Skip to main content
Erschienen in: Calcified Tissue International 3/2009

01.03.2009

Medial-to-Lateral Ratio of Tibiofemoral Subchondral Bone Area is Adapted to Alignment and Mechanical Load

verfasst von: Felix Eckstein, Martin Hudelmaier, September Cahue, Meredith Marshall, Leena Sharma

Erschienen in: Calcified Tissue International | Ausgabe 3/2009

Einloggen, um Zugang zu erhalten

Abstract

Malalignment is known to affect the medial-to-lateral load distribution in the tibiofemoral joint. In this longitudinal study, we test the hypothesis that subchondral bone surface areas functionally adapt to the load distribution in malaligned knees. Alignment (hip–knee–ankle angle) was measured from full limb films in 174 participants with knee osteoarthritis. Coronal magnetic resonance images were acquired at baseline and 26.6 ± 5.4 months later. The subchondral bone surface area of the weight-bearing tibiofemoral cartilages was segmented, with readers blinded to the order of acquisition. The size of the subchondral bone surface areas was computed after triangulation by proprietary software. The hip–knee–ankle angle showed a significant correlation with the tibial (r 2 = 0.25, P < 0.0001) and femoral (r 2 = 0.07, P < 0.001) ratio of medial-to-lateral subchondral bone surface area. In the tibia, the ratio was significantly different between varus (1.28:1), neutral (1.18:1), and valgus (1.13:1) knees (analysis of variance [ANOVA]; P < 0.00001). Similar observations were made in the weight-bearing femur (0.94:1 in neutral, 0.97.1 in varus, 0.91:1 in valgus knees; ANOVA P = 0.018). The annualized longitudinal increase in subchondral bone surface area was significant (P < 0.05) in the medial tibia (+0.13%), medial femur (+0.26%), and lateral tibia (+0.19%). In the medial femur, the change between baseline and follow-up was significantly different (ANOVA; P = 0.020) between neutral, varus, and valgus knees, with the increase in surface area being significantly greater (P = 0.019) in varus than in neutral knees. Tibiofemoral subchondral bone surface areas are shown to be functionally adapted to the medial-to-lateral load distribution. The longitudinal findings indicate that this adaptational process may continue to take place at advanced age.
Literatur
1.
Zurück zum Zitat Carter DR, Wong M, Orr TE (1991) Musculoskeletal ontogeny, phylogeny, and functional adaptation. J Biomech 24(suppl 1):3–16PubMedCrossRef Carter DR, Wong M, Orr TE (1991) Musculoskeletal ontogeny, phylogeny, and functional adaptation. J Biomech 24(suppl 1):3–16PubMedCrossRef
2.
Zurück zum Zitat Darwin C (1872) The origin of species. New American Library, New York Darwin C (1872) The origin of species. New American Library, New York
3.
Zurück zum Zitat Lamarck JB (1809) Philosophie zoologique. Baillere, Paris Lamarck JB (1809) Philosophie zoologique. Baillere, Paris
4.
Zurück zum Zitat Roux W (1881) Der Kampf der Teile im Organismus. Engelmann, Leipzig Roux W (1881) Der Kampf der Teile im Organismus. Engelmann, Leipzig
5.
Zurück zum Zitat Wolff J (1892) Das Gesetz der Transformation der Knochen. Hirschwald, Berlin Wolff J (1892) Das Gesetz der Transformation der Knochen. Hirschwald, Berlin
6.
Zurück zum Zitat Booth FW (1994) Terrestrial applications of bone and muscle research in microgravity. Adv Space Res 14:373–376PubMedCrossRef Booth FW (1994) Terrestrial applications of bone and muscle research in microgravity. Adv Space Res 14:373–376PubMedCrossRef
7.
Zurück zum Zitat Keller TS, Strauss AM, Szpalski M (1992) Prevention of bone loss and muscle atrophy during manned space flight. Microgravity Q 2:89–102PubMed Keller TS, Strauss AM, Szpalski M (1992) Prevention of bone loss and muscle atrophy during manned space flight. Microgravity Q 2:89–102PubMed
8.
Zurück zum Zitat Huiskes R, Ruimerman R, van Lenthe GH, Janssen JD (2000) Effects of mechanical forces on maintenance and adaptation of form in trabecular bone. Nature 405:704–706PubMedCrossRef Huiskes R, Ruimerman R, van Lenthe GH, Janssen JD (2000) Effects of mechanical forces on maintenance and adaptation of form in trabecular bone. Nature 405:704–706PubMedCrossRef
9.
Zurück zum Zitat Andriacchi TP (1994) Dynamics of knee malalignment. Orthop Clin North Am 25:395–403PubMed Andriacchi TP (1994) Dynamics of knee malalignment. Orthop Clin North Am 25:395–403PubMed
10.
Zurück zum Zitat Cooke TD, Sled EA, Scudamore RA (2007) Frontal plane knee alignment: a call for standardized measurement. J Rheumatol 34:1796–1801PubMed Cooke TD, Sled EA, Scudamore RA (2007) Frontal plane knee alignment: a call for standardized measurement. J Rheumatol 34:1796–1801PubMed
11.
Zurück zum Zitat Johnson F, Leitl S, Waugh W (1980) The distribution of load across the knee. A comparison of static and dynamic measurements. J Bone Joint Surg Br 62:346–349PubMed Johnson F, Leitl S, Waugh W (1980) The distribution of load across the knee. A comparison of static and dynamic measurements. J Bone Joint Surg Br 62:346–349PubMed
12.
Zurück zum Zitat Maquet P (1979) Mechanics and osteoarthritis of the patellofemoral joint. Clin Orthop Relat Res 144:70–73 Maquet P (1979) Mechanics and osteoarthritis of the patellofemoral joint. Clin Orthop Relat Res 144:70–73
13.
Zurück zum Zitat Morrison JB (1970) The mechanics of the knee joint in relation to normal walking. J Biomech 3:51–61PubMedCrossRef Morrison JB (1970) The mechanics of the knee joint in relation to normal walking. J Biomech 3:51–61PubMedCrossRef
14.
Zurück zum Zitat Tetsworth K, Paley D (1994) Malalignment and degenerative arthropathy. Orthop Clin North Am 25:367–377PubMed Tetsworth K, Paley D (1994) Malalignment and degenerative arthropathy. Orthop Clin North Am 25:367–377PubMed
15.
Zurück zum Zitat Hurwitz DE, Sumner DR, Andriacchi TP, Sugar DA (1998) Dynamic knee loads during gait predict proximal tibial bone distribution. J Biomech 31:423–430PubMedCrossRef Hurwitz DE, Sumner DR, Andriacchi TP, Sugar DA (1998) Dynamic knee loads during gait predict proximal tibial bone distribution. J Biomech 31:423–430PubMedCrossRef
16.
Zurück zum Zitat Müller-Gerbl M (1998) The subchondral bone plate. Adv Anat Embryol Cell Biol 141:III–XI, 1–134 Müller-Gerbl M (1998) The subchondral bone plate. Adv Anat Embryol Cell Biol 141:III–XI, 1–134
17.
Zurück zum Zitat Thorp LE, Wimmer MA, Block JA, Moisio KC, Shott S, Goker B, Sumner DR (2006) Bone mineral density in the proximal tibia varies as a function of static alignment and knee adduction angular momentum in individuals with medial knee osteoarthritis. Bone 39:1116–1122PubMedCrossRef Thorp LE, Wimmer MA, Block JA, Moisio KC, Shott S, Goker B, Sumner DR (2006) Bone mineral density in the proximal tibia varies as a function of static alignment and knee adduction angular momentum in individuals with medial knee osteoarthritis. Bone 39:1116–1122PubMedCrossRef
18.
Zurück zum Zitat Lieberman DE, Devlin MJ, Pearson OM (2001) Articular area responses to mechanical loading: effects of exercise, age, and skeletal location. Am J Phys Anthropol 116:266–277PubMedCrossRef Lieberman DE, Devlin MJ, Pearson OM (2001) Articular area responses to mechanical loading: effects of exercise, age, and skeletal location. Am J Phys Anthropol 116:266–277PubMedCrossRef
19.
Zurück zum Zitat Plochocki JH, Riscigno CJ, Garcia M (2006) Functional adaptation of the femoral head to voluntary exercise. Anat Rec A Discov Mol Cell Evol Biol 288:776–781PubMed Plochocki JH, Riscigno CJ, Garcia M (2006) Functional adaptation of the femoral head to voluntary exercise. Anat Rec A Discov Mol Cell Evol Biol 288:776–781PubMed
20.
Zurück zum Zitat Plochocki JH (2004) Bilateral variation in limb articular surface dimensions. Am J Hum Biol 16:328–333PubMedCrossRef Plochocki JH (2004) Bilateral variation in limb articular surface dimensions. Am J Hum Biol 16:328–333PubMedCrossRef
21.
Zurück zum Zitat Lazenby RA, Cooper DM, Angus S, Hallgrimsson B (2008) Articular constraint, handedness, and directional asymmetry in the human second metacarpal. J Hum Evol 54:875–885PubMedCrossRef Lazenby RA, Cooper DM, Angus S, Hallgrimsson B (2008) Articular constraint, handedness, and directional asymmetry in the human second metacarpal. J Hum Evol 54:875–885PubMedCrossRef
22.
Zurück zum Zitat Eckstein F, Faber S, Muhlbauer R, Hohe J, Englmeier KH, Reiser M, Putz R (2002) Functional adaptation of human joints to mechanical stimuli. Osteoarthritis Cartilage 10:44–50PubMedCrossRef Eckstein F, Faber S, Muhlbauer R, Hohe J, Englmeier KH, Reiser M, Putz R (2002) Functional adaptation of human joints to mechanical stimuli. Osteoarthritis Cartilage 10:44–50PubMedCrossRef
23.
Zurück zum Zitat Buckland WrightC (1995) Protocols for precise radio-anatomical positioning of the tibiofemoral and patellofemoral compartments of the knee. Osteoarthritis Cartilage 3(suppl A):71–80 Buckland WrightC (1995) Protocols for precise radio-anatomical positioning of the tibiofemoral and patellofemoral compartments of the knee. Osteoarthritis Cartilage 3(suppl A):71–80
24.
Zurück zum Zitat Moreland JR, Bassett LW, Hanker GJ (1987) Radiographic analysis of the axial alignment of the lower extremity. J Bone Joint Surg Am 69:745–749PubMed Moreland JR, Bassett LW, Hanker GJ (1987) Radiographic analysis of the axial alignment of the lower extremity. J Bone Joint Surg Am 69:745–749PubMed
25.
Zurück zum Zitat Eckstein F, Burstein D, Link TM (2006) Quantitative MRI of cartilage and bone: degenerative changes in osteoarthritis. NMR Biomed 19:822–854PubMedCrossRef Eckstein F, Burstein D, Link TM (2006) Quantitative MRI of cartilage and bone: degenerative changes in osteoarthritis. NMR Biomed 19:822–854PubMedCrossRef
26.
Zurück zum Zitat Eckstein F, Charles HC, Buck RJ, Kraus VB, Remmers AE, Hudelmaier M, Wirth W, Evelhoch JL (2005) Accuracy and precision of quantitative assessment of cartilage morphology by magnetic resonance imaging at 3.0T. Arthritis Rheum 52:3132–3136PubMedCrossRef Eckstein F, Charles HC, Buck RJ, Kraus VB, Remmers AE, Hudelmaier M, Wirth W, Evelhoch JL (2005) Accuracy and precision of quantitative assessment of cartilage morphology by magnetic resonance imaging at 3.0T. Arthritis Rheum 52:3132–3136PubMedCrossRef
27.
Zurück zum Zitat Eckstein F, Cicuttini F, Raynauld JP, Waterton JC, Peterfy C (2006) Magnetic resonance imaging (MRI) of articular cartilage in knee osteoarthritis (OA): morphological assessment. Osteoarthritis Cartilage 14(suppl 1):46–75CrossRef Eckstein F, Cicuttini F, Raynauld JP, Waterton JC, Peterfy C (2006) Magnetic resonance imaging (MRI) of articular cartilage in knee osteoarthritis (OA): morphological assessment. Osteoarthritis Cartilage 14(suppl 1):46–75CrossRef
28.
Zurück zum Zitat Graichen H, Eisenhart-Rothe R, Vogl T, Englmeier KH, Eckstein F (2004) Quantitative assessment of cartilage status in osteoarthritis by quantitative magnetic resonance imaging: technical validation for use in analysis of cartilage volume and further morphologic parameters. Arthritis Rheum 50:811–816PubMedCrossRef Graichen H, Eisenhart-Rothe R, Vogl T, Englmeier KH, Eckstein F (2004) Quantitative assessment of cartilage status in osteoarthritis by quantitative magnetic resonance imaging: technical validation for use in analysis of cartilage volume and further morphologic parameters. Arthritis Rheum 50:811–816PubMedCrossRef
29.
Zurück zum Zitat Eckstein F, Ateshian G, Burgkart R, Burstein D, Cicuttini F, Dardzinski B, Gray M, Link TM, Majumdar S, Mosher T, Peterfy C, Totterman S, Waterton J, Winalski CS, Felson D (2006) Proposal for a nomenclature for magnetic resonance imaging based measures of articular cartilage in osteoarthritis. Osteoarthritis Cartilage 14:974–983PubMedCrossRef Eckstein F, Ateshian G, Burgkart R, Burstein D, Cicuttini F, Dardzinski B, Gray M, Link TM, Majumdar S, Mosher T, Peterfy C, Totterman S, Waterton J, Winalski CS, Felson D (2006) Proposal for a nomenclature for magnetic resonance imaging based measures of articular cartilage in osteoarthritis. Osteoarthritis Cartilage 14:974–983PubMedCrossRef
30.
Zurück zum Zitat Eckstein F, Hudelmaier M, Wirth W, Kiefer B, Jackson R, Yu J, Eaton CB, Schneider E (2006) Double echo steady state magnetic resonance imaging of knee articular cartilage at 3 Tesla: a pilot study for the Osteoarthritis Initiative. Ann Rheum Dis 65:433–441PubMedCrossRef Eckstein F, Hudelmaier M, Wirth W, Kiefer B, Jackson R, Yu J, Eaton CB, Schneider E (2006) Double echo steady state magnetic resonance imaging of knee articular cartilage at 3 Tesla: a pilot study for the Osteoarthritis Initiative. Ann Rheum Dis 65:433–441PubMedCrossRef
31.
Zurück zum Zitat Eckstein F, Kunz M, Hudelmaier M, Jackson R, Yu J, Eaton CB, Schneider E (2007) Impact of coil design on the contrast-to-noise ratio, precision, and consistency of quantitative cartilage morphometry at 3 Tesla: a pilot study for the osteoarthritis initiative. Magn Reson Med 57:448–454PubMedCrossRef Eckstein F, Kunz M, Hudelmaier M, Jackson R, Yu J, Eaton CB, Schneider E (2007) Impact of coil design on the contrast-to-noise ratio, precision, and consistency of quantitative cartilage morphometry at 3 Tesla: a pilot study for the osteoarthritis initiative. Magn Reson Med 57:448–454PubMedCrossRef
32.
Zurück zum Zitat Burgkart R, Glaser C, Hyhlik-Durr A, Englmeier KH, Reiser M, Eckstein F (2001) Magnetic resonance imaging-based assessment of cartilage loss in severe osteoarthritis: accuracy, precision, and diagnostic value. Arthritis Rheum 44:2072–2077PubMedCrossRef Burgkart R, Glaser C, Hyhlik-Durr A, Englmeier KH, Reiser M, Eckstein F (2001) Magnetic resonance imaging-based assessment of cartilage loss in severe osteoarthritis: accuracy, precision, and diagnostic value. Arthritis Rheum 44:2072–2077PubMedCrossRef
33.
Zurück zum Zitat Burgkart R, Glaser C, Hinterwimmer S, Hudelmaier M, Englmeier KH, Reiser M, Eckstein F (2003) Feasibility of T and Z scores from magnetic resonance imaging data for quantification of cartilage loss in osteoarthritis. Arthritis Rheum 48:2829–2835PubMedCrossRef Burgkart R, Glaser C, Hinterwimmer S, Hudelmaier M, Englmeier KH, Reiser M, Eckstein F (2003) Feasibility of T and Z scores from magnetic resonance imaging data for quantification of cartilage loss in osteoarthritis. Arthritis Rheum 48:2829–2835PubMedCrossRef
34.
Zurück zum Zitat Glaser C, Burgkart R, Kutschera A, Englmeier KH, Reiser M, Eckstein F (2003) Femoro-tibial cartilage metrics from coronal MR image data: technique, test–retest reproducibility, and findings in osteoarthritis. Magn Reson Med 50:1229–1236PubMedCrossRef Glaser C, Burgkart R, Kutschera A, Englmeier KH, Reiser M, Eckstein F (2003) Femoro-tibial cartilage metrics from coronal MR image data: technique, test–retest reproducibility, and findings in osteoarthritis. Magn Reson Med 50:1229–1236PubMedCrossRef
35.
Zurück zum Zitat Miyazaki T, Wada M, Kawahara H, Sato M, Baba H, Shimada S (2002) Dynamic load at baseline can predict radiographic disease progression in medial compartment knee osteoarthritis. Ann Rheum Dis 61:617–622PubMedCrossRef Miyazaki T, Wada M, Kawahara H, Sato M, Baba H, Shimada S (2002) Dynamic load at baseline can predict radiographic disease progression in medial compartment knee osteoarthritis. Ann Rheum Dis 61:617–622PubMedCrossRef
36.
Zurück zum Zitat Hurwitz DE, Ryals AB, Case JP, Block JA, Andriacchi TP (2002) The knee adduction moment during gait in subjects with knee osteoarthritis is more closely correlated with static alignment than radiographic disease severity, toe out angle and pain. J Orthop Res 20:101–107PubMedCrossRef Hurwitz DE, Ryals AB, Case JP, Block JA, Andriacchi TP (2002) The knee adduction moment during gait in subjects with knee osteoarthritis is more closely correlated with static alignment than radiographic disease severity, toe out angle and pain. J Orthop Res 20:101–107PubMedCrossRef
37.
Zurück zum Zitat Jones G, Ding C, Scott F, Glisson M, Cicuttini F (2004) Early radiographic osteoarthritis is associated with substantial changes in cartilage volume and tibial bone surface area in both males and females. Osteoarthritis Cartilage 12:169–174PubMedCrossRef Jones G, Ding C, Scott F, Glisson M, Cicuttini F (2004) Early radiographic osteoarthritis is associated with substantial changes in cartilage volume and tibial bone surface area in both males and females. Osteoarthritis Cartilage 12:169–174PubMedCrossRef
38.
Zurück zum Zitat Wang Y, Wluka AE, Cicuttini FM (2005) The determinants of change in tibial plateau bone area in osteoarthritic knees: a cohort study. Arthritis Res Ther 7:R687–R693PubMedCrossRef Wang Y, Wluka AE, Cicuttini FM (2005) The determinants of change in tibial plateau bone area in osteoarthritic knees: a cohort study. Arthritis Res Ther 7:R687–R693PubMedCrossRef
39.
Zurück zum Zitat Wang Y, Ding C, Wluka AE, Davis S, Ebeling PR, Jones G, Cicuttini FM (2006) Factors affecting progression of knee cartilage defects in normal subjects over 2 years. Rheumatology (Oxford) 45:79–84CrossRef Wang Y, Ding C, Wluka AE, Davis S, Ebeling PR, Jones G, Cicuttini FM (2006) Factors affecting progression of knee cartilage defects in normal subjects over 2 years. Rheumatology (Oxford) 45:79–84CrossRef
40.
Zurück zum Zitat Eckstein F, Buck RJ, Burstein D, Charles HC, Crim J, Hudelmaier M, Hunter D, Hutchins G, Jackson C, Byers Kraus V, Lane NE, Link TM, Majumdar S, Mazzuca S, Prasad PV, Schnitzer TJ, Taljanovic MS, Vaz A, Wyman B, Hellio Le Graverand MP (2008) Precision of 3.0 Tesla quantitative magnetic resonance imaging of cartilage morphology in a multi center clinical trial. Ann Rheum Dis 67:1683–1688 Eckstein F, Buck RJ, Burstein D, Charles HC, Crim J, Hudelmaier M, Hunter D, Hutchins G, Jackson C, Byers Kraus V, Lane NE, Link TM, Majumdar S, Mazzuca S, Prasad PV, Schnitzer TJ, Taljanovic MS, Vaz A, Wyman B, Hellio Le Graverand MP (2008) Precision of 3.0 Tesla quantitative magnetic resonance imaging of cartilage morphology in a multi center clinical trial. Ann Rheum Dis 67:1683–1688
41.
Zurück zum Zitat Sigurdsson G, Aspelund T, Chang M, Jonsdottir B, Sigurdsson S, Eiriksdottir G, Gudmundsson A, Harris TB, Gudnason V, Lang TF (2006) Increasing sex difference in bone strength in old age: The Age, Gene/Environment Susceptibility—Reykjavik study (AGES-REYKJAVIK). Bone 39:644–651PubMedCrossRef Sigurdsson G, Aspelund T, Chang M, Jonsdottir B, Sigurdsson S, Eiriksdottir G, Gudmundsson A, Harris TB, Gudnason V, Lang TF (2006) Increasing sex difference in bone strength in old age: The Age, Gene/Environment Susceptibility—Reykjavik study (AGES-REYKJAVIK). Bone 39:644–651PubMedCrossRef
42.
Zurück zum Zitat Riggs BL, Melton ILIII, Robb RA, Camp JJ, Atkinson EJ, Peterson JM, Rouleau PA, McCollough CH, Bouxsein ML, Khosla S (2004) Population-based study of age and sex differences in bone volumetric density, size, geometry, and structure at different skeletal sites. J Bone Miner Res 19:1945–1954PubMedCrossRef Riggs BL, Melton ILIII, Robb RA, Camp JJ, Atkinson EJ, Peterson JM, Rouleau PA, McCollough CH, Bouxsein ML, Khosla S (2004) Population-based study of age and sex differences in bone volumetric density, size, geometry, and structure at different skeletal sites. J Bone Miner Res 19:1945–1954PubMedCrossRef
43.
Zurück zum Zitat Wluka AE, Wang Y, Davis SR, Cicuttini FM (2005) Tibial plateau size is related to grade of joint space narrowing and osteophytes in healthy women and in women with osteoarthritis. Ann Rheum Dis 64:1033–1037PubMedCrossRef Wluka AE, Wang Y, Davis SR, Cicuttini FM (2005) Tibial plateau size is related to grade of joint space narrowing and osteophytes in healthy women and in women with osteoarthritis. Ann Rheum Dis 64:1033–1037PubMedCrossRef
44.
Zurück zum Zitat Zhai G, Ding C, Cicuttini F, Jones G (2007) A longitudinal study of the association between knee alignment and change in cartilage volume and chondral defects in a largely non-osteoarthritic population. J Rheumatol 34:181–186PubMed Zhai G, Ding C, Cicuttini F, Jones G (2007) A longitudinal study of the association between knee alignment and change in cartilage volume and chondral defects in a largely non-osteoarthritic population. J Rheumatol 34:181–186PubMed
45.
Zurück zum Zitat Hunter DJ, Zhang Y, Niu J, Tu X, Amin S, Goggins J, LaValley M, Guermazi A, Gale D, Felson DT (2005) Structural factors associated with malalignment in knee osteoarthritis: the Boston osteoarthritis knee study. J Rheumatol 32:2192–2199PubMed Hunter DJ, Zhang Y, Niu J, Tu X, Amin S, Goggins J, LaValley M, Guermazi A, Gale D, Felson DT (2005) Structural factors associated with malalignment in knee osteoarthritis: the Boston osteoarthritis knee study. J Rheumatol 32:2192–2199PubMed
46.
Zurück zum Zitat Brouwer GM, van Tol AW, Bergink AP, Belo JN, Bernsen RM, Reijman M, Pols HA, Bierma-Zeinstra SM (2007) Association between valgus and varus alignment and the development and progression of radiographic osteoarthritis of the knee. Arthritis Rheum 56:1204–1211PubMedCrossRef Brouwer GM, van Tol AW, Bergink AP, Belo JN, Bernsen RM, Reijman M, Pols HA, Bierma-Zeinstra SM (2007) Association between valgus and varus alignment and the development and progression of radiographic osteoarthritis of the knee. Arthritis Rheum 56:1204–1211PubMedCrossRef
47.
Zurück zum Zitat Hunter DJ, Niu J, Felson DT, Harvey WF, Gross KD, McCree P, Aliabadi P, Sack B, Zhang Y (2007) Knee alignment does not predict incident osteoarthritis: the Framingham osteoarthritis study. Arthritis Rheum 56:1212–1218PubMedCrossRef Hunter DJ, Niu J, Felson DT, Harvey WF, Gross KD, McCree P, Aliabadi P, Sack B, Zhang Y (2007) Knee alignment does not predict incident osteoarthritis: the Framingham osteoarthritis study. Arthritis Rheum 56:1212–1218PubMedCrossRef
Metadaten
Titel
Medial-to-Lateral Ratio of Tibiofemoral Subchondral Bone Area is Adapted to Alignment and Mechanical Load
verfasst von
Felix Eckstein
Martin Hudelmaier
September Cahue
Meredith Marshall
Leena Sharma
Publikationsdatum
01.03.2009
Verlag
Springer-Verlag
Erschienen in
Calcified Tissue International / Ausgabe 3/2009
Print ISSN: 0171-967X
Elektronische ISSN: 1432-0827
DOI
https://doi.org/10.1007/s00223-008-9208-4

Weitere Artikel der Ausgabe 3/2009

Calcified Tissue International 3/2009 Zur Ausgabe

Leitlinien kompakt für die Innere Medizin

Mit medbee Pocketcards sicher entscheiden.

Seit 2022 gehört die medbee GmbH zum Springer Medizin Verlag

Reizdarmsyndrom: Diäten wirksamer als Medikamente

29.04.2024 Reizdarmsyndrom Nachrichten

Bei Reizdarmsyndrom scheinen Diäten, wie etwa die FODMAP-arme oder die kohlenhydratreduzierte Ernährung, effektiver als eine medikamentöse Therapie zu sein. Das hat eine Studie aus Schweden ergeben, die die drei Therapieoptionen im direkten Vergleich analysierte.

Notfall-TEP der Hüfte ist auch bei 90-Jährigen machbar

26.04.2024 Hüft-TEP Nachrichten

Ob bei einer Notfalloperation nach Schenkelhalsfraktur eine Hemiarthroplastik oder eine totale Endoprothese (TEP) eingebaut wird, sollte nicht allein vom Alter der Patientinnen und Patienten abhängen. Auch über 90-Jährige können von der TEP profitieren.

Niedriger diastolischer Blutdruck erhöht Risiko für schwere kardiovaskuläre Komplikationen

25.04.2024 Hypotonie Nachrichten

Wenn unter einer medikamentösen Hochdrucktherapie der diastolische Blutdruck in den Keller geht, steigt das Risiko für schwere kardiovaskuläre Ereignisse: Darauf deutet eine Sekundäranalyse der SPRINT-Studie hin.

Bei schweren Reaktionen auf Insektenstiche empfiehlt sich eine spezifische Immuntherapie

Insektenstiche sind bei Erwachsenen die häufigsten Auslöser einer Anaphylaxie. Einen wirksamen Schutz vor schweren anaphylaktischen Reaktionen bietet die allergenspezifische Immuntherapie. Jedoch kommt sie noch viel zu selten zum Einsatz.

Update Innere Medizin

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.