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Background: Stiff gait resulting from rectus femoris dysfunction in cerebral palsy commonly is treated by distal rectus femoris transfer (DRFT), but varying outcomes have been reported. Proximal rectus femoris release was found to be less effective compared with DRFT. No study to our knowledge has investigated the effects of the combination of both procedures on gait.Questions/purposes: We sought to determine whether an additional proximal rectus release affects knee and pelvic kinematics when done in combination with DRFT; specifically, we sought to compare outcomes using the (1) range of knee flexion in swing phase, (2) knee flexion velocity and (3) peak knee flexion in swing phase, and (4) spatiotemporal parameters between patients treated with DRFT, with or without proximal rectus release. Furthermore the effects on (5) anterior pelvic tilt in both groups were compared.Methods: Twenty patients with spastic bilateral cerebral palsy treated with DRFT and proximal rectus femoris release were matched with 20 patients in whom only DRFT was performed. Standardized three-dimensional gait analysis was done before surgery, at 1 year after surgery, and at a mean of 9 years after surgery. Basic statistics were done to compare the outcome of both groups.Results: The peak knee flexion in swing was slightly increased in both groups 1 year after surgery, but was not different between groups. Although there was a slight but not significant decrease found the group with DRFT only, there was no significant difference at long-term followup between the groups. Timing of peak knee flexion, range of knee flexion, and knee flexion velocity improved significantly in both groups, and in both groups a slight deterioration was seen with time; there were no differences in these parameters between the groups at any point, however. There were no group differences in spatiotemporal parameters at any time. There were no significant differences in the long-term development of anterior pelvic tilt between the groups.Conclusions: The results of our study indicate that the short- and long-term influences of adding proximal rectus femoris release on the kinematic effects of DRFT and on pelvic tilt in children with cerebral palsy are negligible.Level Of Evidence: Level III, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence. [ABSTRACT FROM AUTHOR]

Background: With cerebral palsy (CP), an equinus deformity may lead to genu recurvatum. Botulinum toxin A (BtA) injection into the calf muscles is a well-accepted treatment for dynamic equinus deformity. Questions/purposes: The purpose of this study was to determine whether BtA injections into the calf muscles to decrease equinus would decrease coexisting genu recurvatum in children with diplegic CP. Methods: In a retrospective study, 13 children (mean age, 5 years) with spastic diplegic CP showing equinus and coexisting primary genu recurvatum, who were treated with BtA injections into the calf muscles, were included. Evaluations were done before and 6 and 18 weeks after intervention using three-dimensional gait analysis and clinical examinations according to a standardized protocol. Basic statistical analyses (power analysis, ANOVA) were performed to compare genu recurvatum before treatment and at 6 and 18 weeks after injection with BtA. Results: During stance phase, maximum ankle dorsiflexion was increased substantially from −3.0° ± 14.3° before to 6.2° ± 14.2° 6 weeks after the injections. Despite this, with the numbers available, the amount of recurvatum in stance did not improve with treatment at either 6 or 18 weeks. There was significant improvement of knee hyperextension during stance phase of 6.2° between baseline and 18 weeks after BtA injection, but a genu recurvatum was still present in most patients. Conclusions: Despite improvement of ankle dorsiflexion after injection with BtA, genu recurvatum did not show relevant improvement at 6 or 18 weeks after injection with the numbers available. Because knee hyperextension remained in most patients, other factors leading to genu recurvatum should be taken into consideration. In addition, a botulinum toxin-induced weakness of the gastrocnemius may explain why recurvatum gait was not significantly reduced. Level of Evidence: Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence. [ABSTRACT FROM AUTHOR]

Background: Equinus of the foot at the ankle is one of the most common deformities in patients with spastic diplegic cerebral palsy, leading to gait disturbances and secondary deformities. During single-event multilevel surgery, equinus is commonly corrected by calf muscle lengthening, such as gastrocnemius-soleus intramuscular aponeurotic recession. Various studies have described satisfactory short-term results after gastrocnemius-soleus intramuscular aponeurotic recession. However, there is no evidence for maintenance of equinus correction because of the small and heterogeneous case series and short follow-up time previously reported. Methods: The present study provides long-term results after gastrocnemius-soleus intramuscular aponeurotic recession as a part of multilevel surgery for the treatment of equinus in forty-four patients with spastic diplegia who were able to walk (forty-eight legs had lengthening of the gastrocnemius and thirty-four legs had lengthening of the gastrocnemius and soleus). Standardized three-dimensional gait analysis and clinical examination were done preoperatively and at one year, a mean (and standard deviation) of 3 ± 1 years, and a mean of 9 ± 2 years after surgery. Results: Significant improvements in kinematic and kinetic ankle parameters on gait analysis as well as passive dorsiflexion in clinical examination were found one year after surgery. While there was a significant loss of passive dorsiflexion at the time of long-term follow-up, the improvements in gait analysis parameters were maintained. The endurance of gait improvements was accompanied by a persistent increase of dorsiflexor muscle strength without relevant loss of plantar flexor strength. Although it was not significant, there was a tendency for deterioration of gait analysis parameters over the nine years. The analysis of individual patterns showed recurrence of equinus at the ankle in 24% of the legs. Early-onset calcaneal gait was found one year after surgery in seven legs (9%), but without secondary crouch gait, and there was recovery at the time of the long-term follow-up. Late-onset calcaneal gait was seen at the time of long-term follow-up in eight legs (10%), of which four had an accompanying crouch gait. Conclusions: Gastrocnemius-soleus intramuscular aponeurotic recession as a part of multilevel surgery leads to sat-isfactory correction of mild and moderate equinus deformity in children and adolescents with spastic diplegia without relevant risk for overcorrection and should be preferred over Achilles tendon lengthening to avoid overlengthening. The long-term results in the present study demonstrate that the improvements are long-lasting on average, but individual patients tend to develop recurrence and may need secondary gastrocnemius-soleus intramuscular aponeurotic recession. [ABSTRACT FROM AUTHOR]

Abstract: The evidence in support of distal rectus femoris transfer (DRFT) as part of single-event multilevel surgery (SEMLS) is limited due to inconsistent outcome reports and a lack of randomized studies. The purpose of this prospective randomized trial was to establish whether the results of SEMLS without DRFT are similar to those of a conventional approach that includes DRFT in the SEMLS. In all, 32 children with spastic diplegia (GMFCS I–III) and an indication for DRFT were recruited and randomized into a DRFT (15 children) and a NON-DRFT group (17 children) using a minimization method. During SEMLS, bilateral DRFT was performed only in the DRFT group. Three-dimensional gait analysis and clinical examination were performed before and 1year after surgery. In both groups a significant increase in range of motion during swing and knee flexion velocity were found, which was significantly higher in the DRFT group. While peak knee flexion in swing (pKFSw) was preserved in the DRFT group and significantly decreased in the NON-DRFT group, pKFSw timing was significantly earlier in both groups. The clinical relevance of the higher overall benefits in the DRFT group is limited, considering that 33% of patients in this group did not benefit from the procedure. Furthermore, 53% of the NON-DRFT patients did not undergo what proved to be an unnecessary DRFT. Subgroup analysis showed benefits for patients with decreased pKFSw, while those with severe flexed-knee gait (normal or increased pKFSw) did not profit from DRFT. This may explain the inconsistent overall results, and DRFT is therefore not recommended as a “prophylactic” procedure in patients with severe flexed-knee gait. [Copyright &y& Elsevier]