Two questions, and people only ask the first
Almost everyone arrives here asking whether they can get in. It is the right question and it is the smaller one. Accession is a single review against a written standard; service is years of boots, rucks and a rhythm you do not control. I served in the US Army on two treated clubfeet, so the ordinary Tuesday is something I know from the inside.
Where are you in this?
Sixteen pages. Tell it where you are standing and the list shortens, or leave the chips alone and read the lot.
All seventeen pages
No page matches that combination. Clear the chips, or start with the standard itself. Most questions here resolve into it sooner or later.
The gap nobody plans for
Accession review is a snapshot. Somebody looks at your leg, reads whatever documentation you brought, applies a written standard and returns an answer. It happens on one day, and it either goes your way or it does not.
Service is a different kind of test entirely: the same demand, repeated, for years, at a tempo you have almost no say over, and with your ability to manage your own body largely taken away. Nobody with an altered gait gets through a recruiting office by accident. Plenty get through it and then discover that the part they should have prepared for was never mentioned.
The medical review is a gate. Deployability is the whole rest of the corridor.
Function is the currency
A recurring frustration across this cluster: people expect the review to turn on their diagnosis, and it mostly turns on what their leg does. Two applicants can carry identical words in their notes (bilateral clubfoot (club foot, talipes), surgically treated) and one walks through while the other is disqualified, because one has a foot that tolerates a boot and a ruck and the other does not.
That is genuinely good news if you hold documentation of function, and awkward if all you hold is a diagnosis. The pages under Before you start and The standard itself both work from that angle, and they are worth reading in that order.
One veteran, not a recruiter
I served in the US Army on two treated clubfeet. That matters for how you read these pages: I can tell you what boots and rucks do to an altered foot from the inside.
Nothing here is a determination. Standards sit in a Department of Defense instruction, get applied by military medical staff, and are revised periodically; waiver practice also shifts with what a service needs in a given year. Treat all of this as orientation that helps you ask sharper questions of the people who actually decide.

People also ask
Serving with altered mechanics
Can you join the military with a lower-limb difference?
What does the military actually assess?
Is getting in the hard part?
Do I have to disclose my medical history?
Which branch is easiest?
Where should I start?
Sources