Perhaps the addition of the extra phrase ἀμφότεροι οἱ καρποὶ τῶν χειρῶν αὐτοῦ is a marginal interpolation, or perhaps it is a way of clarifying that the "wrists" were not meant, but what other "wrists" are there? Why is הַמִּפְתָּ֔ן lexically untranslated? The phrase ἐπὶ τὰ ἐμπρόσθια αμαφεθ seems like a clumsy back translation of ἐπὶ τὸ πρόθυρον.1 Kings 5:4 wrote:καὶ ἐγένετο ὅτε ὤρθρισαν τὸ πρωί καὶ ἰδοὺ Δαγων πεπτωκὼς ἐπὶ πρόσωπον αὐτοῦ ἐνώπιον κιβωτοῦ διαθήκης κυρίου καὶ ἡ κεφαλὴ Δαγων καὶ ἀμφότερα τὰ ἴχνη χειρῶν αὐτοῦ ἀφῃρημένα ἐπὶ τὰ ἐμπρόσθια αμαφεθ ἕκαστον καὶ ἀμφότεροι οἱ καρποὶ τῶν χειρῶν αὐτοῦ πεπτωκότες ἐπὶ τὸ πρόθυρον πλὴν ἡ ῥάχις Δαγων ὑπελείφθη
וַיַּשְׁכִּ֣מוּ בַבֹּקֶר֮ מִֽמָּחֳרָת֒ וְהִנֵּ֣ה דָג֗וֹן נֹפֵ֤ל לְפָנָיו֙ אַ֔רְצָה לִפְנֵ֖י אֲר֣וֹן יְהוָ֑ה וְרֹ֨אשׁ דָּג֜וֹן וּשְׁתֵּ֣י ׀ כַּפּ֣וֹת יָדָ֗יו כְּרֻתוֹת֙ אֶל ־ הַמִּפְתָּ֔ן רַ֥ק דָּג֖וֹן נִשְׁאַ֥ר עָלָֽיו ׃
The entire section seems badly and unidiomatically translated. Do others have a different take on it?
Cf. παλάμη "palm". σφυρόν "ankle".