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At least 1,693 records · Page 94Linked to original sources
PubMed2006

Socket wall addition device in the treatment of recurrent hip prosthesis dislocation: good outcome in 12 patients followed for 4.5 (1-9) years.

BACKGROUND: Recurrent dislocation in total hip replacement is difficult to treat and causes severe morbidity. PATIENTS AND METHODS: 12 patients suffering dislocations were reoperated with a socket wall addition device (anti-luxation ring) for the Lubinus SPII prosthesis, and were followed up after a mean of 4.5 (1-9) years with regard to redislocation, function and radiographic loosening. RESULTS: 1 of the patients suffered a redislocation after almost 7 years of use. There was no loosening during the follow-up time. A Harris hip score of 87 (60-100), a health-related quality of life (EQ-5D) index of 0.8 (0.6-1.0) and total range of motion of 145 degrees (125-165) indicate that the patients had a level of function comparable to that of age-matched hip surgery patients with no complications. INTERPRETATION: The anti-luxation ring shows promising mid-term results and seems to provide an alternative to more extensive revision surgery for selected patients.

Acetabulum↗
PubMed1992

[Total hip replacement for congenital dislocation of the hip in elderly patients].

From 1986 to 1989, total hip replacement was performed on ten patients (twelve hips) with congenital dislocation of the hip. The average age of the patients was fifty-three years (ranging from forty-eight to sixty years), and the mean follow-up period was twenty-eight months (ranging from six to forty-eight months). Of the ten patients, eight had unilateral replacement and two had bilateral replacement, for a total of twelve arthroplasties. Eight arthroplasties were performed on the right and four on the left. Most patients left the hospital two to three weeks after operation. All the patients obtained satisfactory results. Only one patient developed late infection two years postoperatively. This patient occasionally used a cane for walking. The other patients had no hip pain, the motion of the hips was approximate to a normal person. No patient required a shoe-lift for limb-length discrepancy.

Age Factors↗
PubMed1992

[Post-traumatic recurrent hip joint dislocation].

Recurrent post-traumatic dislocation of the hip joint without an accompanying fracture is very rare. Delayed reduction and a too short immobilization periods seems to favor redislocation. One case is presented together with a discussion of the operative therapy and the intraoperative pathological-anatomical findings with respect to the literature.

Adult↗
PubMedDate not supplied

[Changes of biomechanical parameters in dysplasia of the hip by total hip replacement].

AIM: Dysplastic hips or dislocated hips lead to loss of muscle strength claudication, and finally to coxarthrosis. This study analytically compares the hip joint forces in normal, dysplastic hips and hips after implantation of a hip prosthesis for several positions. METHOD: The results of 173 total hip replacements in 153 cases of either severe congenital dysplasia or dislocation were analyzed. A 2 dimensional mathematical model of the hip was developed to evaluate the effects of surgically achievable mechanical alterations such as acetabular placement, femoral shaft-prosthetic neck angle, and neck length of the femoral prosthesis. RESULTS: 63 % of the hip prosthesis were implanted on the right, 72 % on the left. Before implantation, the femoral shaft-prosthetic neck angle in mean was 146 degrees +/- 10 degrees, after implantation it was 135 degrees. The hip centre was displaced on in average 10 mm distally. Postoperatively hip joint force was increased 21 %. CONCLUSION: Minimum joint contact forces occurred when the femoral shaft prosthetic neck angles were small. The loads on the hip were lowered significantly by placing the centre of the acetabulum as far inferiorly and medially as possible. Another important finding is that displacement of the hip centre distally has a great effect on muscle performance and hip joint force.

Adult↗
PubMed1988

Modular noncemented total hip arthroplasty for congenital dislocation of the hip. Case report and design rationale.

The highest rate of failure and the greatest technical difficulty in total hip arthroplasty occurs with congenital dislocation of the hip (CDH). Predisposing factors are failure to secure special femoral components to fit an extremely narrow and straight medullary cavity with space for only a very thin mantle of cement. The acetabulum is usually atrophic, and bone grafts are commonly required to support a small-diameter cup. The young age of the average patient and high levels of activity contribute to cement failure. A new modular cementless prosthesis provides excellent immediate skeletal fixation and pain relief in CDH patients. Five modular components are screwed or press-fit into bone. The modular approach facilitates implantation, reduces inventory, and is adaptable to unforeseen problems. These advantages are ordinarily absent with standard or custom cemented components. Modular components may also permit easier revision. The prosthesis is made of titanium alloy for its superalloy strength, elastic modulus, and bioinertness. By omitting the cement mantle, press-fit is obtained with the largest possible implant. The large size minimizes stem breakage in these young, small bones. Excellent short-term results suggest that modular cementless implants are indicated in some patients with CDH.

Adult↗
PubMed1980

Total hip replacement in congenital dislocation of the hip.

Twenty cases of congenital dislocation of the hip were treated with total hip replacement. The hips were completely dislocated with the femoral head supported by a nearthrosis proximal to the original acetabulum. The concept was to reconstruct the hip with an acetabular cup at the site of the original acetabulum even if a portion of the proximal end of the femur had to be sacrificed in the process. The Harris prosthesis appears, in most instances, to be the most suitable type of prosthesis but it was concluded that the surgeon needs a selection or prostheses for this procedure. Nine-tenths of the patients were improved by the procedure and the complications could mostly be successfully dealt with. This type of surgery is justified in cases with special indications.

Adult↗
PubMed1981

Late congenital dislocation of the hip.

Congenital dislocation of the hip in a child over the age of 4 may be discovered as a late untreated displacement, presenting with subluxation or dislocation, or as a late treated displacement presenting as a subluxating or subluxated hip. Conservative treatment is inadequate in untreated dislocations. Surgical reduction is the only possible procedure, associated with shortening femoral. The procedure may be used up to the age of 7 in bilateral cases, and up to the age of 12 in unilateral cases. Subluxating hips are recognised on the anteroposterior radiograph by a break in Shenton's line. A delayed Trendelenburg sign may also been seen. In such cases, innominate osteotomy or femoral derotation osteotomy should be performed, according to the anatomical defects present. Femoral shortening may be indicated in cases of increased length of the lower limb, associated with residual coxa valga or over growth following a previous rotation osteotomy to avoid the mechanical effects on the opposite hip. In cases of subluxated hip, varus upper femoral osteotomy may be indicated, or a Chiari osteotomy in painful hips. It is concluded that routine follow-up radiography is necessary, surgery being indicated as soon as a loss of acetabularcover of the femoral head is detected.

Adolescent↗
PubMed1990

Traumatic posterior luxation of the hip.

The long-term outcome of treatment of posterior hip dislocations was studied in 60 patients. Thirty-two patients had concomitant fractures of the acetabular rim and seven had also femoral head fractures. Treatment consisted of immediate reduction, followed by gentle traction during one week and progressive weight-bearing over six weeks. Thirteen patients needed internal fixation of the acetabular fracture. Fourty-six patients could be followed for a median of 6.5 years. Fifteen patients, all with associated fractures, had late complications: peri-articular ossifications (5), avascular necrosis of the femoral head (1), mild osteo-arthrosis (5) and pain of unknown origin (4). No complications were noted in patients with simple posterior dislocation of the hip. Simple traumatic posterior hip dislocation has an excellent prognosis. Poor results only occur in case of associated fractures.

Accidents, Traffic↗
PubMed2004

Efficacy of abduction bracing in the management of total hip arthroplasty dislocation.

A retrospective review of total hip arthroplasty (THA) dislocations was performed to determine the effectiveness of abduction bracing following closed reduction. Patients were grouped as a first-time dislocation (n = 91) or recurrent dislocation (n = 58) and whether or not they received an abduction brace; re-dislocation defined failure of treatment. The mean follow-up was 4.0 years in the first-time group and 3.7 years in the recurrent group. Among patients treated for first-time dislocations, 61% re-dislocated with a brace and 64% of nonbraced patients re-dislocated. In the recurrent group, 55% re-dislocated with a brace, whereas 56% re-dislocated without a brace. Chi-square analysis revealed that observed differences were not significant. There was no significant difference among groups with regards to age, sex, operative side, or significant surgical parameters. Abduction bracing following closed reduction of THA dislocation is ineffective in preventing re-dislocation.

Arthroplasty, Replacement, Hip↗
PubMed1983

Traumatic dislocation of the hip.

Traumatic dislocation of the hip (TDH) is an absolute orthopedic emergency that is increasing steadily in incidence. Sixty-two to ninety-three percent of reported cases were the result of high-speed motor vehicle accidents in which seat belts were not used. Post-TDH complications and morbidity, particularly femoral head necrosis, are related to the severity of injury, skeletal maturity, and duration of dislocation. Prompt, gentle reduction within 12 hours remains the cornerstone of successful therapy. In a variety of other clinical condition, TDH may be masked, and specific appropriate evaluation is thus necessary to detect the occasionally occult TDH. The regular use of seat belts would virtually eliminate this injury.

Accidents, Traffic↗
PubMed1992

Bipolar hip arthroplasty for recurrent dislocation after total hip arthroplasty. A report of three cases.

Recurrent dislocation after total hip arthroplasty is often a difficult complication to manage. Bipolar prostheses may be useful in these cases because motion can occur at two bearing surfaces and thus permit the greater range of motion necessary to dislodge the head from the acetabulum. The bipolar head is also larger than a conventional total hip femoral component, so a greater volume must be displaced from the acetabulum for dislocation to occur. Three patients with recurrent dislocation of a total hip prosthesis were successfully treated by conversion to bipolar devices after failure of multiple surgical procedures and treatment even with braces.

Adult↗
PubMed1988

[Pediatric traumatic hip joint dislocation--overview of the topic based on 9 personal, previously unpublished cases].

We report on 8 patients with 9 traumatic hip dislocations in childhood. The follow-up period was between 1 and 21 years. The majority of these rare injuries were caused by major, sometimes, however, by minor trauma. The best prognosis is given by an immediately performed closed reduction in the absence of bony injuries. Five of our patients had associated bony injuries (fractures of the femoral shaft, acetabular fractures). Two of our patients developed an avascular necrosis of the femoral head which needed further surgery; in one case we found a premature closure of the proximal femoral epiphyseal plate, a fourth patient developed premature osteoarthritis due to a concomitant acetabular fracture. Clinical and radiological examination of all other patients showed no residues of the former injury.

Acetabulum↗
PubMedDate not supplied

The c/b ratio in the radiological monitoring of the hip joint in congenital dislocation of the hip.

We report a method of monitoring hip joint development for congenital dislocation of the hip in children. The c/b ratio was measured on serial radiographs of 41 hips in 38 patients. The measurement was compared to c/b ratio obtained from normal hips. It was used to detect concentric reduction or its loss by migration of the femoral head during growth. The age at diagnosis ranged from 8 months to 10 years 6 months. The normal c/b ratio was found to change little with age. Deviation of the c/b ratio from normal in congenital dislocation of the hip resulted in a poor outcome and identified cases requiring further surgical intervention. This measurement of c/b ratio is simple and accurate, using easily determined points. The graphic display promotes critical analysis of situation and allows selection of cases at risk for treatment.

Child↗
PubMed1983

New possibilities for the diagnosis of congenital hip joint dislocation by ultrasonography.

Six hundred infant hips were examined with ultrasonography and the findings compared to radiography. Twelve hips were dislocated and could be recognized as such on the sonograms. The development of the acetabular roof can be determined through assessment of the preformed, nonosseous acetabular rim. Consequently, dysplasia of the hip can be recognized early. Ultrasonography does not replace clinical investigation, but it does reduce the need for radiography, reducing the exposure of the child to radiation.

Hip Dislocation, Congenital↗
PubMed2006

Subtrochanteric valgus osteotomy for chronically dislocated, painful spastic hips.

BACKGROUND: Many treatments have been proposed for a painful chronically dislocated hip in a child with spasticity who is unable to walk. The valgus subtrochanteric femoral osteotomy was originally described as a treatment for a missed congenital hip dislocation in a young adult who was able to walk. The purpose of this study was to investigate the outcomes of a modified Hass subtrochanteric valgus osteotomy for the treatment of symptomatic chronic hip dislocations in patients with spasticity due to neuromuscular disorders. METHODS: Patients were identified by surgical codes. Medical records were reviewed for surgical indications, complications, and results. Preoperative and postoperative radiographs were assessed. Caregivers were contacted and asked to complete a brief survey detailing the pain that the patient experienced with daily activities before and after surgery as well as other information. RESULTS: Thirty-one Hass osteotomies in twenty-four consecutive patients were performed by one surgeon between 1995 and 2005. Although fifteen patients (63%) had at least one complication (including urinary tract infection, pneumonia, hardware failure, and heterotopic bone formation), the majority of the patients were doing well at an average of forty-four months postoperatively. The duration for which the patient could sit, ease of transfers, and ease of diaper changes had all improved according to the caregivers. Fourteen of fifteen caregivers who replied to the question stated that they were satisfied with the operative results and would have the procedure done again if they had the decision to make. CONCLUSIONS: The modified Hass osteotomy provides children who have symptomatic hip dislocations due to neuromuscular disorders with reproducible pain relief and improves ease of positioning by their caregivers. The complication rate, although high, was comparable with that of similar surgical procedures in this patient population. Concurrent femoral head resection at the time of the proximal femoral osteotomy was not necessary in this group of patients.

Adolescent↗