Went and got Dylan's helmet fitted yesterday. It's a bit strange, but it's surprisingly easy to get used to. Although cuddling him isn't quite as easy as the helmet gets in the way a little.
He will be wearing it for 22 to 23 hours a day, but this is built up over a 4-day period. So yesterday he was wearing it for an hour on then an hour off throughout the day (except for naps and overnight), today it's two hours on and one off, etc. It's not the easiest thing to put on and we're not totally convinced we've got it right all the time. It does need to be on reasonably accurately which doesn't really allow for wriggling babies. Oh well! Once it's on he seems reasonably unfazed by it which is the main thing.
We have consultations every fortnight for the first month and then every month after that to see how the shape of the head is changing and ensuring the fit is correct given growth.
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| Laser scan of his head showing deformities. This scan is the basis of the internal structure of the helmet. |
Wednesday - 17Oct12
Not having the best day, but this wondered past. Made us both laugh. A lot. Especially the bit about the octopus.
Dylan's helmet has been ordered, we just have to make sure we're happy with the colour of it. There is quite a large choice from pink butterflies through to skull and crossbones. That'll arrive at the end of next week. Hopefully we'll have some 3d laser scans of his head to post soon.
Monday - 15Oct12
Well, that was an experience!
I can recommend not breaking down in France, especially if parts are required. Not that we really broke down. It's just that we would have probably broken down if we'd tried driving home. The battery wasn't charging so a new alternator was required. In the UK one of these will set you back in the region of 150quid. En France... over 300quid. Unfortunately, even after spending almost half the value of the car on repairs, it's still not completely right. We get to drive around with the battery warning light on until I get round to working out why. The French garage who did the work didn't know why either. Joy.
Worse, whilst the car was in the garage, Dylan got (more) ill. He went to France with a cold, he then got another cold at the start of the second week. A really quite bad cold. Which forced us to send him home before the end of the holiday. The Mother went too as we thought putting a 7month old on the train home by himself a bit much! It turns out he has bronchiolitis a reasonably common form of cold but one that is not good for small children to catch. Further details can be found here, but this is an infectious disease of the lower respiratory tract that occurs primarily in the very young. It is usually due to a viral infection of the bronchioles (the passageways to the air sacs in the lungs). It is the most common cause of hospitalisation in infants It's the sort of infection that we were worried that Dylan would catch. As it turns out, he doesn't need hospitalisation, although he is not a happy boy. Although in fairness, if we'd had a car and been organised enough prior to the trip then we would probably have taken him to a French hospital\medical centre ...
He's really struggling with breathing and he's not really had a proper feed in almost a week (the "bad" day he didn't eat), likewise going for a wee. Oops. How this is manifest is that he now weighs less than he did at the start of September despite eating like a horse (as the photo below is manifest) prior to the illness: it was really quite remarkable how much "real" food he could get in! We also get even less sleep than normal as his coughing wakes him. Hopefully we only have another week of illness. It's the coughing that's the distressing thing...
In different news, we're going to Bristol tomorrow for the measurement of his new helmet. Not quite sure how he's going to wear his dragon hat until the helmet comes off!
| "See, not only can I get two spoons in my mouth, but I can spread food everywhere too!" |
| "Mummy! Look at me!" |
| Spot the knitted wellingtons ... |
Thursday - 04Oct12
Hmm.
Below is an image of Dylan's head with a some lines and an ellipse overlaid onto it.
The solid red lines define the major and minor axis of the ellipse (or should do). In Dylans' case the horizontal line should be longer than the vertical line, but more importantly the horizontal line should in fact be horizontal. This means that glasses are going to be a pain to fit (and yes, he's going to be wearing them given both his parents did from an early age). The dotted lines show the asymmetry: the line from top left to bottom right is clearly longer than the line from top right to bottom left. The blue dotted ellipse is an example ellipse to show where Dylan doens't quite fit into the "normal" head category. The ratio here (of horizontal distance to vertical) is about 73%. We've not had much luck in fitting a 102% ellipse to any photo of Dylan's head we've taken in the last few days. Clearly we're missing something (ok so I could set the tripod up to ensure a genuine vertical lookdown angle but then we'd need to fix Dylan somehow... any tips on how to stop a 7 month old from wriggling?!). There is an element that the whole point is that the ellipse is shortened so a little tricky to generate but that is not the whole problem here.
However, this website allows you to upload photos of your childs head and you can fit example head shapes to determine any deformity. These results roughly correspond to what we've been given.
The following websites are quite good for describing the measurements that are used in head deformity. Plagiocephaly is here, and bracycephaly is here (pdf file).
| Dylan's flat (back of) head |
| Horace the bear. Named after the story by Alice M Coates (pub.1937) The don't write stories like that anymore! A gem. |
Tuesday - 02Oct12
Head shape. Decisions, descisons. Although as has been said at least once too us, this isn't anything like as important as previous ones have been about his future!
The issue (or not) is that because he was doing zilch for the first two months other than lying on his back and learning to breathe he has developed a very flat head (brachycephaly). He also developed a preferential head turn so the his head is non-symmetric (plagiocephaly). The diagram below shows a rough picture of a "normal" head and the measurements taken.
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| A "normal" head and the measurements used |
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| How Dylan compares to normality. Except of course, it's flat at the bottom, more oblate spheriod, than ellipsoidal Might try and re-draw this. Anyone know the equation for a flattened ellipse?! |
The other measurement is whether the distance c equals the distance d. Anything within a tolerance of around 6mm can be considered normal. For Dylan, this value is 18mm.
An option open to us is to fit him with a helmet. What this does is it has space where the head needs to grow, and none where it's grown enough already thankyou very much. The helmet is in two parts, a polymer inside and a fibre-glass shell (to make it look pretty). The internal polymer mould of the helmet is created from a 3D model of the head which is generated using a laser scanner (geek-hat on: would using photometric stereo generate an equivalently accurate model at a lower price...). As the head expands to fill the gaps, bits of the polymer are shaved off in the appropriate place leaving (after 3 to 6 months, maybe more) a more symmetrical "normal"-shaped head.
Does it work? Well. There's a question. It can do. It will depend on the age of the child - the plates in the skull must be still mobile - and the severity of the deformity.
What happens if nothing is done? Assuming that the child is moving around and not (still) lying on his back and staring at the ceiling, then the skull should grow symmetrically. What this will mean when he is older is unknown. There are potentially a raft of medical problems from the more serious (jaw/teeth/hearing issues) to the mundane (glasses\ bike helmets not fitting) as well as perhaps an increased chance of bullying.
The sticking point? There is no proof it works. There are no randomised control studies. Another interesting point is who has picked the numbers that determine whether something is considered "severe"? How have any of the numbers been determined. And while the helmets have limited effect on the child, the parents suffer. It's hard to get a proper cuddle from them for a start. The helmets are worn nearly 24hrs a day for a period of months. Which is going to be hard-work.
Don't get me wrong, Dylan has an incredibly odd-shaped head that will (probably) grow symmetrically from now on unless we do something about it. But will that matter? 18mm difference in symmetry in a baby's head compares to what in an adults? (that's in tomorrow's update!)
We could just leave it and he joins the 4% of children up to the age of 4 who have head deformities.
Sunday - 30Sep12
Well, we made it to France although Dylan wasn't terribly happy about being in the car seat for hours and hours. Or at least that's what it felt like! Today we went into the forest to go climbing. Yay!
Dylan is developing well, today he rolled over onto his back unaided: he hasn't quite mastered the art of rolling onto his front and he still hates tummy time. He certainly doesn't give the impression of anyone who's going to be crawling soon. Which is good given the state of the house made only marginally worse by the builders (who are ace). We're probably going to put him in a helmet for "some time". This will sort his head shape out. Probably. Certainly more likely than doing nothing. I will attempt to explain with diagrams and photos over the next few days the problem and why we're going with this plan (rather than doing nothing).
| Dylan decides it's his turn to drive ... |
| Dad & Dylan off to the crag in the borrowed chariot (thanks Huw and Becky!) |
| Dylan learning the art of the mantleshelf |




