Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “HIP JOINT”

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 397 records · Page 22Linked to original sources
PubMed1998

Sensory nerve endings in monkey hip joint capsule: a morphological investigation.

This study was undertaken to identify the sensory nerve endings in the monkey hip joint capsule. The capsules from six monkeys were stained in bulk by using a modified gold chloride method. Three morphologically distinct nerve endings: Type I, II and IV receptors resembling Ruffini end organs. Pacinian corpuscles and free nerve endings, respectively, were identified. The results showed that the hip joint capsules were densely innervated. Based on the present findings it is suggested that the monkey hip joint capsule is endowed with several types of afferent nerve endings, thus providing the anatomical basis for discriminating afferent outflow to the central nervous system.

Animals↗
PubMed2006

Dynamics of hip joint effusion after posterior soft tissue repair in total hip arthroplasty.

Dislocation after total hip replacement is more common in the early, postoperative period. Postoperative intraarticular haematoma and remaining seroma fluid and/or weakened posterior soft tissue wall may be contributing factors. Our purpose was to compare and follow with sonography the resorption of the postoperative volume of intraarticular fluid/synovial oedema after total hip arthroplasty (THA) with or without posterior soft tissue repair. Thirty-three consecutive patients with hip osteoarthritis were admitted for THA. All of them received the same type of cemented implant. Patients were randomised for posterior soft tissue repair or not. Sonography, measuring the anterior capsular distension, indicating the volume of intraarticular fluid/synovial oedema in the prosthetic hip joints, was performed after six and 12 months in all patients. At six months postoperatively greater capsular distension, i.e., remaining volume of intraarticular fluid/synovial oedema, was observed in the group with posterior soft tissue repair than in the group without. After one year the capsular distension had decreased in both groups and there was no significant difference between the groups. Our results show that posterior soft tissue repair after THA is associated with increased capsular distension during the first six months. After 12 months the volume of intraarticular fluid/synovial oedema is the same with or without posterior soft tissue repair.

Aged↗
PubMed1990

Energy cost of walking with hip joint impairment.

The energy cost of walking was measured in 12 patients (age 39-73 years) with hip joint impairment and 10 healthy controls during unassisted walking (2-6 km.h-1) on a level treadmill surface and on a 5% incline. The energy cost of locomotion in most patients increased up to 50% and 70% during level-surface and uphill walking, respectively. This difference between patients and controls was probably due to the increased external mechanical work. The energy cost of walking, although related to pain experienced during walking but not to hip joint range of motion or to joint status evaluated radiographically, provides an additional variable when defining the conditions of disability and functional impairment in individuals with this pathological condition. [Gussoni M, Margonato V, Ventura R, et al: Energy cost of walking with hip joint impairment.

Adult↗
PubMed1996

[The anatomicofunctional characteristics of the hip joint].

32 femurs and 23 cotyloid cavities of people who died in accidents and also 29 locked hip joints of just-received cadavers of patients died from somatic diseases were studied by macroscopic methods. The results confirmed that femur head is being nourished from the obturator artery basin. Shape and other parameters of ligament of the costal head so as its possible absence in the hip joint were found to result from interrelations between cotyloid cavity and head of the femur. Ligament of the costal head is maximally strained in extreme femur adduction and in all other positions it is more or less relaxed. This indicates the lack of essential mechanical role of ligament of costal head in hip joint biomechanics. The data obtained substantiate the possibility of using the ligament as a nutritive vascular peduncle of an osteochondral autograft, excised from lower internal region of femur head.

Adult↗
PubMed2003

Static and dynamic evaluation of the influence of supplementary hip-joint stiffness on crutch-supported paraplegic stance.

Paraplegic persons can stand with hip-knee-ankle-foot orthoses (HKAFO) and crutches. However, current HKAFOs restrict body movement extensively, which may impede functional upper-body movements. A more compliant body support using a more compliant orthosis or well-controlled functional electrical stimulation system may increase freedom of movement to the user, but should not impede stability and required arm support. In the current study, we investigated the consequences of varying stiffness applied at the hip to postural stability and required crutch force during paraplegic stance. Experiments were performed on five paraplegic persons with spinal cord lesions varying from T1 to T12. Static postures and dynamic responses to perturbations were tested for varying hip stiffness and crutch placements. The minimal hip-joint stiffness for stable stance appeared to depend on lesion level. In contrast to the predictions of a previous modeling study, no statistically significant influences of hip-joint stiffness or crutch-to-foot distance on posture and applied crutch forces were found. It is hypothesized that the main reasons of this discrepancy are the active upper-body efforts the paraplegic HKAFO users are still able to exert and the remaining flexibility of the upper trunk and shoulder region, which is present despite the restrictions of the orthosis.

Computer Simulation↗
PubMed1997

Frictional heating of bearing materials tested in a hip joint wear simulator.

In a hip simulator wear test using bovine serum as a lubricant, the heat generated by ball-cup friction may cause precipitation of the proteins from the lubricant. The resultant accumulation of a solid layer of precipitated protein between the ball and cup could artificially protect the bearing surfaces from wear, in a manner that does not occur in vivo. Alternatively, the gradual depletion of the soluble proteins could interfere with their ability to act as boundary lubricants on the bearing surfaces, thereby artificially increasing the wear rate. Because the rate of protein precipitation may depend on the maximum temperature at the bearing surfaces during sliding, rather than the mean temperature of the bulk lubricant, this study determined the transient surface temperatures using an array of thermocouples embedded in acetabular cups of GUR 415 ultra-high molecular weight polyethylene (UHMWPE) and femoral balls of metal or ceramic, in conjunction with a finite element model of the temperature distribution. The prostheses were tested at one cycle/s under a Paul-type, physiological load profile with 2030 N maximum force, with the load cycle synchronized to the motion cycle. The steady state temperatures of the bulk lubricant were 38 degrees C for the zirconia balls, 36 degrees C for the cobalt-chromium and 33 degrees C for the alumina. However, the corresponding surface temperatures of the polyethylene, calculated with the finite element model, were 99 degrees C with zirconia ceramic, 60 degrees C with cobalt-chromium alloy, and 45 degrees C with alumina ceramic. The rank order of the surface temperatures corresponded to the relative amounts of protein that were precipitated in the test chambers during wear tests with these materials.

Animals↗
PubMed1988

Synovial chondromatosis of the hip joint.

Synovial chondromatosis of the hip joint is uncommon entity. Two cases are presented, and the spectrum of the disease is discussed. Partial synovectomy with loose body removal is recommended as the treatment of choice. Joint replacement is performed only in patients with severe secondary osteoarthritis, and used only in selected cases.

Adult↗
PubMed2004

Osteoarthritis of the hip joint and farm work.

BACKGROUND: Different types of farming and farm work were studied in relation to the occurrence of osteoarthritis of the hip joint in a cohort of farmers. METHODS: A group of 427 farmers with hip joint osteoarthritis were identified together with a matched control group of farmers without hip or knee problems. All were invited to an interview and physical examination. After a dropout of 10%, and removing those who had had predisposing diseases or trauma, the observations for 369 pairs were available for analyses. RESULTS: Farmers with larger dairy and swine confinement operations (sows) had an increased risk of acquiring osteoarthritis of the hip. In a logistic regression multivariate model, those who milked more than 40 cows daily had an increase in risk (OR = 4.5, 95% CI 1.9-11.0) in relation to those who did not work in dairy production. Those who had worked more than 5 hr daily in animal barns over a long period of time also had an increase in risk (OR = 13.3, 95% CI 1.2-145.0) in relation to those who did not work with animals. In another model, those who had large farm areas (>100 ha) had a significantly decreased risk (OR = 0.14, 95% CI 0.05-0.43) in relation to those who had smaller farm areas. CONCLUSIONS: Farmers operating farms with large plant production area and few animal contacts had a significantly lower risk of incurring osteoarthritis of the hip than did farmers in general. The presence of animal production showed a significant positive relationship to the risk of developing hip joint osteoarthritis. Am. J. Ind. Med. 45:202-209, 2004.

Adult↗
PubMed1990

Hip joint ultrasonography: correlation with intra-articular effusion and synovitis.

The ultrasonographic distance between the collum of the femur and the capsule of the hip joint was measured in 88 hips of 75 patients with chronic inflammatory joint disease and with hip joint symptoms or signs. In addition, 10 other hips were measured before soft tissue operation of the hip joint. The ultrasonographic distance was 7 mm or more in 29 out of 33 hips with synovial fluid in joint puncture and in seven out of nine hips with intra-articular effusion or synovitis in open surgery. Intra-articular injection of corticosteroid resulted in a significant decrease in the enlarged ultrasonographic distance, in joints both with and without synovial fluid. Joints not treated with steroid did not show any change. It is concluded that both joint effusion and synovitis without effusion can increase the anechogenic distance between the bone and the joint capsule.

Adolescent↗
PubMedDate not supplied

[The role of the alloy-specific elements iron, cobalt, chromium and nickel in aseptic loosening of total hip joint prosthesis].

The cause of aseptic loosening of total hip joint prostheses is still largely unexplained. In addition to mechanical forces, material factors may also be instrumental. In 16 patients with loosened hip prostheses who underwent re-operation (8 X Huggler-Weber, 8 X McKee-Farrar), the concentration of the alloy-specific elements cobalt, chromium, nickel and iron were determined in 58 tissue samples by means of neutron activation and emission spectrum analysis. An increase in the element concentrations was found in all the tissue samples, and this was unrelated to the time elapsed since implantation. The chromium concentration in particular was significantly elevated in all the tissue samples, in some patients with McKee-Farrar prostheses up to 10,000 times the norm. In view of the known toxicity of cobalt, chromium and nickel in high doses it seems that the presence of unphysiologically high concentrations of these elements in the vicinity of total hip joint prostheses represents an explanation of some of the loosened prostheses.

Chromium Alloys↗
PubMed2006

Propagation of the hip joint centre location error to the estimate of femur vs pelvis orientation using a constrained or an unconstrained approach.

To estimate hip joint angles during selected motor tasks using stereophotogrammetric data, it is necessary to determine the hip joint centre position. The question is whether the errors affecting that determination propagate less to the angles estimates when a three degrees of freedom (DOFs) constraint (spherical hinge) is used between femur and pelvis, rather than when the two bones are assumed to be unconstrained (six DOFs). An analytical relationship between the hip joint centre location error and the joint angle error was obtained limited to the planar case. In the 3-D case, a similar relationship was obtained using a simulation approach based on experimental data. The joint angle patterns resulted in a larger distortion using a constrained approach, especially when wider rotations occur. The range of motion of the hip flexion-extension, obtained simulating different location errors and without taking into account soft tissue artefacts, varied approximately 7 deg using a constrained approach and up to 1 deg when calculated with an unconstrained approach. Thus, the unconstrained approach should be preferred even though its estimated three linear DOFs most unlikely carry meaningful information.

Artifacts↗
PubMed2006

[Hip joint development after closed reduction, complicated by growth disturbance of the capital femoral epiphysis].

The purpose of the study was to assess hip joint development after the treatment of DDH with overhead traction and closed reduction complicated by growth disturbances of the proximal femoral epiphysis. Comparison was also made between joints affected by AVN and other treated joints. Antero-posterior radiographs of 107 hip joints (81 children) done during treatment and follow-up were retrospectively reviewed. The average age was 14.2 months (from 5 to 33 months) and age at the final follow up 20.7 years (minimum 14 years). AVN was detected in 31 (29%) of the hip joints. Type II necrosis according to Bucholz and Ogden classification system was the most common one. In the hips affected by growth disturbances of proximal femoral epiphysis there were worse final clinical and radiological results, osteoarthrosis and elongation of acetabulum were more often seen in comparison to other treated joints. There was no difference in terms of other parameters describing acetabulum. In 19 out of 31 cases deformity of femoral head was noted. AVN may present as a wide spectrum of pathology from mild, probably not significant growth disturbances of physis to severe deformity and lateralisation of femoral head. Statistically hips with AVN had worse final results and in cases with good congruity prognosis is often uncertain due to aspherical femoral head and secondary osteoarthrosis. Acetabular development is most often unaffected by AVN.

Adolescent↗
PubMed1995

Osteoarthritis of the hip joint and acetabular dysplasia in women.

OBJECTIVE: To investigate the suggestion that osteoarthritis (OA) of the hip joint is often caused by subclinical acetabular dysplasia among elderly British women. METHODS: We examined 393 hip joints from the radiographs of a sample of women aged 60-75 years undergoing intravenous urography. Acetabular dysplasia was assessed using measurements of the centre-edge (CE) angle and acetabular depth (AD), which are both reduced in this condition. OA was assessed using an overall grade based on the Kellgren and Lawrence system and by measurement of minimum joint space (MJS). RESULTS: MJS was the more repeatable measure of OA, and showed a strong correlation with overall grade (Spearman rank correlation coefficient rs = -0.61, p < 0.01). MJS was significantly negatively correlated with CE angle (Pearson correlation coefficient r = -0.25, p < 0.001) and AD (r = -0.11, p < 0.05). Consistent with these findings, there was a weak but significant positive correlation between overall grade of OA and one of the two measures (CE angle) of acetabular dysplasia. CONCLUSIONS: These results do not support the hypothesis that mild degrees of acetabular dysplasia account for a substantial proportion of hip OA in elderly women. Changes in hip joint geometry as a result of OA may be responsible for the weak negative association observed.

Aged↗
PubMed1985

Labial adhesions in postmenopausal women with hip joint disease.

Two cases of postmenopausal labial adhesions in patients with severe hip joint disease are presented. The aetiology of labial adhesions in the postmenopausal woman is discussed. Hip joint disease is shown to influence the formation of adhesions by interfering with perineal hygiene and decreasing sexual activity.

Aged↗
PubMed1989

[99mTc-fosfon distribution in the hip joints and femoral arteries in femur head osteochondropathy in children].

A study was made of 99mTc-fosfon distribution in the hip joint of children in health and Perthes' disease. The drug distribution asymmetry in the hip joints did not exceed +/- 10%. The 1st stage of disease was characterized by the absence of x-ray signs of head necrosis, a decrease in drug accumulation at the upper pole of the head up to 90% and less. The susceptibility of the test was 0.95, specificity--1, accuracy--0.97. A low level of drug accumulation at the upper pole of the head was retained at the 2nd and 3rd stages. At the 4th stage drug accumulation was increased. Changes in the relative level of drug accumulation at the upper pole of the head were correlated with changes in the indices characterizing the first passage of the drug in the femoral artery of the affected limb: a decrease in the volumetric blood flow at the 1st stage and its regeneration to values of the blood flow in the lateral artery at the 4th stage. The susceptibility of the test was 0.95, but its specificity and accuracy were lower. The combination of gamma topography of the hip joints with gamma chronometry of the first passage of the drug in the femoral arteries using the quantitative criteria of distribution asymmetry expanded and improved the potentialities of radionuclide diagnosis of Perthes' disease.

Child↗
PubMed2001

Wear of HIPed and non-HIPed alumina-alumina hip joints under standard and severe simulator testing conditions.

Wear and the biological response to wear debris of artificial joints remain major concerns in total hip arthroplasty (THA). The long-term effects of UHMWPE wear debris are well documented and these have led to interest in alternate bearing materials for THA. Alumina ceramic-ceramic hip joints have been successfully used for more than 30 years with low wear and little incidence of osteolysis. The most common wear pattern observed on retrieved components is an elliptical wear 'stripe' on the heads and a corresponding worn area on the cup with an approximated wear rate of 1-5 mm3 pa. More severe wear has also occasionally occurred, usually in association with an abnormal clinical history. Modern alumina-alumina THAs use an improved HIPed (hot isostatically pressed) alumina ceramic-bearing material which may be more resistant to severe wear. Previous in vitro simulator studies have not replicated in vivo wear rates or mechanisms. The aim of this study was to compare previous generation non-HIPed alumina and modern HIPed alumina in a hip joint simulator under 'normal' and 'harsh' testing conditions. HIPed alumina was found to have a lower wear rate than non-HIPed alumina, although the difference was not statistically significant at the 95% confidence level. Testing in Gelofusine and water lubricants did not elevate the wear rates of either material. Elevated swing phase load testing also had no significant effect on the wear rates of either material. Testing in the absence of any lubricant produced very severe wear of the non-HIPed material in one specimen only.

Aluminum Oxide↗
PubMed2002

Orthopedic devices: reclassification of the hip joint metal/polymer constrained cemented or uncemented prosthesis. Final Rule.

The Food and Drug Administration (FDA) is reclassifying the hip joint metal/polymer constrained cemented or uncemented prosthesis intended to replace a hip joint from class III (premarket approval) to class II (special controls). FDA is also [[Page 21172]] identifying the guidance document entitled "Class II Special Controls Guidance Document: Hip Joint Metal/Polymer Constrained Cemented or Uncemented Prosthesis" as the special control that the agency believes will reasonably ensure the safety and effectiveness of the device. This reclassification is being undertaken based on new information regarding the device contained in a reclassification petition submitted by the Orthopedic Surgical Manufacturers Association (OSMA), under the Federal Food, Drug, and Cosmetic Act (the act), as amended by the Medical Device Amendments of 1976 (the 1976 Amendments), the Safe Medical Devices Act of 1990 (SMDA), and the Food and Drug Administration Moderization Act of 1997 (FDAMA). FDA is also revising the device identification to accurately describe the device.

Device Approval↗
PubMed1979

Hip joint instability after the neonatal period. II. The acetabular growth potential.

In 26 girls with idiopathic hip joint instability, diagnosed after the neonatal period, the acetabular angle is measured before and after treatment. A mathematical analysis of the acetabular growth potential in these hip joints and normal ones is presented. During treatment the monthly reduction of the acetabular angle is greater than in normal hip joints. The age limit for sole treatment in immobilisation without operative procedures is discussed.

Acetabulum↗