Watchful waiting for the undisplaced hip dysplasia when undergoing contralateral hip reconstruction.

PURPOSE: Patients undergoing surgical reduction of the dislocated hip secondary to developmental dysplasia may have a contralateral undisplaced dysplastic hip. This study aimed to compare the observation of the contralateral undisplaced dysplastic hip with the treatment by acetabuloplasty in terms of persistent dysplasia to determine the need for bilateral surgery. METHODS: Acetabular dysplasia was defined by an acetabular index (AI) of more than 30 degrees plus a center edge angle (CEA) of less than 20 degrees. A surgical database was queried retrospectively for a cohort between 2008 and 2016. Inclusion criteria were aged between 1 and 6 years, unilateral developmental dysplasia (international hip dysplasia institute grade 1) with contralateral dislocation, no previous treatment and a minimum follow-up of 1 year. RESULTS: Fifty-seven patients were included, 40 in the observation group and 17 in the acetabuloplasty group. The mean age (interquartile range) was 20 (17-23) months, and the mean follow-up was 42 (22-62) months. The baseline values were similar for both groups. At the final follow-up, no hip had dysplasia, as specified a priori in either group, but the final AI and CEA were corrected more in the acetabuloplasty group (p < 0.001). Based on the adjusted analysis, both acetabuloplasty and follow-up without treatment were associated with improved acetabular coverage. CONCLUSION: Watchful expectancy of undisplaced hip dysplasia presenting in patients undergoing contralateral hip reconstruction during years of acetabular growth is safe as the risk of persistent dysplasia and additional surgery is low. LEVEL OF EVIDENCE: III.

Variability in Australian screening guidelines for developmental dysplasia of the hip.

AIM: To assess the variability in Australian screening guidelines for developmental dysplasia of the hip (DDH). METHODS: Ovid MEDLINE®, EMBASE, EMB Reviews-Cochrane, CINAHL, TRIP and grey literature were searched to identify screening guidelines for DDH. Key data items related to recommendations for timing and method of screening were extracted and summarised in a table format for qualitative analysis. RESULTS: Seventeen guidelines met inclusion criteria, comprising nine Australian DDH screening guidelines and eight Child Health Books. The guidelines showed variation in recommendations for the examiner, specific screening methods used for high-risk groups, timing of examinations and recommendations for referral. CONCLUSIONS: Variability exists within Australian DDH screening guidelines. Lack of knowledge regarding local screening guidelines may contribute to the current trend of increased incidence of late diagnosed DDH in Australia, reported in New South Wales, South Australia, and Western Australia. An evidence-based and consistent approach to DDH screening is necessary to minimise late detected cases.

The effectiveness of preliminary traction in the treatment of congenital dislocation of the hip.

BACKGROUND: Historical papers on the treatment of congenital dislocation of the hip suggest the use of preliminary traction to facilitate closed reduction or to decrease the risk of avascular necrosis (AVN) of the femoral head. In the 1980s, some authors questioned the role of preliminary traction and suspended its use, yielding satisfactory results. Since then, several studies called into question this method, and some authors have continued to recommend preliminary traction while other authors have discouraged its use. MATERIALS AND METHODS: We reanalysed the full set of radiographs of 71 hips (52 patients) surgically treated by a medial approach after 4 weeks of preoperative longitudinal traction. The mean age at operation was 16 months. Before and after traction, the height of the dislocation was graded according to the Gage and Winter method. The hips were divided into two groups: group 1, in which the traction was effective, and group 2, in which the traction was not effective. These two groups were statistically analysed regarding the severity of the dislocation, the age of the patient at surgery and the incidence of AVN. RESULTS: Preliminary traction was effective in 48 hips (68%, group 1), while it was not effective in the remaining 23 (32%, group 2). The effectiveness of preliminary traction was statistically related to the height of the dislocation and to the age of the patient at surgery, with traction being less effective in more severe dislocations and in older children. The incidence of AVN was statistically lower in group 1 than in group 2. CONCLUSIONS: In our study population, despite not having a control group, preliminary traction-when effective-seemed to reduce the incidence of AVN in patients surgically treated for congenital dislocation of the hip. The effectiveness of the traction was influenced by the severity of the dislocation and the age of the patient; it worked better for less severe dislocations and in younger children. To reduce hospital costs, traction should be applied at home. LEVEL OF EVIDENCE: 3.

Surgical management of the congenital dislocation of the knee and hip in children presented after six months of age.

PURPOSE: Congenital dislocation of the knee and hip is a rare congenital disorder. The specific aim of the study was to evaluate the clinical and radiological outcomes of the children with congenital dislocation of the knee and hip who presented after six months of age. METHODS: All the consecutive children with congenital dislocation of the knee and hip joints were retrospectively reviewed. We included cases that were treated after six months of age and followed up for a minimum of two years. Twenty-four children with congenital dislocation of the knee and hip (thirteen with ligamentous laxity, eleven children with stiff joints) were included. The knee was dislocated in 45 limbs; the hip was dislocated in 40 instances. The knee joint dislocation was treated with quadricepsplasty in all twenty-four children (45 knees). The hip dislocation (n = 32) was addressed with either closed reduction (n = 8) or open reduction of the hip (n = 24). Eight hip dislocations were not addressed. The outcome of the hip and knee was evaluated. RESULTS: The clinical and radiological outcomes were better in children with ligamentous laxity than without laxity. Twenty-two children were community walkers. An orthosis was needed in eight children. The frequency of spontaneous reduction of unreduced dislocation of the hip was noted in three children (5/8 hips). CONCLUSION: Outcome in combined dislocation of knee and hip is good in most cases with surgical interventions. The outcome is better in children with ligamentous laxity. Spontaneous reduction of the dislocated hips might be achieved after gaining knee flexion following knee surgery for congenital the knee in a few cases.

Adolf Lorenz and the Lolita Armour Case.

Almost 120 years ago, in 1902, the American multimillionaire J. Ogden Armour invited the Austrian orthopaedic surgeon Adolf Lorenz, professor at the University of Vienna, to treat his daughter Lolita. Lolita was born premature in 1896 and spent the first months of her life in an incubator. Later she was diagnosed with congenital dislocation of both hips. Lorenz had developed a "bloodless" treatment method and was invited by the Armour family to Chicago to "operate" on Lolita. Both hips had already been treated by an American orthopaedic surgeon before but without a satisfactory result. Lorenz should achieve a better one. The operation was performed in Chicago on 12 October 1902 and was accompanied by a very large media spectacle. This article is mainly based on contemporary newspaper reports.

Screening in Developmental Dysplasia of the Hip (DDH).

Screening for Developmental Dysplasia of the Hip (DDH) is a controversial subject. Screening may be by universal neonatal clinical examination (Ortolani or Barlow manoeuvres) with the addition of sonographic imaging of the hip (selective 'at risk' hips or universal screening in the neonate). In the UK, the NIPE guidelines recommend universal neonatal clinical assessment of the hip joints, a General Practitioner 6-8 week clinical 'hip check' and assessment clinically with sonographic imaging at 4-6 weeks for certain 'at risk' hips for pathological DDH. The effectiveness and difficulties arising from the UK current screening policy (clinical and sonographic) are highlighted. The purpose of the review was to assess the risk factors and efficacy of diagnostic methods in DDH, based on longitudinal cohort studies of 10 years or more. CONCLUSION: Hip screening in DDH does not meet most of the World Health Organisation's criteria for an effective screening programme and should only be considered as surveillance due to its low sensitivity and positive predictive value (PPV). There is a significant risk of over diagnosis and over treatment. There is no International consensus on screening in DDH. Pathological DDH is mainly a female condition and 'at risk'/General Practitioner screening identifies few pathological cases in male subjects. The General Practitioner 6-8 week 'hip check' has a very low PPV for pathological DDH and is of doubtful value in screening and diagnosis. Unilateral limitation of hip abduction is a time dependent and useful clinical sign in the diagnosis of pathological DDH. The majority of the previously considered 'at risk' factors are not true risk factors with little or no association with pathological DDH.

The Feasibility of Prenatal Ultrasonic Screening for Developmental Dysplasia of the Hip.

BACKGROUND: developmental dysplasia of the hip (DDH) is a condition characterized by abnormal hip development in infancy. Early diagnosis allows for effective treatment, while late presentation often necessitates complex surgical interventions. Current recommendations advise screening between the 6th and 8th week postnatal using an ultrasound, typically employing the Graf method. However, there is no universal consensus on whether ultrasound screening significantly increases treatment likelihood compared to clinical examination-guided ultrasound. This study aims to explore the feasibility of prenatal ultrasound for the early identification of DDH risk. METHODS: This prospective observational study involved 100 pregnant women undergoing fetal hip ultrasounds during the second and third trimesters. Using the modified Graf method, alpha and beta angles were calculated on the fetus. Postnatally, alpha and beta angles were compared with the prenatal values. RESULTS: Prenatal ultrasound at the 24th week showed inconclusive results because of the difficulty in identification of Graf landmarks, while ultrasound at the 34th week proved to be a reliable and safe method for the quantitative determination of alpha and beta angles. Significant correlations were found between prenatal and postnatal alpha and beta angles. Moreover, significant differences in prenatal alpha and beta values were observed in patients developing mature/immature hips postnatally. CONCLUSIONS: Prenatal diagnostics show promise for predicting infant hip development. Further research is warranted to validate correlation strength and clinical applicability.

Breech preterm infants are at risk of developmental dysplasia of the hip.

AIM: There is uncertainty about the risk of developmental dysplasia of the hip (DDH) in breech preterm infants and therefore uncertainty about the benefits of using ultrasound screening in this population. The aim of this study was to determine if preterm infants born in the breech position are at risk of DDH. METHODS: A retrospective audit of preterm and term infants born in the breech position was performed to determine the incidence of DDH. Group 1 included breech preterm infants (<37 weeks gestational age) born between 2004 and 2008. Group 2 included breech term infants (≥37 weeks gestational age) born between 2005 and 2007. Infants were screened with clinical examination and ultrasound of the hip and were classified into two outcome groups: positive or negative for DDH. RESULTS: Three out of 129 (2.3%) preterm infants screened had DDH. For term infants, 3 out of 163 (1.8%) infants screened had DDH. The odds ratio for DDH in breech preterm infants compared with breech term infants was 1.27 (95% confidence interval 0.25 to 6.40). CONCLUSION: Preterm infants born in the breech position appear to have a similar incidence of DDH to term infants and thus require similar screening guidelines.

An Overview of Developmental Dysplasia of the Hip and Its Management Timing and Approaches.

Developmental dysplasia of the hip (DDH), if uncorrected, can result in several chronic abnormalities, including chronic hip pain, degenerative arthritis, and gait abnormalities. The outcome of DDH generally depends on the age of presentation; a worse prognosis is linked to a higher age of presentation. Although treatment continues to be a challenge, recent advancements in the field have improved our understanding of the disease, which has resulted in advancements in DDH surveillance during infancy and the reduction of complications with early intervention. The databases used for this overview include Cochrane Central Register of Controlled Trials (CENTRAL), the Cochrane Library, MEDLINE, and EMBASE. These databases were used to search for ongoing trials related to the management and diagnosis of DDH.

Developmental Dysplasia of the Hip (DDH): Etiology, Diagnosis, and Management.

Developmental dysplasia of the hip (DDH) is a complex disorder that refers to different hip problems, ranging from neonatal instability to acetabular or femoral dysplasia, hip subluxation, and hip dislocation. It may result in structural modifications, which may lead to early coxarthrosis. Despite identifying the risk factors, the exact aetiology and pathophysiology are still unclear. Neonatal screening, along with physical examination and ultrasound, is critical for the early diagnosis of DDH to prevent the occurrence of early coxarthrosis. This review summarizes the currently practised strategies for the detection and treatment of DDH, focusing particularly on current practices for managing residual acetabular dysplasia (AD). AD may persist even after a successful hip reduction. Pelvic osteotomy is required in cases of persistent AD. It could also be undertaken simultaneously with an open hip reduction. Evaluation of the residual dysplasia (RD) of the hip and its management is still a highly active area of discussion. Recent research has opened the door to discussion on this issue and suggested treatment options for AD. But there is still room for more research to assist in managing AD.

Pericapsular Nerves Group (PENG) Block in Children under Five Years of Age for Analgesia in Surgery for Hip Dysplasia: Case Report.

INTRODUCTION: The Pericapsular Nerve Group (PENG) block is a novel technique that allows for analgesia of the anterior hip capsule via the articular branches of the accessory obturator nerve and femoral nerve, which have a significant role in the innervation of the hip capsule. A PENG (Pericapsular Nerves Group) blockade is effective in both adult and pediatric patients. However, no studies on patients under five are available in the literature. Herein, we describe our experience with two pediatric patients with hip dysplasia. PURPOSE: This study aimed to evaluate the analgesic effect of the pericapsular nerves group (PENG) in preschool children undergoing hip surgery. PATIENTS AND METHODS: This study included two patients, aged 4 and 2 years old, who were qualified for hip surgery. Spinal or general anesthesia with the addition of a PENG block was performed. During the procedure, the basic hemodynamic parameters were monitored. The pain was assessed using the FALCC (Face, Legs, Activity, Cry, Consolability scale) score. A dose of 15 mg/kg-1 of metamizole was administered if the FLACC score was 3. In the case of a score of 4 on the FLACC scale, the application of 0.2 mg/kg-1 of nalbuphine was ordered. RESULTS: After the surgery, the patients received 15 mg/kg-1 IV paracetamol every 6 h to prevent rebound pain. The patient's hemodynamic parameters were stable and within normal range. In the first 24 h period, the FLACC scores from all patients ranged from 0 to 3. One patient required metamizole 12 h after surgery. No evidence of block complications was observed. CONCLUSIONS: This case series showed that the PENG block assured opioid-free pain management and provided adequate postoperative analgesia. However, we are convinced that future randomized, controlled trials are needed in this field.

Sequelae of late diagnosis and treatment of developmental dysplasia of the hip: case report and surgical technique description. / [Secuela de diagnóstico tardío y tratamiento en displasia del desarrollo de la cadera: reporte de caso y descripción de técnica quirúrgica.]

Developmental hip dysplasia (DHD) is a common entity that affects 4 out of every 1000 live births and is a recognized cause of secondary hip osteoarthritis despite routine perinatal controls. In most patients, the early diagnosis of the pathology allows an evolution without sequelae. However, in the basis that patients diagnosed late and with multiple surgeries are patients with open physis, ossification nuclei present and previous surgeries in the approach area, the late diagnosis represents a real challenge for the orthopedist. We report below the case of a patient treated in our center since birth, who evolved with complications associated with late diagnosis and surgical interventions, describing rescue surgery performed at 12 years of age and finally highlighting the importance of routine perinatals and early diagnosis of DHD.

La displasia del desarrollo de la cadera (DDC) es una entidad frecuente que afecta a 4 de cada 1000 nacidos vivos y es una causa reconocida de artrosis de cadera secundaria a pesar de los controles perinatales de rutina. En la mayoría de los pacientes, el diagnóstico precoz de la patología permite una evolución sin secuelas. Sin embargo, el diagnóstico tardío con múltiples intervenciones representa un verdadero reto para el ortopedista, ya que se trata de pacientes con fisis abierta, nucleos de osificación presentes y cirugías previas en la zona de abordaje. Se reporta a continuación el caso de una paciente tratada en nuestro centro desde su nacimiento, que evolucionó con complicaciones asociadas al diagnóstico tardío y a las intervenciones quirúrgicas, describiendo la cirugía de salvataje realizada a los 12 años de edad y destacando finalmente la importancia de los controles perinatales de rutina y el diagnóstico precoz de la DDC.

Developmental dysplasia of the hip: update of management.

The term 'developmental dysplasia of the hip' (DDH) includes a wide spectrum of hip alterations: neonatal instability; acetabular dysplasia; hip subluxation; and true dislocation of the hip.DDH alters hip biomechanics, overloading the articular cartilage and leading to early osteoarthritis. DDH is the main cause of total hip replacement in young people (about 21% to 29%).Development of the acetabular cavity is determined by the presence of a concentrically reduced femoral head. Hip subluxation or dislocation in a child will cause an inadequate development of the acetabulum during the remaining growth.Clinical screening (instability manoeuvres) should be done universally as a part of the physical examination of the newborn. After two or three months of life, limited hip abduction is the most important clinical sign.Selective ultrasound screening should be performed in any child with abnormal physical examination or in those with high-risk factors (breech presentation and positive family history). Universal ultrasound screening has not demonstrated its utility in diminishing the incidence of late dysplasia.Almost 90% of patients with mild hip instability at birth are resolved spontaneously within the first eight weeks and 96% of pathologic changes observed in echography are resolved spontaneously within the first six weeks of life. However, an Ortolani-positive hip requires immediate treatment.When the hip is dislocated or subluxated, a concentric and stable reduction without forceful abduction needs to be obtained by closed or open means. Pavlik harness is usually the first line of treatment under the age of six months.Hip arthrogram is useful for guiding the decision of performing a closed or open reduction when needed.Acetabular dysplasia improves in the majority due to the stimulus provoked by hip reduction. The best parameter to predict persistent acetabular dysplasia at maturity is the evolution of the acetabular index.Pelvic or femoral osteotomies should be performed when residual acetabular dysplasia is present or in older children when a spontaneous correction after hip reduction is not expected.Avascular necrosis is the most serious complication and is related to: an excessive abduction of the hip; a force closed reduction when obstacles for reduction are present; a maintained dislocated hip within the harness or spica cast; and a surgical open reduction. Cite this article: EFORT Open Rev 2019;4:548-556. DOI: 10.1302/2058-5241.4.180019.

Surgical reduction of congenital hip dislocation.

Surgical reduction of congenital hip dislocation is technically challenging. In our practice, surgical reduction is usually reserved for patients who have failed non-operative treatment, which is the first-line strategy. However, primary surgery may be indicated if the dislocation is diagnosed late and can be performed until 8 years of age. The reduction step is crucial. It starts with painstaking exposure of the capsule. Identifying the lower part of the acetabulum is the key to accurate repositioning of the epiphysis. The main intra-articular procedures are resection of the ligament teres, adipose tissue within the acetabular cavity, and transverse acetabular ligament; and eversion of the radially incised limbus. In patients younger than 1 year of age, surgical reduction can be performed via the anterior approach or, in some cases, the obturator approach. No complementary steps are needed. If the diagnosis is made late, in contrast, reduction of the hip must be combined with corrective procedures on the femur and acetabulum designed to stabilise the reduction before the capsulorrhaphy, with the goal of optimising hip stability and minimising the risk of residual dysplasia. Femoral shortening and derotation osteotomy was classically reserved for children older than 3 years but has now been shown to be a useful and prudent procedure in younger patients. This osteotomy decreases pressure on the epiphysis, facilitates the reduction, and diminishes the risk of recurrence and avascular necrosis of the femoral head, which are the two dreaded complications. The outcome depends on the care directed to the procedure and on the quality of postoperative management.

Congenital dislocation of the hip: optimal screening strategies in 2014.

A prospective multi-centre nationwide study of patients with congenital dislocation of the hip (CDH) diagnosed after 3 months of age was conducted with support from the French Society for Paediatric Orthopaedics (Société Française d'Orthopédie Pédiatrique [SoFOP]), French Organisation for Outpatient Paediatrics (Association Française de Pédiatrie Ambulatoire [AFPA]), and French-Speaking Society for Paediatric and Pre-Natal Imaging (Société Francophone d'Imagerie Pédiatrique et Prénatale [SFIPP]). The results showed inadequacies in clinical screening for CDH that were patent when assessed quantitatively and probably also present qualitatively. These findings indicate a need for a communication and educational campaign aimed at highlighting good clinical practice guidelines in the field of CDH screening. The usefulness of routine ultrasound screening has not been established. The findings from this study have been used by the authors and French National Health Authority (Haute Autorité de Santé [HAS]) to develop recommendations about CDH screening. There is an urgent need for a prospective randomised multi-centre nationwide study, which should involve primary-care physicians.

Utility of magnetic resonance imaging (MRI) after closed reduction of developmental dysplasia of the hip.

PURPOSE: Magnetic resonance imaging (MRI) has been successfully used in the determination of the adequacy of the surgical reduction of congenitally dislocated hips in children. We present the results of a prospective series of patients treated conservatively. MRI was performed in all hips after positioning was deemed adequate on radiographs after spica cast application. The goal of this study was to evaluate the usefulness of MRI in this indication. METHODS: After the study was approved by our local ethics committee, 31 patients for a total of 36 dislocated hips were included. After the traction period, hip testing was performed and a hip spica cast was applied under general anaesthesia. All children had MRI within 1 week of reduction, without the need for contention or general anaesthesia. Hip reduction was assessed on axial and coronal MRI images. RESULTS: The concentric reduction of the hip was confirmed in 30 cases out of 36. In three cases, the dislocation was retrospectively suspected on radiographs and then confirmed. In the three remaining cases, hip dislocation was only diagnosed on MRI. CONCLUSIONS: MRI screening of congenitally dislocated hips after reduction procedures is a safe and reliable procedure to assess the concentric reduction of the hip. Even in doubtful cases, MRI detected persistent hip dislocations and was conducive to iterative reduction and satisfactory outcome and result.

A Clinical Study of Congenital Dislocation of the Hip / 대한정형외과학회잡지

The congenital dislocation of the hip is one of the most common congenital disease in the field of the orthopedic surgery. For the normal development of the acetabulum and femoral head, the displaced femoral head shouid be replaced in the acetabular socket as early as possible. In most cases treated in proper time, closed reduction is successful. If not, operative correction will almost always be necessary due to abnormal changes of the acetabulum and femoral head. We experienced 33 cases in 32 patients of the congenital dislocation of the hip at the Department of Orthopedic Surgery of Hanyang University Hospital from May, 1972 to December, 1980. The results obtained were as follows: 1. The most common aged group at the first visit was ranged from 12 months to 24 months and the preponderance of girl to boy was 3.6:1. 2. The ratio of left to right side was 1.6:1. 3. In delivery history, there were 3 cases of breech presentation, 1 case of Cesarean section and 1 case of prematurity. The associated congenital anomaly was observed in a case of which combined internal tibial torsion and talipes metatarsus varus deformity. 4. In 33 cases in 32 patients, 22 cases were treated conservatively and 11 cases were treated surgically. The results of treatment were excellent in 21 cases, good in 11 cases and fair in 11 case. We experienced 4 cases of neglected congenital dislocation of the hip in the period of late childhood, 3 cases were treated with Chiari osteotomy and the other 1 case was treated with Colonna capsular arthroplasty. The overall results were excellent.

The Treatment of Bilateral Congenital Dislocation of the Hip / 대한정형외과학회잡지

There are few reports in the literature on how to care and manage bi!ateral congenital dislocation of the hip. Six patients have been encountered at this hospital from June 1979, of them four children had operative treat ment and the other two conservative. As a result of our experience about the management of bilateral congenital dislocation of the hip. The authors obtained the following conceptions; 1. The patient with bilateral dislocation was rather delayed in diagnosis. Therefore, in comp the treatment of bilateral cases was poorer than that of unilateral case. 2. In the case of the dislocated hip that might be easily reduced and maintained in the stab servative care was usually recommeded even in the older child. Unstable, unreduced hip,; hip in old children, the more definitive operation and internal & external rigid immobilization mandatory to get good result. 3. It might be beneficial to operate the more deformed and resistive hip first, and then to p with the same procedure 2 weeks after the first operation.

A Clinical Analysis on Treatment of Congenital Dislocation of the Hip in Old Childhood / 대한정형외과학회잡지

It is well known the early diagnosis and early treatment is very important for the patient with congenital dislocation of the hip(CDH) to provide a favorable function in the whole life. However, despite screening programmes for the detection of CDH, children with dislocated hip continue to present late. While there has been general agreement as to the need for treatment of persistent acetabular dysplasia secondary to CDH, the appropriate treatment has been a matter of controversy for many years, and the surgical treatment of CDH in old children presents a more formidable technicalchallenge than in younger child. The author studied 26 cases in 23 patients of CHD aged between 6 years and 13 years at the Department of Orthopedic Surgery of Yonsei University during a 6 year period from January, 1979 to December, 1984. The aim of this study was to find out available surgical treatment for the old childhood with CDH and to assess the comparative results of age, degree of acetabular dysplasia and the station of femoral head displacement. The results of this study are are as follows; l. Among the 23 patients, female was 20 patients, male was 3 patients and 3 female patients show bilateral involvement. And among 26 cases, left hip involvement was 21 cases and right hip involvement was 5 cases. 2. Age at initial operation was 8 years and 10 months in average ranging from 6 years and 2 months to 13 years and 4 months, and average follow-up time was 3 years and 11 months ranging from 1 year 6 months to 5 years 2 months. 3. Attended type of surgery of the CDH in old childhood were 4 cases of Salter's innominate osteotomy, 5 cases of Sutherland's double innominate osteotomy, 5 cases of Salter's innominate osteotomy with femoral shortening and 12 cases of Klisic procedure. 4. Age of the patient as well as degree of acetabular dysplasia and station of femoral head displacement may influence on determination of type of the surgical procedure. 5. The older the age at initial operation and the more the displacement of femoral head, the results was less favorable. 6. As in young childhood, the clinical results of treatment are invariably better than the radiological results. 7. Overall final results of leg length discrepancy was 1.0cm in length and range of leg length discrepancy differs from type to type of surgical procedure. 8. Complications developed after treatment were avascular necrosis of femoral head in one case, fracture of the ipsilateral femure in 3 cases and wound infection in 1 case.

The Innominate Osteotomy in Congenital Dislocation of the Hip / 대한정형외과학회잡지

Beyond the usual age of walking, the dysplasia of dislocated hip has become severe and its reversivility limited so that the reduced hip cannot maintained in stable position. The innominate osteotomy redirect cartilage of the hip and provide stability in the functional position of walking. The author have experienced 45 cases out of 42 patients with congenital dislocation of the hip who were treated by innominate osteotomy at Department of Orthopedic Surgery College of Medicine Yonsei University from Jan. 1979 to Dec. 1986. The analysis of result of operation has been Jan. 1979 at least 18 months follw-up study. 1. The mean age was 4.2 years ranging fron 18 months to 14 years.2. The mean value of parameters in preoperative evaluation, acetabular index was 37°, neck shaft angle 146°, CE angle −64° and leg length discrepency 1.5cm. After operation, actabular index was 20°, neck shaft angle 137° and CE angle 39° in average. And operated limb was longer as 0.5cm in average. 3. By anatomical assessment of NcKay, 17 cases were graded excellent, 19 cases good, 7 cases fair and 2 cases poor. Especially among the patients above 6 years old, only 6 cases were graded excellent or good. 4. As to the post-operative complication, limitation of motion was noted in 4 cases, redislocation in 2 cases, subluxation in 1 cases, avascular necrosis of femoral head in 1 case and infection in 1 case.