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Glossary entry

English term or phrase:

undertapping

Spanish translation:

uso de un tornillo de tamaño inferior

Added to glossary by Neil Ashby
Dec 13, 2015 15:02
8 yrs ago
7 viewers *
English term

undertapping

English to Spanish Medical Medical (general) Orthopedics & Traumatology
Hola, necesito ayuda para traducir esta frase, en un documento sobre técnica quirúrgica PLIF:

"Tap line to line Under-tapping may cause cortical bone stress risers"



¡Gracias!
Proposed translations (Spanish)
3 +1 uso de un tornillo de tamaño inferior
4 un roscado deficiente / demasiado corto o demasiado estrecho
Change log

Jan 19, 2016 09:47: Neil Ashby Created KOG entry

Discussion

Neil Ashby Dec 14, 2015:
What undertap means in orthopedics: "Taps sizes are line to line with their respective screw size. ****To undertap use one size smaller than desired screw size.*****
Drills bottom out at 52.5mm to allow user to drill past the lateral vertebral wall cortex, the additional drilled length will be compensated
during joint compression."
https://www.google.es/url?sa=t&rct=j&q=&esrc=s&source=web&cd...
Neil Ashby Dec 14, 2015:
Next, undertap the pedicle by 0.5mm to 1.0mm of the final screw diameter (Figure 41).
Palpate the tapped pedicle tract with a flexible Sounding/Feeler Probe. Clamp a hemostat to the exposed Sounding/Feeler Probe and measure the length of the hole (Figure 42). Select the appropriate screw diameter and length by both preoperative measurement and intraoperative observation.
https://www.google.es/url?sa=t&rct=j&q=&esrc=s&source=web&cd...
Neil Ashby Dec 14, 2015:
HI alll Kirsten, with respect to yours and Lugoben's last comments, and the expression, "It is important to tap line-to-line to prevent the creation of micro fractures, which can occur when the pilot hole is under-tapped" - We can interpret this as "which can occur WHILE the pilot hole is (BEING) undertapped" - that is, the undertapping is a necessary action to prepare the hole and receive the screw BUT it may cause microfractures if not carried out carefully. (i.e., the "under" doesn't apply to "not enough" but rather "undersized" pilot hole preparation before screw insertion.)

This reference shows the use of "undertapping" as a noun and not an adjective:

"In order for a tap to function in its intended manner, the pitch of the tap should be the same as the pitch of the screw. Undertapping has been shown to increase the pullout force of pedicle screws compared with line-to-line tapping. However, given the way current commercial lumbar pedicle screw systems are designed, undertapping may result in a tap being used that has a different pitch from that of the screw (incongruent pitch)."
http://www.ncbi.nlm.nih.gov/pubmed/25856261
Kirsten Larsen (X) Dec 14, 2015:
Lugoben, si te fijas, en el último mensaje de Cecilia dice que si el orificio se queda "under-tapped", pueden haber "micro fractures" lo cual logicamente no es deseable.
lugoben Dec 14, 2015:
Cecilia y Kirsten El rescado es "under tapped" por una razón válida. Según el extra cotexto en el mensaje tope de este forum, los tornillos S1 requieren que el orificio sea "under tapped" con 5.5 mm de enroscado. Esto indica que el enroscado no es deficiente, más bien es el indicado/sugerido. La razón se desconoce, a menos que el S1 entre 5.5mm dejando el tornillo a sobresalir unos mm por una razón específica que en lugar de hacer el roscadoue le tocaría por su tamaño, se haría un "under tap" al S1. La solución podria ser orificio enroscado corto por diseño o algo por el estilo.
Kirsten Larsen (X) Dec 13, 2015:
Si, efectivamente. Es fácil imaginarse cómo sufriría el hueso con un tornillo que no se ajusta bien.
Cecilia Franetovich (asker) Dec 13, 2015:
Este párrafo también confirma tu razonamiento: "It is important to tap line-to-line to prevent the creation of micro fractures, which can occur when the pilot hole is under-tapped"
Kirsten Larsen (X) Dec 13, 2015:
Pues, doy salida a la respuesta :-)
Cecilia Franetovich (asker) Dec 13, 2015:
Tu razonamiento suena totalmente lógico y acertado, Kirsten, ¡muchas gracias!
Kirsten Larsen (X) Dec 13, 2015:
"Tap and die
Taps and dies are tools used to create screw threads, which is called threading."
https://en.wikipedia.org/wiki/Tap_and_die

"Screw thread
Internal and external threads illustrated using a common nut and bolt. The screw and nut pair can be used to convert torque into linear force. As the screw (or bolt) is rotated, the screw moves along its axis through the fixed nut, or the non-rotating nut moves along the lead-screw.
https://en.wikipedia.org/wiki/Screw_thread

"Roscado
Un roscado o rosca es una superficie cuyo eje está contenido en el plano y en torno a él describe una trayectoria helicoidal cilíndrica."
https://es.wikipedia.org/wiki/Roscado

Entonces concluyo por lógica que "under-tapping" es quedar corto en el tapping, es decir en la elaboración de la rosca.

Bueno, ya me dirás.....
Kirsten Larsen (X) Dec 13, 2015:
¿Puede ser que en la intervención hay que formar primero una rosca en el hueso para luego meter el tornillo? Si es así, "undertapping" es hacer la rosca demasiado poco profunda o demasiado estrecha..... ¿?
Cecilia Franetovich (asker) Dec 13, 2015:
No estoy segura, pero en la memoria del cliente aparece como "orificios roscados/perforados/aterrajados" (¿?)
Kirsten Larsen (X) Dec 13, 2015:
Estoy intentando delimitar la búsqueda. ¿Tú tienes claro lo que son "tapped and untapped pilot holes"? A mi me está costando. Miro la foto y no veo diferencia entre el lado derecho y el lado izquierdo.
http://www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/ti...
Cecilia Franetovich (asker) Dec 13, 2015:
Kirsten: Espero te oriente este párrafo. El documento es un documento de notas sueltas sobre la técnica quirúrgica y no tengo más contexto para darte :(
Kirsten Larsen (X) Dec 13, 2015:
Gracias, Cecilia. Borré mi comentario porque pensé que ya tenía la respuesta, pero qué va. Así de fácil no salen las cosas:-)
Cecilia Franetovich (asker) Dec 13, 2015:
@KirstenL: more context: Identify Shank Entry Points:
• Using a Penfield, visualize and identify the superior most lateral edge of the pars and move 3-5mm medial for shank entry points
• For the cephalad shank, it is important to avoid the adjacent facet capsule and make entry point slightly inferior
• The starting point of S1 screws will be superior and medial to the S1 foramen. The trajectory will be parallel to the sacral endplate at a slight 10° medial to lateral trajectory
• For S1 screws, it is advised to under-tap with the 5.5mm tap and utilize 6.5mm diameter screws

Proposed translations

+1
20 hrs
Selected

uso de un tornillo de tamaño inferior

To be honest I'm not sure whether or not a term exists in Spanish but this source shows that **undertapping** is the use of a screw (or tap) to create a pilot hole with a smaller diameter than the final screw to be placed. >>>>>>
"Taps sizes are line to line with their respective screw size. ****To undertap use one size smaller than desired screw size.*****
Drills bottom out at 52.5mm to allow user to drill past the lateral vertebral wall cortex, the additional drilled length will be compensated
during joint compression."
https://www.google.es/url?sa=t&rct=j&q=&esrc=s&source=web&cd...

And so my attempt would be >>>>>>

El uso linéa-a-linéa de un tornillo [con roscado de un tamaño] demasiado pequeño para preparar el agujero piloto podría causar.....
or
El uso linéa-a-linéa de un tornillo de un tamaño inferior al tornillo final para preparar el agujero piloto podría causar.....

The point is that "undertapping" is intentional, not accidental, although current theories are that it may be detrimental rather than beneficial.



Alignment of pedicle screws with pilot holes: can tapping improve screw trajectory in thoracic spines?

Pedicle screws are placed using pilot holes. The trajectory of pilot holes can be verified by pedicle sounding or radiographs. However, a pilot hole alone does not insure that the screw will follow the pilot hole. No studies have characterized the risk of misalignment of a pedicle screw with respect to its pilot hole trajectory. The objective of this study was to measure the misalignment angles between pedicle screws and pilot holes with or without tapping. Six human cadaveric thoracic spines were used. One hundred and forty pilot holes were created with a straight probe. Steel wires were temporarily inserted and their positions were recorded with CT scans. The left pedicles were tapped with 4.5 mm fluted tap and the right pedicles remained untapped. Pedicle screws (5.5 mm) were inserted into the tapped and untapped pedicles followed by CT scans. The trajectories of pilot holes and screws were calculated using three-dimensional vector analysis. A total of 133 pilot holes (95%) were inside pedicles. For the untapped side, 14 out of 68 (20%) screws did not follow the pilot holes and were outside the pedicles. For the tapped side, 2 out of 65 (3%) did not follow and breached the pedicles.
http://www.ncbi.nlm.nih.gov/pubmed/19526377

HTH

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Note added at 20 hrs (2015-12-14 11:33:24 GMT)
--------------------------------------------------

This fits in perfectly with the context provided by Cecilia in the discussion:
"For S1 screws, it is advised to under-tap with the 5.5 mm tap and utilize 6.5 mm diameter screws."

i.e. Undersized screws are used to tap the pilot hole before placing the final screw.

--------------------------------------------------
Note added at 20 hrs (2015-12-14 11:43:42 GMT)
--------------------------------------------------

Preparación e introducción de los tornillos

Si el hueso es demasiado duro, ****se puede usar el tornillo macho de roscar (tap) adecuado para preparar el canal del tornillo pedicular.**** Los tamaños de tornillos macho de roscar son 4,5 mm/5,5 mm (03807004) y 6,5 mm/7,5 mm (03807005). Están disponibles tornillos macho de roscar modulares de 4,5; 5,5; 6,5 y 7,5 mm (48040154,48040155,
48040156, 48040157) y acanalados de 5,5 y 6,5 mm (48040165 y 48040166).

Los tornillos machos de roscar están calibrados del mismo modo que la
sonda y el sensor. Con las rutas pediculares preparadas y habiendo determinado el largo y diámetro adecuado del tornillo, se prepara el tornillo para su inserción.

Tanto los destornilladores poliaxiales (48041310) y monoaxiales (48041320) proporcionan una conexión muy rígida entre los tornillos poliaxiales y monoaxiales y el destornillador.

https://www.google.es/url?sa=t&rct=j&q=&esrc=s&source=web&cd...

--------------------------------------------------
Note added at 20 hrs (2015-12-14 11:45:56 GMT)
--------------------------------------------------

******uso de un macho [de roscado] de un tamaño inferior......******

--------------------------------------------------
Note added at 20 hrs (2015-12-14 11:49:52 GMT)
--------------------------------------------------

"Our preferred technique is to first place a modified awl with the staple attached. This is followed by a ****tap to undertap by 5 mm of the intended screw diameter***** and then finally the screw is placed."

https://books.google.es/books?id=SfjgnDn71qoC&pg=PA190&lpg=P...
Note from asker:
This is what my client says about "undertapping: Using a smaller diameter tap than the screw". Thaniks!
Peer comment(s):
agree Alice Marchesi
7 days
Thanks Alice, appreciate it
Something went wrong...
4 KudoZ points awarded for this answer.
2 hrs

un roscado deficiente / demasiado corto o demasiado estrecho

..
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