An accurate method of radiological assessment of acetabular volume and orientation in computed tomography spatial reconstruction

Jóźwiak, Marek; Rychlik, Michał; Musielak, Bartosz; Chen, Brian Po-Jung; Idzior, Marek; Grzegorzewski, Andrzej

doi:10.1186/s12891-015-0503-8

Cited by 36 publications

(53 citation statements)

References 45 publications

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“…Jako płaszczyznę odniesienia wybrano płaszczyznę podstawy kości krzyżowej (ang. Sacrum Base Plane, SBP) [11]. Orientację przestrzenną panewki ustalono w oparciu o jej rzeczywistą oś, a objętość i powierzchnię z pomocą płaszczyzny wejścia, zamykającej pa newkę od zewnątrz (Ryc.…”

Section: Methodsunclassified

“…Często jednak ocena parametrów przestrzennych panewki dokonywana jest w oparciu o modele anatomiczne lub metody obrazowania dwuwymiarowe, jak zdjęcie roentgenowskie lub tomografia komputerowa (TK) [9][10][11][12][13][14][15][16][17][18]. Takie podejście powoduje niedokładności, wynikające z ograniczeń tych metod obrazowania [19].…”

Section: Wstępunclassified

“…Tylko obliczenia w oparciu o rzeczywiste modele trójwymiarowe pozwolą znacznie ograniczać błąd pomiaru. Normy dotyczące orientacji prze strzennej panewek nie są jednak wystarczająco określone i często opierają się o płaszczyzny, których dokładność wyznaczania jest niepewna [4][5][6][7][8]11,[20][21][22][23][24]. Równocześnie różnice w strukturze i ustawieniu panewek stawu biodrowego w zależności od płci, choć już opisywane, wymagają nadal uwierzytelnienia naukowego [5][6][7][8], co istotnie może wpłynąć na zrozumienie problemu klinicznego i pośrednio na jakość wykonywanych zabiegów ortopedycznych.…”

Section: Wstępunclassified

“…Nevertheless, assessment of acetabular spatial para meters is frequently based on anatomic models or two-dimensional imaging techniques such as X-ray or computed tomography (CT) [9][10][11][12][13][14][15][16][17][18]. Such appro aches lead to imprecision due to the limitations of these imaging techniques [19].…”

Section: Introductionmentioning

confidence: 99%

“…The measurement error may only be significantly reduced if calculations are based on actual three-dimensional models. However, the norms for spatial orientation of the acetabulum have not been determined sufficiently precisely and are based on planes the determination of which is of uncertain accuracy [4][5][6][7][8]11,[20][21][22][23][24]. At the same time, sex differences in the anatomy and orientation of the acetabulum, while already described, still require scientific evidence to be regarded as reliable [5][6][7][8], which may have a significant impact on the understanding of this clinical problem and, indirectly, on the quality of orthopaedic surgeries being performed.…”

Section: Introductionmentioning

confidence: 99%

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Sexual Dimorphism of Acetabular Anatomy Based on Three-dimensional Computed Tomography Images of Pelvises

Musielak

Rychlik

Jóźwiak

2016

Ortop Traumatol Rehabil

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STRESZCZENIEWstęp. Prezentowane badanie ma na celu porównanie różnic płciowych w budowie i w przestrzennym ustawieniu panewek miednicy, w celu lepszego zrozumienia anatomii stawu biodrowego.Materiał i metody. Badanie wykonano w oparciu o trójwymiarowe rekonstrukcje tomografii komputerowych 50 panewek żeńskich oraz 50 panewek męskich. Na ich podstawie wykonano analizę przestrzenną panewek stawu biodrowego w stosunku do podstawy kości krzyżowej, jako płaszczyzny referencyjnej. W oparciu o analizę statystyczną, porównywano wartości kątowe parametrów opisujących rzeczywistą oś panewki (kąt inklinacji, kąt antewersji, kąt pochylenia) oraz objętość i powierzchnię wewnętrzną panewki stawu biodrowego.Wyniki. Zarówno kąt inklinacji, jak i kąt pochylenia panewki nie różniły się istotnie pomiędzy porównywanymi grupami i wyniosły odpowiednio: 68,61° i 26,53° w panewkach kobiecych oraz 70,56° i 30,19° w męskich (p>0,05). Kąt antewersji był istotnie większy w przypadku panewek żeńskich i wyniosł 38,27°, gdy w męskich -32,05° (p=0,0008), natomiast ich objętość i powierzchnia były istotnie mniejsze u kobiet (odpowiednio p=0,0007 i 0,0001).Wnioski. 1. Ustawienie panewki stawu biodrowego różni się w zależności od płci -panewki żeńskie zorientowane są bardziej ku przodowi niż męskie. 2. Objętość oraz powierzchnia wewnętrzna panewki także się różnią -są mniejsze u kobiet. 3. Niezależnie od wykorzystanej płaszczyzny odniesienia, dymorfizm płciowy panewki stawu biodrowego jest stały. 4. Znajomość powyższych różnic płciowych jest niezbędna dla planowania przedoperacyjnego w zabiegach ortopedycznych (jak w przypadku alloplastyki stawu biodrowego czy leczenia operacyjnego FAI).Słowa kluczowe panewka stawu biodrowego, orientacja przestrzenna panewki, rekonstrukcje trójwymiarowe, inżynieria odwrotna, różnice płciowe SUMMARY Background. The study aimed to compare sex differences in the morphology and spatial orientation of pelvic acetabula to advance the understanding of hip anatomy.Material and methods. The study was based on three-dimensional reconstructions of computed tomography images of 50 female and 50 male acetabula. The images were used for spatial analysis of hip acetabula relative to the base of the sacral bone as the plane of reference. Statistical analysis was performed to compare angles relevant to the actual axis of the acetabulum (inclination angle, anteversion angle, tilt angle) as well as the volume and inner surface area of the acetabulum.Results. Both the inclination and tilt angles of the acetabulum did not differ significantly between the groups, the respective values being: 68. 61° and 26.53° in females and 70.56° and 30.19° in males (p>0.05). The anteversion angle was significantly larger for female acetabula (38.27° compared to 32.05° in men, with p=0.0008), while the volume and the inner surface area were significantly smaller in women (p=0.0007 and 0.0001 respectively).Conclusions. 1. Acetabular orientation is sex-specific, with female acetabula being more forward-oriented than those of men. 2. The volume and inn...

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Section: Methodsunclassified

Section: Wstępunclassified

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sexual Dimorphism of Acetabular Anatomy Based on Three-dimensional Computed Tomography Images of Pelvises

Musielak

Rychlik

Jóźwiak

2016

Ortop Traumatol Rehabil

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Vastus lateralis versus rectus femoris muscle flaps for recalcitrant hip joint infection: An anatomical study comparing the effectiveness of acetabular dead space control

et al. 2022

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Eliminating recalcitrant prosthetic hip joint infections remains one of the greatest challenges in orthopedic surgery. In such cases, the salvage procedure of femoral head excision (the Girdlestone procedure) is often performed. There has been emerging surgical interest in filling the resulting acetabular dead space with a pedicled muscle flap, to enable antibiotic delivery. Both vastus lateralis (VL) and rectus femoris (RF) muscle flaps have been described for this purpose with good success. This study is the first anatomical investigation comparing VL and RF as candidates for interposition myoplasty following hip joint excision. Following standard surgical technique, the Girdlestone procedure and interposition myoplasty of both RF and VL were performed on 10 cadavers. The primary aim was to determine which muscle flap eliminated a greater volume of acetabular dead space. Secondary aims were to characterize the blood supply to RF and assess additional metrics indicative of the likelihood of flap success. The VL flap eliminated more dead space than RF. However, the use of the RF flap was feasible in all cases and has several benefits, including ease of harvest, mobility, and aesthetics. The location of the inferior vascular pedicle into RF was relatively consistent and the most effective predictor of flap success. Both VL and RF are effective in reducing acetabular dead space. While VL can fill a greater volume, the RF flap has technical advantages, related to the predictability of the blood supply.

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Standardization of hemipelvis alignment for in vitro biomechanical testing

Morosato

Traina

Cristofolini

2017

Journal Orthopaedic Research

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Although in vitro biomechanical tests are regularly performed, the definition of a suitable reference frame for hemipelvic specimens is still a challenge. The aims of the present study were to: (i) define a reference frame for the human hemipelvis suitable for in vitro applications, based on robust anatomical landmarks; (ii) identify the alignment of a hemipelvis based on the alignment of a whole pelvis (including right/left and male/female differences); (iii) identify the relative alignment of the proposed in vitro reference frame with respect to a reference frame commonly used in gait analysis; (iv) create an in vitro alignment procedure easy, robust and inexpensive; (v) quantify the intra-operator repeatability and inter-operator reproducibility of the procedure. A procedure to univocally identify the anatomical landmarks was created, exploiting the in vitro accessibility of the specimen's surface. Through the analysis on 53 CT scans (106 hemipelvises), the alignment of the hemipelvis based on the alignment of a whole pelvis was analyzed: differences between male/female and right/left hemipelvises were not statistically significant To overcome the uncertainty in the identification of the acetabular rim, a standard acetabular plane was defined. An alignment procedure was developed to implement such anatomical reference frame. The intra-operator repeatability and the inter-operator reproducibility were quantified with four operators, on male and female hemipelvises. The intra-operator repeatability was better than 1.5°. The inter-operator reproducibility was better than 2.0°. Alignment in the transverse plane was the most repeatable. The presented procedure to align hemipelvic specimens is sufficiently robust, standardized, and accessible. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1645-1652, 2018.

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An accurate method of radiological assessment of acetabular volume and orientation in computed tomography spatial reconstruction

Cited by 36 publications

References 45 publications

Sexual Dimorphism of Acetabular Anatomy Based on Three-dimensional Computed Tomography Images of Pelvises

Sexual Dimorphism of Acetabular Anatomy Based on Three-dimensional Computed Tomography Images of Pelvises

Vastus lateralis versus rectus femoris muscle flaps for recalcitrant hip joint infection: An anatomical study comparing the effectiveness of acetabular dead space control

Standardization of hemipelvis alignment for in vitro biomechanical testing

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