Major components of bone in subcapital and trochanteric fractures. A comparative study

Ferris, B D; Dodds, R.A.; Klenerman, L.; Bitensky, Lucille; Chayen, J.

doi:10.1302/0301-620x.69b2.2434511

Cited by 13 publications

(2 citation statements)

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“…Calcium phosphates, especially hydroxyapatite [Ca 10 (PO 4 ) 6 -(OH) 2 , HAp], is a chief inorganic material occupying about 70% of our hard tissue, and HAp is innocuity for a biological body and an environment. 1)3) In addition, HAp exhibits excellent biocompatibility and bioactivity and also has unique property of ion exchange ability.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fe addition to hydroxyapatite by hydrothermal process

Sato

Nakahira

2013

J. Ceram. Soc. Japan

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In order to develop non toxic magnetic beads, influence of Fe addition to the hydroxyapatite was investigated, and Fe doped hydroxyapatite was prepared by hydrothermal process at 423 K. The crystal phase of obtained samples had a hydroxyapatite related structure, and ¡-Fe 2 O 3 phase generated as a second phase at the ratio of Fe more than 5 mol % additions. The ratio of ¡-Fe 2 O 3 phase increased depending on the ratio of Fe, and 40 and 73% of added Fe existed as ¡-Fe 2 O 3 phase at 5 and 10 mol % addition, and the estimated doped amount of Fe is about 2.1 mol % for 5 mol % addition and 2.7 mol % for 10 mol % addition, respectively. All samples showed paramagnetic property, and magnetization of sample increased depending on the ratio of Fe. The maximum magnetization of 0.63 Am 2 /kg was obtained at the Fe ratio of 10 mol %.

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Section: Introductionmentioning

confidence: 99%

Influence of Fe addition to hydroxyapatite by hydrothermal process

Sato

Nakahira

2013

J. Ceram. Soc. Japan

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“…Factors predisposing to the type of fracture might include mechanism of injury [20], gender [14], age [9,14,20], degree of osteoporosis [12], mineral quality and anisotropy of the bone matrix [7,12], nutritional status of the patient [14], femoral neck length [1,3,6,8,18,21], and degree of external rotation of the femoral head [1] No studies have satisfactorily established any predisposition to one type of fracture over the other.…”

Section: Introductionmentioning

confidence: 99%

Influence of Acetabular and Femoral Version on Fractures of the Femoral Neck

Frost

Pavlou

Richards

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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Background Fractures through the proximal femur are broadly grouped into intertrochanteric fractures and intracapsular fractures. It is not clear why a patient may sustain an intertrochanteric fracture as compared with an intracapsular fracture. There is an established relationship between relative hip retroversion and the development of osteoarthritis. We postulate retroversion also may be a risk factor for having intracapsular fractures develop. Questions/purposes We looked specifically at the geometry of the hip to analyze the possibility of a relationship between acetabular version, femoral version, and Mckibbin's instability index and fracture type. Patients and Methods We recruited 40 patients with fractures of the femoral neck for the study. There were 15 men and 25 women with a mean age of 80 years (range, 57-92 years). There were 14 intertrochanteric fractures and 26 intracapsular fractures. After treating their fracture, the contralateral hip was scanned in a CT scanner and assessed by two independent observers to establish the acetabular and femoral version. Results We found no correlation between proximal femoral fracture type and the contralateral femoral version, femoral neck length, acetabular version, or Mckibbin's instability index or between fracture type and age or gender. Conclusions There appears to be no correlation between proximal femoral fracture type and acetabular or femoral version.

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FTIR Microspectroscopic Analysis of Human Iliac Crest Biopsies from Untreated Osteoporotic Bone

et al. 1997

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Historically, osteoporosis has been defined as a disease in which there is "too little bone, but what there is, is normal." As a result of research design and sample selection limitations, published data contradict and confirm the historical definition. Because of these limitations, it has been hard to assess the contribution of mineral quality to mechanical properties, and to select therapeutic protocols that optimize bone mineral properties. The coupling of an optical microscope to an infrared spectrometer enables the acquisition of spectral data at known sites in a histologic section of mineralized tissue without loss of topography and/or orientation. The use of second-derivative spectroscopy coupled with curve-fitting techniques allows the qualitative and quantitative assessment of mineral quality (crystallite size and perfection, mineral:matrix ratio) at well-defined morphologic locations. We have previously applied these techniques to the study of normal human osteonal, cortical, and trabecular bone. The results indicated that the newly deposited bone mineral is less "crystalline/mature" than the older one. In the present study, Fourier transform infrared microspectroscopy (FTIRM) was applied to the study of human osteonal and cortical bone from iliac crest biopsies of untreated osteoporotic patients. The hypothesis tested was that osteoporotic bone mineral is monotonically different in its properties expressed as "crystallinity/maturity" than the normal. The results indicate significant differences in the mineral properties as expressed by crystal size and perfection, with the mineral from osteoporotic bone being more crystalline/mature than the normal.

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Major components of bone in subcapital and trochanteric fractures. A comparative study

Cited by 13 publications

References 0 publications

Influence of Fe addition to hydroxyapatite by hydrothermal process

Influence of Fe addition to hydroxyapatite by hydrothermal process

Influence of Acetabular and Femoral Version on Fractures of the Femoral Neck

FTIR Microspectroscopic Analysis of Human Iliac Crest Biopsies from Untreated Osteoporotic Bone

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