Thread form of medical ‘screws’.

[JimmieSParticipant @jimmies]

Many weeks ago I tripped and fractured my wrist which has still not healed. On my last visit the Doc mentioned inserting a screw if necessary. My thoughts turned to what thread was used on such items, perhaps BSW –  ‘Broke Stupid Wrist’ or BSF – ‘Bl..dy Stupid Fall’.

Any ideas of the correct answer?

Jim

[Julie AnnParticipant @julieann]

They are not a standard engineering thread. More like a constant diameter wood screw as the thread needs to cut into the bone when they are inserted. For hernia repairs the screw looks more like a corkscrew and is inserted with a ‘gun’. There are a wide range of different medical screws depending upon application, so difficult to speak in general terms.

Julie

[Pete RimmerParticipant @peterimmer30576]

Fractured scaphoid by any chance? I’ve done it 3 times, it’s very painful and slow to heal. If the fracture is displaced and not fixed then half the bone can die and then you are in a bit of trouble.

[Michael GilliganParticipant @michaelgilligan61133]

Here’s  an assortment in my right leg

.

.

They only removed the one that locked the Fibula to the Tibia … all these are still in place. … They refused to give me that one as a souvenir 🙁

MichaelG.

[george baker 1Participant @georgebaker1]

Hi

complex history but I ended up doing a job on the Titanium spinal frame that was retrieved with someone’s ashes, so maybe your descendants will get the screws.

 

George

[Michael GilliganParticipant @michaelgilligan61133]

Hopefully, Keele University will get them, along with the rest of my remains, for whatever educational purposes they think fit.

MichaelG.

[JimmieS]

On 31 August 2025 at 19:41 JimmieS Said:

Any ideas of the correct answer?

Correct answer is don’t ask here unless you want to hear endless irrelevant waffle about people’s medical history. Use a search engine:

https://cdn.standards.iteh.ai/samples/12001/1b42a9faa02b49cf8b2eb1abde9f13b5/ISO-5835-1991.pdf

[Speedy Builder5Participant @speedybuilder5]

UNC – Until Next Crack

UNF – Ditto – Fall

BSB – … Stupid Bloke

[DC31k]

On DC31k Said:

On 31 August 2025 at 19:41 JimmieS Said:

Any ideas of the correct answer?

Correct answer is don’t ask here unless you want to hear endless irrelevant waffle about people’s medical history. Use a search engine:

https://cdn.standards.iteh.ai/samples/12001/1b42a9faa02b49cf8b2eb1abde9f13b5/ISO-5835-1991.pdf

🙂

The introductory paragraph to that document ^^^ really says it all.

MichaelG.

 

[Michael GilliganParticipant @michaelgilligan61133]

Just to keep the discussion ‘engineering-focussed’ …

https://www.instron.com/en/industry-solutions/biomedical-testing/orthopedics/bone-screw-testing/

MichaelG.

[JimmieSParticipant @jimmies]

Many thanks for replies – much appreciated.

Jim

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