M Schemann
- Human Biology, Technical University of Munich, Freising, Germany
| |
Collapse
|
50
|
Binkley N, Coursin D, Krueger D, Iglar P, Heiner J, Illgen R, Squire M, Lappe J, Watson P, Hogan K. Surgery alters parameters of vitamin D status and other laboratory results. Osteoporos Int 2017; 28:1013-1020. [PMID: 27826645 DOI: 10.1007/s00198-016-3819-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/24/2016] [Indexed: 12/12/2022]
Abstract
UNLABELLED Fracture liaison services often perform laboratory testing, but these results may be altered by surgery. In 40 hip arthroplasty patients, many laboratory parameters of bone health relevance were reduced by 8-22% on the first post-operative day. Laboratory results obtained in the immediate post-surgery interval do not reliably ascertain baseline status. INTRODUCTION As secondary causes of osteoporosis are common, fracture liaison services often perform laboratory testing in the immediate post-fracture interval. We hypothesized that laboratory results obtained shortly after surgery may not accurately ascertain baseline status. If true, such alterations might confound subsequent fracture prevention efforts. METHODS Patients undergoing elective total hip arthroplasty were studied as a surrogate for hip fracture patients. Blood and urine were obtained 2 weeks before surgery, before anesthetic induction, on post-operative day one, and 6 weeks after surgery. Serum total and free 25-hydroxyvitamin D (25(OH)D), vitamin D-binding protein (DBP), calcium, creatinine, albumin (Alb), alkaline phosphatase (ALP), plasma hemoglobin (Hgb) and urinary DBP/creatinine ratio (UDBP/Cr) were measured. RESULTS Forty volunteers (28 women; 12 men) with mean age of 65.7 [8.7] years were studied. Laboratory results were stable from 2 weeks before to the day of surgery. On the first day after surgery, total 25(OH)D, DBP, calcium, creatinine, ALP, and Alb declined 8-22% (p < 0.0001); free 25(OH)D and Hgb declined by 8 and 15% (p < 0.01), respectively; and UDBP/Cr increased 32% (p < 0.01). Using a 25(OH)D <30 ng/mL threshold, vitamin D inadequacy prevalence increased from 38% before surgery to 68% the day after (p < 0.001). All laboratory values returned to baseline at 6 weeks after surgery. CONCLUSIONS Laboratory values are reduced immediately following elective total hip arthroplasty. Testing at that time does not accurately ascertain baseline status and may lead to elevated estimates of vitamin D inadequacy, incorrect interventions, and misallocation of healthcare resources.
Collapse
Affiliation(s)
- N Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Ave, Madison, WI, 53705, USA.
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
| | - D Coursin
- Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, B6/319 CSC, Madison, WI, 53792-3272, USA
| | - D Krueger
- University of Wisconsin Osteoporosis Clinical Research Program, 2870 University Ave, Madison, WI, 53705, USA
| | - P Iglar
- Department of Population Health Sciences, University of Wisconsin School of Medicine and Public Health, 707 WARF Building, 610 North Walnut Street, Madison, WI, 53726, USA
| | - J Heiner
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Avenue, Madison, WI, 53705-2281, USA
| | - R Illgen
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Avenue, Madison, WI, 53705-2281, USA
| | - M Squire
- Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, 1685 Highland Avenue, Madison, WI, 53705-2281, USA
| | - J Lappe
- Creighton University Osteoporosis Research Center, 601 N. 30th Street, Suite 4820, Omaha, NE, 68131, USA
| | - P Watson
- Creighton University Osteoporosis Research Center, 601 N. 30th Street, Suite 4820, Omaha, NE, 68131, USA
| | - K Hogan
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, B6/319 CSC, Madison, WI, 53792-3272, USA
| |
Collapse
|