Purpose of Study. In children with spastic diplegia, surgery for equinus has a high incidence of both over and under correction. We wished to determine if conservative (mainly Zone 1) surgery for equinus gait, in the context of multilevel surgery, could result in the avoidance of calcaneus and crouch gait as well as an acceptable rate of recurrent equinus, at medium term follow-up. Description of Methods. This was a retrospective, consecutive cohort study of children with spastic diplegia, between 1996 and 2006. All children had distal gastrocnemius recession or differential gastrocsoleus lengthening, on one or both sides, as part of Single Event Multilevel Surgery. The primary outcome measures were the Gait Variable Scores (GVS) and Gait Profile Score (GPS) at two time points after surgery. Summary of Results. Forty children with spastic diplegia, GMFCS Level II and III were eligible for inclusion in this study. There were 25 boys and 15 girls, mean age 10 years at surgery. The mean age at final follow-up was 17 years and the mean postoperative follow-up period was seven years. The mean ankle GVS improved from 18.5° before surgery to 8.7° at short term follow-up (P<0.005) and 7.8° at medium term follow-up.
1. Correction of equinus deformity in cerebral palsy either by elongation of the tendo calcaneus or by gastrocnemius recession gives satisfactory results without splintage or bracing after operation. 2. Gastrocnemius recession is the operation of choice in paraplegic spastic cerebral palsy, and wherever possible in tetraplegic cerebral palsy. In hemiplegia the whole of the triceps surae is usually involved, and elongation of the tendo calcaneus is almost always needed. 3. Correction at operation should aim to result in a mild degree of equinus deformity at the end of the growth period in hemiplegic spastic cerebral palsy. Over-enthusiastic gastrocnemius recession can lead to excessive weakness of the calf in some patients.
The results of the Baumann procedure (intramuscular lengthening of the gastrocnemius and soleus in the proximal part of the muscle) for correction of fixed gastrosoleus contracture in diplegic children are presented. Eleven ambulatory children with diplegic type of cerebral palsy (mean age: 10 years) were operated for correction of fixed gastrosoleus contracture by the Baumann procedure as part of a multi-level, single-session surgery for gait improvement. Evaluation included clinical examination and gait analysis. Mean follow-up after surgery was 2.7 years. Clinical examination demonstrated significant improvements in active and passive ankle dorsal flexion with maintenance of ankle plantar flexor power. Ankle kinematics showed an increase in the dorsal flexion at initial contact, an average angle in single limb support, and maximum dorsal flexion in swing. Although there was an increase in dorsal flexion at the beginning of push-off, the total range of motion during push-off was not affected. Ankle movement demonstrated better loading in stance, manifested by significant improvement in maximum flexor movement in the second half of single stance. Post-operatively there was a change from abnormal generation of energy to normal energy absorption in mid-stance. Positive action during pushoff was significantly increased. It is known that the growth of muscle occurs at its musculo-tendinous junction. Anatomic and simulation studies have demonstrated differences in the muscle fasicle length and pennation angles. With the Baumann procedure, an intramuscular lengthening gives the best chance for functional adaptation in the muscle. When needed, the soleus can also be lengthened. Multiple incisions permit stretching of the muscle fibres even in severe deformities.
Joint deformity secondary to extensive haemangiomatous involvement of the soft tissues has been well described and is easy to diagnose. If the haemangioma is small, localised and within the belly of a muscle the diagnosis is more difficult. In equinus deformity of obscure aetiology localised calf tenderness may be the only diagnostic sign. Three children with equinus deformity caused by a small haemangioma in the calf muscles were treated by simple excision with satisfactory results.
To assess use of Taylor Spatial Frame to correct posttraumatic equinus contracture of ankle by soft tissue distraction. Description of a successful technique. We have treated five cases of severe and resistant equinus contracture (20–30 degrees) between 2005 and 2010. All cases resulted from severe soft tissue injury and compartment syndrome of affected limb. They had undergone prolonged treatment for open fracture of tibia prior to referral to our institute and failed to respond to at least six months of aggressive physiotherapy. In all cases fractures did not involve ankle articular surface and all tibial fractures had united. Three out five cases also had associated peroneal nerve palsy. Our procedure included Tendo Achilles Lengthening, ankle and subtalar capsulotomy and application of two-ring Taylor Spatial Frame. We used long bone module to correct the deformity gradually. All deformities were over corrected by 5–10% to prevent recurrence. We successfully corrected equinus deformity in all cases. Follow up ranged from three months to five years and we found no recurrence. Patients with peroneal palsy were provided with Ankle Foot Orthosis (AFO).Purpose of the study
Methods and end results
The functional objectives (walking for 31 patients, verticalisation for ten, comfort for one) were achieved in all patients except five. There was one taluseversus, one anterior subluxation of the talus, one persistent stepping. For two patients underlying neurological disorders did not allow fulfilment of the contract. There were also three cases of claw toes with moderate functional impact.
To evaluate the outcome of combined tibialis anterior tendon shortening (TATS) and calf muscle-tendon lengthening (CMTL) in spastic equinus. Prospectively collected data was analysed in 26 patients with hemiplegic (n=13) and diplegic (n=13) cerebral palsy (CP) (GMFCS level I or II, 14 males, 12 females, age range 10–35 years; mean 16.8 years). None had received botulinum toxin A injections or surgery in the preceding six and 12 months respectively. All patients had pre-operative 3D gait analysis and a further analysis at a mean of 17.1 months (± 5.6months) after surgery. None was lost to follow-up. Twenty-eight combined TATS and CMTL were undertaken and 19 nineteen patients had additional synchronous multilevel surgery. At follow-up 79% of patients had improved foot positioning at initial contact. Statistically significant improvements were seen in the Movement Analysis Profile for ankle dorsi-/plantarflexion (4.25, p=0.032), maximum ankle dorsiflexion during swing phase (11.68°, p<0.001), and Edinburgh Visual Gait Score (EVGS) (4.85, p=0.014). Diplegic patients had a greater improvement in the EVGS than hemiplegics (6.27 -vs- 2.21, p = 0.024). The originators of combined TATS and CMTL showed that it improved foot positioning during gait. The present study has independently confirmed favourable outcomes in a similar patient population and added additional outcome measures, the EVGS, foot positioning at initial contact, and maximum ankle dorsiflexion during swing phase. Study limitations include short term follow-up in a heterogeneous population and that 19 patients had additional surgery. However, distinguishing between the natural history of CP and interventions and isolating the effects of one intervention from others in multilevel surgery are well recognised difficulties in cohort studies in CP. TATS combined with CMTL is a recommended option for spastic equinus in ambulatory patients with CP.
Patients with hemiplegic cerebral palsy walk with a well recognised characteristic gait pattern. They also commonly have a significant leg length discrepancy which is less well appreciated. The typical equinus gait in these patients is assumed to be an integral part of the disease process of spasticity and a tendency to develop joint contractures. However an alternative explanation for the presence of an equinus deformity may be that it is a response to the development of a significant leg length discrepancy in these patients. The development of such an equinus deformity would have the effect of functionally lengthening the short hemiplegic leg. We set up a study to examine the correlation between leg length discrepancy and equinus deformity. We reviewed the gait analyses and clinical examinations of 183 patients with hemiplegic cerebral palsy. While 22% had no significant leg length discrepancy, 65% had a measured discrepancy of greater than 1cm. There was a linear correlation between age and limb length discrepancy. We also found that there was a linear relationship between leg length discrepancy and ankle equinus at the point of ground contact. We propose that the equinus deformity seen in the hemiplegic cerebral palsy patient is multifactorial and is related not only to the disease state but also to the presence of leg length discrepancy. The equinus deformity functionally lengthens the short hemiplegic leg. Indeed it may represent an attempt by these patients to functionally equalise their leg lengths. This factor must be taken into account when considering correction of an equinus deformity in patients with hemiplegic cerebral palsy in order to avoid either recurrence of the deformity or the production of functionally unequal leg lengths. We have also highlighted the presence of significant shortening of the hemiplegic leg in these patients.
Serial casting (SC) and Botulinum toxin-A (Btx-A) have been used to treat ankle equinus contractures in cerebral palsy. Previous studies that examined the effects of combining Btx-A injections with SC and either one of the treatments alone in terms of passive ankle range of motion (PROM) have shown mixed results [two-four]. Therefore, the goal of this study is to examine PROM and gait characteristics in children with CP who have undergone SC, either with or without Btx-A injections to the plantarflexors. Patients who underwent SC +/− Btx-A injections were evaluated for improvement in PROM at the end of treatment. The participants’ age at beginning of SC treatment, Gross Motor Function Classification System (GMFCS) level, treatment duration, PROM, and gait characteristics observed by the treating physiotherapist were obtained from the charts. Only one side per treatment is included in this study (treated side for unilateral treatments, randomly chosen side for bilateral treatments). Table One shows the characteristics of the two groups. Independent samples t-tests showed that the two groups are similar in terms of age, treatment duration and pre PROM. A repeated measures ANCOVA, using the pre- and post- treatment range of motion as the within subject variables, treatment type as the between subject variable, and GMFCS and age as the covariates showed that the PROM changed significantly regardless of treatment type (p<
0.001). However, the treatment type does not influence the outcome (p=0.411). The changes in range of motion obtained from the two types of treatments were not significantly different using the independent t-test (p=0.957). Based on these results, it appears that both types of interventions resulted in significant changes in ankle passive range of motion, which is in agreement with Kay et al [4]. Similar ranges of motion at the end of the treatment were obtained from both treatments, and the treatments have similar success rates. Future work is needed to further explore the outcomes associated with serial casting only and Btx-A and serial casting treatments
Lengthening of the conjoined tendon of the gastrocnemius
aponeurosis and soleus fascia is frequently used in the treatment
of equinus deformities in children and adults. The Vulpius procedure
as described in most orthopaedic texts is a division of the conjoined
tendon in the shape of an inverted V. However, transverse division
was also described by Vulpius and Stoffel, and has been reported
in some clinical studies. We studied the anatomy and biomechanics of transverse division
of the conjoined tendon in 12 human cadavers (24 legs). Transverse
division of the conjoined tendon resulted in predictable, controlled
lengthening of the gastrocsoleus muscle-tendon unit. The lengthening
achieved was dependent both on the level of the cut in the conjoined
tendon and division of the midline raphé. Division at a proximal
level resulted in a mean lengthening of 15.2 mm ( Cite this article:
Although equinus gait is the most common abnormality
in children with spastic cerebral palsy (CP) there is no consistency
in recommendations for treatment, and evidence for best practice
is lacking. The Baumann procedure allows selective fractional lengthening
of the gastrocnemii and soleus muscles but the long-term outcome
is not known. We followed a group of 18 children (21 limbs) with
diplegic CP for ten years using three-dimensional instrumented gait
analysis. The kinematic parameters of the ankle joint improved significantly
following this procedure and were maintained until the end of follow-up.
We observed a normalisation of the timing of the key kinematic and
kinetic parameters, and an increase in the maximum generation of
power of the ankle. There was a low rate of overcorrection (9.5%,
n = 2), and a rate of recurrent equinus similar to that found with
other techniques (23.8%, n = 5). As the procedure does not impair the muscle architecture, and
allows for selective correction of the contracted gastrocnemii and
soleus, it may be recommended as the preferred method for correction
of a mild fixed equinus deformity.
We present the results of ankle fusion using the Ilizarov technique for bone loss around the ankle in 20 patients. All except one had sustained post-traumatic bone loss. Infection was present in 17. The mean age was 33.1 years (7 to 71). The mean size of the defect was 3.98 cm (1.5 to 12) and associated limb shortening before the index procedure varied from 1 cm to 5 cm. The mean time in the external fixator was 335 days (42 to 870). Tibiotalar fusion was performed in 19 patients and tibiocalcaneal fusion in one. Associated problems included diabetes in one patient, pelvic and urethral injury in one, visual injury in one patient and ipsilateral tibial fracture in five. At the final mean follow-up of 51.55 months (24 to 121) fusion had been achieved in 19 of 20 patients. A total of 16 patients were able to return to work. The results were graded as good in 11 patients, fair in six and poor in three. The mean external fixation index was 8.8 days/mm (0 to 30). One patient with diabetes developed severe infection which required early removal of the fixator. Refractures occurred in three patients, two of which were at the site of fusion and one at a previous tibial shaft fracture site.
Introduction. The goal of arthrodesis around the ankle or of triple (hind foot) arthrodesis is a painless, plantigrade, and stable foot. Stress fracture is a differential diagnosis for pain following an ankle/subtalar arthrodesis. Management of stress fractures following sound ankle/subtalar fusion is extremely difficult as the entire movement tends to occur at the fracture site, hence hampering healing. Methods and materials. 33 patients underwent ankle/subtalar arthrodesis at our institute from 2000-2008. The average age of the patients was 69 years and the male: female ratio was 2:1. The minimum follow-up was for one year. Although there were some variations in technique, all the arthrodesis were performed by removal of articular cartilage, bone grafting of any defects and rigid internal fixation. Results. 2/33 patients developed a stress fracture of the distal tibia following successful ankle/subtalar fusion. An angle of ankle/subtalar fusion showed an average of 0 degrees +/− 3 degrees in the sagital plane, except for the two cases that developed the stress fracture. The angles in these cases were 13 and 11 degrees. The stress fractures occurred proximal to the level of the previous arthrodesis internal fixation devices (arthrodesis nail/cancellous screws). Intramedullary and extramedullary devices were utilised to obtain union across the stress fracture sites, without success. Discussion.
Posterior malleolar (PM) fractures are commonly associated with ankle fractures, pilon fractures, and to a lesser extent tibial shaft fractures. The tibialis posterior (TP) tendon entrapment is a rare complication associated with PM fractures. If undiagnosed, TP entrapment is associated with complications, ranging from reduced range of ankle movement to instability and pes planus deformities, which require further surgeries including radical treatments such as arthrodesis. The inclusion criteria applied in PubMed, Scopus, and Medline database searches were: all adult studies published between 2012 and 2022; and studies written in English. Outcome of TP entrapment in patients with ankle injuries was assessed by two reviewers independently.Aims
Methods
To review the results of limb lengthening and deformity correction in fibular hemimelia, fifty-five patients with fibular hemimelia underwent limb reconstruction at Sheffield Children’s Hospital. According to Achter-man and Kalamchi classification, twenty-six were classified as Type IA, six as Type IB and twenty-three as Type II fibular hemimelia. All patients had at least some shortening of ipsilateral femur but forty-nine had sig-nificant femoral deficiency. Lengthening of tibia and in significant cases femur was done using De Bastiani or Vilarrubias or Ilizarov methods. Ankle valgus and heel valgus were corrected through osteotomies either in the supramalleolar region or heel.
Seven children, aged four to nine years, underwent fibular transfer between 1990 and 2002. Five had chronic osteomyelitis and two had septic compound fractures. Bone defects measured 5 cm to 20 cm. Reconstruction was performed in two stages. Debridement, sequestrectomy, and Gentamycin bead insertion were performed first. Two children required skin grafting and one a gastrocnemius flap. Fibular transfer was performed as a second stage at four to six weeks, when infection was cleared. Through an anterolateral approach the fibula was divided proximally below the physis and transferred from the lateral to the anterior compartment deep to the tibialis anterior muscle belly. The fibula was fixed with screws to the lateral tibial metaphysis in two children, and placed into the medullary canal and fixed with wires in four. Distal procedures were performed in five children. Patients were immobilised in a cast for three to six months until bone healing occurred, after which the bone was supported with a calliper. Follow-up ranged from 11 months to 13 years. All transfers united to the proximal tibia by 12 weeks. Fibular hypertrophy occurred in all children. There was shortening of 3 cm to 10 cm.
We performed CT to investigate how treatment may modify the basic skeletal pathology of congenital club foot. Two homogenous groups of patients treated by one of the authors (EI) or under his supervision were studied. The first included 32 patients with 47 club feet reviewed at a mean age of 25 years and treated by manipulation, application of toe-to-groin plaster casts and an extensive posteromedial release. The second included 32 patients with 49 club feet reviewed at a mean age of 19 years and treated by the Ponseti manipulation technique, application of toe-to-groin plaster casts and a limited posterior release. At follow-up the shape of the subtalar, talonavicular and calcaneocuboid joints was found to be altered in many feet in both groups. This did not appear to be influenced significantly by the type of treatment performed. Correction of the heel varus and the increased declination angle of the neck of the talus was better in the club feet of the second group, whereas reduction of the medial subluxation of the navicular was better in the first. There was a marked increase in the external ankle torsion angle in the first group and a moderate increase of this angle in the second group, in which medial subluxation of the cuboid on the anterior apophysis of the calcaneum was always corrected.
Aims: To review the results of limb lengthening and deformity correction in fibular hemimelia. Methods: Fifty-five patients with fibular hemimelia underwent limb reconstruction at Sheffield Children’s Hospital. According to Achterman and Kalamchi classification, twenty-six were classified as Type IA, six as Type IB and twenty-three as Type II fibular hemimelia. All patients had at least some shortening of ipsilateral femur but forty-nine had significant femoral deficiency. Lengthening of tibia and in significant cases femur was done using either De Bastiani, Vilarrubias or Ilizarov methods. Ankle valgus and heel valgus were corrected through osteotomies either in the supramalleolar region or heel.
