Hầu hết trẻ bị liệt đám rối cánh tay sinh Ai có dấu hiệu phục hồi trong 2 tháng đầu đời sau đó sẽ có chức năng bình thường. Tuy nhiên, trẻ sơ sinh không ai phục hồi trong 3 tháng đầu đời có một nguy cơ đáng kể lâu dài sức mạnh và hạn chế của chuyển động. Là sự chậm trễ trong phục hồi kéo dài từ 3 tháng đến 6 tháng | Obstetric Brachial Plexus Injuries Evaluation and Management Peter M. Waters MD Abstract Most infants with brachial plexus birth palsy who show signs of recovery in the first 2 months of life will subsequently have normal function. However infants who do not recover in the first 3 months of life have a considerable risk of long-term limited strength and range of motion. As the delay in recovery extends from 3 months to beyond 6 months this risk increases proportionately. The presence of a total plexus lesion a partial plexus lesion with loss at C5-C7 or Horner s syndrome carries a worse prognosis. Microsurgery is indicated for failure of return of function by 3 to 6 months. The exact timing of intervention is still open to debate. With microsurgical reconstruction there is improvement in outcome in a high percentage of patients. However the neural lesion is too severe and complex for present methods of reconstruction to restore normal function. Secondary correction of shoulder dysfunction with either latissimus dorsi-teres major tendon transfer or humeral derotation osteotomy is clearly beneficial for patients with chronic brachial plexopathy as is reconstruction of supination forearm contracture with biceps rerouting transfer and or forearm osteotomy. Reconstruction of the hand is also indicated for the patient with chronic disability. All of these procedures improve but do not completely normalize function. J Am Acad Orthop Surg 1997 5 205-214 Brachial plexus birth palsy occurs in to of live 2 Most infants with brachial plexus birth palsy who show signs of recovery in the first 2 months of life will subsequently have normal function. However infants who do not recover in the first 3 months of life have a considerable risk of long-term limited strength and range of motion. As the delay in recovery extends from 3 months to beyond 6 months this risk increases proportionately and microsurgery may be indicated. Central to the controversy of treatment
