A three-dimensional medical imaging model for quantitative assessment of proximal tibia vs. anterior iliac crest cancellous bone

The Knee ◽  
2008 ◽  
Vol 15 (3) ◽  
pp. 233-237 ◽  
Author(s):  
Constantinos E. Nikolopoulos ◽  
Andreas F. Mavrogenis ◽  
Glykeria Petrocheilou ◽  
Constantinos Kokkinis ◽  
Panayiotis Diamantopoulos ◽  
...  
Keyword(s):  
Medical Imaging ◽  
Cancellous Bone ◽  
Quantitative Assessment ◽  
Iliac Crest ◽  
Proximal Tibia ◽  
Three Dimensional ◽  
Imaging Model

A New Modified Technique for Harvest of Calcaneal Bone Grafts in Surgery on the Foot and Ankle

1998 ◽  
Vol 19 (5) ◽  
pp. 322-326 ◽  
Author(s):  
Kent R. Biddinger ◽  
Gregory A. Komenda ◽  
Lew C. Schon ◽  
Mark S. Myerson
Keyword(s):  
Cancellous Bone ◽  
Plantar Fasciitis ◽  
Iliac Crest ◽  
Proximal Tibia ◽  
Distal Tibia ◽  
Heel Pain ◽  
Foot And Ankle ◽  
Greater Trochanter ◽  
Modified Technique

Reported sites for retrieval of cancellous bone for grafts include the iliac crest, greater trochanter, proximal tibia, and distal tibia. A new lateral technique for retrieval of cancellous bone from the calcaneus is evaluated through anatomic review, quantitative analysis, and retrospective clinical assessment. Of 22 patients managed with this technique over a 2-year period, 17 returned for an evaluation by questionnaire, physical examination, and radiographic follow-up at an average of 7 months after surgery (range, 4–16 months). Complaints/complications were minor: three had minor incisional symptoms, five had medial heel pain (3 caused by plantar fasciitis), and one had unchanged preoperative heel pain secondary to clubfoot deformity. Compared with more extensive bone-grafting procedures, this procedure offers the advantages of bone harvested under local anesthesia using a readily accessible ipsilateral extremity and producing minor complications.

A Three-Dimensional Finite Element Analysis of the Upper Tibia

1986 ◽  
Vol 108 (2) ◽  
pp. 111-119 ◽  
Author(s):  
R. B. Little ◽  
H. W. Wevers ◽  
D. Siu ◽  
T. D. V. Cooke
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Cortical Bone ◽  
Cancellous Bone ◽  
Proximal Tibia ◽  
Three Dimensional ◽  
Element Model ◽  
Base Line ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

A three-dimensional finite element model of the proximal tibia has been developed to provide a base line for further modeling of prosthetic resurfaced tibiae. The geometry for the model was developed by digitizing coronal and transverse sections made with the milling machine, from one fresh tibia of average size. The load is equally distributed between the medial and lateral compartments over contact areas that were reported in the literature. An indentation test has been used to measure the stiffness and the ultimate strength of cancellous bone in four cadaver tibiae. These values provided the statistical basis for characterising the inhomogeneous distribution of the cancellous bone properties in the proximal tibia. All materials in the model were assumed to be linearly elastic and isotropic. Mechanical properties for the cortical bone and cartilage have been taken from the literature. Results have been compared with strain gage tests and with a two-dimensional axisymmetric finite element model both from the literature. Qualitative comparison between trabecular alignment, and the direction of the principal compressive stresses in the cancellous bone, showed a good relationship. Maximum stresses in the cancellous bone and cortical bone, under a load which occurs near stance phase during normal gait, show safety factors of approximately eight and twelve, respectively. The load sharing between the cancellous bone and the cortical bone has been plotted for the first 40 mm distally from the tibial eminence.

scholarly journals More weighted cancellous bone can be harvested from the proximal tibia with less donor site pain than anterior iliac crest corticocancellous bone harvesting: retrospective review

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Hanju Kim ◽  
Ajit Kumar Kar ◽  
Aditya Kaja ◽  
Eic Ju Lim ◽  
Wonseok Choi ◽  
...  
Keyword(s):  
Bone Graft ◽  
Cancellous Bone ◽  
Iliac Crest ◽  
Proximal Tibia ◽  
Donor Site ◽  
Autogenous Bone ◽  
Vas Score ◽  
Donor Site Pain ◽  
The Mean ◽  
Site Pain

Abstract Background Iliac crest is the most preferred autogenous bone graft harvesting donor site while it has sorts of complications like prolonged pain, hematoma, and fracture. Harvesting cancellous bone from proximal tibia is also increasingly being used because of lower complications and less donor site pain. However, there are lack of studies to compare these two donor sites in detail. Thus, we proposed to investigate the available amount of autogenous bone graft from the proximal tibia. Methods Fifty-one patients who underwent simultaneous bone graft harvest from the PT and the AIC to fill up the given critical sized bone defects were enrolled in this study. We prospectively collected data including the weight of the harvested bone, donor site pain using the visual analog scale (VAS) score, and complications between the two sites. Results The mean weight of cancellous bone harvested from the PT was greater than AIC (33.2g vs. 27.4g, p = 0.001). The mean VAS score was significantly lesser in the PT up to 60 days after harvesting (p < 0.001). There was persistent pain up to 90 days in four PT patients and in seven AIC patients. The major complication was reported only in AIC patients (11.8%). Conclusions Harvesting cancellous bone from the PT is an acceptable alternative to the AIC for autogenous bone grafting owing to availability of more weighted graft bone and less donor site pain.

Induction of in Vivo Ectopic Hematopoiesis by a Three-Dimensional Structured Extracellular Matrix Derived from Decellularized Cancellous Bone

2019 ◽  
Vol 5 (11) ◽  
pp. 5669-5680 ◽  
Author(s):  
Naoko Nakamura ◽  
Tsuyoshi Kimura ◽  
Kwangwoo Nam ◽  
Toshiya Fujisato ◽  
Hiroo Iwata ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Cancellous Bone ◽  
Three Dimensional

scholarly journals Virtual Surgical Planning, Stereolitographic Models and CAD/CAM Titanium Mesh for Three-Dimensional Reconstruction of Fibula Flap with Iliac Crest Graft and Dental Implants

2021 ◽  
Vol 10 (9) ◽  
pp. 1922
Author(s):  
Carlos Navarro Cuéllar ◽  
Manuel Tousidonis Rial ◽  
Raúl Antúnez-Conde ◽  
Santiago Ochandiano Caicoya ◽  
Ignacio Navarro Cuéllar ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Surgical Planning ◽  
Iliac Crest ◽  
Three Dimensional ◽  
Titanium Mesh ◽  
Iliac Crest Graft ◽  
Virtual Surgical Planning ◽  
Fibula Flap ◽  
Dimensional Reconstruction ◽  
Cad Cam

Mandibular reconstruction with fibula flap shows a 3D discrepancy between the fibula and the remnant mandible. Eight patients underwent three-dimensional reconstruction of the fibula flap with iliac crest graft and dental implants through virtual surgical planning (VSP), stereolitographic models (STL) and CAD/CAM titanium mesh. Vertical ridge augmentation and horizontal dimensions of the fibula, peri-implant bone resorption of the iliac crest graft, implant success rate and functional and aesthetic results were evaluated. Vertical reconstruction ranged from 13.4 mm to 10.1 mm, with an average of 12.22 mm. Iliac crest graft and titanium mesh were able to preserve the width of the fibula, which ranged from 8.9 mm to 11.7 mm, with an average of 10.1 mm. A total of 38 implants were placed in the new mandible, with an average of 4.75 ± 0.4 implants per patient and an osseointegration success rate of 94.7%. Two implants were lost during the osseointegration period (5.3%). Bone resorption was measured as peri-implant bone resorption at the mesial and distal level of each implant, with a variation between 0.5 mm and 2.4 mm, and with a mean of 1.43 mm. All patients were rehabilitated with a fixed implant prosthesis with good aesthetic and functional results.

scholarly journals Micro-CT data of early physiological cancellous bone formation in the lumbar spine of female C57BL/6 mice

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Michael Zenzes ◽  
Paul Zaslansky
Keyword(s):  
Cancellous Bone ◽  
Structural Changes ◽  
Bone Growth ◽  
Post Partum ◽  
Three Dimensional ◽  
Lumbar Vertebra ◽  
Tissue Growth ◽  
Micro Ct ◽  
Mineral Density ◽  
Ct Data

AbstractMicro-CT provides critical data for musculoskeletal research, yielding three-dimensional datasets containing distributions of mineral density. Using high-resolution scans, we quantified changes in the fine architecture of bone in the spine of young mice. This data is made available as a reference to physiological cancellous bone growth. The scans (n = 19) depict the extensive structural changes typical for female C57BL/6 mice pups, aged 1-, 3-, 7-, 10- and 14-days post-partum, as they attain the mature geometry. We reveal the micro-morphology down to individual trabeculae in the spine that follow phases of mineral-tissue rearrangement in the growing lumbar vertebra on a micrometer length scale. Phantom data is provided to facilitate mineral density calibration. Conventional histomorphometry matched with our micro-CT data on selected samples confirms the validity and accuracy of our 3D scans. The data may thus serve as a reference for modeling normal bone growth and can be used to benchmark other experiments assessing the effects of biomaterials, tissue growth, healing, and regeneration.

The site of waist measurement impacts the estimation of visceral fat: Results from three-dimensional photonic body scanning

2021 ◽  
pp. 1-32
Author(s):  
Katja D Repp ◽  
Dörte Radke ◽  
Till Ittermann ◽  
Martin Albers ◽  
Marcello R P Markus ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Waist Circumference ◽  
Visceral Fat ◽  
Iliac Crest ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
3 Dimensional ◽  
Body Scanning ◽  
Standardized Protocol ◽  
Magnetic Resonance Imaging Mri

Abstract Currently various protocols regarding the site of waist circumference (WC) measurement are in place. This study aimed to analyze the effect of the site of WC measurement on visceral fat (VAT) estimation. WC was obtained at seven anatomical sites in 211 German volunteers (103 males) aged 23-81 using 3-dimensional photonic body scanning (PBS). At one site WC was additionally measured by tape. The quantity of VAT was assessed by magnetic resonance imaging (MRI). Models to estimate VAT based on WC were developed; the precision of the estimation is represented by R2. The influence of the applied method of WC assessment (tape vs. PBS) on the estimations is reported. Results show that the amount of estimated VAT and the precision of VAT estimation were dependent on the site of measurement. VAT was estimated most precisely by WC taken at the level of the lowest rib (WCrib: R²=0.75 females; 0.79 males), the minimum circumference (WCmin: R²=0.75 females; 0.77 males) and at the narrowest part of the torso (WCnar: R²=0.76 females; 0.77 males), and least precisely by WC assessed at the top of iliac crest (WCiliac: R²=0.61 females; 0.60 males). VAT estimates based on WC obtained by PBS were smaller and estimations were slightly less precise compared to estimates based on tape measures. Our results indicate that the method and the site of waist measurement should be considered when estimating VAT based on WC. The implementation of a standardized protocol using either WCrib, WCmin or WCnar could improve the precision of VAT estimation.

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