Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Acetabulum”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 271 records · Page 15Linked to original sources
PubMed2004

Sublabral sulcus at the posteroinferior acetabulum: a potential pitfall in MR arthrography diagnosis of acetabular labral tears.

OBJECTIVE: Our study correlated findings on hip MRI and MR arthrography with hip arthroscopy to assess the location, prevalence, and potential pitfall of a normal acetabular sublabral sulcus. MATERIALS AND METHODS: We retrospectively collected 58 hip MRI studies along with surgical reports in 58 patients who underwent hip arthroscopy over a 5-year period. Intraoperative photography (n = 23), radiography (n = 56), unenhanced MRI (n = 13), and MR arthrography (n = 54) studies were available for review. Two radiologists described hip anatomy on radiology studies with agreement by consensus. RESULTS: A normal posteroinferior sublabral groove was confirmed on available arthroscopy photographs in four (17.4%) of 23 hips. In each of these four patients, the anatomic sublabral groove correlated with apparent partial labral detachment on MR arthrography. On review of all studies, 13 hips (22.4%) without a posterior labral tear at surgery had imaging findings of a sublabral sulcus. The sulcus was not associated with acetabular dysplasia, which was radiographically noted in 12 cases (21.4%). Preoperatively, the sulcus was misdiagnosed as a tear in two cases. Labral tears were anterior or anterosuperior in 51 patients. CONCLUSION: A posteroinferior sublabral groove is a relatively common normal anatomic hip variation. If not recognized as normal, the sulcus may serve as a diagnostic pitfall on MR arthrography. Its location is distinct from most labral tears. We did not discover a sublabral sulcus at the anterior or anterosuperior acetabulum, the most common sites of labral injury.

Acetabulum↗
PubMed1984

Experimentally produced growth disturbance of the acetabulum in young rabbits.

The primary aim of this study was to clarify the influence of operations of the acetabular roof on the development of the hip joint in growing rabbits. The second objective was to discover if age had any role in the development of eventual acetabular growth disturbance. The animals were 3 and 8 weeks old at the time of the operation. A wedge-resection was performed on the acetabular roof through an extra-articular approach. In the control series only the soft tissues were operated, and the bony-cartilaginous roof was left intact. The growth of the hips was followed radiographically. In the rabbits operated at the age of 3 weeks acetabular dysplasia developed within a few weeks, associated with subluxation or luxation of the femoral head combined with other secondary changes of the joint. In the rabbits operated at the age of 8 weeks the dysplastic changes of the acetabulum were lesser or no abnormalities could be seen. In the control group the growth of the hip was normal.

Acetabulum↗
PubMed1984

Trabecular microfractures in the acetabulum. Histologic studies in cadavers.

The distribution of trabecular microfractures was studied in 39 cadaveric acetabula. The mean age of the group with microfractures was 71 years and the mean age of the group without fractures was 60 years. Most of the microfractures were located at the subchondral, weight-bearing portion of the acetabulum. Our observations suggest that trabecular microfractures are involved in the formation of bone cysts.

Acetabulum↗
PubMed1993

Glass ceramic augmentation of the acetabulum. Total hip arthroplasties in 24 dogs.

Implants made of glass-ceramic containing apatite and wollastonite were used for reconstruction of large bone defects of the weight-bearing acetabulum in canine total hip arthroplasties. 24 dogs underwent replacements and were killed after 3, 6, and 12 months. The interface between the prosthesis and bone was examined radiographically, histologically, and mechanically. Bone bonding with the prosthesis occurred in all the implants. Glass ceramic containing apatite and wollastonite implants seem promising for use in total hip arthroplasty as filling materials for large defects in weight-bearing bone.

Acetabulum↗
PubMed1996

Reconstruction in metastatic destruction of the acetabulum. Support rings and arthroplasty in 12 patients.

In 12 patients with acetabular metastases, we reconstructed the hip with a support ring, cement, and Charnley prosthesis with a 22 mm head. There were no immediate postoperative deaths or cardiovascular complications. Dislocations occurred in 5 patients, 1 of whom required open reduction. At follow-up, 3 patients were alive 11, 15, and 18 months after surgery. 9 patients died after 8 (2-13) months. All patients obtained relief from pain, became ambulatory and were discharged to their homes. 1 patient had rapid disease progression with pathologic fracture and cranial dislocation of the support ring. Among the remaining 11 patients, the hip has not again caused pain or limited function. There were no signs of loosening, except in the patient with fracture of the hemipelvis. Remineralization was observed in 2 breast cancer patients after chemotherapy. Hip reconstruction can restore painless function until death in cancer patients with severe destruction of the acetabulum.

Acetabulum↗
PubMed1992

Pathologic fractures of the acetabulum and the pelvis.

Metastatic involvement of the pelvis, and in particular the acetabulum, is a common finding among patients with metastatic osseous disease. With involvement of the joint surfaces, specifically the hip and sacroiliac joints, marked compromise of function can occur. With advances in imaging and the evolution of surgical reconstructive alternatives, most of these patients can be rendered pain-free and functional by transferring weight distribution onto more stable elements of the hemipelvis. Reconstruction must be feasible and in the best interests of the patient. The decision to proceed represents a collective opinion of the patient, oncologist, and surgeon.

Acetabulum↗
PubMed2003

Geometric measurements of the acetabulum in adult Malawians: radiographic study.

OBJECTIVES: To determine the acetabular depth as well as acetabular and centre edge angles; to assess the influence of sex, if any, in these geometric measurements; and to determine the prevalence of hip dysplasia in adult Malawians. DESIGN: A retrospective study. SETTING: Queen Elizabeth Central Hospital (QECH) and Blantyre Adventist Hospital (BAH). MAIN OUTCOME MEASURES: The acetabular and centre edge angles, acetabular depth and the prevalence of hip dysplasia were determined. MATERIALS AND METHODS: Two hundred and fifty three bilateral radiographs of the hip from adults, 133 men and 129 women, were used to measure the acetabular depth, angle and centre edge angle using a calliper and goniometer. The radiographs were taken from patients with no underlying bone disease between January 1997 and February 2001 at QECH and BAH. RESULTS: The prevalence of hip dysplasia was 11.54% for men and 13.16% for women with respect to centre edge angles but this difference by sex was not significant (P>0.1). However, the prevalence of hip dysplasia with respect to centre edge angle showed significantly more dysplasia in Malawian men than Nigerian and Chinese men (P<0.001 and P<0.05, respectively). Centre edge angles also showed a wider range in Malawian men (19-51 degrees right, and 15-52 degrees left) than women (18-45 degrees right, 20-46 degrees left). In both hips, the acetabular angles were more obtuse in men (35.52 degrees right, 34.21 degrees left) than women (29.43 degrees right, 29.29 degrees left), and this difference was significant (P<0.001). The ranges of acetabular angles were wider in women (11-38 degrees right, 8-40 degrees left) than men (24-49 degrees right, 20-40 degrees left). Acetabular depth was also greater in men than in women (P<0.01 right hip, P<0.02 left hip). CONCLUSION: Sex influences geometrical measurements of the acetabulum. The prevalence of hip dysplasia with respect to centre edge angle was significantly higher in women than men and the prevalence for men with respect to centre edge angle was significantly different when compared with Nigerian and Chinese men. This information will assist clinicians in the region and Malawi in particular to interpret hip X-rays of African patients.

Acetabulum↗
PubMed1999

Fractures of the posterior wall of the acetabulum.

Only 30% of posterior-wall acetabular fractures involve a single large fragment. The majority are multifragmentary or have areas of impaction. Unsatisfactory clinical results occur in more than 80% of patients treated non-surgically. Operative management usually offers the best chance of preserving long-term joint function, but only if an anatomically reconstructed acetabulum can be achieved without complication. The keys to surgical success include maintaining the viability of the fracture fragments and the femoral head itself, using bone grafts and buttress plating to support elevated and comminuted fragments, and protecting the neurovascular structures at risk. Complications can include sciatic nerve injury (incidence, 3% to 18%), heterotopic ossification (7% to 20%), and osteonecrosis of the femoral head (5% to 8%). Despite the relative simplicity of this acetabular fracture, unsatisfactory outcomes after surgical repair of the posterior wall occur in at least 18% to 32% of cases, results that are worse than for most of the other more complex acetabular fracture patterns.

Acetabulum↗
PubMedDate not supplied

Inveterate fractures of the acetabulum.

The authors reviewed 44 inveterate fractures of the acetabulum treated surgically by internal osteosynthesis. The definition of inveterate fracture concerns lesions that are treated from 21 to 90 days after trauma. Based on an analysis of this series several features of a prognostic and therapeutic nature may be determined. In particular, it may be observed just how difficult it is to standardize therapeutic strategies in relation to polymorphism and anatomopathologic progression of the lesions.

Acetabulum↗
PubMed1976

[Fracture of the acetabulum in old Charnley prostheses (author's transl)].

A report was made of 35 Charnley prostheses implanted between 1962 and 1965. The occurring complications were discussed. In an exceptionally high number of these complications, fracture of the acetabulum proved to be the most important factor. Causes and predisposing factors were presented. Finally, reference was made to the significance of some of the experiences acquired on the basis of the long-term results which were published in this form for the first time.

Acetabulum↗
PubMed1999

Periprosthetic fracture of the acetabulum during total hip arthroplasty in a patient with Paget's disease.

The case of a patient with Paget's disease of the pelvis (acetabulum) who had an intraoperative posterior wall fracture during the insertion of a noncemented acetabular component into an under-reamed acetabular bed of sclerotic Pagetoid bone is reported. This unusual complication has not, to my knowledge, been previously reported. Patients with sclerotic bone, like those with osteoporotic bone, may also be at risk for periprosthetic acetabular fractures when an under-reaming technique is used.

Acetabulum↗
PubMed1999

Acetabulum-head index in children with normal hips: a radiographic study of 154 hips.

The acetabulum-head index (AHI), which is used to assess femoral head coverage on plain radiographs, was measured in 77 children (154 hips) with normal hips aged 2 to 14 years. The mean AHI value was 94 (range, 79-114). Both the intraobserver and the interobserver reproducibility of the measurements was high. The AHI values tended to decrease with increasing age. The mean AHI minus 2 standard deviations, which was used to define the border value for subluxation of the femoral head, was 80. The authors propose that an AHI < or = 80 can be used as a guideline to reveal abnormal lateral displacement of the femoral head in children.

Acetabulum↗
PubMedDate not supplied

Central fractures of the acetabulum: a critical analysis and review of literature.

Central fracture of the acetabulum is an uncommon traumatic lesion of the pelvis that is usually best managed by conservative measures. Adequate roentgenographic evaluation and closed manipulation followed by skeletal traction is essential to attain and maintain congruity of the weight-bearing dome with the femoral head. Reduction should be maintained with traction continued uninterrupted for three months. Open reduction and internal fixation may be warranted if the actabular dome elements are of sufficient size for reconstruction of the pelvic wall. An early exercise program will improve and, as a rule, restore the range of hip joint motion. Protected weight-bearing may safely begin approximately three to four months post-injury.

Acetabulum↗
PubMed1975

[Sequelae of acetabulum fractures treated by total hip prosthesis].

The authors have treated by total prosthesis 39 cases of fractures of the acetabulum, at the stage of severe sequellae. 21 of them had been initially treated conservatively, and 18 had been previously operated on. 23 times they used conventional prosthesis anchored with cement. 8 cases became loose and had to be re-operated on. 16 times an original prosthesis made of highly porous metal was used with no complication at the present time.

Acetabulum↗
PubMedDate not supplied

Indications and limits of hybrid hip prostheses (cementless acetabulum and cemented stem).

The authors report the indications and short-term results obtained in a series of 99 total hip prostheses with a screwed acetabulum and cemented stem. The principles which inspired their choice and the criteria used to select patients are discussed. The results obtained, evaluated both clinically and radiographically, are satisfactory, particularly with regards to percentage of pain symptoms in the femur.

Acetabulum↗
PubMed1992

Reconstruction of the severely deficient acetabulum with the bipolar prosthesis and allo-autograft.

We reviewed the clinical results and radiographs of four patients who had revision of the acetabular component of a failed total hip arthroplasty with a bipolar socket supplemented by autoallograft to reconstruct massive bony defect. These patients were followed up from twelve to seventeen months. The clinical score was assessed by a modified d'Aubigne's rating score that assigned a maximum of 18 points. The preoperative clinical score ranged from 1 to 5 points (mean: 3.25 points). The postoperative score improved to a range of 13-17 points (mean: 15.25 points). Of the hips examined, nearly all were pain-free. The largest possible bipolar cup was used with solid structural allografting augmented by morseled cancellous autograft. These have been uniformly trouble-free with acetabular reconstitution. Cup migration was minimal or none. The follow-up periods were short and some migration is probably to be anticipated in the future. Although this technique was originally conceived as part of a staged procedure, it seemed as a definitive procedure yielding acceptable results for dealing with a severely deficient acetabulum. Larger series and longer periods of follow-up are demanded to support this assertion.

Acetabulum↗
PubMed1992

[Osteochondritis dissecans of the acetabulum. Apropos of a case].

Osteochondritis dissecans acetabuli is a rare affection. The observation presented is one of a 23 year old man, who presented hip blockages in external flexion rotation. X-ray only allowed to find a sequestrum in the acetabulum by tomography-Arthroscanner confirmed the osteochondritis without cartilage rupture. Arthroscopy eliminated a cartilage lesion and directed towards a cavity filled by spongious bone through an extra articular approach.

Acetabulum↗