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PubMed1992

Prevention of vascular injuries in revision total hip replacement.

Iliac-vessel injury from total hip arthroplasty is associated with hemorrhagic complications and an increased death rate. The authors identified seven patients who had severe medial displacement of the acetabular prosthesis and associated vascular injury to the iliac vessels after total hip replacement. One patient had two hip replacements. Preoperative findings included a pelvic mass (three hips), pelvic pain (eight), radiologic evidence of cement in the pelvis (three) and the acetabular prosthesis in the pelvis (eight), computed tomographic evidence of cement in the pelvis and proximity of the prosthesis to the iliac vessels (four), and arteriography showing displacement or compression of the iliac vessels (seven). Operative management in all cases involved medial exposure, mobilization and repair of the iliac vessels before revision of the hip prosthesis. Postoperative complications were deep vein thrombosis (three), in spite of prophylaxis, and occlusion of a vein interposition graft (one) requiring placement of a femoral crossover graft. There were no deaths, amputations or hemorrhagic complications. The authors advocate preoperative identification of patients who have iliac-vessel involvement by their total hip prosthesis and initial medial extraperitoneal exposure and repair of these vessels before removal of the displaced acetabular prosthesis.

Angiography↗
PubMed2005

[Femoral neck fracture complicating orthopedic reposition of a dislocated hip: four cases].

Posterior dislocation of the femoral head with fracture is an exceptional hip injury. Emergency reduction is required. Reposition into the acetabular cavity of the dislocated femoral head may not be feasible. Irreducibility, instability, and more rarely accidental fracture of the femoral neck may also occur. We encountered this latter complication in four patients and report here its frequency and mechanism and propose preventive therapeutic measures. Seventy dislocations and fracture-dislocations of the hip were treated in our unit from March 1997 to February 2003. Among these cases, fourteen hip dislocations were complicated by femoral head fractures. Fracture of the femoral neck occurred during reduction in four. All four cases occurred in men, mean age 49.7 years, who were traffic accident victims (drivers or passengers). There were two Pipkin IV fracture-dislocations and two Pipkin II. The first reduction, achieved under general anesthesia in an emergency setting, was performed by an orthopedic surgeon in one patient and a general surgeon in three patients. Arthroplasty was used to treat the femoral neck fracture in three patients and pinning in one. We reviewed retrospectively the clinical and imaging data before and after reduction. Sub-capital fracture situated 4.0 cm (mean, range 3.5-4.5 cm) from the lesser trochanter occurred in all four cases. The head remained attached above and posteriorly to the acetabulum and was rotated less than 90 degrees . The fragment remaining in the acetabulum was displaced in two cases. In one patient, the fracture-dislocation of the head was associated with a fracture of the posterior rim of the acetabulum. This complication appears to result from an abrupt inappropriate reduction movement. The neck fracture would occur when capsulomuscular retention of the femoral head is associated with a head defect which catches on the rim of the acetabulum during the reduction movement. Neck fracture during reduction of traumatic hip dislocation is a serious complication. Prevention of this iatrogenic event requires a slow, progressive reduction limiting the trauma to a minimum; first intention open surgery may be required in selected cases.

Accidents, Traffic↗
PubMedDate not supplied

[Arthrodesis of the hip using a cobra plate. Comments on preliminary reports].

Authors report 50 arthrodesis of the hip joint with AO cobra-plate, and consider that it's a difficult procedure that will be performed by capable surgeons. The complications are infections (26 per cent), inestability after surgery with bend and break of implants occasioned by bad surgery. The most important badness was found by modifying the steps of the precise technique and our opinion is to perform exactly the arthrodesis of the hip joint as the AO group to obtain successful results (88 per cent).

Arthritis↗
PubMed2000

Chondritis dissecans of concave articular surfaces (acetabulum and glenoid fossa). Two case reports.

We report two patients who had chronic mechanical pain due to substantial cartilage defects documented by arthrography. One of these patients had pain in the hip and declined surgical treatment. The other had pain in the glenohumeral joint; surgery found a fissure in the glenoid fossa cartilage and provided prompt pain relief. These two cases serve as reminders that investigation of the cartilage and subchondral bone in young patients with mechanical pain should not be confined to the convex articular surfaces, although these are more likely to sustain trauma-related damage than concave surfaces. In both our patients, the diagnosis required thin-section computed arthrotomography.

Acetabulum↗
PubMed2003

Gender differences in recovery from injuries to the extremities in older persons. A prospective study.

PURPOSE: This paper examines gender differences in trajectories of basic activities of daily living after fall-related injuries to the extremities in independently living older people in the Netherlands. METHOD: The study comprised a prospective design. Data were collected from 31 men and 140 women at baseline, when they had not yet sustained injuries (hip fractures, other fractures or contortions and dislocations), and 8 weeks, 5 months and 12 months after their accident. Analysis of variance was used to test for differences in change in basic activities of daily living between baseline and follow-ups for men, for women and for the total study sample while adjusting for several covariates. RESULTS: The patients did not generally regain their pre-injury levels of functioning 12 months after their event. However, in contrast to the women, older men more closely reached their pre-injury levels of functioning. Although women deteriorated more than men, differences were not statistically significant at 8 weeks and 5 months post-injury. Long-term recovery, however, was significantly associated with gender when the impact of severity seemed to have expired. CONCLUSIONS: Recovery of basic activities of daily living one year after injuries to the extremities seems to be influenced by gender. Female patients recovered less well compared to males. These gender-related changes warrant concern and attention in clinical practice.

Accidental Falls↗
PubMed1998

Complications of epilepsy and a ruptured pyonephrosis: radiology to the rescue in the Brooks murder case.

A woman and her lover were accused of murdering the woman's husband. Five weeks after fracture/dislocations of both shoulders and a central fracture/dislocation of the right hip were diagnosed the woman's husband died of septicaemia consequent on a ruptured infected hydronephrosis. The shoulder and hip injuries and the ruptured hydronephrosis were attributed to a beating with a blunt instrument. A review of the medical records of the deceased, particularly his radiological examinations, led the authors to conclude that his joint injuries and ruptured kidney were not due to the alleged assault. The joint injuries were the consequence of epileptic seizures and the ruptured kidney was also due to natural causes. These medical opinions provided evidence that led to acquittal of the accused.

Epilepsy↗
PubMed1979

An uncemented total hip replacement: experimental study and review of 300 madreporique arthroplasties.

Mafreporique arthroplasty is not intended as a bustitute for acrylic cement stabilized arthroplasty but is available as an effective alternative. An experimental and clinical investigation including radiological analysis of 300 madreporique arthroplasties has convinced us of the reality and reliability of biological anchoring by endosteal osteogenesis. The madreporique method does not result in any local or general complications usually associated with the cement technique. Full weight-bearing is permitted at the same postoperative time as the cemented prosthesis. The results at early and interim follow-up periods compare favorably with cemented hip arthroplasties. Living bone that undergoes remodelling provides for long-term anchor of the prosthesis and eliminates the chemical intermediary which leads, more or less, with time to loosening of the implant in a significant number of cases.

Aged↗
PubMed2002

Uncoupling of bone turnover following hip replacement.

Studies using total hip replacement surgery as a model for acute hip injury have shown that bone mineral density of the proximal femur decreases 6-18% in the 6 months following surgery. To examine the acute biochemical mechanism associated with bone loss, we measured two indicators of bone formation [serum osteocalcin (OC), serum bone-specific alkaline phosphatase (BSAP)], as well as two markers for bone resorption [urine and serum N-telopeptide cross-linked collagen type 1 (NTx)], in 20 patients (10 men, 10 women, mean age 59.4 years) prior to hip replacement and 1-2 days postsurgery. The average OC value (ng/ml) decreased by 57.3% following surgery (7.5 +/- 4.3 to 3.2 +/- 1.1, P <0.001), and the average BSAP level (U/L) decreased by 27.6% (19.9 +/- 5.6 to 14.4 +/- 3.7, P <0.001). In contrast, levels of urine NTx (nmol BCE/mmol Cr) did not change significantly after the surgery (73.9 +/- 47.2 to 70.1 +/- 29.7). In addition, there was no change in serum NTx (nmol BCE) after surgery (11.8 +/- 2.3 to 11.8 +/- 3.0). Six months after surgery, bone mass had not changed significantly from baseline. These findings suggest that there is an uncoupling of bone turnover following hip replacement surgery which is characterized by significant reductions in bone formation without compensatory decreases in bone resorption, potentially leading to bone loss. Longer periods of follow-up are needed to assess long-term bone mass changes.

Alkaline Phosphatase↗
PubMed1996

Acetabular labral tears: evaluation with MR arthrography.

PURPOSE: To determine the usefulness of magnetic resonance (MR) arthrography in the diagnosis of acetabular labral tears. MATERIALS AND METHODS: MR arthrography of the hip was performed in 10 patients who underwent subsequent surgical evaluation. Eight arthrograms were obtained with intraarticular administration of gadolinium solution and two with intraarticular administration of normal saline. T1-weighted spin-echo (intraarticular gadolinium) or T2-weighted gradient-echo (intraarticular normal saline) images were obtained in the axial, sagittal, and coronal planes with use of a surface coil. Criteria for labral tears included labral blunting, absence, displacement, intrasubstance contrast material, and contrast material at the acetabular-labral junction. Labra with enlargement, intrasubstance intermediate signal intensity, or irregular margins were interpreted as degenerative. RESULTS: Labral tears were diagnosed in eight hips. Tears included six labra with contrast material that tracked at the acetabular-labral junction, one of which had associated intrasubstance extension. One tear was confined to the labral substance. The other tear exhibited absent labral tissue and an irregular remnant. One degenerative labrum and one normal labrum were identified. All MR arthrographic findings were confirmed at surgery. Extension of one anterosuperior tear into the posterosuperior labrum was not prospectively appreciated. CONCLUSION: In this preliminary study, MR arthrography appears to be a promising imaging modality for accurate diagnosis of acetabular labral tears.

Acetabulum↗