China
Africa
Explore chapters and articles related to this topic
A to Z Entries
Published in Clare E. Milner, Functional Anatomy for Sport and Exercise, 2019
The hip is a very stable joint, with stability provided by the ball and socket configuration of the femur and pelvic bones and several thick and strong ligaments (Figure 13). There are three ligaments external to the hip joint: the iliofemoral, ischiofemoral, and pubofemoral ligaments. They are named according to the parts of the hip bone that they are attached to, plus their attachment to the femur. There are two more ligaments at the hip inside the ball and socket of the joint: the ligamentum teres (ligament of the head of the femur) and the transverse acetabular ligament. The ligamentum teres directly attaches the head of the femur to the acetabulum of the hip bone. There is a small pit in the smooth head of the femur, the fovea, where the ligament attaches. Similarly, the other end of the ligament attaches to the centre of the acetabular fossa, where it is surrounded by the smooth lunate surface of the acetabulum. This internal hip joint ligament prevents the head of the femur from rotating too far in any direction within the acetabulum. The transverse acetabular ligament helps to make the socket of the hip joint deeper, along with the acetabular labrum, a rim of fibrocartilage around the edge of the acetabulum. The ligament crosses the acetabular notch, part of the rim not extended by the labrum, making a complete ring of soft tissue. As a result of this extension of the acetabulum, more than half of the femoral head fits within the socket of the hip joint.
Lower limb
Published in David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings, McMinn’s Concise Human Anatomy, 2017
David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings
Hip joint - the best example of a ball- and-socket joint. The head of the femur fits snugly into the acetabulum of the hip bone (Figs. 7.1, 7.8, 8.6), which is deepened around the periphery by the cartilaginous acetabular labrum and across the acetabular notch by the fibrous transverse acetabular ligament. The ligament of the head of the femur runs from the non-articular fossa close to the transverse ligament to the fovea of the head, carrying important blood vessels to the femoral head in the young child; however, these usually degenerate before adulthood. The capsule is attached to the hip bone around the margins of the acetabulum; on the femur, it attaches anteriorly to the intertrochanteric line, but posteriorly it attaches halfway along the neck. The capsule reflects back on itself towards the femoral head carrying the ret- inacular blood vessels that supply the femoral head in adults. Thus, much of the neck is intracapsular and covered by synovial membrane.
The Articulations of the Lower Member
Published in Gene L. Colborn, David B. Lause, Musculoskeletal Anatomy, 2009
Gene L. Colborn, David B. Lause
The acetabulum, the socket of the hip joint, consists of… an articular cavity with a hyaline cartilage covered lunate surface, the bony rim of which is thickened by overlying cartilage to form the acetabular labrum. The bony rim has a deep acetabular notch in it, inferiorly. The part of the labrum which passes across the notch, the transverse acetabular ligament, converts the notch into an acetabular foramen.a non-articular, rough-surfaced acetabular fossa, occupied by fat, blood vessels and the ligament of the head of the femur.
Value of Computed Tomography-Based Three-Dimensional Pre-operative Planning in Cup Placement in Total Hip Arthroplasty With Dysplastic Acetabulum
Published in Journal of Investigative Surgery, 2019
Peihui Wu, Qiaoli Liu, Ming Fu, Zhiqi Zhang, Suiwen He, Weiming Liao, Yan Kang
Posterolateral surgical approaches were used in all cases. A diagonal cutting was made in the femoral neck 5–10 mm above the lesser trochanter to remove the femoral head, the acetabular labrum was completely removed, and sufficiently expose the acetabular bony rim including the lowest part. The surgeon reamed at the level of acetabular notch down to medial wall with a small diameter reamer, and slightly upward reaming with caution to get an acceptable acetabular dome coverage by checking the width of uncovered part which had been planned and provided to the surgeon pre-operatively. The ranges of acetabular orientation were set as 30–50°of inclination(inclination target zone), 10–25°of anteversion (anteversion target zone). The press fit technique was applied by using an accurate acetabular trial to measure the size of the reamed acetabulum, and an acetabular component of appropriate oversizing with respect to the reamed acetabulum may be selected.