UNASSIGNED: Congenital radioulnar synostosis (CRUS) is a rare condition characterized by the fusion of the radius and ulna bones in the forearm, resulting in limited forearm rotational movement.
UNASSIGNED: We present a unique case of a 26-year-old male who suffered a forearm injury following a road traffic accident. Initial evaluation revealed a malformed proximal radius and distal radioulnar joint, and the presence of radioulnar synostosis, along with a fracture at the junction of the radius and ulna. Open reduction internal fixation was performed, followed by structured rehabilitation. At 6-month follow-up, significant improvement in forearm motion was observed, enabling the patient to perform daily activities independently.
UNASSIGNED: This case underscores the importance of comprehensive evaluation in traumatic injuries and understanding the anatomy and function of the forearm complex. It also highlights the efficacy of surgical intervention and rehabilitation in restoring function and quality of life for patients with this rare condition. This report contributes to the limited literature on managing fractures in the context of CRUS and emphasizes the need for further research in this area.

UNASSIGNED: Radioulnar synostosis is an uncommon complication of forearm fractures and presents with varying degrees of restricted forearm movement. The diaphysial distal third synostosis is less common and excision of the synostosis is fraught with risk of re-ossification. Use of inert or biological interposing material has thus been accompanied with the synostosis excision and various methods have been described. There is still no consensus on the ideal treatment method.
UNASSIGNED: We, hereby, report a case of a long-standing radioulnar synostosis with rotational restriction of movement. Despite the movement restriction, the patient could perform basic activities of daily living and wanted to improve the movements. The presence of diaphyseal radioulnar synostosis was conformed on the radiographs and computerized tomography scan. A volar forearm approach was used and the bony bridge was excised. The ipsilateral native palmaris longus (PL) tendon was extracted from distal wrist crease and with its proximal attachment intact, circumferentially wrapped around the ulnar raw surface as an interposing material. Apart from this, free fat was also placed at the synostosis site. In the long-term follow-up of 10 years, there was no radiological evidence of re-ossification noted. The clinical improvement was not much but the patient was performing activities of daily living with no discomfort.
UNASSIGNED: The use of an encircling loop of the native PL tendon, over the raw surface of one of the forearm bones, may be another useful method to decrease the chances of recurrence following the excision of the synostosis.

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OBJECTIVE: The main objectives of this case report are to discuss prenatal ultrasound findings of congenital radioulnar synostosis and to review the literature.
METHODS: A patient was diagnosed with congenital radioulnar synostosis at eight months old when parents noticed limited motions in the child\'s left forearm. The parent denied any traumatic or family history of bony malformations. Physical examination by a pediatric orthopedics specialist and digital radiography revealed proximal radioulnar synostosis. The case report includes perinatal course, comparison between the postnatal radiography and fetal ultrasound images.
CONCLUSIONS: Congenital radioulnar synostosis is often associated with sex chromosome abnormalities and congenital musculoskeletal disorders or syndromes affecting limbs. Isolated congenital radioulnar synostosis is hardly diagnosed before birth, in some cases even have been neglected postnatally. Knowing the developmental milestones of the forearm and specified high-risk groups might help develop a targeted screening strategy to increase the possibility of early detection and intervention.

We read the article \"Rare complication of open reduction and internal fixation of fracture distal radius: A case report of distal radioulnar synostosis\" by Ahmed Elmahdi [1], with a lot of interest. We commend the authors efforts in describing a rare case of distal radioulnar synostosis after open reduction and internal fixation for distal radius fracture. It is the purpose of this letter-to-the-editor to express our opinion, which is based on the research that has been published, which indicates that our opinion is supported by the research.

Congenital radioulnar synostosis is a rare musculoskeletal disorder of the elbow, occurring as a result of variable degree and length of the congenital fusion of the proximal radioulnar joint. Patients presents early to the hospital depending on the severity of the synostosis and its effect on elbow function. It may have psychosocial effects on the affected individuals as they grow older especially when the deformity is dramatic. Treatment may be conservative, surgical (which may have a variable degree of success) and psychotherapy.

Alagille\'s syndrome is an infrequent genetic condition with autosomal inheritance and variable expression. The complete form exhibits 5 clinical signs, chronic intrahepatic cholestasis, characteristic facies, cardiovascular anomalies, posterior embryotoxon, and vertebral defects. If only 3 or 4 of these are present the case is considered as an incomplete form. The association of Alagille\'s syndrome with radio-ulnar synostosis is extremely rare. There is only one case described in the indexed literature. A case is presented of Alagille\'s syndrome with bilateral proximal radioulnar synostosis. To the best of our knowledge this is the second reported case of this association.

BACKGROUND: Congenital radioulnar synostosis is a rare malformation of the upper limb, with functional limitations of the limb.
METHODS: A 10-year-old child with pain and restricted mobility of the elbow joint was admitted to the hospital. Plain film radiography and CT examination was performed. Radiological examinations showed a congenital radioulnar synostosis. The child underwent surgical treatment - derotational osteotomy.
CONCLUSIONS: Diagnostic imaging including computed tomography with three-dimentional (3D) reconstructions, preceding surgery enables planning of the surgical treatment.