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PubMed2000

Occupational lifting is associated with hip osteoarthritis: a Japanese case-control study.

OBJECTIVE: Hip osteoarthritis (OA) is a frequent cause of pain and disability in Western countries, but the disorder is less common in Japan. A case-control study in Britain found obesity, hip injury, and occupational lifting to be associated with hip OA among men and women. However, there are few epidemiological studies concerning factors associated with hip OA in Japan. We performed a comparable case-control study of the disorder in Japan, and contrasted the findings with those from Britain. METHODS: The study was carried out in 2 health districts in Wakayama Prefecture, Japan. Cases were men and women aged > or = 45 years listed for total hip arthroplasty due to OA over one year, and who did not have an established cause of secondary OA (e.g., rheumatoid arthritis, ankylosing spondylitis). For each case, a control was selected randomly from the general population and was individually matched to the case for age, sex, and district of residence. Cases and controls were interviewed with a structured questionnaire about medical history, physical activity, socioeconomic factors, and occupation. Measurements were made of height and weight. RESULTS: One hundred fourteen cases (103 women, 11 men) were compared with 114 controls. We found no relationship between obesity and hip OA (OR = 1.0, 95% CI 0.5-1.9; highest vs lowest thirds of distribution of body mass index). There was, however, a statistically significant association between occupational lifting and hip OA, such that regular lifting of 25 kg in the individual's first job (OR = 3.6, 95% CI 1.3-9.7) or of 50 kg in their main job (OR = 4.0, 95% CI 1.1-14.2) was associated with increased risk of hip OA. These associations remained after adjustment for potential confounding variables. In contrast, those subjects who spent > 2 h each day sitting during their first job were significantly less likely to have the disorder (crude OR = 0.5, 95% CI 0.3-0.9). This association also remained statistically significant after adjustment for potential risk factors. CONCLUSION: Our findings support the hypothesis that occupational physical activity, particularly the lifting of very heavy loads in the workplace at regular intervals, predisposes to hip OA in both Britain and Japan. The lack of association between obesity or hand involvement and hip OA in Japan suggests that the contribution of constitutional and mechanical risk factors to this disorder might differ in different populations. However, attention to manual handling in the workplace would appear an important aspect of preventive strategies against hip OA in Western and Oriental populations.

Aged↗
PubMed2002

Standardized outcome evaluation after blunt multiple injuries by scoring systems: a clinical follow-up investigation 2 years after injury.

OBJECTIVE: The objective of this study was to evaluate the state of rehabilitation in patients with blunt multiple injuries 2 years after their initial injuries, using several standardized scales and a recently described comprehensive scoring system, by means of a prospective clinical multicenter study. METHODS: Two years after the initial injury, patients with blunt multiple injuries (Injury Severity Score > or = 16) underwent a clinical follow-up in 5 German Level I trauma centers. The reassessment included a complete head-to-toe examination of the musculoskeletal system and a neurologic examination. The following patient-assessed health status scores were used to determine the quality of life: Short-Form 12, Functional Independence Measurement, and Musculoskeletal Function Assessment. Moreover, a comprehensive scoring system developed in our department (Hannover Score for Polytrauma Outcome [HASPOC]) was used that includes provider-report (physician's examination) and self-report (score systems) criteria. RESULTS: Two hundred fifty-four of 312 patients who had been injured between January 1995 and July 1996 were reexamined between January 1, 1997, and July 1, 1998. Among the remaining 58 patients, 9 had died by the time of follow-up, and 49 patients had not accepted the invitation. The mean age of those patients who underwent reexamination was 36 +/- 13 years, the mean Injury Severity Score was 24 +/- 6, and the mean initial Glasgow Coma Scale score was 11 +/- 4 (Abbreviated Injury Scale (AIS) head score of 3.3 +/- 1.1; AIS face, 1.4 +/- 0.1; AIS chest, 3.0 +/- 0.8; AIS abdomen, 1.7 +/- 0.6; and AIS extremities, 3.4 +/- 0.8). The general outcome (Short-Form 12) was as follows: grade I, 9%; grade II, 25%; grade III, 29%; grade IV, 25%; grade V, 6%; and grade VI, 6%. The outcome of the injured extremity demonstrated moderate or severe restrictions according to the Musculoskeletal Function Assessment in 41% of injuries of the lower extremity and in 16% of injuries of the upper extremity. Among patients with injuries to the lower extremity, 52% experienced pain or impaired ability to walk related to an injury of the foot or ankle, 31% indicated pain after a knee or thigh injury, and 27% indicated pain after a femoral or hip injury. The most severe deficits in the range of motion occurred in the foot and the ankle region (13.4% deficit of range of motion < 20% of normal range, p < 0.05 to other injuries). The results of the outcome obtained by self-report correlated with the clinical examination when a scoring system was used that was described recently, the HASPOC. CONCLUSION: In a standardized multicenter reexamination of patients with blunt multiple injuries, the general outcome was usually fair or good. Both the complaints and the objective results of specific extremity areas demonstrated that most limitations were because of injuries below the knee. These results were adequately reflected by a comprehensive scoring system, combining self-report and provider report (HASPOC).

Adult↗
PubMed1981

Simultaneous bilateral central dislocation of the hip--an unusual complication of eclampsia.

Bilateral hip injuries are rare. A case of bilateral central dislocation of the hip caused by eclamptic convulsions is reported because of its rarity. Further, eclampsia as a cause of bilateral central dislocation has not been reported earlier. All the earlier 11 cases were due to therapeutic convulsions before 1960. The patient reported here was ambulatory 6 months after injury, with some restriction of rotation and abduction.

Adult↗
PubMed1994

A quantitative method for cost reimbursement and length of stay quality assurance in multiple trauma patients.

OBJECTIVE: To develop a statistically valid method for trauma reimbursement and quality assurance (QA) length-of-stay filters. This is needed because diagnosis related group (DRG)-based trauma payment systems assume a random sampling of injury severities from a normally distributed population and thus result in economic disincentives to level I trauma centers. METHODS: 142 trauma patients with MVC blunt multisystem injuries (MSI) (ISS > or = 16) were studied concurrently during their hospital course. SETTING: Level I regional trauma center. OUTCOME MEASURES: Outcome measures were (dependent variables) length of stay (LOS) and state-approved hospital charges (COST). RESULTS: Mean acute care COST was $74,310, but the distribution of COST was log normal, rather than Gaussian normal as assumed by DRGs. The LOS for MSI was more than twice the average for all trauma (22 vs. 9 days), reflecting skewed severities of level I patients and was related to COST (r2 = 0.802; p < 0.0001). The ISS alone was a weak determinant of COST or LOS (r2 = 0.05; p < 0.0001). The best single determinant of COST and LOS was survival (r2 = 0.15; p < 0.0001): as it increased, it increased LOS. The most costly injuries (all p < 0.0001) involved the lower extremity (LE) or hip joint (HIP), whereas sepsis and pulmonary and surgical complications constituted the most costly complications (all p < 0.0001). Regression models that accounted for the log-normal distribution of the dependent variable and based on binary variables for survival, LE and HIP injuries, and the complications of sepsis, ARDS, pulmonary failure, MOFS, plus ISS, explained nearly two thirds of the variability in COST (r2 = 0.621; p < 0.0001) or LOS (r2 = 0.687; p < 0.0001) and the residuals were normally distributed. CONCLUSIONS: These models provide a valid method of reimbursement for MSI trauma for level I trauma centers, since the data imply that good care associated with survival from specific complications of MSI are the major determinants of COST, rather than the specific type of injury or the resultant ISS. Moreover, using survival and ISS plus the disease-related complications as determinants of LOS, this method can be applied to any U.S. region since local factors can be used to adjust hospital COST as a highly correlated function of LOS. This method also permits identification of LOS outliers for QA, taking into account the influence of injury complications.

Accidents, Traffic↗
PubMed1998

Irreducible fracture-dislocation of the hip: a severe injury with a poor prognosis.

OBJECTIVE: To determine the outcome of and prognostic factors associated with irreducible fracture-dislocations of the hip. DESIGN: Retrospective review of a prospectively gathered trauma database. METHODS: Using a prospectively gathered trauma database, we identified twenty-five patients with fracture-dislocations of the hip that were irreducible with closed means under a general anaesthetic. All were victims of high-energy trauma with severe injuries (mean Injury Severity Score = 25, range 9 to 54). Eighteen patients had multiple fractures, fifteen had associated systemic injury, and only four sustained the hip injury in an isolated fashion. There were seven associated sciatic nerve injuries (28 percent) and nine associated femoral head or neck fractures (36 percent). The mean time from injury to open reduction was 15.3 hours (range 3 to 58 hours). RESULTS: Twenty-three patients (92 percent) were followed to definitive outcome. Despite accurate reduction, only six patients had satisfactory results (Thompson-Epstein = good or excellent). Poor results were associated with delay in reduction and an associated femoral head or neck fracture. Reasons for the poor results include avascular necrosis, posttraumatic arthritis or chondrolysis, persisting sciatic nerve injury, and heterotopic ossification. CONCLUSIONS: An irreducible fracture-dislocation of the hip is a severe injury with a poor prognosis and a high incidence of associated injuries. Outcome is best in patients who do not have an associated femoral head or neck fracture and those whose dislocation is promptly reduced.

Adolescent↗
PubMed1998

Hormone replacement therapy, other reproductive variables and symptomatic hip osteoarthritis in elderly white women: a case-control study.

BACKGROUND: Recent epidemiological studies suggest that post-menopausal hormone replacement therapy might reduce the risk of hip osteoarthritis (OA) in women. However, the association of the disorder with other reproductive variables is controversial. We addressed this issue in a population-based case control study among 413 female cases and 413 age- and sex-matched controls. METHODS: A total of 413 women listed for hip replacement because of primary OA over an 18 month period were compared with an equal number of controls selected from the general population and individually matched for age and general practice. Information about reproductive variables was obtained by questionnaire administered at interview. RESULTS: The risk of hip OA was significantly elevated among women who had had an oophorectomy (OR = 1.9, 95% CI 1.0-3.7). After adjustment for body mass index, the presence of Heberden's nodes, previous hip injury and past leisure sporting activity (all independent risk factors for hip OA), and for other reproductive variables, there was a non-significant, protective effect of long-term hormone replacement therapy, such that > or =5 yr of use was associated with a 40% reduction in risk (OR = 0.6, 95% CI 0.2-1.8). Paradoxically, short-term HRT use (up to 5 yr duration) was associated with an excess risk of hip OA (OR = 1.7, 95% CI 0.9-3.3). There was no association between the risk of hip OA and use of oral contraceptives, parity or hysterectomy. CONCLUSIONS: These data are consistent with previous studies suggesting a protective effect of long-term hormone replacement therapy on the risk of hip OA. By contrast, an elevation of risk in short-term users was demonstrated. Our results also suggest that risk is increased among women who have undergone unilateral or bilateral oophorectomy. Studies are required to investigate the mechanisms underlying these associations.

Aged↗
PubMed2006

Rehabilitation following hip arthroscopy.

The management of hip injuries has evolved significantly in recent years with the advancement of arthroscopic techniques. These recent surgical advances require establishment of rehabilitation protocols that follow several basic principles including (1) consideration of soft-tissue healing constraints, (2) control of swelling and pain to limit muscular inhibition and atrophy, (3) early range of motion, (4) limitations of weight bearing, (5) early initiation of muscle activity and neuromuscular control, (6) progressive lower extremity strengthening and proprioceptive retraining, (7) cardiovascular training, and (8) sport-specific training. The following protocols should not be considered a cookbook approach to rehabilitation, rather guidelines that are used to achieve consistent outcomes. These guidelines will continue to evolve as we learn more about the hip joint and surrounding musculature.

Arthroscopy↗
PubMed1995

The role of hip arthroscopy in the diagnosis and treatment of hip disease.

Injuries to the hip are commonly encountered by orthopedic surgeons and will, for the most part, respond well to conservative therapy. When a patient's hip pain has not responded to the appropriate treatment and radiographic measurements have not shown any specific pathology, arthroscopy of the hip can be a valuable diagnostic and therapeutic procedure. We retrospectively reviewed 94 consecutive patients who experienced refractory hip pain that persisted longer than 6 months (average: 2.1 years) and who had an average follow up of 2.5 years. Statistical analysis was performed using Fisher's Exact Test (P value) and Pearson (r value) correlation coefficient to compare preoperative symptomatology and physical examination findings with intraoperative pathology. Statistically significant results were obtained when comparing preoperative symptoms of a painful hip click and mechanical symptoms of locking with acetabular labral injuries (P = .000, r = .896) and loose bodies (P = .000, r = .896), respectively. Radiologic studies were nondiagnostic in 76% of patients in this series. Hip arthroscopy can be a valuable and viable procedure in the diagnosis and treatment of protracted or progressive hip pain lasting more than 6 months.

Adult↗
PubMedDate not supplied

Retrograde versus antegrade nailing of femoral shaft fractures.

OBJECTIVES: To compare union rates and complications of retrograde intramedullary nailing of femoral shaft fractures with those of antegrade intramedullary nailing. DESIGN: Retrospective. SETTING: Level I trauma center. PATIENTS: Two hundred eighty-three consecutive adult patients with 293 fractures of the femoral shaft who underwent stabilization with antegrade or retrograde inserted femoral nails were studied. There were 140 retrograde nails and 153 antegrade nails. Twelve fractures in twelve patients were excluded (three in patients who died early in the postoperative period, three in patients because of early amputation, four in patients who were paraplegic, and two in patients who fractured through abnormal bone owing to metastatic carcinoma), leaving 134 fractures treated with retrograde nails and 147 treated with antegrade nails. One hundred four femurs treated with retrograde nails (Group R) and ninety-four femurs treated with antegrade nails (Group A) had sufficient follow-up and served as the two study groups. The average clinical follow-up was twenty-three months (range 6 to 66 months) for Group R and twenty-three months (range 5 to 64 months) for Group A. Both groups were comparable with regard to age, gender, number of open fractures, degree of comminution, mode of interlocking (i.e., static or dynamic), and nail diameter (p > 0.05). INTERVENTION: Retrograde intramedullary nails were inserted through the intercondylar notch of the knee, and antegrade nails were inserted through the pirformis fossa using standard techniques. MAIN OUTCOME MEASURES: Union, delayed union, nonunion, malunion, and complication rates. RESULTS: After the index procedure there were no significant differences in healing or incidence of malunion between Group R and Group A (p > 0.05). Healing after the index procedure occurred in ninety-one (88 percent) of the femurs in Group R and in eighty-four (89 percent) of the femurs in Group A. In Group R, there were seven delayed unions (7 percent) and six nonunions (6 percent). In Group A, there were four delayed unions (4 percent) and six nonunions (6 percent). Healing ultimately occurred in 100 (96 percent) femurs from Group R and in ninety-three (99 percent) femurs from Group A. In Group R, there were eleven malunions (11 percent), and in Group A, there were twelve malunions (13 percent). When patients with ipsilateral knee injuries were excluded, the incidence of knee pain was significantly greater for Group R patients (36 percent) than for Group A patients (9 percent) (p < 0.001). When patients with ipsilateral hip injuries were excluded, the incidence of hip pain was significantly greater for Group A patients (10 percent) than for Group R patients (4 percent) (p < 0.05). CONCLUSIONS: Retrograde and antegrade nailing techniques provided similar results in union and malunion rates. There were more complications related to the knee after retrograde nailing and more complications related to the hip after antegrade nailing.

Adolescent↗
PubMed1999

MR imaging of sports injuries of the hip.

While MR imaging studies of the hip have been directed routinely toward the diagnosis of atraumatic osteonecrosis (ON), interest has increased in the use of MR imaging to diagnose other disorders of the hip and surrounding soft tissues, especially in athletic injuries. In addition to reviewing MR imaging technical considerations and image appearance, this article discusses applications of MR imaging to diagnosing pelvic and hip fractures, muscle contusion and strain, tendon injuries, acetabular labral tears, bursitis, and osteitis pubis and chronic symphyseal injury.

Athletic Injuries↗
PubMed1996

A new pelvic tilt detection device: roentgenographic validation and application to assessment of hip motion in professional ice hockey players.

Professional ice hockey players often sustain hip and low back strains. We hypothesized that playing the sport of ice hockey may result in the shortening of the iliopsoas muscles, increasing the likelihood of lumbosacral strains and hip injuries. The purpose of this study was to identify whether ice hockey players demonstrate a decrease in hip extension range of motion when compared with age-matched controls. Objective data were obtained using the Thomas test with an electrical circuit device to determine pelvic tilt motion. The device was validated by obtaining X-rays in six subjects during the Thomas test. The study then examined 25 professional hockey players and 25 age-matched controls. A two-way analysis of variance was applied for statistical analysis to examine the effect of sport and side. The results demonstrated that ice hockey players have a reduced mean hip extension range of motion (p < .0001) by comparison with age-match controls. There was no difference between right and left sides, nor was there any interaction of the sport with the side of the body. Therefore, hockey players demonstrated a decreased extensibility of the iliopsoas muscles. Future research may be directed toward establishing a link between prophylactic stretching and injury rate in professional ice hockey players.

Age Factors↗
PubMed2003

Effects of hip posture on the frontal impact tolerance of the human hip joint.

The pattern of left- and right-side hip injuries to front-seat occupants involved in offset and angled frontal crashes suggests that hip posture (i.e., the orientation of the femur relative to the pelvis) affects the fracture/dislocation tolerance of the hip joint to forces transmitted along the femur during knee-to-knee-bolster loading in frontal impacts. To investigate this hypothesis, dynamic hip tolerance tests were conducted on the left and right hips of 22 unembalmed cadavers. In these tests, the knee was dynamically loaded in the direction of the long axis of the femur and the pelvis was fixed to minimize inertial effects. Thirty-five successful hip tolerance tests were conducted. Twenty-five of these tests were performed with the hip oriented in a typical posture for a seated driver, or neutral posture, to provide a baseline measure of hip tolerance. The effects of hip posture on hip tolerance were quantified using a paired-comparison experimental design. In six pairs of tests, one side of each cadaver was tested with the hip joint oriented in the neutral posture and the contralateral hip from the same cadaver was tested with the hip joint adducted 10 degrees from the neutral posture. In four pairs of tests, the hip was tested in neutral and 30 degrees flexed postures. The average fracture tolerance of the hip in the neutral posture was 6.1-/+1.5 kN. Hip tolerance decreased by an average of 34-/+4% with 30 degrees of flexion from the neutral posture (p<0.0001) and by 18-/+8% with 10 degrees of adduction from the neutral posture (p=0.008).

Journal Article↗
PubMed2003

Posterior urethral injuries and the Mitrofanoff principle in children.

OBJECTIVE: To report our experience of children with trauma causing posterior urethral injury who at some stage underwent a Mitrofanoff intervention, as post-traumatic urethral injuries can demand long-term treatment which (regardless of the surgical intervention) requires a period of dilatation of the reconstructed urethra. PATIENTS AND METHODS: From 1992 to 2001, 14 patients with urethral injuries underwent a Mitrofanoff procedure. Thirteen had been run over by a motor vehicle and had severe hip injuries, and one had a direct non-penetrating perineal impact lesion (13 boys and one girl, aged 2-13 years at the time of the accident). In all cases the Mitrofanoff procedure involved interposing the appendix between the bladder and the umbilicus. Only one of the children (because of extremely high bladder filling pressures) also underwent an augmentation cystoplasty and closure of the bladder neck because there were bony fragments in the urethra. RESULTS: The Mitrofanoff technique was considered useful in most cases. All patients during a given period used the Mitrofanoff conduit to empty their bladder every 3 h; 10 of the 14 are currently voiding urethrally, with an adequate flow, and four are not, but emptying the bladder periodically via the appendicovesicostomy. The only girl in the group has a major hip deformity and is unlikely to undergo urethroplasty; two patients are expecting definitive treatment and the other, although having a patent urethra, has no urinary flow. He is currently 19 years old and has no erections. CONCLUSIONS: The treatment of posterior urethral injuries represents a challenge to surgical teams. Although primary suturing of the separated urethral ends is accepted as the best treatment, the construction of a temporary continent urinary diversion may be considered in the most severe cases.

Accidents, Traffic↗
PubMed1992

Concomitant injuries of the hip joint and abdomen resulting from gunshot wounds.

Septic arthritis is a devastating complication of transabdominal gunshot wounds to the hip. Five patients sustained gunshot wounds to the hip which violated the alimentary tract. Diagnosis was established with plain radiographs in three patients, arthrogram in one patient, and a gastrointestinal series in one patient. Three patients had an exploratory laparotomy with diverting colostomy followed by immediate hip arthrotomy within 24 hours and no joint infections occurred. In the other two patients, hip involvement was identified late after septic arthritis occurred. Early diagnosis, diverting colostomy, and immediate arthrotomy are recommended for gunshot wounds to the hip which involve the alimentary tract.

Abdominal Injuries↗
PubMed1983

Nerve injury in total hip arthroplasty.

The causative factors and the clinical course of symptoms related to nerve injury in total hip arthroplasty were evaluated in 34 patients who underwent surgery during the period from 1969 to 1981. The overall incidence of this complication was 0.6%, with an incidence of 1.0% during the first seven years and of 0.3% during the following six years of the study. Female patients, particularly those with congenital hip dislocation, appeared to be at higher risk of sustaining nerve injury. Pathogenetic mechanisms of nerve injury identified in 47% of the patients included lengthening and/or lateral displacement of the proximal femur, subfascial hematoma formation, prosthetic dislocation, and partial nerve transection. Greater blood loss and longer surgical times were distinguishing features of the nerve injury group as compared with large series of total hip arthroplasties performed during similar periods by the same surgical approaches. Causalgic pain was a significant sequela of nerve injury, and its strong association with bleeding problems was observed. With the exception of causalgic pain, persistent neurologic dysfunction in 79% of these patients at an average of 3.7 years after operation did not cause significant disability.

Adult↗
PubMed1987

Obturator hip dislocation with ipsilateral fractures of the femoral head and femoral neck. A case report.

A 28-year-old female pedestrians, struck by an automobile, sustained an obturator hip dislocation with concomitant ipsilateral fractures of both the femoral head and femoral neck. This unusual hip injury seems not to have been previously reported. The femoral neck fracture was widely separated from the shaft, and unfortunately, a 6-mm deep indentation fracture involved the anterosuperior portion of the articulating surface of the femoral head. This complex injury was treated with a press-fit bipolar prosthesis.

Adult↗
PubMed2004

Arthroscopic intervention in early hip disease.

Advancement in diagnostic and therapeutic applications for hip arthroscopy have dispelled previous myths about early hip disease. Arthroscopic findings have established the following facts: Acetabular labral tears do occur; acetabular chondral lesions do exist; tears are most frequently anterior and often associated with sudden twisting or pivoting motions; and labral tears often occur in association with articular cartilage lesions of the adjacent acetabulum or femoral head, and if present for years, contribute to the progression of delamination process of the chondral cartilage. Magnetic resonance arthrography represents an improvement over conventional magnetic resonance imaging, it does have limitations when compared with direct observation. Although indications for hip arthroscopy are constantly expanding, the most common indications include: labral tears, loose bodies, chondral flap lesions of the acetabular or femoral head, synovial chondromatosis, foreign body removal, and crystalline hip arthropathy (gout, pseudogout, and others). Contraindications include conditions that limit the potential for hip distraction such as joint ankylosis, dense heterotopic bone formation, considerable protrusio, or morbid obesity. Complication rates have been reported between 0.5 and 5%, most often related to distraction and include sciatic or femoral nerve palsy, avascular necrosis, and compartment syndrome. Transient peroneal or pudendal nerve effects and chondral scuffing have been associated with difficult or prolonged distraction. Meticulous consideration to patient positioning, distraction time and portal placement are essential. Judicious patient selection and diagnostic expertise are critical to successful outcomes. Candidates for hip arthroscopy should include only those patients with mechanical symptoms (catching, locking, or buckling) that have failed to respond to conservative therapy. The extent of articular cartilage involvement has the most direct relationship to surgical outcomes. Improvements in technique and instrumentation have made hip arthroscopy an efficacious way to diagnose and treat a variety of intra-articular problems.

Arthrography↗