Globally, cerebral palsy is a common neurological disorder in children, acting like an invisible shackle that restricts the bodies and futures of affected children. However, with the continuous advancement of medicine, more and more children with cerebral palsy are gradually breaking free from this shackle and moving towards a life full of hope.
Cerebral palsy, full name cerebral palsy, refers to a non-progressive brain injury syndrome caused by various reasons during the early stage of brain development from before birth to one month after birth. As early as the 19th century, medical scientists began to pay attention to such diseases. At that time, due to limited medical technology, people's understanding of cerebral palsy was only superficial, and many children were mistaken for "mentally retarded" and could not receive effective treatment and intervention.
In the past, the diagnosis of cerebral palsy often had to wait until the child showed obvious motor disorders, which caused many children to miss the best opportunity for intervention. The treatment methods were also relatively single, mainly based on simple rehabilitation training, and the effect was not ideal. Nowadays, with the development of medical imaging technology and neuroscience, our understanding of cerebral palsy is deeper, and the diagnosis and treatment methods are increasingly rich.
The etiology of cerebral palsy is complex and diverse, like an intertwined network involving multiple links.
· Prenatal period: If the mother is infected with pathogens such as rubella and cytomegalovirus, exposed to radiation and chemical substances, or suffers from diseases such as gestational hypertension and diabetes, it may affect the brain development of the fetus and increase the risk of cerebral palsy.
· During childbirth: There are hidden dangers. Premature delivery, low birth weight, fetal distress, prolonged labor, difficult delivery and other situations may lead to hypoxia and damage to the newborn's brain, causing cerebral palsy.
· Postpartum period: Failure to timely treat neonatal jaundice, intracranial infection, head trauma, etc., may also be inducements of cerebral palsy.
The symptoms of children with cerebral palsy are varied, mainly manifested as motor disorders, often accompanied by mental retardation, epilepsy, language disorders, visual and auditory disorders, etc.
· Spastic cerebral palsy: Children have tense limb muscles, limited joint movement, walk with a scissors gait, and find it difficult to control limb movements independently. For example, Xiaoyu from a rural area always walked on tiptoes, with crossed legs and staggered when running when he first learned to walk, and was later diagnosed with spastic cerebral palsy.
· Athetoid cerebral palsy: Children have involuntary and uncoordinated limb movements, strange facial expressions, and difficulty in swallowing and speaking.
Cerebral palsy (CP) is a complex neurodevelopmental disorder, whose core feature is non-progressive abnormalities in motor and postural development. Although rehabilitation therapy is the basis for the management of cerebral palsy, with the progression of the disease, many children will develop secondary muscle contractures, skeletal deformities and gait abnormalities. In these cases, Single Event Multi-Level Surgery (SEMLS), as a comprehensive orthopedic intervention strategy, has become an internationally recognized effective treatment method, aiming to correct multiple deformities at one time, thereby maximizing the improvement of children's function and quality of life.
As the name implies, SEMLS refers to the simultaneous correction of muscle, tendon and skeletal deformities in multiple parts of the body (such as hips, knees, ankles, feet, spine, etc.) of children with cerebral palsy under a single anesthesia. Its core concepts are as follows:
1. Holisticity: The motor dysfunction caused by cerebral palsy is systemic, often manifested as coordinated dysfunction of multiple joints and muscles. SEMLS recognizes this complexity and strives to solve problems as a whole, rather than "treating the head when the head hurts and the foot when the foot hurts".
1. Functionality: The ultimate goal of the surgery is to improve the child's motor function, enhance gait efficiency, reduce energy consumption, alleviate pain, and promote their participation in daily activities.
1. Precision: Relying on detailed preoperative gait analysis and imaging evaluation, accurately diagnose the root cause of abnormal gait, and formulate personalized surgical plans.
The orthopedic surgical treatment of cerebral palsy has gone through a long development process.
· Early stage (early to mid-20th century): During this period, orthopedic surgeries mainly focused on solving single and severe deformities, such as correcting clubfoot or knee flexion deformities through tendon cutting or lengthening. However, this local intervention often led to new muscle imbalances or compensatory gaits, with unsatisfactory results.
· Rise of gait analysis (1970s-1980s): With the development of biomechanics and motion analysis technology, the establishment of gait analysis laboratories was a milestone in orthopedic treatment for cerebral palsy. Through 3D motion capture systems, force platforms, electromyography and other equipment, doctors can objectively and quantitatively evaluate the child's gait pattern, identify the underlying causes of abnormal gait, and thus provide a scientific basis for surgical decisions. During this period, doctors began to realize the complexity of cerebral palsy gait and tried to perform multi-site sequential surgeries.
· Maturity of SEMLS concept (1990s to present): Based on the in-depth understanding of gait analysis and the recognition of the physical and mental impact of multiple surgeries on children, the concept of SEMLS gradually took shape and was widely accepted. Cerebral palsy treatment centers in the United States, Europe, Australia and other places took the lead in promoting this comprehensive surgical strategy. By solving multiple problems at one time, SEMLS significantly reduces the number of anesthesias, hospital stays, shortens the overall rehabilitation cycle, and improves long-term functional prognosis.
The successful implementation of SEMLS requires a high degree of professionalism and multidisciplinary collaboration.
· Age: It is usually performed on school-age children (such as 6-12 years old) whose skeletal development is relatively mature, but the deformity is not yet fully fixed and still has growth potential. Too early surgery may lead to recurrence of deformity due to growth and development, while too late surgery may result in poor results due to fixed skeletal deformity.
· Motor function classification: Children with GMFCS (Gross Motor Function Classification System) levels II-IV are usually suitable candidates for SEMLS.
· Cognition and compliance: The child and their family need to have a certain level of cognitive ability and rehabilitation compliance to cooperate with the long-term postoperative rehabilitation training.
· Type of deformity: There are multi-joint and multi-planar deformities that are difficult to correct through conservative treatment and seriously affect function.
· Detailed medical history and physical examination: Evaluate the child's neurological status, muscle tone, joint range of motion, muscle strength, balance ability, etc.
· Imaging examinations: X-rays, CT, MRI, etc., are used to assess skeletal deformities (such as hip dislocation, scoliosis, skeletal rotation deformities, etc.).
· Dynamic gait analysis (Gold Standard): This is the most important preoperative evaluation method for SEMLS. By capturing 3D motion trajectories, ground reaction forces, electromyographic activities and other data during the child's walking, it accurately analyzes the biomechanical mechanism of abnormal gait, thereby guiding the formulation of surgical plans and ensuring the precision and effectiveness of the surgery.
· Based on gait analysis results and clinical evaluation, orthopedic surgeons will formulate a detailed surgical plan, including the parts to be corrected, specific surgical methods (such as tendon lengthening, tendon transfer, osteotomy for correction, etc.) and the sequence of the surgery.
· Common SEMLS combinations include: lower extremity multi-joint soft tissue release (such as Achilles tendon, hamstring, adductor lengthening), femoral or tibial derotation osteotomy, hip reconstruction, etc.
· SEMLS is not a one-time solution, and postoperative rehabilitation is equally important as the surgery itself. It usually includes plaster fixation, brace use, early passive and active activities, strength training, balance training, gait training, etc.
· The rehabilitation team (physical therapists, occupational therapists, etc.) will formulate a personalized rehabilitation plan according to the type of surgery and the child's recovery to help the child consolidate the surgical effect and maximize functional improvement.
· Significant functional improvement: By correcting multiple deformities at one time, it can more comprehensively improve gait, balance and motor function.
· Reduced number of surgeries: Avoids multiple anesthesias and hospitalizations, reducing the physical and mental pain of the child and the economic burden on the family.
· Shortened rehabilitation cycle: The overall rehabilitation time is relatively shortened, allowing the child to return to school and social life faster.
· Reduced risk of complications: Avoids the cumulative risks that may be caused by multiple surgeries.
· High surgical complexity: Requires surgeons to have rich experience in orthopedic surgery for cerebral palsy and exquisite techniques.
· High preoperative evaluation requirements: Has high requirements for the equipment and professional team of the gait analysis laboratory.
· Long anesthesia time: One-time multi-site surgery may lead to longer anesthesia time, putting forward higher requirements for anesthesiologists.
· Intensive postoperative rehabilitation: Postoperative rehabilitation requires more systematic and intensive training, which is a test for the compliance of the child and their family.
SEMLS has become a standard practice in the global field of cerebral palsy treatment, especially in developed countries in Europe and America, where its popularity and research depth are in a leading position. International academic exchange platforms (such as the American Academy for Cerebral Palsy and Developmental Medicine - AACPDM, the European Cerebral Palsy Society - EACD, etc.) continue to promote the clinical practice guidelines and research progress of SEMLS.
Looking forward to the future, the development of SEMLS will be deeply integrated with the following cutting-edge technologies and concepts:
· Precise diagnosis and prediction: AI will conduct in-depth analysis of gait data, imaging data and clinical information to help doctors more accurately identify the root cause of deformities, predict surgical effects, and optimize surgical plans.
· Personalized rehabilitation programs: AI-based rehabilitation guidance systems can dynamically adjust rehabilitation plans according to the child's real-time recovery to improve rehabilitation efficiency.
· Surgical robots: More orthopedic surgical robots may appear in the future to assist doctors in more precise osteotomy and nail placement, reducing human errors.
· Endoscopic technology: Further develop minimally invasive tendon release and joint capsule release technologies to reduce surgical trauma and accelerate recovery.
· Preoperative simulation and guides: Use 3D printing technology to make models of the child's bones for preoperative simulation, and even print customized osteotomy guides to achieve more precise skeletal correction.
· Customized orthoses: Customize more fitting and comfortable orthoses and braces according to the child's postoperative recovery.
Although SEMLS mainly addresses secondary musculoskeletal problems, in the future, it may be combined with biomaterials and tissue engineering technologies to promote the repair and regeneration of postoperative tendons and bones, further optimizing function.
Use telemedicine platforms to provide preoperative evaluation and postoperative rehabilitation guidance for children in remote areas, breaking geographical restrictions and realizing the sharing of high-quality medical resources.
Single Event Multi-Level Surgery (SEMLS) is a major advancement in the field of orthopedic treatment for cerebral palsy. From the perspectives of holism, functionality and precision, it provides a more efficient and comprehensive solution for children with cerebral palsy. Although its complexity places higher demands on the medical team, the significant functional improvement and quality of life enhancement it brings make it an indispensable treatment strategy. With the continuous development of science and technology, we have reason to believe that future SEMLS will be more precise, minimally invasive and intelligent, bringing hope for standing, walking and participating in life to more children with cerebral palsy, and making their life paths broader.
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