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At least 163 records · Page 9Linked to original sources
PubMed2005

Minimally invasive total hip arthroplasty: internet claims made by members of the Hip Society.

We searched the Internet for Web sites related to 106 members of the Hip Society. Web sites (private and/or hospital affiliated) for each surgeon were evaluated for the term "minimally invasive total hip replacement" and its related names. One hundred two of the 106 Hip Society members (96%) had Web sites. Of the 102 Web sites, eight Web sites had links to multiple members of the Hip Society, resulting in 94 distinct sites. Nineteen percent (19 of 102 members) of Hip Society members made reference to minimally invasive hip surgery. 11% (10 of 94 sites) of Web sites included references to minimally invasive hip surgery. When the terms fast or quicker recovery were evaluated, 14% (14 of 102 members) of surgeons used these terms. There were references to these terms on 6% (six of 94 sites) of the members' Web sites. Two incision techniques were discussed by only 10% (10 of 102 members) of members, and reported on 4% (four of 94 sites) of Web sites. In contrast, only 26% (five of 19 members) of Hip Society members and 30% (three of 10 sites) of Web sites reported the risks. Although minimally invasive hip arthroplasty frequently is discussed and advertised by some surgeons, only a small percentage of Hip Society members actually promote or make claims to these techniques on their Web sites.

Arthroplasty, Replacement, Hip↗
PubMed2001

Changes in hip and ankle range of motion and hip muscle strength in 8-11 year old novice female ballet dancers and controls: a 12 month follow up study.

OBJECTIVES: To evaluate in a 12 month longitudinal study changes in hip and ankle range of motion and hip muscle strength in young female novice ballet dancers. METHODS: Fifty three of the original 77 (69%) female dancers aged 8-11 years and 40 of the original 49 (82%) controls returned for follow up measurements one year later. Supine right active hip external (ER) and internal (IR) rotation were measured using an inclinometer. A turnout protractor was used to assess standing active turnout range. Range of right weight bearing ankle dorsiflexion and calf muscle length were measured in a standing lunge position using an inclinometer. A manual muscle tester was used to assess right hip flexor, IR, ER, abductor and adductor strength. RESULTS: The mean (SD) 12 month change in hip ER did not differ between dancers (11.7 (11.3)degrees) and controls (8.1 (17.6)degrees). Dancers gained 12.5 (13.5)degrees hip IR which was significantly greater than controls (0.5 (13.9)degrees). Greater IR change was associated with improved IR strength (r = 0.34, p<0.001). Dancers increased total turnout (12.0 (16.7)degrees) significantly more than controls (2.2 (20.0)degrees). There was no significant change in ankle dorsiflexion range in either group. Dancers and controls increased in all measures of hip muscle strength (p<0.001) and dancers achieved significantly greater gains in three out of five muscle groups (all, p<0.05). CONCLUSIONS: Total hip range of motion increased in both ballet students and controls at this young age. However, ankle dorsiflexion did not, which is probably due to this movement being blocked by bony apposition, rather than soft tissue stretch. This has implications for ballet teachers, as it has long been accepted that this movement could be improved with training. Dancers had greater increases in hip strength after 12 months compared with controls in muscles specific for ballet, suggesting that hip strength can be trained at this young age. Whether these gains are permanent requires further study.

Analysis of Variance↗
PubMed2003

Effect on hip fractures of increased use of hip protectors in nursing homes: cluster randomised controlled trial.

OBJECTIVE: To assess the effects of an intervention programme designed to increase use of hip protectors in elderly people in nursing homes. DESIGN: Cluster randomised controlled trial with 18 months of follow up. SETTING: Nursing homes in Hamburg (25 clusters in intervention group; 24 in control group). PARTICIPANTS: Residents with a high risk of falling (459 in intervention group; 483 in control group). INTERVENTION: Single education session for nursing staff, who then educated residents; provision of three hip protectors per resident in intervention group. Usual care optimised by brief information to nursing staff about hip protectors and provision of two hip protectors per cluster for demonstration purposes. MAIN OUTCOME MEASURE: Incidence of hip fractures. RESULTS: Mean follow up was 15 months for the intervention group and 14 months for the control group. In total 167 residents in the intervention group and 207 in the control group died or moved away. There were 21 hip fractures in 21 (4.6%) residents in the intervention group and 42 hip fractures in 39 (8.1%) residents in the control group (relative risk 0.57, absolute risk difference -3.5%, 95% confidence interval -7.3% to 0.3%, P=0.072). After adjustment for the cluster randomisation the proportions of fallers who used a hip protector were 68% and 15% respectively (mean difference 53%, 38% to 67%, P=0.0001). There were 39 other fractures in the intervention group and 38 in the control group. CONCLUSION: The introduction of a structured education programme and the provision of free hip protectors in nursing homes increases the use of protectors and may reduce the number of hip fractures.

Accidental Falls↗
PubMed2006

Effectiveness of hip protectors for preventing hip fractures in elderly people: systematic review.

OBJECTIVES: To present the updated results of systematic review of the current evidence for the effectiveness of hip protectors from reports of completed randomised trials, and to explore the evolution of that evidence. DESIGN: Systematic review with meta-analysis. DATA SOURCES: Cochrane Bone, Joint, and Muscle Trauma Group trials register (January 2005), Cochrane central register of controlled trials (Cochrane Library Issue 1, 2005), Medline (1966 to January 2005), Embase (1988 to January 2005), and CINAHL (1982 to December 2004). Other databases and reference lists of relevant articles were searched and some trialists were contacted. REVIEW METHODS: Randomised or quasirandomised controlled trials reporting the incidence of hip fractures, pelvic fractures, and other fractures in elderly people offered hip protectors compared with a control group that was not. RESULTS: Outcomes for fracture were available from 14 randomised and quasirandomised trials. Pooling of data from 11 trials carried out in nursing or residential care settings, including six cluster randomised studies, showed evidence of a marginally statistically significant reduction in incidence of hip fracture (relative risk 0.77, 95% confidence interval 0.62 to 0.97). Pooling of data from three individually randomised trials of 5135 community dwelling participants showed no reduction in hip fracture incidence with provision of hip protectors (1.16, 0.85 to 1.59). No evidence was found of any significant effect of hip protectors on incidence of pelvic or other fractures. No important adverse effects of hip protectors were reported, but compliance, particularly in the long term, was poor. CONCLUSIONS: On the basis of early reports of randomised trials, hip protectors were advocated. Accumulating evidence indicates that hip protectors are an ineffective intervention for those living at home and that their effectiveness in an institutional setting is uncertain.

Aged↗
PubMed2003

Efficacy of a specially designed hip protector for hip fracture prevention and compliance with use in elderly Hong Kong Chinese.

BACKGROUND: Hip protectors, while effective in prevention of hip fractures, have been designed for a Caucasian body build and may not be suitable for Asian subjects living in a subtropical climate. OBJECTIVE: Hip protectors and accompanying shorts were specially designed for use for the Chinese body build and subtropical climate, and tested for compliance and efficacy in fracture prevention. METHOD: A pragmatic study examining compliance with the wearing of hip protectors, and effectiveness in preventing hip fractures (using a case control design), in 302 subjects wearing hip protectors and 352 control subjects. RESULTS: Overall compliance varied from 55 to 70%. The relative risk for hip fracture was 0.18 (0.04-0.79), relative risk reduction 82%, and the number of subjects needing to wear a hip protector to prevent one fracture was 33 (19-117). CONCLUSION: Hip protectors adapted for use in Chinese people appear to reduce hip fractures in routine clinical practice.

Accidental Falls↗
PubMed2005

Prevalence of traumatic hip and pelvic fractures in patients with suspected hip fracture and negative initial standard radiographs--a study of emergency department patients.

OBJECTIVES: To determine the prevalence of hip and pelvic fractures in emergency department (ED) patients with hip pain and negative standard initial radiographs. METHODS: This was a retrospective, cohort study at an academic, community-based ED. ED patients presenting during a one-year period with hip pain for whom a plain-film radiograph was obtained were included. Eligible patients were identified by query of electronic records. Plain radiographs and magnetic resonance images (MRIs) were ordered at the discretion of the treating physician. Initial plain radiographs were read at the point of care by board-certified radiologists. MRI images were reviewed by radiologists with fellowship training in musculoskeletal imaging. Structured follow-up at more than one month postvisit was conducted to rule out a subsequent diagnosis of hip fracture. Ninety-five-percent confidence intervals (95% CIs) and kappa (kappa) were calculated as appropriate. RESULTS: Seven hundred sixty-four of 895 patients (85.3%) had follow-up completed (study group). Within the study group, 219 patients (29%) had evidence of fracture on initial radiographs. Of the 545 patients with negative initial radiographs, 62 patients (11.4%) underwent hip MRI during the ED visit. MRI identified 24 additional patients with hip fractures. Interobserver agreement for the presence of fracture on MRI was very good (kappa = 0.847). For patients with negative initial plain radiographs who did not have a hip MRI, follow-up did not identify any of these patients as having a subsequent diagnosis of fracture. Thus, 24 of 545 (4.4%; 95% CI = 3.0% to 6.5%) patients with negative initial plain radiographs had a hip fracture. CONCLUSIONS: In this cohort of ED patients with symptoms suspicious for hip fracture who had negative standard radiographs, the authors found that 4.4% were subsequently diagnosed as having fracture. Further studies are warranted to identify characteristics of patients requiring advanced hip imaging studies.

Accidental Falls↗
PubMed1992

Hip mineral density in females with a recent hip fracture.

To evaluate the role of local bone mineral density (BMD) in the etiology of hip fractures, we measured the hip BMD using dual photon absorptiometry in 29 females who had recently suffered a hip fracture associated with minimal or moderate, but not major, trauma and compared their BMD to those of 14 young normal females, 58 early postmenopausal normal females, 13 age-matched normal females, and 114 spinal osteoporotic females without a hip fracture. Hip-fractured patients had a BMD significantly lower (P less than 0.001) than that of all other studied groups, suggesting that a low hip BMD is associated with hip fracture risk. A femoral neck BMD below 0.75 g/cm2 suggests an increased likelihood for developing a hip fracture. Peak BMD was measured at 1.03 g/cm2, a value comparable to published normative data. Thus, a loss in hip BMD of approximately 30% from peak mineral density appears necessary before a hip fracture may occur after moderate trauma.

Adult↗
PubMed2004

Population trends in BMD testing, treatment, and hip and wrist fracture rates: are the hip fracture projections wrong?

UNLABELLED: A worldwide epidemic of hip fractures has been predicted. Time trends in BMD testing, bone-sparing medications and hip and wrist fractures in the province of Ontario, Canada, were examined. From 1996 to 2001, BMD testing and use of bone-sparing medications increased each year, whereas despite the aging of the population, wrist and hip fracture rates decreased. INTRODUCTION: If patients with osteoporosis are being diagnosed and effective treatments used with increasing frequency in the population, rates of hip and wrist fractures will remain stable or possibly decrease. We report here time trends in BMD testing, prescriptions for bone-sparing medications, hip and wrist fracture rates, and population projections of fracture rates to 2005 in the province of Ontario, Canada. MATERIALS AND METHODS: Ontario residents have universal access to Medicare. To examine time trends in BMD testing, all physician claims for DXA from 1992 to 2001 were selected from the Ontario Health Insurance Plan (OHIP) database. Trends in prescribing were examined from 1996 to 2003 using data from the Ontario Drug Benefit plan, which provides coverage to persons > or = 65 years of age. Actual numbers of hip and wrist fractures were determined for 1992-2000 and population projections for 2001-2005 using time-series analysis. Wrist fractures were identified in the OHIP database and hip fractures through hospital discharge abstracts. RESULTS: From 1992 to 2001, the number of BMD tests increased 10-fold. There has been a steady increase in the number of persons filling prescriptions for antiresorptives (12,298 in 1996 to 225,580 in 2003) and the majority were for etidronate. For women, the rate of decline for wrist fractures is greater than that for hip fractures. The rate of hip fracture was fairly constant around 41 per 10,000 women > or = 50 years between 1992 and 1996. In 1997, the hip fracture rate began to decrease, and the population projections suggest that this downward trend will continue to a rate of 33.1 per 10,000 in 2005. CONCLUSIONS: Our findings suggest that fracture rates may be on the decline, despite the aging of the population, because of increased patterns of diagnosis and treatment for osteoporosis.

Aged↗
PubMed2005

Patients with knee osteoarthritis have lower total hip bone mineral density in the symptomatic leg than in the contralateral hip.

Osteoarthritis (OA) of the knee is common in the aging population. In patients with OA, bone mineral density (BMD) is usually increased, but the fracture rate does not appear to be systematically lower than in age-matched healthy controls. The aim of our study was to describe hip BMD in patients presenting with unilateral symptomatic knee OA. Patients with painful knee OA were prospectively included in a single-center, randomized, double-blind, placebo-controlled clinical trial to evaluate the structure-modifying efficacy of an oral chondroitin sulfate treatment on the knee joint. The majority of these patients underwent additional measurements of BMD of their lumbar spine and both hips using dual-energy X-ray absorptiometry (DXA). The hip BMD values of the leg with symptomatic knee OA were compared with the contralateral hip. One-hundred and sixty-one patients (81 men and 80 women; aged 62.6 +/- 9.2 yr, range 40-82 yr) underwent DXA. The median total hip BMD was higher than in age-matched controls, but patients had a relatively lower hip BMD in the knee OA-affected leg (p = 0.001). Our knee OA patients rarely presented with concomitant osteoporosis, but usually had a relatively lower hip BMD on the affected leg. Therefore, we suggest that the hip of the leg with symptomatic knee OA should be measured if DXA is acquired only at one hip. Future studies have to assess whether the relative decrease of BMD at the hip of the leg with knee OA might influence fracture incidence.

Absorptiometry, Photon↗
PubMed1999

Dynamic hip screw versus 3 parallel screws in the treatment of garden 1 + 2 and garden 3 + 4 cervical hip fractures.

OBJECTIVE: The main objective of this study was to evaluate the failure rate following operations of undisplaced and displaced cervical hip fractures with a dynamic hip screw compared with 3 parallel screws. DESIGN: The study was retrospective. The minimum follow-up time was 1 year. The data tta collested between January 1990 and December 1993. SETTING: University Hospitals. PATIENTS: A total of 456 patients (352 women and 104 men) with cervical hip fractures were included. The mean age was 80 years (range 51-100 years). INTERVENTION: This was internal fixation of the fractured hip with a dynamic hip screw or 3 parallel screws. MAIN OUTCOME MEASURES: Failure was defined as nonunion, fixation failure or avascular necrosis and reoperation was found indicated. The 3 months mortality rate, the wound infection rate, the delay between admission and time of surgery and the blood transfusion requirement were also recorded. RESULTS: A total of 456 cervical hip fractures were operated with a dynamic hip screw or 3 parallel screws. The failure rate for fractures treated with a dynamic hip screw was 14/98 = 14% for Garden 1 + 2 fractures and 43/108 = 40% for Garden 3 + 4 fractures. The failure rate for fractures treated with 3 parallel screws was similar: 23/154 = 15% for Garden 1 + 2 fractures and 38/196 = 40% for Garden 3 + 4 fractures. The average follow-up time was 2.5 years. CONCLUSION: Operation of cervical hip fracture with a dynamic hip screw or 3 parallel screw seem to give similar results.

Aged↗
PubMedDate not supplied

Clubfoot and developmental dysplasia of the hip: value of screening hip radiographs in children with clubfoot.

Clubfoot and hip dislocations are common conditions seen by pediatric orthopedists. In the evaluation of a child with clubfoot, most texts recommend a hip screening radiograph to rule out occult hip dysplasia. Between 1983 and 1998, 349 patients were treated for idiopathic clubfoot. Almost all feet required surgical correction. The average follow-up was 8.4 years. Of these patients, 127 had hip screening x-rays during their treatment of clubfoot. The remaining 222 patients were followed clinically for an average of 9.6 years. Of the 127 patients with hip screening x-rays, 1 was found to have hip dysplasia (0.8%). Of the 222 without hip screening x-rays, none developed signs or symptoms of hip pathology during their clinical follow-up period. The overall rate of hip dysplasia in the idiopathic clubfoot population in this series was less than 1.0%. Screening hip radiographs in the idiopathic clubfoot population are probably not warranted.

Adolescent↗
PubMedDate not supplied

[Artificial hip replacement in young patients with hip dysplasia--long-term outcome after 10 years].

PURPOSE: The experience gained in three decades of hip arthroplasty includes observations on patients with congenital dysplasia of the hip (CDH) under 20 years of age. A study dealing with hip arthroplasty in patients with osteoarthritis following CDH in such young age is not known in the literature. In the present study we report about a long-term follow-up of 41 total hip arthroplasties which were performed using bone-cement in 29 patients from 1966 to 1995. METHODS: The evaluation of this retrospective study was performed with an questionnaire and a clinical and radiological investigation (Harris hip score, Sutherland activity score). RESULTS: 18 patients with 27 THR (62%) were evaluated clinically and radiologically after a mean duration of follow-up of 10 years and 8 months. Seven additional THR had been revised in the meantime. Kaplan-Meier survival analysis showed a survival rate after 10 years of 64%. Acetabular loosening occurred three times as often as femoral loosening (overall revision rate 41.2%). CONCLUSION: The overall loosening rate of total hip replacement of young patients is significantly elevated. These findings suggest that total hip replacement in young patients with dysplastic hips should be considered most carefully. Implantation of a hip prosthesis is only justified in special cases where alternative procedures are contra-indicated or unacceptable.

Adolescent↗
PubMed2001

Is the Harris hip score system useful to study the outcome of total hip replacement?

Although the Harris hip score frequently is used to assess the outcome of total hip replacement, only a few minor validity tests have been presented. The aim of this study was to perform a validity test of the Harris hip score and to test its reliability. Two cohorts were studied. First, 58 patients who had undergone total hip replacement 2 to 10 years earlier were evaluated by an orthopaedic surgeon and an experienced physiotherapist using the Harris hip score. The patients also answered the Western Ontario and McMaster University Osteoarthritis Index and the Medical Outcomes Study 36-Item Short-Form Health Survey. Second, 1,056 patients answered the Western Ontario and McMaster University Osteoarthritis Index and the Medical Outcomes Study 36-Item Short-Form Health Survey questionnaires. The results were compared with those of a subcohort of 344 patients who were evaluated using the Harris hip score. The following items were tested: content validity, convergent and divergent construct validity, criterion validity, test and retest reliability, internal consistency reliability, and interobserver reliability. The Medical Outcomes Study 36-Item Short-Form Health Survey, Western Ontario and McMaster University Osteoarthritis Index, and the Harris hip score showed high validity and reliability. The Harris hip score can be used by a physician or a physiotherapist to study the clinical outcome of hip replacement.

Activities of Daily Living↗
PubMed2004

Hip mechanics after posterior structure repair in total hip arthroplasty.

This study investigated the rotational response of the hip with different repairs of posterior structures after using the posterior approach in total hip replacement. Five groups were tested: (1) the normal hip without a replacement, (2) the normal hip with a vented capsule, (3) no repair of the capsule and external rotators after total hip replacement, (4) repair of only the piriformis tendon, and (5) repair of the capsule and external rotators as a flap of tissue (capsule, piriformis, obturator internus, gemellae, and quadratus) to the posterior aspect of the greater trochanter. Hemipelvis cadaveric specimens were attached to a joint testing device for testing at full extension, 30 degree, 60 degree and 90 degree hip flexion as internal and external rotation was applied to the femur and the load deflection curves were recorded. Specimens after total hip replacement were externally rotated in full extension until dislocation occurred and the maximum torque was recorded. Each specimen then was rotated internally at 90 degree flexion to the point of dislocation and the maximum torque was recorded for comparison as well. The posterior approach had significantly decreased internal rotational support with no repair or only piriformis repair. When the capsule and external rotators were repaired, a more normal load deflection curve resulted when comparing the full repair group with the normal hip. Significantly higher torque was needed to dislocate the hip in flexion when a full posterior repair was done, and most specimens dislocated in flexion without complete failure of the repair.

Arthroplasty, Replacement, Hip↗
PubMed2005

[Total hip arthroplasty for patients with osteoarthritis secondary to hip developmental dysplasia].

OBJECTIVE: To investigate the methods of restoring normal level of rotation center of the hip and limb length in patients with osteoarthritis (OA) secondary to developmental dysplasia of the hip (DDH) using total hip arthroplasty (THA). METHODS: From January 2000 to January 2003, total hip arthroplasties were performed for 21 patients (26 hips) with OA secondary to DDH. There were 19 females and 2 males with an average age of 51 years (range from 40 to 66 years). Based on radiographic classification of Crowe, there were 12 in type I, 5 in type II, 2 in type III and IV respectively. In addition to the standard procedure of THA, the methods of restoring normal level of rotating center of the hip included structural bone autografting and medialization of the cup. The methods of limb length restoration included carefully preoperative planning and intraoperative soft tissue release. During the follow-up period at 3, 6, 12 months postoperatively and then annually thereafter, rotation center of the hip and limb length were assessed radiographically. Harris score system (HSS) was used for clinical evaluation. RESULTS: All the patients were followed up for a mean time of 26.4 months (range from 12 to 48 months). All the patients had restoration of the normal level of rotation center of the hip. At the latest follow-up, Harris score was improved from preoperative 35 points (range from 12 to 68 points) to postoperative 94 points (range from 74 to 100 points). CONCLUSION: In addition to standard procedure, the restoration of normal level of rotation center of the hip could be achieved by structural bone autografting and medialization of the cup in THA for patients with DDH. Careful preoperative planning and intraoperative soft tissue release could restore limb length.

Adult↗
PubMed2006

[Total hip arthroplasty for treatment of developmental dysplasia of the hip].

OBJECTIVE: To summarize the techniques of the total hip arthroplasty in the treatment of osteoarthritis secondary to developmental dysplasia of the hip joint (DDH). METHODS: Between February 1986 and November 2004, a total of 32 hips in 24 patients with advanced osteoarthritis secondary to DDH underwent the total hip arthroplasty. Among the patients, 4 were male and 20 were female, with their ages ranging from 33 to 59 years and an average age of 47 years. The bilateral arthroplasty was performed in 8 patients and the unilateral arthroplasty in 16 patients. The patients mainly suffered from pain and claudication. According to the Hartofilakidis classification, semidislocation occurred in 2 hips, low-dislocation in 21 hips, and high-dislocation in 9 hips; and the Harris scores before operation were 56.70 +/- 2.75, 36.09 +/- 4.16, and 29.45 +/- 2.16, respectively. RESULTS: All the patients were followed up for 6 months to 8 years (averaged 3 years and 4 months). The Harris scores after operation were 93.10 +/- 2.10, 92.7 +/- 3.20, and 88.09+/- 3.67, respectively. The differences between preoperation and postoperation were significant (P < 0.01). All the patients were pain-free and there was no sign of aseptic loosening and subsidence. CONCLUSION: The total hip arthroplasty is an effective method for the treatment of osteoarthritis secondary to DDH. The key techniques for the total hip arthroplasty are as follows: deepening the medial wall of the acetabulum, improving the techniques of the bone graft, and firmly placing the acetabular component in the true acetabulum.

Acetabulum↗
PubMed1978

Myelodysplasia. The influence of the quadriceps and hip abductor muscles on ambulatory function and stability of the hip.

In an analysis of motor function, ambulatory function, and hip stability in sixty-five patients with myelodysplasia, four motor-function groups based on the strength of the quadriceps and hip abductor muscles were identified. Retrospectively, it was evident that based on these groups, it would have been possible to predict which hips would remain stable, what level of ambulatory function the patients could achieve, and whether treatment to reduce and stabilize the hips was indicated. Fifty-seven of fifty-eight hips in the twenty-nine patients with functioning quadriceps muscles but non-functioning hip-abductor muscles were either subluxated or dislocated. Thirty-nine of the remaining forty-six patients with functioning quadriceps muscles could walk. In this series, three operative procedures were used to treat hip subluxation: varus osteotomy, varus osteotomy combined with iliopsoas transfer, and iliopsoas transfer alone. One shelf procedure was also done. Varus osteotomy was the best procedure for hip subluxation while posterior iliopsoas transfer, either alone or in combination with a varus osteotomy, was of questionable value. Treatment of hip instability (subluxation or dislocation) in patients without quadriceps function was not necessary.

Adolescent↗
PubMed1996

Severity of radiographic findings in hip osteoarthritis associated with total hip arthroplasty.

OBJECTIVE: The decision to perform total hip arthroplasty (THA) in patients with osteoarthritis (OA) of the hip is based largely on patients' reports of pain and disability and not on radiographic findings of OA. We determine the severity of radiographic OA and its association with disability in patients undergoing THA. METHODS: Individual radiographic features (osteophytes, joint space narrowing, sclerosis, cysts, deformity) and global severity of hip OA were assessed in 95 consecutive elderly patients with hip OA undergoing THA who were enrolled in a Patient Outcome Research Team (PORT) project. RESULTS: Eighty-seven patients (91.5%) had either severe or moderate OA in the hip to be replaced; 17% of these had a previous contralateral THA. Only 8 patients (8.4%) had mild or no signs of OA in the hip to be replaced and 4 (50%) of these patients had their opposite hip replaced previously. CONCLUSION: These data indicate that radiographic features of moderate to severe hip OA are associated with clinical findings and the necessity to perform THA in the majority of patients. Patients who have had a prior hip replacement, however, may be more likely to have a contralateral replacement done earlier (p = 0.03), before radiographic signs are evident.

Aged↗