Primary Flexible Implant Arthroplasty of the Metacarpophalangeal Joints During Digital Replantation.

1986 ◽  
Vol 11 (3) ◽  
pp. 414-416
Author(s):  
S. KAY ◽  
J. S. WATSON
Keyword(s):  
Silicone Rubber ◽  
Metacarpophalangeal Joints ◽  
Good Function ◽  
Digital Replantation

Primary silicone rubber arthroplasty in a total of four metacarpophalangeal joints during digital replantation or revascularisation in two patients is reported. The results appear preferable to present alternatives and allow good function without prejudicing further management.

Reconstruction Of The Digital Tendon-Sheath In “No-Man'S” Land With Autologous Transplanted Vein-Graft

HAND ◽  
1978 ◽  
Vol os-10 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Mihály Forgon ◽  
Vilmos Bíró
Keyword(s):  
Silicone Rubber ◽  
Saphenous Vein ◽  
Vein Graft ◽  
Adhesion Formation ◽  
Tendon Sheath ◽  
Endothelial Lining ◽  
Good Function ◽  
Second Stage ◽  
Silicone Rod ◽  
No Man's Land

summary A two-stage procedure is described for severely damaged flexor tendons in “no man's land”. In the first stage the damaged tendons and scarred tendon sheath are excised and a segment of the saphenous vein, cannulated by a silicone rubber rod is transplanted into the tendon bed. In the second stage the silicone-rod is replaced by a free transplanted tendon. The endothelial lining of the vein is a guarantee of a good gliding surface and an obstacle to adhesion formation, and so it ensures good function. A review of the method and a survey of thirty-nine cases are presented.

Some Methods for Bone Fixation for Digital Replantation

HAND ◽  
1982 ◽  
Vol os-14 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Y. Yamano ◽  
H. Matsuda ◽  
K. Nakashima ◽  
A. Shimazu
Keyword(s):  
Proximal Phalanx ◽  
Good Function ◽  
Bone Fixation ◽  
Intramedullary Screw ◽  
Digital Replantation

Solid bone fixation constitutes one of the important factors in obtaining good function after replantation of amputated digits. Comparison has been made of various methods of bone fixation including a newly designed ceramic intramedullary screw which we have found useful for cases of amputation of a middle or proximal phalanx around its middle.

Computing cell tractions from particle displacements on silicone rubber substrata

1994 ◽  
Vol 52 ◽  
pp. 162-163
Author(s):  
Tim Oliver ◽  
Akira Ishihara ◽  
Ken Jacobsen ◽  
Micah Dembo
Keyword(s):  
Plane Stress ◽  
Linear Elasticity ◽  
Silicone Rubber ◽  
Mathematical Analysis ◽  
Elastic Recovery ◽  
Video Images ◽  
Cell Traction Forces ◽  
Latex Beads ◽  
Cell Traction ◽  
Better Than

In order to better understand the distribution of cell traction forces generated by rapidly locomoting cells, we have applied a mathematical analysis to our modified silicone rubber traction assay, based on the plane stress Green’s function of linear elasticity. To achieve this, we made crosslinked silicone rubber films into which we incorporated many more latex beads than previously possible (Figs. 1 and 6), using a modified airbrush. These films could be deformed by fish keratocytes, were virtually drift-free, and showed better than a 90% elastic recovery to micromanipulation (data not shown). Video images of cells locomoting on these films were recorded. From a pair of images representing the undisturbed and stressed states of the film, we recorded the cell’s outline and the associated displacements of bead centroids using Image-1 (Fig. 1). Next, using our own software, a mesh of quadrilaterals was plotted (Fig. 2) to represent the cell outline and to superimpose on the outline a traction density distribution. The net displacement of each bead in the film was calculated from centroid data and displayed with the mesh outline (Fig. 3).

Video-microscopic measurement of cell-substratum traction forces generated by locomoting keratocytes

1993 ◽  
Vol 51 ◽  
pp. 188-189
Author(s):  
Tim Oliver ◽  
Michelle Leonard ◽  
Juliet Lee ◽  
Akira Ishihara ◽  
Ken Jacobson
Keyword(s):  
Silicone Rubber ◽  
Molecular Motors ◽  
Video Frame ◽  
Traction Forces ◽  
Cell Traction Forces ◽  
Latex Beads ◽  
Cell Traction ◽  
Local Cell ◽  
Microscopic Measurement ◽  
Kinetics Of

We are using video-enhanced light microscopy to investigate the pattern and magnitude of forces that fish keratocytes exert on flexible silicone rubber substrata. Our goal is a clearer understanding of the way molecular motors acting through the cytoskeleton co-ordinate their efforts into locomotion at cell velocities up to 1 μm/sec. Cell traction forces were previously observed as wrinkles(Fig.l) in strong silicone rubber films by Harris.(l) These forces are now measureable by two independant means.In the first of these assays, weakly crosslinked films are made, into which latex beads have been embedded.(Fig.2) These films report local cell-mediated traction forces as bead displacements in the plane of the film(Fig.3), which recover when the applied force is released. Calibrated flexible glass microneedles are then used to reproduce the translation of individual beads. We estimate the force required to distort these films to be 0.5 mdyne/μm of bead movement. Video-frame analysis of bead trajectories is providing data on the relative localisation, dissipation and kinetics of traction forces.

Radiographic Prevalence of Osteochondrosis in Yearling Feral Horses

1999 ◽  
Vol 12 (03) ◽  
pp. 151-155 ◽  
Author(s):  
L. W. Valentino ◽  
E. M. Gaughan ◽  
D. R. Biller ◽  
R. H. Raub ◽  
J. D. Lillich
Keyword(s):  
Subchondral Bone ◽  
Management Practices ◽  
Articular Surface ◽  
Radiographic Images ◽  
Feral Horses ◽  
Metacarpophalangeal Joints ◽  
Genetic Base ◽  
Domestic Horses ◽  
The Difference ◽  
Metatarsophalangeal Joints

The purpose of the study is to document the prevalence of articular surface osteochondrosis lesions in feral horses. Eighty yearling feral horses were used. Radiographic images of the left stifle, both tarsocrural, metatarsophalangeal, metacarpophalangeal joints were taken. Radiographs were examined for the presence of osteochondral fragmentation and abnormal outline of subchondral bone suggestive of osteochondrosis. The prevalence of each lesion was calculated for each joint as well as for overall prevalence within the group, the latter being 6.25%. Typical osteochondrosis lesions were found within the tarsocrural and metatarsophalangeal joints. Based on the difference in prevalence of osteochondrosis between feral and certain domestic horses, management practices and perhaps genetic base may have a greater influence on the development of the disease in horses than trauma alone.

Sign in / Sign up

Export Citation Format

Share Document