Skip to main content

1978DavidT

 

Invention (Patent): David T. Prosthetic device for use as a hip joint US4092741 (1978).

 

US4092741A United States
Inventor: Thomas David
Current Assignee: Firma Ludwig Bertram GmbH & Co. KG, Hannover, Germany
Worldwide applications 1977 US
Application US05/821,174 events:
1975-06-26 Priority claimed from AT494175A
1977-08-02 Application filed by Firma Ludwig Bertram GmbH & Co.
1978-06-06 Application granted
1978-06-06 Publication of US4092741A
1995-06-06 Anticipated expiration
Status: Expired - Lifetime

 

PROSTHETIC DEVICE FOR USE AS A HIP JOINT

This is a division of application Ser. No. 699,841, filed

June 25, 1976, now abandoned.

 

Abstract

A prosthetic device for use as a hip joint comprises a substantially spherical portion locatable in the acetubular fossa of a pelvis bone, and a longitudinal portion locatable in a thighbone. The spherical portion is anchored within the fossa by a holding member which is fixed to the fossa.

 

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention.

The invention relates to a prosthetic device for use as a hip joint.

2. Description of the prior art.

There has been proposed a prosthetic device for use as a hip joint comprising a substantially spherical portion anchorable in the acetabular fossa of a pelvis bone, and an elongate portion, anchorable in a thighbone, and which is directed at an angle towards the substantially spherical portion.

To insert such a prosthetic device it is necessary to fit and anchor an artificial fossa in the pelvis bone, in an area of this bone which is very thin-walled. For this purpose, it is necessary, in the course of laborious surgical work, to produce a rear-cut recess in the pelvis bone, and this is impeded to a large extent by the muscular tissue which is particularly strong in this area. For this reason aso, it is difficult and laborious to produce a reliable anchorage of the device on the pelvis bone

 

SUMMARY OF THE INVENTION

According to the present invention, there is provided a prosthetic device for use as a hip joint, said device comprising a substantially spherical portion engageable in the acetabular fossa of a pelvis bone, a longitudinal portion anchorable in a thighbone, and inclined with respect to said substantially spherical portion, and at least one holding member locatable in the pelvis bone for anchoring the spherical portion in the fossa.

The manipulations which are necessary for the actual fitting of the device, and which have to be carried out from the outside of the pelvis bone, are optimally simplified, as a result of which the fixing of a suitable holding member can be carried out advantageously from the inside of the pelvis bone which is relatively accessible and is not hindered by the muscular tissue of the thigh and the hip.

In one preferred embodiment of the invention, the holding member is inserted from the side situated oposite the fossa, and therefore from the inside of the pelvis bone, into a hole which passes through the pelvis bone and which is made beforehand; the holding member can, for this purpose, have a shaft which extends through the hole and a fixing head which engages the internal side of the pelvis bone, that is the side opposite the fossa.

The device can be fixed in any desired manner to the shaft. Advantageously, the shaft of the holding member has a threaded hole onto which it is possible to screw an externally threaded shaft of a preferably metallic fixing member forming part of the substantially spherical portion of the device which consists of an elastic material. Since the device consists substantially of an elastic material, the possibility is afforded of inserting the device and fixing it in the pelvis bone in a particularly simple manner as will now be described.

After an operation has exposed the fossa of the pelvis bone, first of all at least one hole is formed through the pelvis bone, for example by drilling. The shaft of the holding member is introduced into this hole, from the inside of the pelvis bone opposite the fossa until the fixing head lies on the pelvis bone. Then the shaft of the fixing member of the spherical portion of the device is screwed into the threaded hole of the shaft of the fixing member; during this stage the longitudinally-extending portion of the device is resiliently deformed to such an extent that it extends substantially along the axial direction of the threaded hole, and can be used as a grip during screwing. Then the longitudinally-extending portion of the device is introduced axially into a recess prepared in the thighbone and is anchored therein by subsequent growth of the surrounding tissue.

In another preferred embodiment of the invention, the substantially spherical portion of the prosthetic device consists of metal or other rigid material, pivotally mounted in a housing fixed by at least one holding member, which housing comprises a support portion in the form of a part-spherical cup and a closure portion forming a cover for the cup. This housing is fixed for example in the fossa of the pelvis bone by means of several screws or similar fixing members, sunk in, and preferably extending substantially radially from the cup. Since the device consists not of an elastic material but of a rigid material, the method of inserting this device is also different as will now be described.

After an operation has exposed the fossa of the pelvis bone, at least one hole is formed in the pelvis bone for example by drilling. By means of a screw or like holding member located in this hole from the outside of the pelvis bone, and embedded into the support portion, the support portion of the housing is fixed in the fossa. The spherical portion of the device is then inserted into the cup, the longitudinally-extending portion of the device having been screwed in beforehand into the thighbone after the closure portion of the housing has been pushed onto the longitudinally-extending portion. Finally the closure portion is secured on the supporting portion to hold the spherical portion in the housing.

This alternative embodiment is rather more complicated to install than the first embodiment and will normally be used only in cases in which the stresses imposed on the device are such that a device formed mainly of plastics material would be liable to deformation during use.

 

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments of the invention will now be further described, by way of example only with reference to the accompanying diagrammatic drawings, in which:

FIG. 1 is a section through the first embodiment of the prosthetic device, the device being composed substantially of elastic plastic material;

FIG. 2 is a section through the second embodiment of the of the device, the device being composed of metal or other rigid material; and

FIG. 3 is a section taken on line III--III of FIG. 2.

 

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The prosthetic device shown in FIG. 1 comprises a substantially spherical portion 3 fixed in the fossa 1 of a pelvis bone 2, and a longitudinally-extending shank portion 5, which is pivotable as a result of the elasticity of the plastic material and which is fixed in a thighbone 4. The prosthetic device is a substantially one-piece construction composed of a biologically compatible plastics material of composition known per se, for example a medicinal silicone of the hard type. The spherical portion 3 is fixed to a holding member 7 passing through a hole 6 in the pelvis bone 2, the member 7 being introduced into the hole 6 from the side opposite the fossa 1, and therefore from the inside of the pelvis bone 2. For this purpose the holding member 7 has a shaft 8 which is inserted into the hole 6, and which is provided with a fixing head 9 applied against the inside of the pelvis bone 2.

The shaft 8 of the holding member 7 has a threaded hole 10 in which is screwed a shaft 12, provided with an external thread 11, of a preferably metallic fixing member 13 of the spherical portion 3. This metallic fixing member 13 is embedded in the plastics material forming the spherical portion 3 of the device, preferably by casting the plastics material of the portion 3 around the fixing member 13. The fixing member is preferably provided with notches or other formations on its surface to improve the anchorage between the fixing member and the plastics material of the spherical portions. The spherical portion 3 of the device is supported in the fossa 1 of the pelvis bone 2 with a play of about 1 to 2 mm.

The insertion of this prosthetic device has been described above. The longitudinally-extending portion 5 can be deformed and pivoted to such an extent that it can be used as a grip for screwing the shaft 12 into the threaded hole 10 of the shaft 8. In this way the insertion of the device is very simple and is not impeded to any great degree by the presence of the muscular tissue above the thighbone.

The zone of connection between the spherical portion 3 and of the longitudinally-extending portion 5 is subject to relatively high stresses and may suffer -- when the stresses are pronounced -- an elastic deformation, although this may only be slight. If it is absolutely necessary to prevent this alteration of shape, the prosthetic device can be made of a rigid material, for example metal, as shown in FIGS. 2 and 3.

In this embodiment, the substantially spherical portion 3 of the device is preferably made of metal or similar rigid material, and anchored in the fossa 1 of the pelvis bone 2, is rotatably mounted in a housing 15, preferably composed of plastics or the like. The housing 15 comprises a support 16 in the form of a part-spherical cup and a closure portion 17 forming a cover for the cup. The closure portion 17 is fixed by means of screws 18 or other removable securing means distributed at regular intervals around the periphery of the closure portion 17 and engaged with the support portion 16.

The housing 15 is fixed in the fossa 1 of the pelvis bone 2 by holding members 14 in the form of screws 19 or other suitable securing means, extending substantially radially with respect to the support portion 16, and embedded in the inner wall of the support portion 16.

The longitudinally-extended portion 5 of the device has a thread 20 and is axially screwed in the thighbone 4, while the threads slightly engage into the compacta of this bone which gradually grows around the thread 20 whereby the portion 5 is rigidly anchored. The method of insertion of this prosthetic device has also been already described in detail above.

The prosthetic device may be formed from materials other than those particularly described and the shape and configuration of the various parts may be different from that shown, for example the fixing member embedded in the plastics material of the spherical portion 3 may have any regular or irregular profile.

I claim:

1. A hip joint prosthesis comprising a substantially spherical portion capable of being anchored in the acetubular fossa of a pelvic bone, a shank portion capable of being anchored in a femur, the spherical portion and the shank portion being integral and being com posed of an elastic material, fixing means associated with the spherical portion, and at least one holding member co-operable with the fixing means to anchor the spherical portion in the fossa, said holding member being anchorable in the pelvic bone by being inserted into a hole, previously made through the pelvic bone, from the side opposite the fossa and said holding member comprising a shaft for insertion into the hole in the pelvic bone, and a fixing head on the shaft engageable against the side of the pelvic bone opposite the fossa, the shaft of the holding member having a threaded hole and the fixing means comprising a fixing element having a threaded shaft extending from the spherical portion and engageable in the threaded hole.

2. A prosthesis according to claim 1, wherein the fixing element has an anchoring portion and the flexible material forming the spherical portion of the prosthesis is cast around the anchoring portion of the fixing element whereby to anchor the fixing element to the spherical portion.

3. A prosthesis according to claim 2, wherein the flexible material is a plastics material and the fixing element is a metal element.

References Cited

U.S. PATENT DOCUMENTS

2,765,787 10/1956 Pellet 128/92 CA

3,067,740 12/1962 Haboush 128/92 CA

3,893,196 7/1975 Hochman 3/1.913 X

FOREIGN PATENT DOCUMENTS

1,047,640 7/1953 France 128/92 C

OTHER PUBLICATIONS

McBride Type (Door Knob) Hip, Advertisement Page 4 by Austenal Labs, Inc., The Journal of Bone & Joint Surgery, Jan. 1952.

Primary Examiner - Ronald L. Frinks

Attorney, Agent, or Firm-Larson, Taylor and Hinds





External links

David T. Prosthetic device for use as a hip joint US4092741A June 26, 1975. 1978.  patents.google


Authors & Affiliations

Thomas David, Vienna, Austria


Publications of invention

AT335050 (B)
ATA494175 (A)
BE843210 (A)
CA1054303 (A)
CH604684 (A5)
DE2623628 (A1)
DE2623628 (B2)
DE2623628 (C3)
DK139213 (B)
DK139213 (C)
DK288876 (A)
FR2316912 (A1)
FR2316912 (B1)
GB1499700 (A)
JPS524693 (A)
JPS57818 (B2)
NL158380 (B)
NL7606961 (A)
US4092741 (A)
1978DavidT


Keywords

ligamentum capitis femoris, ligamentum teres, ligament of head of femur, endoprosthesis, prosthesis, invention, unipolar, subtotal


                                                                    

NB! Fair practice / use: copied for the purposes of criticism, review, comment, research and private study in accordance with Copyright Laws of the US: 17 U.S.C. §107; Copyright Law of the EU: Dir. 2001/29/EC, art.5/3a,d; Copyright Law of the RU: ГК РФ ст.1274/1.1-2,7


ENDOPROSTHESES AND IMPLANTS




Labels:

Comments

Post a Comment

Popular posts from this blog

Test catalog of the LCF pathology

  Test catalog of the ligamentum capitis femoris pathology By Sergey V. Arkhipov, MD, PhD     CONTENT [i]   Abstract [ii]   Introduction [iii]   Testing in the supine position [iv]   Testing in a standing position [v]   Gait study [vi]   References [vii]   Application [i]   Abstract A description of tests for the detection and differential diagnosis of ligamentum capitis femoris (LCF) pathology is presented. [ii]   Introduction One of the first studies devoted to the diagnosis of LCF injury demonstrated a variety of symptoms: groin pain, hip stiffness, sometimes long-standing minimal clinical findings, or signs similar to osteoarthritis (1997GrayA_VillarRN). More than a decade later, researchers concluded: "Unfortunately, there is no specific test for detecting LCF tears." The signs known at that time were nonspecific and were also observed in other intra-articular pathologies of the hip joint (2010CerezalL_Pérez-CarroL). The a...
Post a Comment
Read more

Who, When, and Where Wrote the Book of Genesis?

  Who, When, and Where Wrote the Book of Genesis?  A Medical Hypothesis By Sergey V. Arkhipov, MD, PhD & Lyudmila N. Arkhipova, BSN     CONTENT [i]   Abstract [ii]   Introduction [iii]   Egyptian physician [iv]   Asian diviner [v]   Conclusion [vi]   References [vii]   Application [i]   Abstract The Book of Genesis is an example of an ancient literary text that contains important medical insights. We propose that it was written in northern Egypt in the late 17th century BCE, approximately ten years after the Minoan eruption. The protograph likely emerged from the collaboration between an Asiatic seer, who rose to the rank of an Egyptian official, and an Egyptian physician-encyclopedist. By refining its dating and authorship, this hypothesis positions Genesis as a credible source of medical and historical data, thereby enhancing its value for interdisciplinary research. [ii]   Introduction According to Rabbinic Judais...
Post a Comment
Read more

Catalog. LCF of Extinct Species

Discussion of the LCF and morphological signs of its existence in extinct species.   Funston, G. F. (2024). Osteology of the two-fingered oviraptorid Oksoko avarsan (Theropoda: Oviraptorosauria). Zoological Journal of the Linnean Society, zlae011. [ academic.oup.com ] Hafed, A. B., Koretsky, I. A., Nance, J. R., Koper, L., & Rahmat, S. J. (2024). New Neogene fossil phocid postcranial material from the Atlantic (USA). Historical Biology, 1-20. [ tandfonline.com ] Kuznetsov, A. N., & Sennikov, A. G. (2000). On the function of a perforated acetabulum in archosaurs and birds. PALEONTOLOGICAL JOURNAL C/C OF PALEONTOLOGICHESKII ZHURNAL, 34(4), 439-448. [ researchgate.net ] Romer, A. S. (1922). The locomotor apparatus of certain primitive and mammal-like reptiles. Bulletin of the AMNH; v. 46, article 10. [ digitallibrary.amnh.org  ,  digitallibrary.amnh.org(PDF) ]    Słowiak, J., Brusatte, S. L., & Szczygielski, T. (2024). Reassessment of the enigmati...
Post a Comment
Read more

18th Century

  18th Century Catalog of archived publications of the specified period        1700-1709 1705PetitJL  The author writes about anatomy, role, and damage of the LCF in hip dislocation.  1705RuyschF  The author  describes the anatomical preparation containing the LCF, notes its areas of attachment, geometric and mechanical properties.  1706PolluxJ   The author refers to LCF as "νεῦρον" and also points out the synonym "ἰσχίον". 1709PetitJL   The author discusses the anatomy, role and damage of the LCF in hip dislocation, and also mentions the principle of treatment.  1710-1719 1715MunnicksJ   The author describes the attachment, shape, role of the LCF, and discusses subluxation of the hip. 1717HermannD  The author indicates the distal area of attachment of the LCF and uses a rare synonym. 1720-1729 1720RuyschF  The author draws attention to the well-developed blood supply of the acetabular fossa, as well as the ...
Post a Comment
Read more

1836-1840PartridgeR

  «Prof. Partridge in his lectures on anatomy at King's College was accustomed to compare the Ligamentum Teres, in its function, to the leathern straps by which the body of a carriage is suspended on springs » ( 1874SavoryWS ). Perhaps Nikolai Pirogov listened to these lectures ( 1859PirogoffN ).   The analogy that Richard Partridge used could have arisen after reading the monograph Bell J. The Principles of Surgery (1801) . In it, the author depicted a cart and a pelvis resting on the head of one and two femurs. However, there is no mention of ligamentum capitis femoris (LCF) in the chart descriptions. References Savory WS. On the use of the ligamentum teres of the hip joint. J Anat Physiol. 1874;8(2)291-6.    [ ncbi.nlm.nih.gov  ,    archive.org ] Pirogoff N. Anatome topographica sectionibus per corpus humanum congelatum triplici directione ductus illustrate. Petropoli: Typis Jacobi Trey, 1859.   [ books.google  ,   archive.org ] ...
Post a Comment
Read more

Key Role of the LCF

  In the experiments conducted on the pelvis-femur-muscle-ligaments model, we found that when the contralateral pelvic drop occurs, the ligament of the head of femur become maximally tense; simultaneously, there is relaxation and lengthening of the gluteus medius muscle; the pelvis spontaneously rotates towards the stance limb (forward), and the load on the hip joint decreases. Thanks to the functioning of the ligament of the head of femur the walking is smooth, rhythmic, and energy-efficient. Track Music:  Blue Dot Sessions , Vittoro (CC BY-NC 4.0 DEED / fragment)  "Take care of the ligament of the head of femur for yourself and your neighbor!" .                                                                       . keywords: ligamentum capitis femoris, ligament of head of femur, ligamentum te...
Post a Comment
Read more

2025ChenJH_AcklandD

  The article by Chen JH, Al’Khafaji I, Ernstbrunner L, O’Donnell J, Ackland D. Joint contact behavior in the native, ligamentum teres deficient and surgically reconstructed hip: A biomechanics study on the anatomically normal hip (2025). The authors experimentally demonstrated the role of the ligamentum capitis femoris (LCF) in unloading the upper sector of the acetabulum and the femoral head. The text in Russian is available at the following link: 2025ChenJH_AcklandD . Joint contact behavior in the native, ligamentum teres deficient and surgically reconstructed hip: A biomechanics study on the anatomically normal hip By  Chen JH, Al’Khafaji I, Ernstbrunner L, O’Donnell J, Ackland D.     CONTENT [i]   Abstract [ii]   Introduction [iii]   Materials and methods [iv]   Results [v]   Discussion and Conclusion [vi]   References [vii]   Application [i]   Abstract Background The ligamentum teres is known to contribute to hip joint st...
Post a Comment
Read more

MYTHS AND MISCONCEPTIONS

  MYTHS AND MISCONCEPTIONS ( Erroneous and folkloric beliefs, folk and traditional stories...)  LCF in English Bibles   The first written mention of the LCF in humans is found in the  ancient Hebrew book – Bereshit (Genesis). In English translations of the Bible, LCF is denoted by various terms, often not explicitly referring to the «ligament».  The Shortest Comments on Genesis, Chap. XXXII-XXXIII  In the selected excerpt, the symptoms, mechanism, and differential diagnostic test for the injury to LCF are provided, along with details about the circumstances, time, and place of the biblical trauma.  1609-1583bcProtoBereshit  Hypothesis: in the work of fiction, an unknown physician-encyclopedist for the first time pointed out damage to the LCF as a cause of gait disturbance.  922-722bcElohist  A variant of the oldest description of damage to the LCF and the cause of lameness in Hebrew, dating from 922-722 BC.  8cent.bcHomer   The...
Post a Comment
Read more

2012KomistekRD

    Invention (Patent Application Publication): Komistek RD. Maintaining proper mechanics THA.  US20120221115A1  (2012).   US20120221115A1 US Inventor: Richard D. Komistek Current Assignee: DePuy Ireland ULC Worldwide applications 2011 US 2012 AU CN EP WO EP EP CN EP JP 2013 ZA 2015 US 2016 AU JP US 2018 US AU Application US13/034,226 events: 2011-02-24 Priority to US13/034,226 2011-02-24 Application filed by Individual 2012-08-30 Publication of US20120221115A1 2015-05-05 Publication of US9023112B2 2015-05-05 Application granted Status: Active 2031-02-24 Anticipated expiration   Maintaining proper mechanics THA Richard D. Komistek   Abstract A prosthetic hip joint comprising: (a) a femoral component including a femoral head; and, (b) an acetabular component including an acetabular cup and an acetabular cup insert, the acetabular cup insert sized to receive the femoral head, where the femoral head is sized to have a spherical center that matches a sph...
Post a Comment
Read more

Congenital Hip Dislocation. Pathogenesis

  An original view on the pathogenesis of congenital hip dysplasia, congenital dislocation and subluxation of the hip. One example of the importance of ligamentum capitis femoris (LCF) and the influence of a mechanical factor on living systems is a group of diseases of the hip joint such as congenital hip dysplasia, congenital subluxation and congenital hip dislocation. The last of these pathological conditions is an extreme degree of severity of the previous two. Common to these pathological conditions is the presence of connective tissue dysplasia syndrome of varying severity. It is based on a decrease in the strength and elasticity of connective tissue structures. The consequence of this is that a standard load, for example, on ligaments causes their plastic deformation: thinning, elongation, and in some cases, rupture. This occurs due to both mechanical and biological processes (for more details, see the  Law of Bioinduction ). If, in connective tissue dysplasia syndr...
Post a Comment
Read more