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Orthopaedic Proceedings
Vol. 86-B, Issue SUPP_I | Pages 23 - 24
1 Jan 2004
Béguin L Limozin R Demangel A Adam P Fessy M
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Purpose: Amstuz introduced the notion of a lever arm ratio to describe the relationship between the abductors and weight in arthroplasty. He demonstrated that patients may limp if defective lateralisation produces a low lever arm ratio. We analysed a continuous series of arthroplasty patients with excellent outcome at one year to compare restoration of lateralisation with the preoperative status. We also performed the same analysis in a series of patients who limped after arthroplasty, excluding cases with classical causes of failure. We then compared these two series.

Material and methods: We had a series of 100 arthroplasties with excellent results at one year. These patients had undergone unilateral arthroplasty and had a healthy contralateral hip. The centre of the arthroplasty head was identified on preoperative and one-year AP x-rays of the pelvis (same magnification). We measured the lateralisation in relation to the femoral axis. The position of the cup was measured with a U ratio. Results were expressed in percent restitution of the preoperative status. Amstutz’s lever arm ratio was also measured. Finally, we measured the distance between the pubic symphysis and the outermost point of the femur on the prosthetic and healthy side.

We also had a second population of twelve patients presenting persistent limping at one year with no objective cause. The same parameters were measured for this population.

Results: We found that we had achieved only partial restitution of the initial lateralisation and had a tendency to medialise the acetabulum. The restitution of lateralisation was significantly different between the series with excellent outcome and the series with limping.

Discussion: Deficient lateralisation appears to be a factor involved in persistent limping. There is a threshold for restitution of lateralisation; limping is always observed under this threshold. Data in the literature reveal a very wide variability in lateralisation. It would thus appear important to restore the initial lateralisation to avoid limping; this has led us, like others, to use lateralised implants for certain patients.


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_III | Pages 437 - 437
1 Oct 2006
Delaney R Lenehan B O’Sullivan L McGuinness A Street J
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Introduction: The limping child poses a diagnostic challenge. The purpose of this study was to create a clinically useful algorithm of presenting variables to allow the exclusion of ‘musculoskeletal sepsis’ as a differential diagnosis in the child presenting with a limp.

Materials & Methods: This study represents the data collected on all limping children admitted to our centre over a 3-year period. Analysis was based on 229 admissions. Comparison was made between the group with septic arthritis or osteomyelitis and the group without infection, using univariate analysis. With logistic regression analysis, a model consisting of three independent multivariate predictors was constructed, to exclude infection.

Results: Patients with septic arthritis or osteomyelitis differed significantly from patients without infection with regard to duration of symptoms, presence of constitutional symptoms, temperature, white cell count and erythrocyte sedimentation rate (ESR), (p-values < 0.05). Multivariate analysis demonstrated that the best model to describe our patient population was based on three variables: duration of symptoms between 1 and 5 days, temperature > 37.0°C and ESR > 35mm/hr. When all three variables were present, the predicted probability of musculoskeletal infection was 0.66. When none of the three were present, the predicted probability of infection was 0.01.

Discussion: Diagnosis of septic arthritis or osteomyelitis is especially difficult in the early phase and there is no single variable that can serve as a definitive test. The significance of constitutional symptoms and duration of symptoms on univariate analysis emphasises the importance of careful history taking. C-reactive protein, while considered for inclusion, was excluded due to its limited availability at our institution.

Conclusion: The multivariate model enables us to rule out musculoskeletal infection with 99% certainty in limping children with none of these three presenting variables.


Orthopaedic Proceedings
Vol. 90-B, Issue SUPP_III | Pages 538 - 538
1 Aug 2008
Jameson SS Michla Y Henman PD
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Introduction: Limp in a child is a common presentation to the emergency department. Most patients have no serious pathology. However, it is important not to miss specific problems and delay treatment. We therefore established a limping child protocol in conjunction with the emergency department, which was implemented in 2003. We aimed to assess our performance against agreed standards; 100% investigated as per protocol, and 100% admitted or seen in the next fracture clinic.

Methods: We examined all emergency department case notes of children aged less than 14 years old who presented with a lower limb problem over a 1 year period. Patients diagnosed as having soft tissue injuries or fractures were excluded. We were left with 58 patients. Information concerning investigations and disposal from the emergency department was sought from the case notes and the hospital computer system.

Results: Average age was 5.1 years. The protocol was followed correctly in only 21% of cases. 33% were followed-up incorrectly, and 22% received no documented follow-up.

Discussion: There was poor compliance in the emergency department. Incomplete investigations, follow-up and documentation were the main problems. Up to one quarter of serious pathology may have been missed. We attribute these problems to high staff turn over and poor awareness of the protocol. We have introduced changes to improve our performance.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_15 | Pages 13 - 13
1 Sep 2016
Mitchell P Viswanath A Obi N Ahmed S Latimer M
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The aim of this study was determine if the detection of pathology in children with a limp can be optimised by screening with blood tests for raised inflammatory markers.

The entry criteria for the study were children (0–15 years) presenting to our hospital Emergency Department from 2012–2015 with a non-traumatic limp or pseudoparalysis of a limb, and no sign of fracture or malignancy on plain radiographs. ESR and CRP blood tests were performed along with other standard investigations. Children with ESR or CRP over 10 underwent MRI scan of their area of pain or tendernesss, with those under 7 years old having general anaesthetic. MRI provided the diagnosis in cases of osteomyelitis, pyomyositis, fasciitis, cellulitis, discitis, as well as non-infective conditions such as malignancy and fracture not visible on plain radiographs. Where a joint effusion was present, the diagnosis of septic arthritis was made from organisms cultured following surgical drainage, or high white cell count in joint fluid if no organisms were cultured. The study was completed once data from 100 consecutive children was available.

64% of children had an infective cause for their symptoms (osteomyelitis, septic arthritis, pyomyositis, fasciitis, cellulitis or discitis). A further 11% had positive findings on MRI from non-infective causes (juvenile idiopathic arthritis, cancer, or occult fracture). The remaining 25% had either a normal scan, or transient synovitis. ESR was a more sensitive marker than CRP, since ESR was raised in 97% of those with abnormal scans, but CRP in only 70%. There were no complications from any of the GA MRI scans. Conclusion: This shows that MRI imaging of all children with a limp and either raised ESR or CRP is a sensitive method to minimise the chance of missing important pathology in this group, and is not wasteful of MRI resources.


Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_5 | Pages 93 - 93
1 Apr 2018
Boffano M Pellegrino P Ratto N Giachino M Albertini U Aprato A Boux E Collo G Ferro A Marone S Massè A Piana R
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Introduction and Purposes. Custom made acetabular prosthesis are a valid option for the reconstruction after the resection of pelvic tumors. They should guarantee a stable and reliable reconstruction for the expected survival of the patient. Nevertheless in many cases periacetabular metastatic lesions have been compared to high grade (IIIA-B) Paprosky defects, but treated with low or intermediate longevity implants. Some complex post-traumatic scenarios or total hip arthroplasty (THA) multiple failures need a reconstruction according to oncologic criteria to fill in the huge defect and to obtain an acceptable function. The aim of the study is to compare 3D custom-made implants for tumors and for THA failures. Materials and Methods. Three custom-made implants after tumor resection (group A: 1 chondroblastic osteosarcoma, 1 bifasic synovialsarcoma, 1 high grade chondrosarcoma) were evaluated and compared to 3 acetabular complex reconstructions after non-oncologic bone defect (group B: 3 cases of aseptic loosening after at least 2 revisions). All the implants were case-based designed, 3D printed, and realized with porous or trabecular surfaces on a Titanium base prosthesis. Age range 16–70 ys in oncologic patients and 60–75 ys in non-oncologic patients. The bone defect to be reconstructed after tumor resection was classified according to Enneking zones (1 type 1-2-3 resection, 1 type 2 resection, 1 partial type 2 resection). Non-oncologic cases were comparable in term of remaining bone stock and classified according to Paprosky classification for acetabular defects as 1 type IIIA an 2 type IIIB. Complications, MSTS functional score, necessity of walking-aids were evaluated at minimum follow up of 1 year. Results. In both groups, good functional results were obtained (MSTS score 25/30 in both groups). No cases of aseptic loosening and no infection occured. After 3 months of partial or no weight-bearing on the operated limb, 3 patients were able to walk unaided and 3 walked with one cane or crutch. No limb length discrepancy (major than 2 cm) were observed. Limping was present in oncologic cases due to muscle resection. Overall better results in term of satisfaction and quality of life were obtained in younger (oncologic) patients. Conclusions. Complex THA revision cases can sometimes be considered for a reconstruction with oncologic criteria. Even if indications are limited an acceptable functional results can be obtained. In the past for these cases a Girldestone resection was the only option. A collaboration among orthopaedic oncologist and hip arthroplasty surgeons is advisable in major orthopaedic centers to improve the prosthetic design and the functional results


Bone & Joint Research
Vol. 12, Issue 10 | Pages 624 - 635
4 Oct 2023
Harrison CJ Plessen CY Liegl G Rodrigues JN Sabah SA Beard DJ Fischer F

Aims

To map the Oxford Knee Score (OKS) and High Activity Arthroplasty Score (HAAS) items to a common scale, and to investigate the psychometric properties of this new scale for the measurement of knee health.

Methods

Patient-reported outcome measure (PROM) data measuring knee health were obtained from the NHS PROMs dataset and Total or Partial Knee Arthroplasty Trial (TOPKAT). Assumptions for common scale modelling were tested. A graded response model (fitted to OKS item responses in the NHS PROMs dataset) was used as an anchor to calibrate paired HAAS items from the TOPKAT dataset. Information curves for the combined OKS-HAAS model were plotted. Bland-Altman analysis was used to compare common scale scores derived from OKS and HAAS items. A conversion table was developed to map between HAAS, OKS, and the common scale.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 188 - 188
1 Sep 2012
Matharu G Thomas A Pynsent P
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Introduction. Direct lateral approaches to the hip require detachment and repair of the anterior part of the gluteus medius and minimus tendon attachments. Limping may occur postoperatively due to nerve injury or failure of muscle re-attachment. The aim of this study was to assess the integrity of abductor muscle repairs using a braided wire suture marker. Methods. Total hip arthroplasties were inserted using a modified Freeman approach. After repair of the abductor tendons using a 1 PDS suture with interlocking Kessler stitches, a 3–0 braided wire suture marker was stitched into the lower end of the flap. The suture was easily visible on postoperative radiographs and its movement could be measured. Patients were assessed using radiographs and Oxford hip scores collected prospectively. Results. 56 joint replacements were performed in 51 patients with no major surgical complications. Mean age was 65 yr and 80% (n=41) were female. It proved possible to reproducibly classify repairs based on radiographic measurements as: no wire movement (43%); repair stretched, moving cephalad a short distance (46%); repair detached, moving cephalad a significant distance (11%). Risk of failure of the repair had no relationship with age, preoperative Oxford hip score, or postoperative Oxford hip score. The mean Oxford hip score drop in the no movement group was 36%, the stretched group 37%, and the detached group 33%. These differences were not significant. Discussion/Conclusion. The wire marker proved to be a revealing method of auditing abductor repair following hip arthroplasty. No difference was demonstrated in outcome in relation to wire movement, therefore this study did not show any advantage from a careful repair technique. Due to the small number of failed repairs there may be a type II error. This method may also be useful in assessing the integrity of other large tendon repairs, such as quadriceps tendons splits in total knee replacements


Orthopaedic Proceedings
Vol. 86-B, Issue SUPP_II | Pages 148 - 148
1 Feb 2004
Choi I Chung C Cho T Yoo W
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Introduction: This study evaluated the clinical and radiological outcomes of Chiari osteotomy for severe coxa irregularis and subluxation of the femoral head. Materials and Methods: The study group included patients with late Legg-Calvé-Perthes disease (6 patients), posttraumatic avascular necrosis (1 patient), and multiple epiphyseal dysplasia (1 patient). The mean age at surgery was 11.4 years (range, 6.8 to 14.7). The clinical parameters evaluated included changes in pain, limp, and range of motion of the hip. Radiographic measurements were made to determine the width of the medial and superior joint spaces, acetabular coverage, lateral epiphyseal extrusion, and the Stulberg classification. Results: At a mean follow-up of 5 years (range, 1.1 to 11.0 years), pain disappeared completely in 5 patients or markedly decreased, enough to complete normal daily physical activities, in the remaining 3 patients. Limping gait disappeared completely in 2 patients, but the remaining 6 patients had minimal limps. All the components of the range of hip motion increased significantly. Acetabular coverage averaged 55% (range, 33 to 87%) before operation and 88% (range, 79 to 97%) at the final follow-up. Lateral epiphyseal extrusion was 49% (range, 39 to 83%) before operation, and 18% (range, 8 to 40%) at the final follow-up. Joint spaces were not changed significantly after surgery. Discussion: In conclusion, Chiari osteotomy has its own indications, as a salvage procedure, for older children and adolescents with subluxated, severe coxa irregularis. The current study confirms the efficacy of the operation in terms of the functional and radiological improvements


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_II | Pages 110 - 110
1 Apr 2005
Ibrahima F Pisoh-Tagnyi C Etom-Empimé S Abolo-Mbenti L Sosso M Eimo-Malonga E
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Purpose: Despite renewed interest in limb lengthening in western countries, the method is not widely used in Africa where congenital or acquired malformations produce a significant number of indications. We reviewed the first cases of limb lengthening procedures performed over the last five years. Material and methods: The series included ten patients, five male five female, mean age 16.3 years (5–28). Indications for lengthening procedures were limb length discrepancy which was painful, bothersome, or disabling (n=8) or loss of bone substance (n=3). Indications were established after history taking, physical and radiographic examinations (telemetry of the lower limbs to determine leg length discrepancy or identify gap, or to identify associated anomalies). The classical technique was used: external fixator, osteotomy, progressive lengthening, 1 mm/d after a latency period. Results: Initially mean length discrepancy was 7.8 cm (range 3 – 16). Mean duration of external fixation was 207.9 days (60–294). The de Bastiani consolidation index was 24 d/cm. Nine complications were recorded and there was one therapeutic failure requiring amputation. Discussion: Limping due to congenital or acquired leg length discrepancy is common in our region. When seen late, the discrepancy is generally greater than in western countries (mean in our series greater than in the literature) and is often associated with multiple anomalies further complicating therapeutic management (prolonged use of external fixation). Filling bone gaps by lengthening techniques is a very attractive solution which could avoid numerous amputations in the African setting. Conclusion: Limb lengthening procedures remains a difficult technique to implement in Africa. This challenging situation is even more stimulating due to the very great potential for patient benefit


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_II | Pages 121 - 121
1 Jul 2002
Gosens T van Langelaan E
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The purpose of the study was to analyse the clinical and radiological results of cementless HAP-coated Mallory- Head hip replacement in dysplastic hips. The collective included 20 males and 30 females (64 hips), with a mean age of 52.6 (range 20–68) years at operation. We also included two patients (4 hips) with spondyloepiphy-seal dysplasia (dwarfism). All patients were operated by one surgeon (EvL) during the period 1991–1997. A majority had “champaign flute” type femur. A minority had a normal or “stove pipe” type femur (Dörr). Most patients had acetabular dysplasia classified as A or B (Eftekar); some were classified as C and one as D (after Schanz osteotomy). Previous operations included: derotating varous osteotomy (11), acetabular shelf plasty (9), Salter or Chiari pelvic osteotomy (4) and tenotomy of the hip adductors (2). After a mean follow-up of 57 (range 32 to 97) months, a clinical and radiological analysis was performed by an independent investigator (TG). Postoperatively no or only mild pain was reported by 89% of all patients. The VAS for pain (0–10) was excellent: 1.70 (0–7). Limping was reported in 23% and 75% used no support when walking. The HHS increased from 42 to 90 points. Complications were marginal and there were no infections. One patient developed habitual dislocation and a revision of the cup was perfomed. We saw two periprosthetic fractures of the femur: once during surgery (treated conservatively) and once after a fall (treated by plating). We saw one case of temporary ischiadical nerve palsy after leg lenghtening of 5 cm. There were two cases in which we had used 32mm heads, and PE-wear necessitated revision of the cup after seven and eight years follow-up, respectively. Cortical hypertrophy indicating stress transfer was found in 28% and located mostly on the borders of Gruen-zones 2, 3 and 5, 6. This cortical hypertrophy (“ballooning”) started to appear after 0.5 to 1 year and did not disappear after a longer follow up. Endosteal spotwelds were infrequently seen (9%) and in 13% of all patients we saw some form of halo- or shelf-formation at the distal stem. The criteria of Enghs fixation scale are not signs of loosening in the Mallory-Head HAP-coated femoral prosthesis. No radiolucent or radiodense lines were seen around the acetabular cup. In all cases but one (Schanz osteotomy) the anatomical centre of rotation could be restored. We conclude that the cementless Mallory-Head HAPcoated femoral prosthesis has shown, up to present time, excellent clinical and radiological results in hip dysplasia


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_I | Pages 169 - 169
1 Mar 2006
Asensio N Vega Chávez M Quiles Galindo M
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Hip fractures are frequent due to osteoporosis and old age. The incidence of the second hip fracture had been reported as 5–9%. Subcapital displaced fractures in the elderly are treated sometimes with hip hemiarthroplasty. Our aims was to evaluate patients with bilateral no simultaneous hip fracture treated with hemiarthroplasty at our institution. Material and methods.- Twenty-two patients, 19 women and 3 men, were evaluated with a mean age of 79 at the initial fracture and 82 at the subsequent fracture. In 13 the first fracture was on the left and 9 on the right. All were of Garden grade IV. One of the fractures occurred from 1994 to 2003. The mean hospital stay was 18 days for the first fracture and 14 for the second. The second fracture happened a mean of 4 years after the first one (1 month to 9 years). This report is based on 14 of these patients, with more than one-year follow-up. The others 8, 6 had died and 2 were missing. Results.- Walking capacity: previous to the first fracture 11 walked more than 1000 meters, 3 between 100 and 500 meters. Outdoors: after the first fracture 6 walked without help, 3 used one cane and 3 used a walker or two canes, and 2 were unable. After the second fracture 1 walked without help, 2 used one cane, 5 used two canes or walker and 6 were unable. Indoors: after the first fracture 12 walked without help, 2 were able with the help of one cane, 2 with two canes. After the second fracture 2 walked without help, 3 used one cane, 7 used two canes or walker and 2 were unable to walk. Dressing: all were independent before; after the first 12 and after the second 7. Bathing: 13 were independent before, after the first 9 and after the second 5. Feeding: all were independent before, after the first 11 and after the second 6. Toilet: 13 were independent before, after the first 9 and after the second 4. Shopping: 11 were independent before, after the first 5 and after the second 0. Housekeeping: 11 independent before, 1 with help and 2 unable, after the first 4 were independent, 5 need help and 5 unable, and after the second 1 was able, 3 with help and 11 unable after the second. Public transport: 3 were able and 11 unable before the fracture, after the first fracture 3 were able and 11 unable, after the second fracture none was able, 2 with help and 12 unable. Finances: 2 were able and 12 unable before the fracture, after the first fracture 2 were able and 12 unable, and after the second 2 with help and 12 unable. Eight were limping and 6 had groin pain. Conclusion.- Previous to the first fracture walking capacity was good in this age group. Following the first hemiarthroplasty patients deteriorate in their walking capacity and others activities of daily life and much so after the second one. Limping or groin pain was present in all after the second fracture with more than one year follow-up


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_III | Pages 351 - 352
1 Nov 2002
Dorn U Neumann D
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DDH with or without previous treatment is the most frequent source of early hip OA in adolescents. Others are hip joint deformation following Legg-Calve-Perthes disease, slipped capital epiphysis or trauma. Secondary OA after rheumatoid arthritis, bacterial infection or as result of an hemophilic hip joint are relatively infrequent. The choice of treatment depends on the type of the deformity and the severity of osteoarthritic changes. Osteotomies are favorably performed in adolescents. Arthrodesis is rarely accepted in this age group. In selected individuals THR is the matter of choice. Pain, limping gait, restricted joint motion and sometimes clicking phemomena are the usual complains. Pain is usually aggravated by running and other sports activities. Residual dysplasia of the hip with a spherical femoral head is best treated by a triple periacetabular osteotomy. The Bernese ostetomy of Ganz (. 3. ) and the triple osteotomy of Tönnis (. 9. ) are popular procedures. They mobilise an acetabular fragment, then reorient and stabilise the fragment in an optimal position. Internal fixation with screws provides stability and allows early mobilisation with partial weight bearing. Chiari’s osteotomy is a supracetabular rotatory displacement osteotomy. Femoral head and joint capsule are medialised and covered by the osteomised iliac bone. The joint capsule in the weight bearing zone is transformed into fibrous cartilage by time. Congruent remodelling of the acetabular roof and fibrous tissue transformation into cartilage are biased by inproper height and orientation of the osteotomy (. 5. ). There is still an indication in severe DDH with subluxation of the femoral head and those with a severely deformed femoral head. In pathomorphologies with aspherical femoral heads femoral osteotomies, usually valgus osteotomies, are required additionally in order to optimize the joint congruency. A dysplastic hip in a high dislocation and moderate to severe OA are contraindications. Radiographic work up includes pelvic ap view and faux profil view. Assessment of the anterior and posterior acetabular rim indicate orientation of the acetabulum in terms of anteversion / retroversion. Orientation of the subchondral sclerosis over the femoral head is an indicator of femoral head coverage as CE-angle and AC-angle. 20°–30° abduction view in neutral rotation mimikes the postoperative acetabulum / femoral head relation. From CT-scans acetabular orientation ( ante-version / retroversion ), degenerative bone cysts, posteroinferior joint space and femoral head deformities and femoral neck osteophytes are depicted. Labrum pathology is dedectable by MRT and MRT-arthrography. After treatment of DDH deformation of the femoral head and neck due to ischaemic necrosis develop in an incidence up to 20 %, depending on the method. Premature closure of the epiphyseal plate can also follow trauma, septic arthritis and Legg-Calve-Perthes disease. Most often an combination of acetabular dysplasia and coxa magna with short femoral neck and a high-standing greater trochanter are typical deformities. Specchiulli’s classification (. 8. ) is very helpful for deformations after avascular necrosis in DDH. Limping gait due to femoral shortening and insufficient strength of the abductor muscels are the major complains of adolescents. Symptoms exacerbate during walking of longer distances and restrict sports activities. Valgus osteotomy, Y-osteotomy, transfer of the greater trochanter alone or in combination with valgus osteotomy are appropiate methods to restore a better function and improve alignment of the mechanical axis to the knee joint. Femoral neck lengthening osteotomies (. 1. ,. 4. ) with distal-lateral transfer of the greater trochanter are advocated by several authors. Restoration of almost normal anatomy muscle function of the hip joint are realistic aims of these methods. If the abductor muscel deficit is dominant and only a minor leg length discrepancy is in slight deformities, e.g. some Specchiulli’s type B2, we do not always need such complex procedures. Isolated transfer of the greater trochanter also improves the lever arm of the abductor muscles and therefore joint function, but does not influence leg length discrepancy. Disappearance of the Tren-delenburg-type gait is the most visible improvement of this procedure (. 7. ). Total hip replacement (=THR) is rarely indicated in adolescents, but sometimes necessary for restoration of a almost normal quality of life. Especially in severe symptomatic OA after septic arthritis or trauma in some individuals remain only two options : arthrodesis or arthroplasty. Arthrodesis is a permanent solution for many years or even life time. Gait function is compromised remarkable (. 6. ) and specific compensatory mechanisms are adopted when walking. Excessive motion in the lumbar spine and ipsilateral knee provokes back and knee pain as well as osteoarthritic changes on the long run. THR in young patients includes the risk of several revisions over life time , due to wear problems particularly in physically active individuals. A deficient acetabular bone stock as usual in severe acetabular dysplasia or poor bone quality after trauma or septic arthritis may compromize primary stability and secondary osteointegration. Nevertheless functional results and outcome (. 2. ) in terms of life quality are superior compared with various non-substituting procedures


Bone & Joint Research
Vol. 1, Issue 9 | Pages 225 - 233
1 Sep 2012
Paulsen A Odgaard A Overgaard S

Objectives

The Oxford hip score (OHS) is a 12-item questionnaire designed and developed to assess function and pain from the perspective of patients who are undergoing total hip replacement (THR). The OHS has been shown to be consistent, reliable, valid and sensitive to clinical change following THR. It has been translated into different languages, but no adequately translated, adapted and validated Danish language version exists.

Methods

The OHS was translated and cross-culturally adapted into Danish from the original English version, using methods based on best-practice guidelines. The translation was tested for psychometric quality in patients drawn from a cohort from the Danish Hip Arthroplasty Register (DHR).