2016ArkhipovaAS Classification of Joints with Flexible Elements.

Classification of Joints with Flexible Elements

The classification of joints with flexible elements was first proposed by A.S. Arkhipova in 2016 and presented at conferences in 2016-2017 (2017АрхиповаАС).

Joints with flexible elements are divided by the author into detachable and non-detachable, three-axis, two-axis, and single-axis. Each can contain in various combinations one or more external and internal flexible elements - analogs of joint ligaments, including the ligamentum capitis femoris (LCF).

Conditional designations of joints with flexible elements using the example of a ball joint:

Detachable ball joint with an internal flexible element

Non-detachable ball joint with an internal flexible element

Detachable ball joint with an external flexible element

Non-detachable ball joint with an external flexible element

Detachable ball joint with both internal and external flexible elements

Non-detachable ball joint with both internal and external flexible elements

Flexible elements can be used to secure the head in the socket, as well as to change the trajectory and range of motion of the joint. The length of the flexible elements and the location of their attachment points play an important role. Joints with flexible elements can be used inin pedipulators of walking machines, robots, and exoskeletons, as well as in endoprosthetics of human and animal joints.

Author and Organization:

Arkhipova Alexandra Sergeevna

Currently (2024) a 6th-year student at the MSU Faculty of Mechanics and Mathematics (Механико-математический факультет Московского государственного университета имени М.В. Ломоносова)

References:

Arkhipova AS. Study of properties of joints with flexible elements for biomorphic walking technology. Research work, conducted at the Lyceum of Scientific and Engineering Profile. Korolev, 2016. [in Russian] (Архипова АС. Изучение свойств шарниров с гибкими элементами для биоморфной шагающей техники. Научно-исследовательская работа, выполненная в АОУ Лицей научно-инженерного профиля. Королёв, 2016.)

Arkhipova AS. Study of properties of joints with flexible elements for biomorphic walking technology. Presentation of the report. Moscow, 2017. [in Russian] (Архипова АС. Изучение свойств шарниров с гибкими элементами для биоморфной шагающей техники. Презентация доклада. Москва, 2017.)

Keywords:

joints with flexible elements, classification

In translating to English, the author is assisted by ChatGPT (version 3.5) and the Google Translate service.

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Inferior Portal

Original in Russian is available at the link: Нижний портал , below is a machine translation edited by a non-native speaker. Inferior portal FOR HIP ARTHROSCOPY: A PILOT STUDY Arkhipov S.V., Independent Researcher, Joensuu, Finland Introduction Hip arthroscopy is considered a complex and expensive surgical procedure (2015SalasAP). However, it provides a dynamic and accurate assessment of the hip joint, and is recognized as the gold standard for diagnostics (2018JamilM_WittJ). Hip arthroscopy may be one of the last frontiers in sports medicine (2019MaldonadoDR_DombBG). Fig. 1. Compartments of the hip joint (schematic); the central compartment is highlighted in red, the peripheral compartment is highlighted in blue (from 1892PoirierPJ , unchanged). Traditionally, arthroscopic surgeons of the hip joint distinguish three compartments: the central compartment, the peripheral compartment, and the lateral compartment outside the joint, also known as the peritro...

Acetabular Canal. Part 3.

Acetabular Canal . Part 3 S.V. Arkhipov, Independent Researcher, Joensuu, Finland Abstract This article describes the space where the ligamentum capitis femoris (LCF) attaches and functions. See also Part 1 and Part 2 . The Significance of the Acetabular Canal The acetabular canal contains the main areas of attachment for the LCF (ligamentum capitis femoris). Its distal end attaches to the femoral head, while the proximal end connects to the fossa and notch of the acetabulum. The primary purpose of the acetabular canal is to ensure the normal functioning of the LCF. Normally, the LCF should not come into contact with the joint surfaces. Therefore, the length of the LCF should not exceed the diameter of the acetabular fossa, i.e., the diameter of the central section of the acetabular canal Its depth should be less than the thickness of the LCF. Figure 1. Lateral wall of the acetabular canal and LCF; the bottom of the acetabulum is removed (from 1908GrayH )...

2012MansmannKA

Invention (Patent Application Publication): Mansmann KA. Tendon-sparing implants for arthroscopic replacement of hip cartilage. WO2012162571A1 (2012). The original text of the document contained defects. WO2012162571A1S US Inventor: Kevin A. Mansmann Worldwide applications 2012 WO Application PCT/US2012/039481 events: 2012-05-24 Application filed by Mansmann Kevin A 2012-11-29 Publication of WO2012162571A1 Tendon-sparing implants for arthroscopic replacement of hip cartilage Kevin A. Mansmann Abstract Surgical implant devices are disclosed which will allow completely arthroscopic resurfacing of the acetabular socket, and the femoral head, in hip joints, in both humans, and in animals such as dogs. Such devices, made of flexible polymers with smooth articulating surfaces and porous anchoring surfaces, can be provided with centered openings, to allow a surgeon to spare the major ligament (the ligamentum teres) which connects the femoral head to the pelv...

1998AlkalayD_MellerI

Abstract of the article Alkalay D, Kollender Y, Mozes M, Meller I. Transarticular tumor invasion via ligamentum teres: A clinical-pathologic study of 12 patients (1998). The authors suggest that ligamentum capitis femoris (LCF) is a potential route for potential route for transarticular spread of a tumor. Quote 1. Abstract We studied 12 patients who were operated on for malignant tumors in and around the hip joint. A correlative study, including preoperative staging studies and anatomical-pathologic aspects of the hip joint, was performed. in 4 of the 12 patients, we found direct histologic evidence of tumor invasion from the head of the femur through the ligamentum teres to the acetabular fovea and vice versa. It seems that the ligamentum teres is a potential route for transarticular spread of a tumor. External links Alkalay D, Kollender Y, Mozes M, Meller I. Transarticular tumor invasion via ligamentum teres: A clinical-pathologic study of 12 patients. Acta Orthopaedica S...

1858GrayH

Fragments from the book Gray H. Anatomy, descriptive and surgical (1858, first edition ). The selected passages of the "classical" anatomy of the ligamentum capitis femoris (LCF) and original illustrations of Henry Carter. Quote p. 8 1 The cotyloid cavity or acetabulum, is a deep cup-shaped hemispherical depression; formed internally by the pubes, above by the ilium, behind and below by the ischium, a little less than two-fifths being formed by the ilium, a little more than two-fifths by the ischium, and the remaining fifth by the pubes. It is bounded by a prominent uneven rim, which is thick and strong above, and serves for the attachment of a fibro-cartilaginous structure, which contracts its orifice and deepens the surface for articulation. It presents on its inner side a deep notch, the cotyloid notch, which transmits the nutrient vessels into the interior of the joint, and is continuous with a deep circular depression at the bottom of the cavity: this depression...

2005MorA

Invention (Patent Application Publication): Mor A. Replacement ligamentum teres femoris. US20050131546 A1 (200 5 ). US20050131546A1 Israel Inventor: Amit Mor Current Assignee: Individual Worldwide applications 2003 US Application US10/734,123 events: 2003-12-15 Application filed by Individual 2003-12-15 Priority to US10/734,123 2005-06-16 Publication of US20050131546A1 2024-08-07 Assigned to NEWCLEO SA Status: Abandoned Replacement ligamentum teres femoris Amit Mor Abstract A hip joint prosthesis including a replacement ligamentum teres femoris. The replacement ligamentum teres femoris may be attached to a replacement (or natural) femoral head and/or to a replacement (or natural) acetabular structure. Description FIELD OF THE INVENTION [0001] The present invention relates generally to an enarthrodial prosthesis, and particularly to a replacement ligamentum teres femoris for a hip joint prosthesis. BACKGROUND OF THE INVENTION [0002] The hip join...

1844CruveilhierJ

Fragments from the book Cruveilhier J. The Anatomy of the Human Body (1844). The author discusses the anatomy and role of the ligamentum capitis femoris (LCF). Quote p. 94 The head (i, figs. 49 and 50) is the most regularly spheroidal of all the eminences in the skeleton, and forms nearly two thirds of a sphere. In the middle of it we observe a rough depression (k) of variable dimensions, which gives attachment to the round ligament. Quote pp. 159-162 COXO-FEMORAL ARTICULATION (fig. 76). Preparation. Remove with care all the muscles that surround the joint, preserving the reflected tendon of the rectus femoris. The psoas and iliacus muscles, the synovial capsule of which so often communicates with the articular synovial membrane, must be removed with particular care. After the fibrous capsule has been studied upon its external surface, a circular division should be made round its middle portion, for the purpose of uncovering the deep-situated parts. This articulation is the ...

2015BoroumandS_HalwaiI

Invention (Patent Application Publication): Boroumand S, Halwai I. Tanab-Ligament (Eine bandartige Struktur, die die Luxation einer Gelenkprothese verhindert.) [Tanab-Ligament (A ligamentous structure that prevents the dislocation of a joint prosthesis)]. DE202015006363U1 (2015). Translation into German. DE202015006363U1 Germany Inventors: Boroumand Sara, Halwai Iman Current Assignee: Individual Worldwide applications 2015 DE Application DE202015006363.2U events: 2015-09-09 Application filed by Individual 2015-09-09 Priority to DE202015006363.2U 2015-10-22 Publication of DE202015006363U1 Status: Expired - Lifetime 2025-09-10 Anticipated expiration Tanab-Ligament (A ligamentous structure that prevents the dislocation of a joint prosthesis) Boroumand Sara, Halwai Iman Abstract The combination of a joint endoprosthesis and a band-like, cord-like structure. Description 1. Beschreibung einer Endoprothese [0001] Endoprothesen (gr...

2010MarissenR

Invention (Patent Application Publication): Marissen R. Hinge structure. WO2010146039A1 (20 1 0). WO2010146039A1 Netherlands Inventor: Roelof Marissen Worldwide applications 2010 US EP WO JP Application PCT/EP2010/058354 events: 2010-06-15 Application filed by Dsm Ip Assets B.V. 2010-06-15 Priority to JP2012514496A 2010-06-15 Priority to EP10725433A 2010-06-15 Priority to US13/376,459 2010-12-23 Publication of WO2010146039A1 Hinge structure Roelof Marissen Abstract The invention relates to a three-dimensional hinge (100) comprising a first rigid body (10), a second rigid body (20) and a joint member. The joint member connects the first rigid body (20) and the second rigid body (20). The joint member comprises at least three base connectors (32,33,34), each base connector connected to the second rigid body (20) at respective connection point (22, 23, 24) and engaging with an engaging portion of the first rigid body. Description The invention relates to a hing...

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