Foot reconstruction in weight bearing area

1993 ◽  
Vol 16 (4-5) ◽  
Author(s):  
P. Roggero ◽  
Y. Blanc ◽  
S. Krupp
Keyword(s):  
Weight Bearing ◽  
Foot Reconstruction ◽  
Weight Bearing Area

Plantar Flap for Foot Reconstruction

2019 ◽  
pp. 891-896
Author(s):  
Benjamin T. Lemelman ◽  
David W. Chang
Keyword(s):  
Free Flap ◽  
Weight Bearing ◽  
Donor Site ◽  
Sensory Function ◽  
Medial Plantar Nerve ◽  
Foot Reconstruction ◽  
Donor Site Defect ◽  
Weight Bearing Area ◽  
Sole Of The Foot

The medial plantar flap is an axial pattern flap from the non–weight-bearing area of the sole of the foot between the heel and the metatarsal heads. The flap can be raised as a pedicle or a free flap, based on either the medial or lateral plantar arteries, or both. Sensory function is provided by branches of the medial plantar nerve. The donor site defect in the foot has caused no difficulty except for occasional marginal hyperkeratosis.

scholarly journals Degradation of subchondral bone collagen in the weight-bearing area of femoral head is associated with osteoarthritis and osteonecrosis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Zongyi Wu ◽  
Bingzhang Wang ◽  
Jiahao Tang ◽  
Bingli Bai ◽  
Sheji Weng ◽  
...  
Keyword(s):  
Femoral Head ◽  
Trabecular Bone ◽  
Subchondral Bone ◽  
Weight Bearing ◽  
Collagen Fibers ◽  
Bone Collagen ◽  
Control Group ◽  
Neck Fracture ◽  
Hematoxylin And Eosin ◽  
Weight Bearing Area

Abstract Background The aim of the study was to evaluate the change of subchondral bone collagen and trabecular bone in the weight-bearing area of femoral head from patients with osteoarthritis (OA) or osteonecrosis of femoral head (ONFH), and discuss the effect of collagen degradation on OA and ONFH. Methods Femoral heads from patients with femoral neck fracture (FNF) were collected as control group. All collected samples were divided into OA group (N = 10), ONFH group (N = 10), and FNF group (N = 10). Differences of subchondral bone collagen were compared through scanning electron microscope (SEM) observation, immunohistochemistry staining, and Masson’s trichrome staining. Alteration of subchondral bone was displayed through hematoxylin and eosin (H&E) staining and gross morphology. Results SEM results showed that collagen fibers in OA and ONFH group appeared to be thinner, rougher, sparser, and more wizened. Immunohistochemistry and Masson’s trichrome staining results demonstrated that the content of collagen fibers in the OA and ONFH group was obviously less than the FNF group. H&E staining results showed that trabecular bone in OA and ONFH group appeared to be thinner and ruptured. Gross morphology results showed that the degeneration and destruction of cartilage and subchondral bone in OA and ONFH group were severer than FNF group. The characteristics mentioned above in ONFH group were more apparent than OA group. Conclusions This study revealed that degradation of collagen fibers from subchondral bone in the weight-bearing area of femoral head was associated with OA and ONFH, which may help to find new therapeutic strategies of the diseases.

scholarly journals Amniotic membrane-derived stem cells help repair osteochondral defect in a weight-bearing area in rabbits

2017 ◽  
Vol 14 (1) ◽  
pp. 187-192 ◽  
Author(s):  
Zhijin Zhang ◽  
Linru Zeng ◽  
Jun Yang ◽  
Lin Guo ◽  
Qiao Hou ◽  
...  
Keyword(s):  
Stem Cells ◽  
Amniotic Membrane ◽  
Osteochondral Defect ◽  
Weight Bearing ◽  
Weight Bearing Area

scholarly journals Acetabular roof arc angles and anatomic biomechanical superior acetabular weight bearing area

2014 ◽  
Vol 48 (5) ◽  
pp. 484 ◽  
Author(s):  
Thossart Harnroongroj ◽  
Narumol Sudjai ◽  
Thos Harnroongroj ◽  
Montri Wattanakaewsripetch
Keyword(s):  
Weight Bearing ◽  
Acetabular Roof ◽  
Weight Bearing Area

scholarly journals Medial Plantar Flap for Skin Defects of the Weight-bearing Area of the Foot.

1999 ◽  
Vol 48 (3) ◽  
pp. 982-985 ◽  
Author(s):  
Hideyuki Sunagawa ◽  
Fuminori Kanaya ◽  
Chojo Futenma ◽  
Katsuhiko Kiyama ◽  
Wataru Oshiro ◽  
...  
Keyword(s):  
Weight Bearing ◽  
Skin Defects ◽  
Weight Bearing Area

scholarly journals Finite element modeling of proximal femur with quantifiable weight-bearing area in standing position

2020 ◽  
Author(s):  
Yang Peng ◽  
Tian-Ye Lin ◽  
Jing-Li Xu ◽  
Hui-Yu Zeng ◽  
Da Chen ◽  
...  
Keyword(s):  
Finite Element ◽  
Femoral Head ◽  
Proximal Femur ◽  
Physical Phenomenon ◽  
Weight Bearing ◽  
Positional Distribution ◽  
Standing Position ◽  
Fe Model ◽  
X Ray ◽  
Weight Bearing Area

Abstract BackgroundThe positional distribution and size of the weight-bearing area of femoral head in the standing position as well as the direct active surface of joint force can directly affect the result of finite element (FE) stress analysis, however in most studies related separate FE models of femur, the division of this area is vague, imprecise and un-individualized. The purpose of this study was to quantify the positional distribution and size of the weight-bearing area of femoral head in standing position by a set of simple methods, to realize individualized reconstruction of proximal femur FE model.MethodsFive adult volunteers were recruited for X-ray and CT examination in the same simulated bipedal standing position with a specialized patented device. We extracted these image data, calculated the 2D weight-bearing area on X-ray image, reconstructed the 3D model of proximal femur based on CT data, and registered them to realize the 2D weight-bearing area to 3D transformation as the quantified weight-bearing surface. One of the 3D models of proximal femur was randomly selected for finite element analysis (FEA), and we defined three different loading surfaces, and compared their FEA results.ResultsA total of 10 weight-bearing surfaces in 5 volunteers were constructed, they were mainly distributed on the dome and anterolateral of femoral head with crescent shape, in the range of 1,218.63mm2 - 1,871.06mm2. The results of FEA showed stress magnitude and distribution in proximal femur FE models among three different loading conditions were significant differences, the loading case with quantized weight-bearing area was more in accordance with the physical phenomenon of the hip.ConclusionThis study confirmed an effective FE modeling method of proximal femur, which can quantify weight-bearing area to define more reasonable load surface setting without increasing the actual modeling difficulty.

Arthroscopic removal of osteoid osteoma with gamma probe assistance in the hip joint

2018 ◽  
Vol 29 (3) ◽  
pp. 328-335
Author(s):  
Klemen Stražar ◽  
Ivan Slodnjak ◽  
Oskar Zupanc ◽  
Matej Drobnič
Keyword(s):  
Osteoid Osteoma ◽  
Hip Joint ◽  
Weight Bearing ◽  
Gamma Probe ◽  
Case Series ◽  
Life Questionnaire ◽  
Post Surgery ◽  
Arthroscopic Removal ◽  
Patient Reported ◽  
Weight Bearing Area

Aim: The aim was to present the surgical technique and clinical outcome in a series of patients treated with gamma-probe-assisted arthroscopic removal of osteoid osteoma in the hip joint. Methods: The case series consisted of 10 patients diagnosed with osteoid osteoma of the hip, who were treated by arthroscopic nidus removal. An endoscopic gamma probe was used intraoperatively to locate the nidus and to control the extent of its removal. Residual osteoma cavities were additionally treated with an arthroscopic radiofrequency ablator. Microfracturing was performed when the osteochondral defect was in the weight-bearing area and osteochondroplasty was done in cases of concomitant cam deformity. Nonarthritic Hip Score (NAHS), Tegner activity score, quality of life questionnaire (EQ-5D) and postoperative magnetic resonance imaging (MRI) were used for evaluation before and post-surgery, with a minimum follow-up of 2 years. Results: The relative reduction of the gamma irradiation count immediately after removal of the nidus was 44.9% (range 33.3–54.5%). Postoperatively, all patients experienced prompt pain relief and a significant improvement according to all patient reported outcomes. Control MRI revealed fibro-cartilaginous tissue repair of post-osteoma osteochondral defects in the weight-bearing area; 1 patient showed signs of early degeneration. Conclusions: The results of this case series demonstrated the safety and high efficacy of gamma-probe-assisted arthroscopic removal of the osteoid osteoma from the hip joint. Endoscopic gamma probe was recognised as a very useful device for locating the nidus of the osteoid osteoma exactly and preventing incomplete or excessive removal of the bone.

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