First of all, this is what we call CONTEXT

Мария, вопросы надо задавать так, чтобы не нам надо было искать по интернету
КОНТЕКСТ ваш я не вижу - тысячи и один раз уже сказали.
И не повредит, если напишете, о чем собственно идет речь. Потому что текст очень мало общего имеет с клиническим исследованием, это хирургия или травматология

https://musculoskeletalkey.com/perioperative-lower-extremity...

Pudendal nerve injury (S2–S4)
Incidence
Amarenco and colleagues calculated a total incidence of 2% of pudendal nerve injury secondary to an orthopedic operation. In hip arthroscopy, pudendal nerve injury may occur in as many as 10% of cases. Locker and Beguin reported the first 2 cases of pudendal neurapraxia in hip arthroscopy. Glick and colleagues reported 4 pudendal nerve injuries in a series of 16 arthroscopies. Funke and Munzinger reported 1 pudendal nerve injury in 19 cases. A meta-analysis by Byrd found 10 neurapraxias in 1491 cases.

Predisposing factors
This nerve is most vulnerable to injury at its distal anatomic course, where it runs upwards toward the pubic symphysis.

Mechanism of injury
Nerve compression is the most likely pathophysiological mechanism. When looking at pudendal neuropathy after femoral nailing, Brumback and colleagues measured the pressure applied on the perineum and found a significant difference in the pressure/operative time ratio between groups with and without pudendal neuropathy (73 kg/h vs 35 kg/h, respectively). They did not find a significant difference, however, in the operative time (168 minutes vs 158 minutes). The suggested mechanism of injury during hip arthroscopy might be compression of the rami during traction against the perineal post.

Clinical presentation
Initially, there may be perineal and groin pain followed by a sensory deficit. In some cases, this deficit is associated with sexual disorders, such as impotence or anejaculation.

Prevention and treatment
Recommendations for prevention or reducing the risk of pudendal nerve injury include limiting traction to only critical operative moment of operation and the use of good padding on the foot plate and in the perineum. Lindenbaum and colleagues showed that pressure on the perineum can be reduced by using a perineal post with a bigger diameter that provides better force distribution. The recommended diameter of the perineal post is 8 to 10 cm. The ideal position of this perineal post is between the intact lower limb and the external genital organs. Another recommended preventive measure is the ventral decubitus position on the fracture table.


https://kinesiopro.ru/blog/pudendalnaja-nevralgija/
https://ru.wikipedia.org/wiki/Срамной_нерв

See the images

https://books.google.hu/books?id=EufmDwAAQBAJ&pg=PA328&lpg=P...

https://www.medicalexpo.ru/prod/schmitz-soehne-gmbh-co-kg/pr...

Опорная пластина (горизонтальное позиционирование),

Новое в травматологии и ортопедии - page 88-89
Неполные внутрисуставные переломы (33 В1-3, 11 человек, 12 %) требовали открытой репозиции с фиксацией компрессирующими винтами, а в ряде случаев, с использованием опорных пластин для малых сегментов.


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Note added at 3 óra (2022-03-01 02:05:26 GMT)
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In memoriam Dr. Csákány M. György