髋臼在前柱投影的解剖学研究

目的探讨髋臼前柱的解剖学结构和螺钉放置的安全角度范围.方法取20具骨盆标本,在X线透视下确定髋臼上缘距髂前下棘顶点和髋臼下缘距髂外血管鞘外缘与骨盆缘交点的距离,CT垂直扫描前柱,测量距髋臼上缘0.5～4.0 cm(每0.5 cm测1次)的CT断面上前柱宽、髋臼宽.根据髋臼在前柱表面的投影,将前柱分为髋臼区、相对危险区和危险区,并测量距骨盆缘1 cm处φ2.5 cm螺钉进钉的安全角度.结果髋臼上缘在髂前下棘顶点上(1.1±0.1)cm,髋臼下缘在髂外血管鞘外缘与骨盆缘交点下(1.7±0.2)cm,距髋臼上缘0.5、1.0、1.5、2.0、2.5、3.0、3.5、4.0 cm的CT断面上,前柱平均宽分别为(55.7±4.8)、(54.4±2.0)、(50.5±3.7)、(41.3±3.0)、(39.1±4.6)、(35.2±5.7)、(31.7±5.6)、(30.8±3.4)mm;髋臼宽分别为(28.2±6.2)、(34.7±5.5)、(36.8±5.2)、(34.8±2.7)、(37.0±4.2)、(33.2±5.1)、(29.6±5.7)、(28.0±3.9)mm;距髋臼上缘0.5 cm断面进钉安全角度应＜87°±8°;距髋臼上缘1.0cm断面进钉的安全角度应＜76°±7°;距髋臼上缘1.5 cm断面进钉的安全角度应＜69°±7°;距髋臼上缘2.0 cm断面进钉的安全角度应＜63°±7°.结论髋臼中心部不能放置螺钉,中心部以上可以放置螺钉,进钉角度应＜63°±7°.     

髋臼后柱钢板螺丝钉内固定技术的解剖学研究

目的：确定后柱各个区域放置螺钉的最佳角度和长度,解决后柱中部区域拧入螺钉易穿入关节的难题.方法：取成年男性尸体标本10具,年龄20～74岁,平均54.5岁.自髋关节处去除双侧股骨,切除L5,自正中矢状面锯开骶骨及耻骨联合,得半骨盆标本20个,排除骨性异常.彻底剔除附着于骨盆的软组织,令标本自然风干备用.确定髋臼上下缘界限和髋臼后柱系列断面,制作髋臼后柱系列断面.在各断面上测量后柱宽、髋臼宽和髋臼后柱宽度百分比,测量各进钉点的螺钉角度和长度,测量数据用SPSS10.0进行统计学分析.结果：平髋臼上1/2断面B、平髋臼1/2断面C、平髋臼下1/2断面D各进钉点的螺钉进钉角度和长度：在平髋臼上1/2断面B上,髋臼后柱外侧缘即髋臼后缘B0分别为41°和44.0 mm;髋臼后柱外1/2即B1分别为66°和42.2 mm;髋臼后柱1/2即B2分别为91°和59.5mm;髋臼后柱内1/2即B3分别为107°和64.0 mm;髋臼后柱内侧缘B4的最大进钉角度和螺钉长度分别为123°和65.5 mm,最小进钉角度和螺钉长度分别为109°和59.0mm.在平髋臼1/2断面C上,髋臼后柱外侧缘即髋臼后缘C0分别为39°和39.0 mm;髋臼后柱外1/2即C1分别为57°和36.0mm;髋臼后柱1/2即C2分别为74°和36.0 mm;髋臼后柱内1/2即C3分别为90°和36.0 mm;髋臼后柱内侧缘C4分别为106°和76.0mm.在平髋臼下1/2断面D上,髋臼后柱外侧缘即髋臼后缘D0分别为42°和35.5 mm;髋臼后柱外1/2即D1分别为61°和33.0 mm;髋臼后柱1/2即D2分别为81 °和32.0 mm;髋臼后柱内1/2即D3分别为100°和31.0 mm;髋臼后柱内侧缘D4分别为120°和74.0 mm.结论：髋臼后柱钢板螺丝钉技术中,在髋臼区的外1/4区、外中1/4区、内中1/4区和在内1/4区,钉后柱角分别为40°～60°、60°～75°、75°～90°、90°～平行于四方区,螺钉长度30 mm.     

髋臼前柱钢板内固定的解剖学研究

目的研究髋臼前柱钢板内固定技术中螺钉的最佳进钉点、方向和长度,预防发生螺钉穿入关节内的严重并发症。方法取成年男性半骨盆标本20个,分别测量髋臼前、后缘到髂前下棘、髂耻隆起和耻骨结节的距离,确定和制作髋臼前柱系列断面,分别测量各断面上各进钉点的安全进钉角度,将测量数据输入到SPSS10.0软件进行统计学分析。结果髋臼前缘到髂前下棘、髂耻隆起和耻骨结节的距离分别为(25.4±1.4)mm,(11.8±0.7)mm和(37.4±1.5)mm,后缘到髂前下棘和髂耻隆起的距离分别为(15.5±0.9)mm和(29.1±1.6)mm。在各断面距离骨盆界线0.5cm点、1.0cm点和1.5cm点上螺钉的安全进钉角度的最大值分别为(8.2±2.2)°、(14.9±3.4)°和(26.1±4.5)°。结论在前柱髋臼区使用钢板内固定时,可以采用3种方法避免螺钉穿入关节内。第一种方法是使用短螺钉,螺钉方向随意;第二种方法是使用长螺钉紧贴骨盆界线进钉,方向平行于四方区;第三种方法为根据不同的进钉点选择不同的进钉角度和长度。     

髋臼后柱解剖学测量及其临床意义

目的探讨髋臼后柱的解剖学结构及其相关临床意义. 方法取52具髋骨标本,确定髋臼缘最上点为点A,髋臼缘最下点为点B,坐骨大切迹顶点与坐骨棘基底中点连线的中点为点C,取CD垂直于AB,D点为CD与髋臼后缘的交点,把DC近似三等分,等分点为E、F,分别以D1、D2、 D3代表DE、DF、DC的长度,R1、R2、R3分别为在点E、F、C三点所测的髋臼后壁的厚度,测量D1、D2、D3、R1、R2、R3的值,并计算D1与R1、D2与R2、D3与R3的比值.将数据进行统计学分析. 结果 52具髋臼的D1与R1、D2与R2、D3与R3的比值分别为1.25±0.20、1.24±0.24、1.24±0.18,三者统计学上无显著性差异(P=0.927),故可认为D与R是成比例的,平均比值为1.24. 结论我们发现髋臼后缘中部与坐骨大切迹中部连线上各点到髋臼后缘的距离与该点髋臼后壁的厚度成一定的比例,比值近似为1.24.     

经坐骨结节至髋臼后柱置钉安全区域的CT测量研究

目的探讨利用CT测量经坐骨结节至髋臼后柱置钉的安全范围。方法收集60例正常成人骨盆的螺旋CT扫描数据,在扫描结果中包含股骨头最大界面的扫描平面,进行二维及三维重建,然后进行有效切割,获得内平面、外平面及后平面,分别测量经坐骨结节至三个平面的最大角度（α、β、γ）,测量获得髋臼后柱三角形内切圆面积及直径。结果坐骨结节至内平面的最大角度α约8．1°,坐骨结节至外平面的最大角度β约23．5°,坐骨结节至后平面的最大角度1约32．2°,髋臼1／2高度处后柱骨质最狭小（内切圆直径最小）,是判断置钉安全性的关键位置。结论经坐骨结节至髋臼后柱置钉的安全范围较小,有必要在置钉时精确量化与精确操作,严格按照个体化进行置钉。     

顺行拉力螺钉固定髋臼后柱骨折进钉的解剖学参数研究

目的 探讨顺行拉力螺钉固定髋臼后柱骨折的进钉参数,为进钉瞄准器的研制提供应用解剖学基础.方法 收集40例正常成人(男20例,女20例)骨盆的螺旋CT扫描数据,重建骨盆三维模型.经髂前上棘(A)和髂后上棘(B)的骨性最突出点的连线中点M做一平面(γ)垂直于AB,在髋臼后柱的γ截面上模拟置人虚拟圆柱体,该圆柱体从髂翼内侧的穿出点(O)即为拉力螺钉的入钉点.在弓状缘上取点D,使OD成为入钉点与弓状缘之间的最短距离,连结OD,G点为骶髂关节最前缘,连结DG.测量OD、DG的距离、置入拉力螺钉的长度、拉力螺钉与冠状面的夹角(α)及与矢状面的夹角(β). 结果 OD距离平均为(13.62±2.19)mm,DG距离平均为(15.27±4.01) mm,能置入拉力螺钉的长度平均为(116.65±7.19) mm,α夹角平均为15.47°±4.01°,β夹角平均为6.65°±2.93°.男、女性在DG距离、β夹角、置入拉力螺钉的长度方面差异均有统计学意义(P＜0.05),而在OD距离及α夹角方面差异均无统计学意义(P＞0.05). 结论 根据髋臼后柱顺行拉力螺钉置钉的解剖学参数,术中置入合适长度的拉力螺钉是可行的,可作为研发进钉瞄准器的应用解剖学依据.     

经皮逆行髋臼前柱螺钉内固定的计算机辅助应用解剖学研究

[目的]测量经皮逆行髋臼前柱螺钉内固定的应用解剖参数。[方法]收集本院2015年6月~2016年1月完整骨盆CT扫描数据男女各15例(男女各30侧半骨盆),应用Mimics计算机辅助外科软件,重建骨盆三维模型。模拟手术逆行置入髋臼前柱虚拟螺钉,调整好螺钉位置后测量螺钉长度、进钉点、进钉方向;通过软件的重切割功能,制作35层髋臼前柱系列截面,测量截面中螺钉所通过位置(即钉道)的直径。[结果]髋臼前柱可置入螺钉的最大工作长度男女分别为(119.79±8.71)mm、(104.10±5.84)mm;进钉点(P)到耻骨上支上缘(A)、耻骨联合(B)的垂直距离男性分别为(19.69±2.79)mm、(18.80±3.35)mm,女性分别为(18.27±2.13)mm、(22.92±3.34)mm;螺钉与冠状面、矢状面、横切面的夹角男性依次为(16.18±5.37)°、(41.76±4.78)°、(43.30±5.55)°,女性依次为(17.16±5.53)°、(43.12±3.90)°、(41.36±4.59)°;螺钉长度和PB男女之间的差异具有统计学意义(P<0.05),进钉方向和PA男女之间的差异无统计学意义(P>0.05)。前柱钉道最狭窄处位于第5层,该层截面中钉道直径男女分别为(11.43±1.24)mm、(8.75±0.95)mm,男女之间差异具有统计学意义(P<0.05)。[结论]作者建议国人男性使用直径为6.5 mm的螺钉,女性使用直径为5.5 mm的螺钉;进钉点男女稍有不同,在螺钉经过耻骨上支的中部和髂窝平面处两个狭窄地方时,应加强监视。     

髋臼前柱螺钉固定解剖学研究及导向器的设计

目的为经髋臼前柱螺钉固定提供解剖学依据。方法对22只成人尸体骨盆标本,共44侧髋臼进行解剖学研究,观测髋臼前柱横断面形状,测量髋臼前柱螺钉固定在髂骨翼外侧面的进针点、进针方向、钉道直径、进针点至闭孔沟的距离。结果髋臼前柱横断面呈近似直角三角形,钉道直径10.5±0.8mm;螺钉进针点位于髂骨翼后外侧面坐骨大切迹和髂前上棘连线上方9.2±2.4mm,距坐骨大切迹38.5±3.8mm;螺钉进针方向于水平面与中心线夹角为40.7±3.8°,矢状面向尾端成角54.2±5.5°。钉道长度84.1±6.2mm。并设计出髋臼前柱螺钉固定导向器。结论髋臼前柱可接受1枚直径6.5mm、长70mm的螺钉,螺钉进针点位于髂骨翼后外侧面坐骨大切迹和髂前上棘连线上方10mm,距坐骨大切迹40mm。螺钉进针方向于水平面与中心线夹角40°,矢状面向尾端成角55°。髋臼前柱螺钉固定导向器将提高前柱螺钉固定的安全性。     

改良Stoppa入路拉力螺钉经前柱固定髋臼后柱、后壁的解剖通路研究

目的研究改良Stoppa入路拉力螺钉经前柱固定髋臼后柱、后壁的解剖通路。方法收集30例正常成人半骨盆CT数据并重建骨盆髋臼模型,在改良Stoppa入路可见范围内模拟螺钉由髋臼前柱向后柱、后壁置入。测量参数:入钉点与髋臼顶点距离(H1),入钉点与真骨盆内缘的距离(H2),由入钉点向髋臼后壁下部置入螺钉的长度(L1),由入钉点垂直真骨盆面向髋臼后壁中部置入螺钉的长度(L2),由入钉点向髋臼后壁上部置入螺钉的长度(L3),由入钉点向髋臼后柱坐骨小切迹部置入螺钉的长度(L4);髋臼下部螺钉与髋臼后壁中部置钉夹角(A1),髋臼上部螺钉与髋臼后壁中部置钉夹角(A2),髋臼后柱坐骨小切迹螺钉与髋臼后壁中部螺钉夹角(A3),髋臼后柱坐骨小切迹螺钉与进钉点和骶髂关节前缘与真骨盆内缘交点连线的夹角为(A4),髋臼后柱坐骨小切迹螺钉与髂骨翼平面夹角为(A5)。结果男性组模拟置钉后L1、L2、L3、L4明显大于女性组,差异有统计学意义(P 0.05);但2组H1、H2、A1、A2、A3、A4、A5比较差异无统计学意义(P0.05)。4例3D打印模型(2例男性髋臼及2例女性髋臼)经自制导向器置钉后验证成功。结论在改良Stoppa入路可显露的骨盆范围内,由髋臼前柱固定髋臼后柱、后壁的螺钉安全通路存在,并且经3D打印模型置钉验证成功。     

髋臼后柱骨折经皮逆行拉力螺钉固定的三维重建模型研究

目的 为髋臼后柱骨折经皮逆行拉力螺钉固定提供应用解剖学基础. 方法 收集60个正常成人骨盆的螺旋CT扫描数据,重建骨盆三维模型.模拟逆行拉力螺钉固定,在髋臼后柱置入虚拟三维圆柱体.计算其最大直径、长度、置入角度以及置入点(A)到坐骨结节远端(B)的距离.同时在相同的三维重建骨盆模型上,垂直髋臼内侧面对后柱进行重切,每间隔1 cm取一个截骨面,测量每个截骨面的内外径和上下径. 结果 男性半骨盆58个,女性半骨盆62个.虚拟三维圆柱体的平均最大直径为(13.16±1.45)mm,虚拟三维圆柱体与水平面、冠状面和矢状面的夹角分别为72.02°±6.05°、14.71°±6.98°和8.61°±3.96°,置入点位于坐骨结节内外侧缘的中线上,AB间距离为(15.18±1.97)mm.平均最小内外径和上下径分别为20.11 mm、19.19 mm,明显大于虚拟三维圆柱体的平均最大直径.虚拟三维圆柱体的直径、长度、与矢状面的夹角在男女之间的差异有统计学意义(P＜0.001). 结论 髋臼后柱可容纳7.3 mm的拉力螺钉,但男女的进针角度不同.螺钉的直径不能仅仅靠截骨面的直径确定.     

Danger zone of the acetabulum.

The danger zone of the acetabulum is defined by Marvin Tile as that part of the posterior wall and column at the mid-acetabulum lying above the ischial spine. Screws inserted in the danger zone are at risk of violating the hip joint. Unfortunately, this zone is frequently used in the fixation of posterior wall and column fractures. Cadaveric studies were performed analyzing 1-cm cross-sections through the acetabulum for the purpose of studying the anatomical configuration of the danger zone. The plane of the cross-section was perpendicular to the posterior column. Each cross-section had the medial boundary of the acetabulum projected onto the posterior column. The cross-sections were then assembled to form the original acetabulum. By analyzing the projections on the posterior column, the exact configuration of the danger zone was determined. Screws placed at the margin of the danger zone and directed perpendicular to the posterior column violated the hip joint. Through analysis of the cross-sections, safe anatomic pathways were developed for screw placement. Cortical screws (4.5 mm), placed at entry points of 2 cm and 3 cm medial to the lateral acetabular margin and angled medially 45 degrees and 15 degrees, respectively, did not violate the hip joint. The angulation was respective to the perpendicular to the posterior column. In this study, the average width of the posterior column at the mid-acetabular level was 4.8 cm. Computed tomography scan of the acetabulum yielded valuable information regarding screw placement in the posterior column.(ABSTRACT TRUNCATED AT 250 WORDS)     

髋臼后柱拉力螺钉内固定的临床解剖学研究

目的研究髋臼后柱拉力螺钉内固定螺钉的最佳进钉点、方向和长度。方法取12个骨盆标本,其中男7个,女5个。於双侧髋臼中部垂直于前后柱表面截骨,逆行法沿后柱中心打入一克氏针,其从髂窝的穿出点为P点,作参考线AB,其中A为骶髂关节最前缘,B为髂前下棘基底下缘,由P点向AB作垂线,与AB相交于D点,然后测量以下数值:1.测量AB、AD、PD的距离;2.测量仰卧位时后柱克氏针与水平面的夹角α,与矢状面的夹角β;3.测量髋臼后柱截面的半径;4.测量后柱克氏针在骨皮质内的长度。结果PD是AB的中垂线。PD的距离男性为1.62±0.23cm,女性为1.51±0.10cm;夹角α男性为24.3±2.0°,女性为24.0±1.3°;夹角β男性为25.9±3.1°,女性为14.7±2.0°;后柱截面半径男性为10.18±1.24mm,女性为8.57±0.82mm;后柱克氏针长度男性为11.6±0.8cm,女性为10.2±0.5cm。结论髋臼后柱拉力螺钉内固定是可行的。     

人体髋臼前后柱骨硬度分布特征研究

目的研究人体髋臼前柱和后柱的硬度分布特征,探索骨硬度分布的科研价值及临床应用前景。 方法本研究所用两男一女3具标本均由河北医科大学解剖教研室提供,选取3对髋臼前后柱样本,取出全部髋骨后剔除软组织,运用微型台锯将髋骨分割为髋臼前柱和后柱,后用高精慢速锯将髋臼前后柱切割成若干厚3 mm的骨组织切片,固定在载玻片后用砂纸打磨。使用维氏硬度仪测试骨组织切片不同解剖区域皮质骨和松质骨的硬度值。本研究采用50 g力加载50 s、维持12 s标准操作方法测定,组间数据比较采用配对t检验。 结果本研究在人体髋臼前柱和髋臼后柱随机切取骨片,代表了髋臼前后柱纵向的不同位置,测量共计450个有效值,3个样本髋臼前柱总体硬度范围在18.9～33.8 HV,均值(25.2±3.1)HV;髋臼后柱硬度范围在23.1～39.1 HV,均值(31.9±3.8) HV。男性捐献者髋臼前、后柱总体硬度范围分别为18.8～33.8 HV及23.1～39.1 HV;女性捐献者髋臼前、后柱总体硬度范围分别为19.4～33.8 HV及24.6～38.9 HV,所有标本中后柱平均骨硬度值均大于前柱,且差异有统计学意义(t＝7.502、4.724、5.487,P<0.01),研究数据表明男性和女性髋臼前柱与后柱均存在硬度分布差异。 结论人体髋臼前后柱骨硬度值个体间存在差异,但均为后柱骨硬度大于前柱。骨硬度值的研究可为髋臼骨折内植物的置入位置、置钉长度及方向等提供参考,同时为研发符合人体梯度弹性模量的内植物及骨盆髋臼假体提供可靠的数据支撑。     

The use of a 3D-printed personalised drill guide for posterior column lag screw fixation in displaced transverse acetabular fracture: A case report

Introduction and importanceAnterior column plate combined with posterior column screws have been effectively used for treatment of displaced transverse acetabular fractures. This article presents the use of 3D-printed technology for customising a guide template to appropriately place posterior column screw.Case presentationA 50-year-old female suffered displaced juxtatectal fracture of the right acetabulum. A personalised guide for antegrade posterior column screw placement was designed based on the data of her pelvic CT-scan. This guide and a prototype of her right acetabulum - created by mirroring the intact left acetabulum - were 3D-printed for preoperative evaluation and pre-contouring of reconstruction plate. Modified Stoppa approach and additional lateral window were used for direct reduction, anterior column plate and posterior column lag screw fixation. Post-operative CT-scan showed good reduction and nearly ideal screw position.Clinical discussionAnterior column plate and antegrade posterior column screw could provide joint stability and early mobilisation for displaced transverse acetabular fractures. However, determination of optimal entry point, direction and length for screw insertion is still technically demanding. The 3-D reconstruction images of hemipelvic specimen allowed us to identify the safe bone corridor, design a drill guide to put the proper guide pin and conduct preoperative trial. All those resulted in appropriate real screw fixation with reduction of soft tissue damage, X-ray exposure and time of operation.ConclusionThe use of 3D-printed personalised guide for posterior column screw fixation is a promising alternative option for treatment of displaced transverse acetabular fracture where 3D-navigation system is not available.     

Spätergebnisse von 204 konservativ behandelten Hüftpfannenbrüchen

This paper describes a long-term follow-up study of 204 conservatively treated patients with acetabular fractures. The interval between accident and follow-up examination ranged from 1.5 to 16 years, with a mean interval of 4.2 years. The frequency of post-traumatic complications caused by avascular necrosis of the femoral head, coxarthrosis and periarticular calcification is reported. Undisplaced acetabular fractures, posterior fracture dislocations with a minor acetabular rim fragment, and displaced fractures of the acetabular floor running through the anterior part of the acetabulum yielded predominantly good results when treated conservatively. By far the poorest results were achieved in posterior fracture dislocations having a major rim fragment, and in displaced fractures of the acetabular floor which ran through biomechanically important parts of the acetabulum (cranial and posterior column).     

Diagnosing childhood acetabular dysplasia using the lateral margin of the sourcil

The purpose of this study was to evaluate the lateral edge of the acetabulum and locate the most accurate marking point on a plain radiograph when measuring the acetabular index (AI) and the center-edge (CE) angle. We studied the radiographs of 53 patients with unilateral developmental dysplasia of the hip (DDH), all of whom were treated by closed reduction. In addition to plain radiographs, eight patients had magnetic resonance imaging (MRI) studies, 16 had three-dimensional computed tomography (3-DCT) studies, and six underwent arthrographic studies. We found that the most lateral bony margin of the acetabular roof on plain radiograph represents the anterolateral portion of the acetabulum. The lateral end of the sourcil indicates the lateral margin of the mid-superior portion of the acetabulum. To reduce intra- and interobserver errors, we suggest that when measuring the AI and the CE angle, physicians clearly indicate in the medical records which of the two marking points was used.     

髋臼后柱的CT测量及其X线投照角度的探讨

目的 探讨C型臂X线机透视下经皮置入髋臼后柱螺钉的最佳透视角度. 方法 对10具尸体标本的20侧髋臼进行CT扫描,在扫描结果中包含股骨头最大界面的扫描平面内,测量后柱后表面与冠状面的交角(α角)及后柱后表面与髋臼口所在平面的交角(β角). 结果 髋臼后柱后表面与冠状面的交角(α角)为28.2°±2.3°,髋臼后柱后表面与髋臼口所在平面交角(β角)为95.4°±5.3°.结论 当C型臂X线机以平行于后柱后表面的方向进行投照时,球管与冠状面成约30°角,即在闭孔斜位的基础上增加15°,与闭孔斜位投照相比,能更准确地了解螺钉与后柱后表面之间的关系.     

Morphologic features of the acetabulum

Introduction: The embryology and development of the hip joint are complex. The acetabulum is not always of the same shape, width, or depth. Minor anatomical abnormalities in the acetabular shape, joint congruences are frequent. Controversies still exist on the importance of these variations and help to prevent problems following in surgical procedures such as acetabular reconstruction and femoracetabular impingement. Material and methods: The aim of this study is to provide the location of the unusual facets, the acetabular point, and the anterior ridge of the acetabulum based on a morphological study of human pelvic bones. Morphologic features of the acetabulum, particularly determination of unusual facets, were studied in 226 human coxal bones. Results: In adult coxal bones the acetabular fossa has an irregular clover-leaf shape, the superior lobe being smaller than the anterior and the posterior lobes. Measured lunate surface area varied between 14.5 and 30.5 cm². A smooth unusual facet was found antero-inferior to the lunate surface in 62 acetabulums. Measured along the long axis, its size varied between 11 and 17 mm. Three different shapes of the unusual facet were as follows: oval (32.26%), piriform (45.16%), and elongated (22.58%). The prevalence of the piriform facet shape was higher in males. In 59.68% of the bones it extended to the superior ramus of the pubis, and in the remaining 40.32% it was limited within the acetabular margin. It is postulated that this facet could be a consequence of a particular posture, which results in traction of the ligaments attached to this area. Four distinct configurations were identified relative to the anterior acetabular ridge. The majority 98 (43.36%) were curved; 64 (28.33%) were angular; 37 (16.37%) were irregular; and 27 (11.94%) were straight. Conclusion: There have been no reports on details such as unusual facets, acetabular point, and anterior ridge of the acetabulum in a single research. These findings will be of help in planning reorientation procedures, using spikes, screws, and press-fitting for fixation.