Menteşe mengenede sabitlendi.

It has a very typical Turkish structure:

• Menteşe = the subject
• mengenede = a location phrase
• sabitlendi = the verb

So the pattern is basically:

Subject + place + verb

Turkish often puts the main verb at the end of the sentence.

Mengene means vise.

The ending -de is the locative case, which usually means in, on, at.

So:

• mengene = vise
• mengenede = in the vise / at the vise

In this sentence, it means the hinge was secured while positioned in the vise.

This is because of two regular Turkish sound rules:

1. Vowel harmony
   The last vowel of mengene is e, so the locative suffix uses e-type vowel:

   • -de or -te, not -da or -ta

2. Consonant voicing
   The noun ends in n, which is a voiced consonant, so the suffix starts with d, not t.

That is why the correct form is mengenede.

Sabitlendi is the verb, and it can be broken down like this:

• sabit = fixed, stable
• sabitle- = to fix, to secure
• sabitlen- = to become fixed / to be fixed / to get secured
• sabitlendi = was secured / got secured

The final -di is the past tense marker.

So the verb shows a completed action in the past.

This is a very common question.

• sabitledi = he/she/it fixed something
  This is an active transitive form. It suggests that some subject did the fixing.

• sabitlendi = it was fixed / it got fixed
  This is the form used when the subject is the thing undergoing the action.

In this sentence, menteşe is the thing being secured, so sabitlendi is the correct choice.

In practice, yes, it is often understood that way in sentences like this.

A natural English translation is often passive: was secured.

But Turkish forms like this can sit somewhere between:

• true passive: was secured
• intransitive/resultative: became secured, got fixed into place

So the exact English wording depends on context, but here was secured is a very natural interpretation.

Because Turkish usually builds this meaning directly into the verb.

In English, you often need more than one word:

• was secured

In Turkish, one verb form can express all of that:

• sabitlendi

So the ideas of secure + past + passive/intransitive sense are packed into a single word.

Turkish does not have articles like English a/an and the.

So menteşe can mean:

• a hinge
• the hinge

Which one is meant depends on context.

That is completely normal in Turkish.

Because Turkish is usually an SOV language:

• Subject + Object/other elements + Verb

Even when there is no direct object, the verb still commonly comes last.

So:

• Menteşe = subject
• mengenede = location
• sabitlendi = verb at the end

That word order is very natural in Turkish.

Yes. Turkish word order is flexible, and changing it usually changes focus or emphasis, not the core meaning.

For example, the original order is neutral and natural:

• Menteşe mengenede sabitlendi.

But another order could emphasize the location more strongly.

Still, for learners, the given sentence is a good standard pattern to follow.

Because it is the subject of the sentence.

Subjects in Turkish are often in the nominative, which usually has no visible ending.

So:

• menteşe = the subject, with no case suffix
• mengenede = location, marked with the locative suffix
• sabitlendi = the verb

That would change the meaning quite a lot.

• mengenede = in the vise
• mengeneye = to the vise

So:

• mengenede sabitlendi suggests the hinge was secured while in the vise
• mengeneye sabitlendi would suggest it was secured to the vise

The original sentence uses mengenede because the idea is location, not direction or attachment target.