痉挛型脑瘫儿童粗大运动功能分级与髋腰发育的关系

目的:探讨痉挛型脑瘫患儿粗大运动功能分级(gross motor function classification system,GMFCS)与髋关节、腰椎发育的关系。方法:回顾性分析2018年1月至2021年7月收治的125例痉挛型脑瘫患儿,男85例,女40例,年龄4~12(8.4±2.9)岁。依据GMFCS分为Ⅰ、Ⅱ、Ⅲ、Ⅳ级组。其中Ⅰ级组27例,Ⅱ级组40例,Ⅲ级组35例,Ⅳ级组23例。通过骨盆正位X线片,测量股骨头偏移百分比(migration percentage,MP)、中心边缘角(central edge angle,CE),颈干角(neck-shaft angle,NSA)、髋臼指数(acetabular index,AI),并选取其严重侧髋关节参数值分析,评价不同GMFCS分级与髋关节发育的关系。通过腰椎侧位X线片,测量腰椎矢状位Cobb角、腰骶角、腰椎前凸指数、弓顶距,评价不同GMFCS分级与腰椎发育的关系。结果:(1)119例痉挛型脑瘫患儿的骨盆正位X线片符合测量标准。Ⅰ-Ⅳ级4组MP分别为(22.72±3.88)、(26.53±4.36)、(33.84±4.99)、(49.54±7.87)%,两两比较差异均有统计学意义(P<0.05);4组CE分别为(30.10±6.99)°、(22.92±4.19)°、(17.91±5.50)°、(-0.70±17.33)°,两两比较差异均有统计学意义(P<0.05);4组AI分别为(16.41±2.77)°、(20.46±4.63)°、(23.76±5.10)°、(29.15±7.35)°,两两比较差异均有统计学意义(P<0.05);且GMFCS分级越高,MP和AI越大,CE越小。Ⅰ-Ⅳ级4组NSA分别为(142.74±10.03)°、(148.66±9.09)°、(151.66±10.52)°、(153.70±8.05)°,GMFCSⅠ级组与其余3组两两比较差异均有统计学意义(P<0.05),GMFCSⅠ级组NSA明显低于其他3组,其余组间两两比较差异均无统计学意义(P>0.05)。(2)88例痉挛型患儿的腰椎侧位X线片符合测量标准。Ⅰ-Ⅳ级4组腰椎矢状位Cobb角分别为(32.62±11.10)°、(29.86±9.90)°、(31.70±11.84)°、(39.69±6.80)°,GMFCSⅣ级腰椎矢状位Cobb角明显高于其余3组,两两比较差异均有统计学意义(P<0.05)。其余各组间两两比较差异均无统计学意义(P>0.05);4组腰骶角分别为(31.02±9.91)°、(26.57±9.41)°、(28.08±8.56)°、(27.31±11.50)°,两两比较差异均无统计学意义(P>0.05);4组腰椎前凸指数分别为(4.14±12.89)、(8.83±13.53)、(13.00±11.78)、(10.76±9.97)mm,两两比较差异均无统计学意义(P>0.05);4组弓顶距分别为(9.50±6.80)、(6.68±3.20)、(7.16±4.94)、(6.62±4.13)mm,两两比较差异均无统计学意义(P>0.05)。结论:(1)GMFCSⅠ-Ⅳ级患儿中,GMFCS分级越高,髋关节发育越差。(2)GMFCSⅢ-Ⅳ级患儿可能有更大风险出现腰椎前凸畸形。     

The effect of hip reconstruction on gross motor function levels in children with cerebral palsy

Objective

The aim of this study was to determine whether the hip reconstruction has an effect on gross motor function classification system (GMFCS) levels in patients with hip instability in cerebral palsy (CP).

The prognostic value of the head-shaft angle on hip displacement in children with cerebral palsy

BackgroundHip displacement is the second most common deformity in cerebral palsy (CP). The risk for hip displacement is related to the Gross Motor Function Classification System (GMFCS). Recently, the head-shaft angle (HSA) has been identified as a predictor for hip displacement and the aim of this study is to assess the predictive value of the HSA for hip displacement in CP.MethodsIn this retrospective cohort, we performed radiological measurements in 50 children on both hips. In children with GMFCS level II (30 hips), III (30 hips), IV (20 hips) and V (20 hips), we measured the HSA and migration percentage (MP) in three age intervals: age two years (T1), age four years (T2) and age seven years (T3).ResultsAt T1, the HSA was larger (more valgus) in hips that will displace than in hips that will not displace (174° vs. 166°; p = 0.001) and was also larger in higher GMFCS levels (IV–V vs. II–III) (172° vs. 165°; p < 0.001). At T1, GMFCS [odds ratio (OR) 14.7; p = 0.001] and HSA (OR 1.102; p = 0.043) were predictors for hip displacement at T3, but at T2, MP (OR 1.071; p = 0.010) was the only predictor for hip displacement at T3.ConclusionsThe HSA at two years is larger in hips that will displace and larger in children with higher GMFCS levels (IV–V). At age two years, GMFCS and HSA are valuable predictors for hip displacement, but at the age of four years, only MP should be used in the prediction of hip displacement.

Level of evidence

Prognostic study, level II.     

Hip surveillance and management of the displaced hip in cerebral palsy

Introduction

This article provides an overview of the management of a displaced hip in children with cerebral palsy and considers surveillance programmes, principles of surgical reconstruction and options for the salvage of an unreconstructable hip in these children.

Conclusion

Hip dislocation in CP is potentially preventable if children are included from an early age in a surveillance programme that includes repeat radiographic and clinical examinations, and preventive treatment for hips that are displacing. A surveillance programme should be based on the child’s age, GMFCS level and migration percentage (MP), and surgical prevention may be considered in children with a MP exceeding 33 %.     

Windswept hip deformity in children with cerebral palsy: a population-based prospective follow-up

Purpose

To analyze the development of windswept hip deformity (WS) in a total population of children with cerebral palsy (CP) up to 20 years of age, the association between WS and hip dislocation, and femoral varus osteotomy and scoliosis, and the impact of a hip surveillance program on the subsequent incidence of WS.

Methods

This is a prospective study on children with CP in southern Sweden included in the Swedish follow-up programme and registry for CP (CPUP). All children born between 1990 and 1995 with CP were included; those born between 1990 and 1991 did not partake in the hip surveillance program until they were older (3–5 years of age) and served as a historic control group. Children born between 1992 and 1995 were included in the hip surveillance program from about 2 years of age and constituted the study group.

Results

In the control group, 12 of 68 children (18 %) developed WS. In the study group of 139 children, 13 (9 %) developed WS (p = 0.071). Of all 25 children with WS, 21 also developed scoliosis and 5 developed a hip dislocation. The number of children with WS starting in the lower extremities was significantly lower in the study group (p = 0.028). No difference between the two groups was seen regarding WS that started in combination with scoliosis.

Conclusion

With early inclusion in a hip surveillance program and early treatment of contractures, it appears possible to reduce the frequency of WS starting in the lower extremities.

     

Hip Surveillance for Children with Cerebral Palsy: A Survey of Orthopaedic Surgeons in India

BackgroundThe purpose of this study was to assess Indian orthopaedic surgeons’ current practices and beliefs regarding hip surveillance for children with cerebral palsy (CP), to determine potential support for developing hip surveillance guidelines, and to identify knowledge gaps and key obstacles to guideline implementation in India.MethodsAn anonymous, cross-sectional online survey was sent to approximately 350 Paediatric Orthopaedic Society of India (POSI) members who were queried on their practices and beliefs about hip surveillance for children with CP, as well as perceived challenges and requirements for the successful implementation of hip surveillance guidelines in the Indian context.ResultsOut of 107 responses obtained from POSI members, almost all (96.2%) agreed that hip displacement requires standardized monitoring, using surveillance and surgery to prevent hip dislocation. Approximately half (51.5%) of respondents reported using existing hip surveillance guidelines, with most (41.2%) using the Australian guidelines. Almost all (97%) surgeons indicated that hip surveillance guidelines in India are needed, with 100% expressing interest in following guidelines specific to India. Respondents most frequently indicated late referrals to orthopaedics (81.2%), loss of patients to follow-up (78.2%), and lack of resources (43.6%) as challenges to successful hip surveillance in India. Perceived requirements for implementation included developing Indian-specific guidelines (83.2%) as well as educating surgeons (56.4%), physiotherapists/pediatricians (90.1%), and families (82.2%).ConclusionOrthopaedic surgeons practicing in India understand the importance of preventing hip dislocations in children with CP through hip surveillance and timely surgical intervention. The results demonstrated strong support for the development of hip surveillance guidelines designed specifically for the Indian healthcare system.Supplementary InformationThe online version contains supplementary material available at 10.1007/s43465-021-00432-3.     

Hip reconstruction is more painful than spine fusion in children with cerebral palsy

PurposeConcerns about pain control in patients with cerebral palsy (CP) are especially anxiety provoking for parents, given the fact that spasticity, communication issues, and postoperative muscle spasms are significant problems that make pain control difficult in these patients. A better understanding of the magnitude and quality of the pain these patients experience after our surgical procedures would better prepare the patients and their families. The purpose of this study is to quantify the amount of postoperative pain in children with CP undergoing hip reconstruction and spinal fusion. Specifically, the study will compare pain scores and the amount of narcotics used between the two groups.ResultsForty-two patients with CP who underwent hip reconstruction (mean age 8.8 years) were compared to 26 patients who underwent PSF (mean age 15.4 years). The total opioid used, normalized by body weight and by days length of stay (DLOS), in the hip group was 0.49 mg morphine/kg/DLOS, compared to 0.24 for the spine group (p = 0.014). The mean pain score for the hip group was 1.52, compared to 0.72 for the spine group (p = 0.013). There were no significant differences in the occurrence of adverse effects related to pain management between the two groups.ConclusionPatients with CP undergoing hip reconstruction surgery had significantly more pain, as exhibited by requiring more narcotics and having higher pain scores, than those patients undergoing PSF. The knowledge that hip reconstruction is more painful than PSF for patients with CP will better prepare families about what to expect in the postoperative period and will alert providers to supply better postoperative pain control in these patients.

Level of evidence

III (case control series).     

Radiographic threshold values for hip screening in cerebral palsy

Purpose To analyse the consequences of using different radiographic measurements and different threshold values for hip screening in children with cerebral palsy (CP). Methods In a total sample of children with CP a standardised radiological follow-up of the hips was carried out as a part of a hip prevention programme. Acetabular index (AI) and migration percentage (MP) were measured on all radiographs. In this study, 1,067 radiographs of 272 children born 1992–1998 were analysed. Results Lateral displacement of the femoral head was common without acetabular dysplasia, and acetabular dysplasia occurred at a later stage than femoral head lateralisation. Hip dysplasia without lateral displacement of the femoral head was rare. In 16 of the 56 hips (29%) with AI ≥ 27° and in 23 of the 71 (32%) hips with MP ≥ 33% the values decreased below the threshold value without operative treatment. In hips with AI ≥ 30° only 2 of 31 hips (6%) and in hips with MP ≥ 40% only 5 of 44 hips (11%) decreased below the threshold values without operative treatment. Conclusions Radiographic follow-up with only measurement of the MP seems sufficient in screening for dislocation in children with CP. MP ≥ 33% is recommended as threshold for reaction or intensified observation. In children with MP ≥ 40%, the lateral displacement increased over time in most hips, thus indicating the need for operative intervention. In children with MP 33–40%, treatment should be based on other clinical signs and the progression of MP over time.     

Neurogenic hip dislocation in cerebral palsy: quality of life and results after hip reconstruction

Background At birth, no difference exists between the hips of children with spastic cerebral palsy and the hips of other children. The typical pathologic deformities of the hips in children with spastic cerebral palsy develop as the child gets older. One of our goals was to evaluate the change in quality of life of children with cerebral palsy after hip reconstruction. For classification of the children’s condition, we assessed sitting and standing abilities and used the Gross Motor Function Classification System. To evaluate the effect of hip dislocation on the spine, we assessed symmetry while the patient was lying down, sitting, and standing. Methods The results of surgical reconstruction of hip joints in 54 patients with severe cerebral palsy who had 66 severely subluxated or dislocated hip joints were retrospectively analyzed. The study was based on a research questionnaire with a mean follow-up of 4 years 10 months. The purpose of the questionnaire was to evaluate the pain, functional abilities, symmetry, and independence of the patients by using the modified Barthel index. Results Pain was fully relieved in 62 and was eased in 35% of preoperatively painful hips. The functional abilities of sitting and standing were not influenced statistically significantly by the operation. An improvement in sitting symmetry was observed in 40% and improvement in lying symmetry was observed in 32% of the patients. The mean center-edge angle improved from −24.9° ± 39° (mean ± standard deviation) to 25.9° ± 14°. The acetabular index improved from 30.2° ± 8° to 17.1° ± 7°. Conclusions The independence of the patients, based on the modified Barthel index, did not change significantly after surgery. Most improvements in quality of life were observed in those patients who had pain in the hip before the operation as a result of reduction of pain and improved mobility of the hip. Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Short-term results of musculotendinous release for paralytic hip subluxation in children with spastic cerebral palsy

INTRODUCTION

Children with paralytic hip subluxation secondary to spastic cerebral palsy were treated with a standard protocol that depended on early detection of the subluxation using clinical examination detecting limited range of hip abduction of ≤ 30° and anteroposterior pelvis radiographs detecting subluxation ≥ 33% migration as indications.

PATIENTS AND METHODS

Patients underwent open adductor longus, proximal gracilis and proximal rectus femoris myotomy, and iliopsoas lengthening with immediate postoperative immobilisation in abduction bar for 3 weeks followed by physiotherapy. The protocol was applied to 50 children with a mean age of 3.6 years with 100 hips surgically corrected. Of these hips initially, 52% were mildly subluxated with ≤ 33% migration, 42% were moderately subluxated with > 33–66% migration, and 6% were severely subluxated with > 66% migration.

RESULTS

At a final postoperative follow-up of at least 24 months, 22% of these hips were classified as excellent with full containment and no migration, 54% were good with < 20% migration, and 24% were fair with 20–25% migration. No poor result with > 25% migration was obtained. No child developed an abduction contracture or wide-based gait that required treatment.

CONCLUSIONS

Early detection and application of this treatment algorithm for children with spastic hip disease should have satisfactory outcomes. Longer follow-up will be required to determine how many children will need bony reconstruction to maintain stable containment of hips at maturity.     

Risk factors for hip displacement in cerebral palsy: A population-based study of 121 nonambulatory children

Purpose:The aim was to evaluate which clinical and radiographic variables are independent (true) risk factors for hip subluxation in nonambulatory children below 5 years of age with cerebral palsy.Methods:Patients were recruited from a population-based hip surveillance program. Inclusion criteria were birth during 2002–2006, age below 5 years, and gross motor function classification system levels III–V. In all, 121 children (71 boys) met these criteria. Gross motor function classification system was level III in 29 patients, level IV in 28, and level V in 64. Anteroposterior radiographs at diagnosis and during follow-up were assessed, and only the worst hip of each patient was used for the analyses. The mean age at the initial radiograph was 2.5 years (range: 0.7–4.9 years), and the mean follow-up time was 4.0 years (range: 0.5–11.8 years).Results:At the last follow-up, 67 children had a clinically significant hip displacement, defined as migration percentage ≥40%. Univariable regression analysis defined these risk factors: gross motor function classification system level V, spastic bilateral cerebral palsy, initial migration percentage, yearly rate of migration percentage progression, and initial acetabular index. When these variables were analyzed with multivariable regression in 107 patients with initial migration percentage <50% and follow-up ≥1.0 year, the independent risk factors were initial migration percentage (p = 0.003) and yearly rate of migration percentage progression (p < 0.001).Conclusion:The parameters that need to be assessed in hip surveillance in children below 5 years of age are initial migration percentage and rate of migration percentage progression. Acetabular index and femoral head–shaft angle might be useful later for decision-making regarding choice of treatment.Level of evidence:Level II, development of diagnostic criteria.     

选择性脊神经后根切断术对脑瘫患儿膀胱功能的影响

目的：探讨功能性选择性脊神经后根切除术,（F－SPR）对脑瘫儿童膀胱功能的影响,方法：本组病例为行F－SPR的脑瘫儿童97例,术前1周和术后6个月行膀胱平均功能容量（AFBV）测定和尿液动力学检查。结果：痉挛型脑瘫术前下尿路症状（LUTS）发生率为34．24％,混合型发生率为58．33％;术后分别下降至20．54％和29．165。尿流动力学检查36例中术前26例（72．22％存在尿流动力学指标异常,其中18例（69．23％）无临床症状,AFBV和尿流动力学指标术后改善明显,I2－S1节段SPR较L5－S1节段SPR改善明显。结论：约50％脑瘫儿童合并有临床静止性膀胱功能障碍。F－SPR在有效缓解下肢痉挛的同时,可改善膀胱贮尿功能,减少上尿道并发症。     

Risk factors and complications in hip reconstruction for nonambulatory patients with cerebral palsy

Background

Hip dysplasia is prevalent in nonambulatory children with cerebral palsy, and may contribute to a decreased quality of life (Lonstein in J Pediatr Orthop 6:521–526, 1). Reconstructive procedures such as a femoral varus derotation osteotomy with or without a pelvic osteotomy are commonly employed with the goal of achieving and maintaining well reduced hips.

Purposes

The goals of this study are both to characterize the complications of reconstructive procedures and to identify risk factors that may contribute to these complications.

Patients and methods

A retrospective analysis was conducted among 61 nonambulatory children (93 hips) with cerebral palsy who underwent a femoral varus derotation osteotomy, with or without an open reduction and/or pelvic osteotomy, from 1992 through 2008 at our institution. The average patient age was 8.1 years (2.6–14.7) and the mean follow-up time was 5.9 years (2.1–15.9).

Results

The cumulative complication rate per patient including failures to cure was 47.6 %. Spica casting was found to be a risk factor for all complications (P = 0.023); whereas patients younger than 6 years old (P = 0.013) and children with a tracheostomy (P = 0.004) were found to be risk factors for resubluxation following surgery.

Conclusions

Although reported complication rates of hip reconstructive procedures performed upon children with cerebral palsy have varied considerably, those with more severe disease have experienced more complications. We report our tertiary referral center’s complication rate and our institutional experiences with risk factors for complications and failures to cure.

Level of evidence

IV, Retrospective case series.     

The anatomy of the dysplastic hip in cerebral palsy related to prognosis and treatment

Summary The development of dysplasia of the hip in cerebral palsy has been studied in 292 hips in children. The rate of migration of the hip has been defined, and gave a very early indication of the prognosis for the dysplasia. A close relationship was also found between the early radiographic changes and the functional locomotor anatomy. By reviewing the initial radiographs the need for early treatment and its adaptation to the future locomotor potential of the child can be assessed. Treatment is usually by musculotendinous releases and is especially effective in early recentring of the femoral head, but this method is ineffective in correcting bone dysplasia, particularly acetabular obliquity, which starts at around the age of 30 months. It is preferable to anticipate its development by early tenotomies which are much better tolerated than pelvic osteotomy in spastic children.

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Résumé L'évolution de la dysplasie de hanche chez l'infirme moteur cérébral est étudiée à partir de 292 cas.Cette étude permet de préciser la vitesse de migration de la hanche, ce qui autorise à formuler très tôt dans l'évolution dysplasique un pronostic anatomique. L'analyse des signes radiologiques précoces de la dysplasie en fonction de l'autonomie locomotrice de l'enfant dégage un remarquable parallélisme anatomofonctionnel.Ainsi, l'analyse des premières images radiographiques permet tout à la fois une prévision anatomique et une prévision fonctionnelle, autorisant un traitement précoce et adapté aux futures conditions de vie de l'enfant.Ce traitement doit être étiologique, basé sur les libérations musculo-tendineuses. Il est surtout efficace sur le recentrage coxofémoral et cela d'autant plus qu'il est réalisé plus précocément. Ces ténotomies sont au contraire peu efficaces sur la dysplasie osseuse, notamment sur l'obliquité cotyloödienne. Or, celle-ci débute vers 30 mois. Mieux vaut donc prévenir sa survenue par des ténotomies précoces et toujours bien tolérées plutôt que de la corriger par ostéotomie pelvienne, moins bien supportée par ces enfants fragiles.

     

Treatment of femur fractures in children with cerebral palsy

Purpose  Children with cerebral palsy may have low bone density stemming from various etiologies and are, thereby, at risk for fractures. The treatment of femur fractures in children with cerebral palsy may need to be tailored to address the management of spastic muscle tone and multiple medical co-morbidities. Methods  Our study is a retrospective review that evaluates the treatment of 47 femur fractures in children with cerebral palsy in both ambulatory and non-ambulatory patients. Results  Thirty-two fractures in non-ambulators were treated non-operatively, 11 of which resulted in malunions and five developed pressure sores. Six fractures in non-ambulators were treated operatively, one of which resulted in a malunion. In ambulators, five fractures were treated non-operatively; one of these fractures lost reduction after 2 weeks and required surgical intervention. One of four fractures in ambulators treated operatively developed a malunion. Conclusion  Our study results suggest that femur fractures in children with cerebral palsy can be treated non-operatively; however, because of the high risk of malunion in this patient population, fracture alignment needs to be followed closely during healing. Careful attention during casting is necessary to prevent pressure sores. Strong consideration should be given to initial operative treatment in ambulatory patients in order to preserve function.     

The anteromedial approach to the psoas tendon in patients with cerebral palsy

Purpose Release of the psoas tendon for flexion deformity of the hip in children with cerebral palsy has traditionally been performed at the pelvic brim, lateral to the neurovascular bundle, or at its insertion into the lesser trochanter. As the psoas tendon is lateral to the pectineus, the traditional exposure of the tendon through an approach medial to the pectineus is limited by the extent to which the pectineus can be retracted proximally. Technical note We describe the use of the anteromedial approach used for the developmentally dislocated hip to expose the psoas tendon between the pectineus and the neurovascular bundle. This provides a much better visualisation of the tendon as it crosses the superior pubic ramus to its insertion. The use of this approach has not been described in cerebral palsy.     

Unilateral varus osteotomy of the proximal femur in children with cerebral palsy: a five-year follow-up of the development of both hips

Background  

Varus osteotomy of the proximal femur (VOPF) is one treatment option to prevent hip dislocation in children with cerebral palsy (CP). It is questioned whether the osteotomy should be performed in the displaced hip only, or if it should be performed bilaterally to prevent later displacement of the contralateral hip. CPUP is a register and healthcare programme for children with CP that was initiated in 1994 in southern Sweden. In the programme, range-of-motion and radiographic examination of the hips is performed regularly. These data have been analysed preoperatively and for 5 years postoperatively in children treated with unilateral VOPF.     

A balanced approach for stable hips in children with cerebral palsy: a combination of moderate VDRO and pelvic osteotomy

Background

Hip reconstructive surgery in cerebral palsy (CP) patients necessitates either femoral varus derotational osteotomy (VDRO) or pelvic osteotomy, or both. The purpose of this study is to review the results of a moderate varisation [planned neck shaft angle (NSA) of 130°] in combination with pelvic osteotomy for a consecutive series of patients.

Methods

Patients with CP who had been treated at our institution for hip dysplasia, subluxation or dislocation with VDRO in combination with pelvic osteotomy between 2005 and 2010 were reviewed.

Results

Forty patients with a mean follow-up of 5.4 years were included. The mean age at the time of operation was 8.9 years. The majority were non-ambulant children [GMFCS I–III: n = 11 (27.5 %); GMFCS IV–V: n = 29 (72.5 %)]. In total, 57 hips were treated with both femoral and pelvic osteotomy. The mean pre-operative NSA angle of 152.3° was reduced to 132.6° post-operatively. Additional adductor tenotomy was performed in nine hips (16 %) at initial operation. Reimers’ migration percentage (MP) was improved from 63.6 % pre-operatively to 2.7 % post-operatively and showed a mean of 9.7 % at the final review. The results were good in 96.5 % (n = 55) with centred, stable hips (MP <33 %), fair in one with a subluxated hip (MP 42 %) and poor in one requiring revision pelvic osteotomy for ventral instability.

Conclusions

This approach maintains good hip abduction and reduces soft-tissue surgery. Moderate varisation in VDRO in combination with pelvic osteotomy leads to good mid-term results with stable, pain-free hips, even in patients with severe spastic quadriplegia.