1956PelletL. The first endoprosthesis

In 1954, Leon L. Pellet proposed the first hip joint endoprosthesis with an analog of the ligamentum capitis femoris (LCF) (1956PelletLL). There is an opinion that the 'Evolution of hip joint endoprostheses seems to have ended' (2023KardanovA). In our opinion, in 1954 it gave birth to an extremely promising direction. The idea proved challenging to implement in practice but gave the world a series of original artificial joints. The first review of such endoprostheses, which were described in patents, was published in 2021 and is based on materials available until 2020 (2021ArkhipovSV_SkvortsovDV).

Illustration:

Hip endoprosthesis designed by Leon L. Pellet (1954).

As an analog to LCF, the author suggested using a chain made of stainless steel, a flexible element, or a multi-strand (metal) wire; the drawing from the patent (1956PelletLL; Fig.1) is rotated by us 90°.

REFERENCES

Pellet LL. Hip arthroplasty with flexible securing means. US2765787A August 2, 1954. 1956. [patents.google]

Карданов А. АРТРОЗ ТАЗОБЕДРЕННОГО СУСТАВА - простым языком. 7 февраля 2023. [dzen.ru]

Arkhipov SV, Skvortsov DV. Ligamentum Teres and its Analog in the Hip Endoprosthesis–Necessary or Superfluous? A Systematic Review. MLTJ. 2021:11(2)301-10. [researchgate.net]

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keywords: ligamentum capitis femoris, ligament of head of femur, ligamentum teres, hip joint, hip, круглая связка, endoprosthesis.

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ENDOPROSTHESES AND IMPLANTS

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Tweet of June 20 2025

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