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Is the golden age of surgery over?
An image showing bacteria surviving extreme environments. The image is CC by Dan Graham. Any orthopaedic surgeon’s (and patient’s) nightmare is postoperative infections. Luckily these have been rare...
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Creating an R package in Windows
A nice package can be both beautiful and functional. The image is CC by MIAD Communication Design. Inspired by this post by Szilard Pafka I decided to do a similar adventure in a Windows environment...
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Personal CRAN-repository
Offering – the backbone of open source. The image is CC by TenthMusePhotography This is part II of the previous package creation post. I’ve created my own CRAN repository since I wanted a quick upload....
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Ackilles tendon ruptures – to operate or not to operate
Squash is one of my favorite sports, although unfortunately plagued by frequent achilles tendon ruptures as all racket sports. The image is CC by penguincakes. A recent meta-analysis comparing...
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Chocolate and nobel prize – a true story?
Few of us can resist chocolate, but the real question is: should we even try to resist it? The image is CC by Tasumi1968. As a dark chocolate addict I was relieved to see Messerli’s ecological study on...
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Are the tourniquet’s days over?
Do tourniquets leave a sour aftertaste? The image is CC by Capsicina. Total knee arthroplasties are common procedures, about 12-13 000 primary procedures are performed each year in Sweden (population 9...
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Simply better?
Simple things are often beautiful. The image is CC, a work by: Ferran Jordà / bw-color.com . The gap between regular health care and research can sometimes be overwhelming. The researchers have the...
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Tables from R into Word
A good looking table matters! This tutorial is on how to create a neat table in Word by combining knitr and R Markdown. I’ll be using my own function, htmlTable, from the Gmisc package. Background:...
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Spinal vs general anesthesia
Drops from a needle. The image is CC by Evan Leeson Many of us orthopaedic surgeons have been frustrated by waiting for the anesthesiologist to finish with the spinal anesthesia. It is therefore of...
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Exporting nice plots in R
It’s not always easy getting the right size. The image is CC by Kristina Gill. A vital part of statistics is producing nice plots, an area where R is outstanding. The graphical ablility of R is often...
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Dr. when can I drive again?
When is it appropriate to return to driving? The image is CC by K嘛. As an orthopaedic surgeon I’m often confronted by patients asking me when they can return to driving. While this is a natural...
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Exporting plain, lattice, or ggplot graphics
A blend between a basic scatterplot, lattice scatterplot and a ggplot In a recent post I compared the Cairo packages with the base package for exporting graphs. Matt Neilson was kind enough to share in...
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Stroke and THR
Can the promise of the new life after a total hip arthroplasty becom shattered by a stroke? The image is CC by Andreas Levers. A recent study from Denmark by Lalmohamed et al. looked at stroke risk...
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Using the SVD to find the needle in the haystack
Sitting with a data set with too many variables? The SVD can be a valuable tool when you’re trying to sift through a large group of continuos variables. The image is CC by Jonas in China. It can feel...
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Age before beauty
Sticking to the old, proven concepts have often turned out to be a good strategy in orthopaedics. Switching hip implants can be both cumbersome and hazardous. The image is CC by Trey Ratcliff. In my...
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Extracting comorbidities from a database in SPSS
Using large databases for extracting data can be cumbersome, fortunately it’s more reliable than sifting for gold. The image is CC by Won-Tolla. I put a lot of effort in to my first article to...
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Getting to the point – an alternative to the bezier arrow
An alternative bezier arrow to the regular grid-bezier. Apart from a cool gradient it has the advantages of: exact width, exact start/end points and axis alignment. About two weeks ago I got frustrated...
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Visualizing transitions with the transitionPlot function
A transition between states – the above is a simulation of before and after surgery where I’ve highlighted the large proportion that doesn’t improve in the moderate group. As an orthopaedic surgeon I’m...
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Dealing with the degenerative meniscus – to cut or not to cut?
The most common symptom that an orthopaedic surgeon treats is pain, while simple in concept it turns out to be surprisingly difficult to pin down the cause. The picture is a bed of nails, CC by Ormando...
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The rotator cuff dilemma
A black-shouldered kite just after a meal, a beautiful picture that is CC and made by David Jenkins. Although I’m not a shoulder surgeon, I find the rotator cuff injuries fascinating. The rotator cuff...
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