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Osteoporosis after Stroke: A Review of the Causes and Potential Treatments
Open accessAbstract
Osteoporosis is a known consequence of stroke, associated with an increased incidence of fractures, mainly of the hip, leading to further disability. The pattern of bone loss seen in stroke patients is different from that usually encountered with postmenopausal osteoporosis, since it is limited to the paretic side and more evident in the upper extremities. Several factors appear to have an influence on bone mass in stroke patients, such as the degree of paresis, gait disability and the duration of immobilization. The pathogenesis of osteoporosis after stroke remains unclear. Paresis, reduced mobility and reduced bone load seem to play a major role. Other factors such as nutritional and iatrogenic ones may also play an important part. In this paper, the clinical evidence, pathophysiology and possible treatments of poststroke osteoporosis will be reviewed.
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Affected trial reports were included in three reviews where it was unclear if findings would be altered by the omission of the affected reports' data.
“Affected trial reports were included in three reviews (Alibhai et al 35 118 citations, October 2018; Carda et al 36 24 citations, September 2018; Simpson et al 37 14 citations, April 2018) where it was unclear if findings would be altered by the omission of the affected reports’ data.”
From An investigation into the impact and implications of published papers from retracted research: systematic search of affected literature (2019) · cites this paper as [36]
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16 retracted
Sato, Y., Iwamoto, J., Kanoko, T., & Satoh, K. (2005) · Archives of Internal Medicine · doi:10.1001/archinte.165.15.1743 · Cited by 139
RetractedRisedronate therapy for prevention of hip fracture after stroke in elderly women [RETRACTED]
(2005) · Neurology · doi:10.1212/01.wnl.0000152871.65027.76 · Cited by 81
RetractedSato, Y., Honda, Y., Kuno, H., & Oizumi, K. (1998) · Bone · doi:10.1016/s8756-3282(98)00108-2 · Cited by 77
RetractedSato, Y., Maruoka, H., & Oizumi, K. (1997) · Stroke · doi:10.1161/01.str.28.4.736 · Cited by 76
RetractedSato, Y., Fujimatsu, Y., Kikuyama, M., Kaji, M., & Oizumic, K. (1998) · Journal of the Neurological Sciences · doi:10.1016/s0022-510x(98)00041-0 · Cited by 76
RetractedIncreased Bone Resorption During the First Year After Stroke
Satō, Y., Kuno, H., Kaji, M., Ohshima, Y., Asoh, T., & Ōizumi, K. (1998) · Stroke · doi:10.1161/01.str.29.7.1373 · Cited by 73
RetractedVitamin D Deficiency and Risk of Hip Fractures Among Disabled Elderly Stroke Patients
Satō, Y., Asoh, T., Kondo, I., & Satoh, K. (2001) · Stroke · doi:10.1161/01.str.32.7.1673 · Cited by 68
RetractedSatō, Y., Honda, Y., Kunoh, H., & Ōizumi, K. (1997) · Stroke · doi:10.1161/01.str.28.12.2390 · Cited by 66
RetractedVitamin D Deficiency and Osteopenia in the Hemiplegic Limbs of Stroke Patients
Satō, Y., Maruoka, H., Ōizumi, K., & Kikuyama, M. (1996) · Stroke · doi:10.1161/01.str.27.12.2183 · Cited by 66
RetractedSatō, Y., Asoh, T., Kaji, M., & Ōizumi, K. (2000) · Journal of Bone and Mineral Research · doi:10.1359/jbmr.2000.15.12.2487 · Cited by 62
RetractedDevelopment of Osteopenia in the Hemiplegic Finger in Patients with Stroke
Sato, Y., Maruoka, H., Honda, Y., Asoh, T., Fujimatsu, Y., & Ōizumi, K. (2008) · European Neurology · doi:10.1159/000117272 · Cited by 52
RetractedSatō, Y., Metoki, N., Iwamoto, J., & Satoh, K. (2003) · Neurology · doi:10.1212/01.wnl.0000078892.24356.90 · Cited by 51
RetractedSatō, Y., Oizumi, K., Kuno, H., & Masahide, K. A. J. I. (1999) · Bone · doi:10.1016/s8756-3282(98)00185-9 · Cited by 43
RetractedSatō, Y., Kuno, H., Kaji, M., Saruwatari, N., & Oizumi, K. (1999) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/00002060-199909000-00008 · Cited by 37
RetractedSatō, Y., Kuno, H., Asoh, T., Honda, Y., & Oizumi, K. (1999) · Age and Ageing · doi:10.1093/ageing/28.3.265 · Cited by 36
RetractedSato, Y., Honda, Y., Iwamoto, J., Kanoko, T., & Satoh, K. (2005) · JAMA · doi:10.1001/jama.293.9.1082 · Cited by 2
RetractedHolick, M. F. (2007) · New England Journal of Medicine · doi:10.1056/nejmra070553 · Cited by 13,720
Glycemic durability of rosiglitazone, metformin, or glyburide monotherapy
Kahn, S. E., Haffner, S. M., Heise, M. A., Herman, W. H., Holman, R. R., Jones, N. P., Kravitz, B. G., Lachin, J. M., O'Neill, M. C., Zinman, B., et al. (2006) · New England Journal of Medicine · doi:10.1056/nejmoa066224 · Cited by 2,962
Guidelines for the Early Management of Adults With Ischemic Stroke
Adams, H. P., del Zoppo, G., Alberts, M. J., Bhatt, D. L., Brass, L. M., Furlan, A. J., Grubb, R. L., Higashida, R. T., Jauch, E. C., Kidwell, C. S., et al. (2007) · Stroke · doi:10.1161/strokeaha.107.181486 · Cited by 2,461
Risk Factors for Falls as a Cause of Hip Fracture in Women
Grisso, J. A., Kelsey, J. L., Strom, B. L., Ghiu, G. Y., Maislin, G., O’Brien, L. A., Hoffman, S., & Kaplan, F. S. (1991) · New England Journal of Medicine · doi:10.1056/nejm199105093241905 · Cited by 869
Homocysteine Levels and the Risk of Osteoporotic Fracture
van Meurs, J. B. J., Dhonukshe-Rutten, R. A. M., Pluijm, S. M. F., van der Klift, M., de Jonge, R., Lindemans, J. W., de Groot, C. P. G. M., Albert Hofman, D., Witteman, J. C. M., van Leeuwen, J. P. T. M., et al. (2004) · New England Journal of Medicine · doi:10.1056/nejmoa032546 · Cited by 740
Incidence and consequences offalls due to stroke: a systematic inquiry
Förster, A., & Young, J. (1995) · BMJ · doi:10.1136/bmj.311.6997.83 · Cited by 625
Higher Incidence of Falls in Long-Term Stroke Survivors Than in Population Controls
Jørgensen, L., Engstad, T. A., & Jacobsen, B. K. (2002) · Stroke · doi:10.1161/hs0202.102375 · Cited by 409
Dahlman, T. C. (1993) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(93)90378-v · Cited by 381
Calcium Homeostasis in Immobilization: An Example of Resorptive Hypercalciuria
Stewart, A. F., Adler, M., Byers, C. M., Segre, G. V., & Broadus, A. E. (1982) · New England Journal of Medicine · doi:10.1056/nejm198205133061903 · Cited by 377
Effect of antiepileptic drugs on bone density in ambulatory patients
Farhat, G., Yamout, B., Mikati, M. A., et al. (2002) · Neurology · doi:10.1212/wnl.58.9.1348 · Cited by 360
Monréal, M., Lafoz, E., Olivé, A., et al. (1994) · PubMed · Cited by 352
Ramnemark, A., Nyberg, L., Borssén, B., Olsson, T., & Gustafson, Y. (1998) · Osteoporosis International · doi:10.1007/s001980050053 · Cited by 317
Effect of carbamazepine and valproate on bone mineral density
Sheth, R. D., Wesolowski, C. A., Jacob, J., Penney, S., Hobbs, G. R., Riggs, J. E., & Bodensteiner, J. B. (1995) · The Journal of Pediatrics · doi:10.1016/s0022-3476(95)70304-7 · Cited by 292
Pettilä, V., Leinonen, P. J., Markkola, A. T., Hiilesmaa, V. K., & Kaaja, R. (2002) · Thrombosis and Haemostasis · doi:10.1055/s-0037-1612970 · Cited by 274
A prospective study of heparin-induced osteoporosis in pregnancy using bone densitometry
Barbour, L. A., Kick, S. D., Steiner, J. F., et al. (1994) · American Journal of Obstetrics and Gynecology · doi:10.1016/s0002-9378(94)70299-3 · Cited by 274
Serum undercarboxylated osteocalcin correlates with hip bone mineral density in elderly women
Szulc, P., ARLOT, M. E., Chapuy, M. C., Duboeuf, F., Meunier, P. J., & Delmas, P. D. (1994) · Journal of Bone and Mineral Research · doi:10.1002/jbmr.5650091012 · Cited by 268
Acute and Long-Term Increase in Fracture Risk After Hospitalization for Stroke
Kanis, J. А., Odén, A., & Johnell, O. (2001) · Stroke · doi:10.1161/01.str.32.3.702 · Cited by 264
Stroke, a Major and Increasing Risk Factor for Femoral Neck Fracture
Ramnemark, A., Nilsson, M., Borssén, B., et al. (2000) · Stroke · doi:10.1161/01.str.31.7.1572 · Cited by 256
Role of Vitamin K in Bone Metabolism
Vermeer, C., Jie, K. G., & Knapen, M. H. J. (1995) · Annual Review of Nutrition · doi:10.1146/annurev.nu.15.070195.000245 · Cited by 238
Antiepileptic Drug–Induced Bone Loss in Young Male Patients Who Have Seizures
Andress, D. L. (2002) · Archives of Neurology · doi:10.1001/archneur.59.5.781 · Cited by 207
Jørgensen, L., & Jacobsen, B. K. (2001) · Bone · doi:10.1016/s8756-3282(01)00434-3 · Cited by 204
Dennis, M. S., Lo, K. M., McDowall, M., & West, T. A. (2002) · Stroke · doi:10.1161/hs0302.103621 · Cited by 197
Välimäki, M., Tiihonen, M., Laitinen, K., et al. (1994) · Journal of Bone and Mineral Research · doi:10.1002/jbmr.5650090507 · Cited by 179
Jørgensen, L., Crabtree, N. J., REEVE, J., & Jacobsen, B. K. (2000) · Bone · doi:10.1016/s8756-3282(00)00374-4 · Cited by 176
Jørgensen, L., Jacobsen, B. K., Wilsgaard, T., & Magnus, J. H. (2000) · Osteoporosis International · doi:10.1007/s001980070103 · Cited by 171
Falls, Fractures, and Osteoporosis After Stroke
Poole, K. E. S., REEVE, J., & Warburton, E. A. (2002) · Stroke · doi:10.1161/01.str.0000014510.48897.7d · Cited by 157
Ramnemark, A., Nyberg, L., Lorentzon, R., et al. (1999) · Osteoporosis International · doi:10.1007/s001980050147 · Cited by 157
Thiazolidinedione Treatment Decreases Bone Mineral Density in Type 2 Diabetic Men
Yaturu, S., Bryant, B., & Jain, S. K. (2007) · Diabetes Care · doi:10.2337/dc06-2606 · Cited by 155
Immobilization osteoporosis: a review
MINAIRE, P. M. (1989) · Clinical Rheumatology · doi:10.1007/bf02207242 · Cited by 139
Forearm bone loss in hemiplegia: A model for the study of immobilization osteoporosis
Prince, R. L., Price, R. I., & Ho, S. (1988) · Journal of Bone and Mineral Research · doi:10.1002/jbmr.5650030309 · Cited by 129
Bone mineral density during long-term prophylaxis with heparin in pregnancy
Dahlman, T. C., Sjöberg, H. E., & Ringertz, H. G. (1994) · American Journal of Obstetrics and Gynecology · doi:10.1016/s0002-9378(94)70149-0 · Cited by 122
Hemiosteoporosis After Severe Stroke, Independent of Changes in Body Composition and Weight
Ramnemark, A., Nyberg, L., Lorentzon, R., et al. (1999) · Stroke · doi:10.1161/01.str.30.4.755 · Cited by 109
Pang, M. Y. C., Eng, J. J., McKay, H. A., & Dawson, A. S. (2005) · Osteoporosis International · doi:10.1007/s00198-005-1925-1 · Cited by 99
Frotzler, A., Berger, M. F., Knecht, H., & Eser, P. (2008) · Bone · doi:10.1016/j.bone.2008.05.006 · Cited by 97
Determinants of bone mineral density in immobilization: A study on hemiplegic patients
del Puente, A., Pappone, N., Mandes, M. G., Mantova, D., Scarpa, R., & Oriente, P. (1996) · Osteoporosis International · doi:10.1007/bf01626538 · Cited by 87
Pang, M. Y. C., Ashe, M. C., & Eng, J. J. (2007) · Osteoporosis International · doi:10.1007/s00198-007-0372-6 · Cited by 85
LONG-TERM EFFECTS OF STROKES ON BONE MASS
Hamdy, R. C., Moore, S. W., Cancellaro, V. A., et al. (1995) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/00002060-199509000-00006 · Cited by 78
Decreased axial and peripheral bone density in patients taking long-term warfarin
Philip, W., Martin, J. C., RICHARDSON, J. M., Reid, D. M., WEBSTER, J., & Douglas, A. S. (1995) · QJM · doi:10.1093/oxfordjournals.qjmed.a069112 · Cited by 76
A prospective study on hip fractures in patients with previous cerebrovascular accidents
Chiu, P., Pun, W.-K., Luk, K. D. K., et al. (1992) · Injury · doi:10.1016/0020-1383(92)90171-n · Cited by 75
Pang, M. Y. C., Ashe, M. C., Eng, J. J., McKay, H. A., & Dawson, A. S. (2006) · Osteoporosis International · doi:10.1007/s00198-006-0168-0 · Cited by 68
Pang, M. Y. C., & Eng, J. J. (2005) · Bone · doi:10.1016/j.bone.2005.03.009 · Cited by 68
The effect of hemiplegia on bone mass and soft tissue body composition
Iversen, E., Hassager, C., & Christiansen, C. B. (1989) · Acta Neurologica Scandinavica · doi:10.1111/j.1600-0404.1989.tb03729.x · Cited by 68
Bone density changes in women who receive thromboprophylaxis in pregnancy
Casele, H. L., Haney, E. I., James, A., Rosene‐Montella, K., & Carson, M. (2006) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2006.06.080 · Cited by 66
A Single Infusion of Zoledronate Prevents Bone Loss After Stroke
Poole, K. E. S., Loveridge, N., Rose, C. M., Warburton, E. A., & REEVE, J. (2007) · Stroke · doi:10.1161/strokeaha.106.474262 · Cited by 63
CHANGES IN BONE MINERAL CONTENT AND DENSITY AFTER STROKE
Hamdy, R. C., Krishnaswamy, G. A., Cancellaro, V. A., Whalen, K., & Harvill, L. M. (1993) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/00002060-199308000-00003 · Cited by 61
Bone mineral density in patients with stroke
Yavuzer, G., ATAMAN, E., r, N. S. L., et al. (2002) · International Journal of Rehabilitation Research · doi:10.1097/00004356-200209000-00010 · Cited by 57
Osteoporosis in hemiplegic stroke patients as studied with dual-energy x-ray absorptiometry
Liu, M., Tsuji, T., Higuchi, Y., et al. (1999) · Archives of Physical Medicine and Rehabilitation · doi:10.1016/s0003-9993(99)90019-9 · Cited by 57
Alterations of bone mineral density of the femurs in hemiplegia
Takamoto, S., Masuyama, T., Nakajima, M., et al. (1995) · Calcified Tissue International · doi:10.1007/bf00318043 · Cited by 56
Key characteristics of walking correlate with bone density in individuals with chronic stroke
Worthen‐Chaudhari, L., Kim, C. M., Kautz, S. A., Lew, H. L., Kiratli, B. J., & Beaupré, G. S. (2005) · The Journal of Rehabilitation Research and Development · doi:10.1682/jrrd.2005.02.0036 · Cited by 56
Λαζούρα, Ό., Groumas, N., Antoniadou, E., et al. (2008) · Journal of Clinical Densitometry · doi:10.1016/j.jocd.2008.05.097 · Cited by 53
Jørgensen, L., & Jacobsen, B. K. (2001) · Calcified Tissue International · doi:10.1007/bf02684997 · Cited by 53
The recovery of walking ability and subclassification of stroke
Baer, G. D., & Smith, M. (2001) · Physiotherapy Research International · doi:10.1002/pri.222 · Cited by 48
Vitamin D Deficiency and Osteoporosis in Rehabilitation Inpatients
Shinchuk, L. M., Morse, L. R., Huancahuari, N., Arum, S., Chen, T. C., & Holick, M. F. (2006) · Archives of Physical Medicine and Rehabilitation · doi:10.1016/j.apmr.2006.03.009 · Cited by 43
Risk of Fractures after Stroke
Brown, D. L., Morgenstern, L. B., Majersik, J. J., Kleerekoper, M., & Lisabeth, L. D. (2007) · Cerebrovascular Diseases · doi:10.1159/000111997 · Cited by 40
Adding Injury to Insult: Fracture Risk After Stroke in Veterans
Whitson, H. E., Pieper, C. F., Sanders, L. L., et al. (2006) · Journal of the American Geriatrics Society · doi:10.1111/j.1532-5415.2006.00769.x · Cited by 39
Pang, M. Y. C., Ashe, M. C., & Eng, J. J. (2008) · Journal of Bone and Mineral Research · doi:10.1359/jbmr.080224 · Cited by 38
UNILATERAL OSTEOPOROSIS IN LONGSTANDING HEMIPLEGIA IN THE ELDERLY
HODKINSON, H. M., & BRAIN, A. T. (1967) · Journal of the American Geriatrics Society · doi:10.1111/j.1532-5415.1967.tb05337.x · Cited by 33
Prevention of Secondary Osteoporosis Postmenopause in Hemiplegia
Ikai, T., Uematsu, M., Eun, S. S., et al. (2001) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/00002060-200103000-00003 · Cited by 30
Rapid long-term bone loss following stroke in a man with osteoporosis and atherosclerosis
Poole, K. E. S., Warburton, E. A., & REEVE, J. (2004) · Osteoporosis International · doi:10.1007/s00198-004-1682-6 · Cited by 26
An assessment of osteoporosis in stroke patients on rehabilitation admission
Watanabe, Y. C. (2004) · International Journal of Rehabilitation Research · doi:10.1097/01.mrr.0000128062.38817.77 · Cited by 25
A study of bone densitometry in patients with complex regional pain syndrome after stroke
Kumar, V., Kalita, J., Gujral, R. B., et al. (2001) · Postgraduate Medical Journal · doi:10.1136/pmj.77.910.519 · Cited by 25
Bainbridge, N. J., Davie, M. W. J., & Haddaway, M. J. (2006) · Age and Ageing · doi:10.1093/ageing/afj045 · Cited by 25
Increased Bone Resorption in the Proximal Femur in Patients with Hemiplegia
Levendoğlu, F., Uğurlu, H., Gürbîlek, M., Akkurt, H. E., & Karagözolu, E. (2004) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/01.phm.0000140802.91648.57 · Cited by 23
BONE MINERAL DENSITY OF METATARSUS IN HEMIPLEGIC SUBJECTS1
Iwamoto, J., Tsukimura, T., & Takeda, T. (1999) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/00002060-199905000-00002 · Cited by 23
Prevalence of pre-stroke low bone mineral density and vertebral fracture in first stroke patients
Kim, H. W., Kang, E. Y., Im, S., et al. (2008) · Bone · doi:10.1016/j.bone.2008.02.016 · Cited by 19
Bone Mineral Density in Patients with Stroke
Şahi̇n, L., Özoran, K., Gündüz, O. H., et al. (2001) · American Journal of Physical Medicine & Rehabilitation · doi:10.1097/00002060-200108000-00009 · Cited by 19
Role of the Parathyroid Gland on Bone Mass and Metabolism in Immobilized Stroke Patients.
Fujimatsu, Y. (1998) · The Kurume Medical Journal · doi:10.2739/kurumemedj.45.265 · Cited by 11
Vitamin D Status and Nonhemiplegic Bone Mass in Patients Following Stroke.
Kuno, H. (1998) · The Kurume Medical Journal · doi:10.2739/kurumemedj.45.257 · Cited by 9
Complications of Hemiplegia in Cerebrovascular Disease
WING, H., & Leavitt, L. A. (1961) · Southern Medical Journal · doi:10.1097/00007611-196106000-00005 · Cited by 7
Uebelhart, D., Hartmann, D. J., Barbezat, S., Mermillod, B., & Chantraine, A. (1999) · Clinical Rehabilitation · doi:10.1191/026921599672302142 · Cited by 5
Cheng, H. Y. (2006) · Archives of Internal Medicine · doi:10.1001/archinte.166.14.1525-a · Cited by 1
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“…been cited 346 times, including September 2018, and it references four of the six above-mentioned affected trial reports, with these reports being the sole sources of data evidencing the reduction in fractures from bisphosphonates in patients with Parkinson’s disease, Alzheimer’s disease or stroke.”
Background
Metadata
- Authors
- Carda, S., Cisari, C., Invernizzi, M., & Bevilacqua, M.
- Affiliations
- Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT)
- University of Milan (IT)
- Venue
- Cerebrovascular Diseases
- Publisher
- S. Karger AG
- Published
- 2009
- Volume
- 28
- Issue
- 2
- Pages
- 191-200
- ISSN
- 1015-9770 (ISSN-L)
- 1421-9786
- OpenAlex
- W2085742735
- Cited by
- 104
- References
- 87
- Citations by year
- 2026: 3 · 2025: 7 · 2024: 12 · 2023: 6 · 2022: 13 · 2021: 7 · 2020: 7 · 2019: 7 · 2018: 4 · 2017: 7 · 2016: 6 · 2015: 3 · 2014: 5 · 2013: 3 · 2012: 1
- FWCI
- 4.54
- Type
- journal article
- Language
- en
- Status
- Retracted
- Update notices
- retraction (2009-06-30)
- Open access
- bronze
- doi.org
- Locations
- Cerebrovascular Diseases (publishedVersion)
- PubMed (publishedVersion)
- INFM-OAR (INFN Catania) (submittedVersion, other-oa)
- Topics
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
- Health Sciences › Medicine › Rehabilitation › Stroke Rehabilitation and Recovery
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
- Keywords
- stroke, bone loss, hip fracture, paresis, immobilization, gait disability, bone mass, pathogenesis, osteoporosis treatment, dietary factors, iatrogenic factors
- MeSH terms
- Stroke Rehabilitation, Combined Modality Therapy, Female, Humans, Male, Osteoporosis, Risk Factors, Bone Density, Treatment Outcome, Risk Assessment, Stroke
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