The Hounsfield value for cortical bone geometry in the proximal humerus—an in vitro study

@article{LimFat2011TheHV,
  title={The Hounsfield value for cortical bone geometry in the proximal humerus—an in vitro study},
  author={Daren Lim Fat and Jim Kennedy and Rosemary Galvin and Fergal Joseph O'Brien and Frank Mc Grath and Hannan Mullett},
  journal={Skeletal Radiology},
  year={2011},
  volume={41},
  pages={557-568}
}
IntroductionFractures of the proximal humerus represent a major osteoporotic burden. Recent developments in CT imaging have emphasized the importance of cortical bone thickness distribution in the prevention and management of fragility fractures. We aimed to experimentally define the CT density of cortical bone in the proximal humerus for building cortical geometry maps.MethodsWith ethical approval, we used ten fresh-frozen human proximal humeri. These were stripped of all soft tissue and high… Expand
Regional variations of cortical bone in the humeral head region: A preliminary study.
TLDR
Substantial regional variations in cortical bone structure at humeral head region were observed quantitatively in this study, and these morphologic data provided useful information on clinical medicine such as surgical fixation. Expand
Structural Analysis of Hollow Versus Solid-stemmed Shoulder Implants of Proximal Humeri with Different Bone Qualities.
TLDR
Results suggest a small improvement in bone-implant mechanics using hollow-stemmed humeral implants and indicate osteoporosis could exacerbate stress shielding to some extent and indicate hollow stems maintained adequate strength and using even thinner walls may further reduce stress shielding. Expand
Cortical Bone Fracture and Orthopaedic Fixation Devices: An Experimental and Computational Investigation
An investigation of proximal humeral fracture fixation has been conducted. Four devices were selected for the study; a locking plate, intramedullary nail (IM Nail), K-wires and a Bilboquet device. AExpand
Trabecular bone density distribution in the scapula relevant to reverse shoulder arthroplasty
TLDR
The higher-quality bone in the spine and lateral border, compared with the coracoid regions, may provide better bone purchase for screws when fixing the glenoid baseplate in RSA. Expand
Association between forearm cortical bone properties and handgrip strength in women with distal radius fractures: A cross-sectional study
TLDR
Cortical bone density might be associated with HGS, which is generated by the forearm flexor muscles, and could be supported in the upper extremities by the present study. Expand
Lower preoperative Hounsfield unit values are associated with intra-operative fractures in cementless bipolar hemiarthroplasty
TLDR
HU assessment using preoperative CT scan is associated with the presence of intra-operative fracture during bipolar hemiarthroplasty and it is believed that HU values of the proximal femur could be used to assess local bone quality. Expand
Predicting pathological fracture in femoral metastases using a clinical CT scan based algorithm: A case-control study.
TLDR
The demonstrated CT-based algorithms can be useful for predicting pathological fractures in metastatic lesions. Expand
Investigation of metallic and carbon fibre PEEK fracture fixation devices for three-part proximal humeral fractures.
TLDR
A computational investigation of proximal humeral fracture fixation has been conducted and CFPEEK device simulations predict reduced stresses at the device-bone interface. Expand
Computer tomographic analysis of anatomic characteristics of the ulna – essential parameters for preshaped implants
TLDR
The anatomy of the proximal ulna and the ulna shaft is described with a reproducible research method in a representative patient cohort for the development of a new intramedullary implant for stabilisation of proximal and diaphyseal ulna fractures. Expand
Computed tomography is a feasible method for quantifying bone density in Macaca mulatta
TLDR
Measurements of the left femur from a population in captivity of 32 rhesus monkeys (Macaca mulatta) in order to standardize the model for future research proved that a decrease in bone density begins at approximately 20 years of age. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 36 REFERENCES
The cortical thickness of the proximal humeral diaphysis predicts bone mineral density of the proximal humerus.
TLDR
The aim was to evaluate a new method which allows prediction of the bone quality of the proximal humerus from radiographs, and a significant positive correlation was found between cortical thickness and the BMD for each region of interest. Expand
Determination of Hounsfield value for CT-based design of custom femoral stems.
TLDR
The aim was to determine the Hounsfield (HU) value of the bone at the corticocancellous interface, as part of the criteria for the design algorithm, and recommend the 600 HU threshold as one of several criteria forThe design of custom femoral implants from CT data. Expand
Three-dimensional osseous micro-architecture of the distal humerus: implications for internal fixation of osteoporotic fracture.
TLDR
A potential weakness of plate fixation in the posterolateral aspect of the distal condyle is found because of relative insufficient osseous micro-architecture, which may affect the treatment of osteoporotic distal humerus fractures especially in elderly patients. Expand
Proximal humeral fractures: regional differences in bone mineral density of the humeral head affect the fixation strength of cancellous screws.
TLDR
Placement of screws in regions with a higher trabecular BMD may help to prevent implant loosening and may improve patient outcome. Expand
High resolution cortical bone thickness measurement from clinical CT data
TLDR
A novel technique is presented that is capable of producing unbiased thickness estimates down to 0.3 mm in the clinically relevant sub-millimetre range, where thresholding increasingly fails to detect the cortex at all, whereas the new technique continues to perform well. Expand
Where Should Implants Be Anchored in the Humeral Head?
TLDR
Knowing of distribution, microstructure, and quality of bone in the humeral head allows the remaining bone stock to be used effectively, even in elderly patients, with a minimally invasive approach and maximum mechanical stability. Expand
Factors affecting the stability of screws in human cortical osteoporotic bone: a cadaver study.
TLDR
The overall bone mass, the thickness and the bone mineral density of the cortical layer, are the main factors which affect the stability of a screw in human female osteoporotic cortical bone. Expand
Femoral anatomy, computed tomography and computer-aided design of prosthetic implants
TLDR
Virtual 3D models of the 30 cadaveric femurs were used to adjust a hypothetical stem to the proximal femur anatomy by repeated virtual implantations, which allowed for evaluation of anatomical parameters after hip reconstruction, amount of bone removal, and cortical bone contact. Expand
Age- and gender-related distribution of bone tissue of osteoporotic humeral head using computed tomography.
TLDR
There was a significant difference among the 3 groups (age-related), as well as between the medial and lateral sides, with regard to the percentage of bone tissue, and osteopenic change in the humeral head has a negative correlation with aging. Expand
Surgical neck fractures of the proximal humerus: a laboratory evaluation of ten fixation techniques.
TLDR
A biomechanical cadaver study was performed to compare the stability and ultimate strength of ten standard fixation techniques used for the treatment of surgical neck fractures of the proximal humerus, showing the T-plate and screws provided significantly stronger fixation than all other methods. Expand
...
1
2
3
4
...