1/151. Atlantoaxial rotary subluxation in children.Traumatic torticollis is an uncommon complaint in the emergency department (ED). One important cause in children is atlantoaxial rotary subluxation. Most children present with pain, torticollis ("cock-robin" position), and diminished range of motion. The onset is spontaneous and usually occurs following minor trauma. A thorough history and physical examination will eliminate the various causes of torticollis. Radiographic evaluation will demonstrate persistent asymmetry of the odontoid in its relationship to the atlas. Computed tomography, especially a dynamic study, may be needed to verify the subluxation. Treatment varies with severity and duration of the abnormality. For minor and acute cases, a soft cervical collar, rest, and analgesics may be sufficient. For more severe cases, the child may be placed on head halter traction, and for long-standing cases, halo traction or even surgical interventions may be indicated. We describe two patients with atlantoaxial rotary subluxation, who presented with torticollis, to illustrate recognition and management in the ED.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
2/151. Isolated posterolateral dislocation of the radial head in a boy.Isolated dislocation of the radial head in children is a rare injury. We report an isolated posterolateral dislocation of the radial head in a boy after a fall on the outstretched arm. Immediate closed reduction and early active motion achieved satisfactory results.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
3/151. Unilateral mandible fracture with bilateral TMJ dislocation.temporomandibular joint (TMJ) dislocation occurs when the condylar head slips forward causing the posterior articulating surface of the condyle to advance ahead of the articular eminence, possibly becoming entrapped. Following dislocation, the ligaments around the joint often stretch, causing severe muscle spasms and joint pain. There is no standard evaluation and treatment method for acute TMJ dislocation, but the most effective course is immediate reduction. This paper presents a 42-year-old woman who sustained a unilateral mandible fracture with bilateral TMJ dislocation in an automobile crash. Although the fracture was apparent on plane film and panorex, the dislocation was not found until six weeks later, when the jaw was unwired. At that time, the dislocation was suspected because of decreased range of motion, but was not verified until an MRI was performed. The result was long-term therapy, eventual bilateral TMJ surgery, and chronic TMJ pain for the patient.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
4/151. Transarticular fixation with the capacity for motion in fracture dislocations of the elbow.Post-traumatic stiffness of the elbow joint is a frequent result of immobilisation leading to severe disability in the use of the upper extremity. Recognition of the tendency to stiffness leads to the assumption that the strong self-healing forces of the capsule and ligament apparatus converts the initial instability of the joint after ligament disrupture, into a high-grade undirected stability following immobilisation. Directed stability as it is produced by the natural ligament apparatus of the joint on the other hand produces a guided movement of the joint in one direction. These theoretical considerations lead to the idea that the self-healing forces of the ligament apparatus under continuous guided movement of the joint will result in a stable and movable joint to allow healing of the compromised soft tissue envelope and moreover to maintain free soft tissue access without compromising the stability. For this a unilateral fixator with motion capacity was developed. The joint bridging application approaches the humerus and ulna from the lateral side. The proximal pin group is inserted into the proximal region of the humerus respecting the radial nerve. The distal pin group is implanted from the dorsal side into the middle third of the ulna. The fixator has a hinge joint. The design of the fixator clamps, bars and the hinge joint allows simple alignment with the rotational axis of the elbow. Pro- and supination of the forearm is unhindered. Flexion and extension can be permitted according to the soft tissue situation.- - - - - - - - - - ranking = 5keywords = motion (Clic here for more details about this article) |
5/151. Rotary atlanto-axial subluxation with torticollis following central-venous catheter insertion.Atlanto-axial subluxation with torticollis is an uncommon condition that occurs in children usually as a result of pharyngeal infection, minor trauma, or neck surgery. Passive motion of the head and neck during general anesthesia is probably another etiologic factor. torticollis is the most common presenting physical finding. pain may or may not be present, but is commonly present with passive neck motion. Neurologic sequelae are uncommon. Our case illustrates this condition as a complication of central venous catheter (CVC) insertion in a child under general anesthesia. The surgeon should suspect this pathology when a child presents with torticollis following CVC placement. Precautions should be taken in the operating room to avoid aggressive rotation and extension of the child's neck while under general anesthesia whether or not cervical inflammation is present. Special attention to head and neck positioning should be taken in patients with Down's syndrome since they are at increased risk for atlanto-axial subluxation. The prognosis is excellent when diagnosed early. A delay in diagnosis can result in the need for surgical intervention.- - - - - - - - - - ranking = 2keywords = motion (Clic here for more details about this article) |
6/151. Resolution of suckling intolerance in a 6-month-old chiropractic patient.OBJECTIVE: To discuss the management and resolution of suckling intolerance in a 6-month-old infant. CLINICAL FEATURES: A 6-month-old boy with a 4(1/2)-month history of aversion to suckling was evaluated in a chiropractic office. Static and motion palpation and observation detected an abnormal inward dishing at the occipitoparietal junction, as well as upper cervical (C1-C2) asymmetry and fixation. These indicated the presence of cranial and upper cervical subluxations. INTERVENTION AND OUTCOME: The patient was treated 5 times through use of cranial adjusting; 4 of these visits included atlas (C1) adjustment. The suckling intolerance resolved immediately after the first office visit and did not return. CONCLUSION: It is possible that in the infant, a relationship between mechanical abnormalities of the cervicocranial junction and suckling dysfunction exists; further research in this area could be beneficial. Possible physiological etiologies of painful suckling are presented.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
7/151. Dynamic magnetic resonance imaging technique for the study of the temporomandibular joint.AIMS: Echo planar imaging (EPI) is an ultrafast magnetic resonance imaging (MRI) technique that can scan a single frame in less than a second. The aim of this study was to use the EPI technique to develop a new dynamic MRI protocol for the temporomandibular joint (TMJ). methods: Basic fast-field echo and EPI pulse sequences were used for dynamic studies of the TMJ. The subjects were instructed to perform spontaneous, continuous, slow opening/closing movements without visual or audio feedback. Different scanning parameter settings were explored to optimize the results. RESULTS: With an opening/closing movement of approximately 6 to 7 seconds per cycle, the proposed protocol yielded a good insight into the relative motion between condyle and disc. It was also possible to see the deformation of the disc during movement. CONCLUSION: The EPI technique is a non-invasive technique that can be used for dynamic imaging study of a slow but continuous, uninterrupted jaw movement.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
8/151. Isolated dislocation of the second metacarpal at both ends.A dislocation of the second metacarpal at both ends is reported herein for the first time. Six weeks after injuring her right hand in a fall while climbing stairs, a 34-year-old woman visited our clinic with pain, swelling, and deformity of her hand. The radiographs showed a volar dislocation of the head and a dorsal dislocation of the base of the second metacarpal. The probable mechanism of injury was the hyperextension at the metacarpophalangeal joint; this force dislocated the metacarpal head toward the volar plate. Force then further continued along the second metacarpal shaft in the hyperflexed wrist, thus dislocating the base dorsally. We performed an open reduction and K-wire fixation of the second metacarpophalangeal joint and an arthrodesis of the second carpometacarpal joint. At the six-month follow-up, the patient had restricted flexion (0 to 50 degrees) at the second metacarpophalangeal joint, but full range of motion at the interphalangeal joints. The grip strength on the right side was 70% of that measured in the uninvolved hand. Key Words: Dislocation, Second metacarpal.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
9/151. Orthopaedic measurements with computed radiography. Methodological development, accuracy, and radiation dose with special reference to the weight-bearing lower extremity and the dislocating patella.The overall aim of this study was to develop and evaluate a measurement system for computed radiography (CR) and Picture Archiving and communication Systems (PACS), permitting measurements of long distances and angles in and between related images. The developed measurement system, which was based on the QUESTOR Precision radiography (QPR) system, was applied to the weight-bearing knee with special reference to the dislocating patella. The QPR system modified for CR fulfilled the criteria for measuring the weight-bearing knee. The special measuring assistance tools that were developed were important for the implementation of CR and PACS, particularly in workstations programmed for musculoskeletal radiology. The energy imparted to the patient was reduced by 98% at the lowest exposure of the CR-system, compared with our conventional analogue method, without loss of diagnostic accuracy. The CR technique creates a possibility, to an extent not previously feasible, to differentiate the exposure parametres (and thus minimise the radiation dose to the patient) by carefully considering the purpose of the examination. A radiographic method for measuring the rotation of the femur and the tibia, the Q-angle, and the patellar translation was developed and applied to healthy volunteers. The introduced patellar variables have yielded new insights into the complex sequence of motions between the femur, tibia, and patella. The patients with a dislocating patella were subdivided into one "clean" group of spontaneous dislocations and one group with various traumas in the history, which thus resulted in two groups with distinct radiographic differences. The Q-angle was decreased in knees that had suffered dislocations, and the traditional surgical treatment with a further reduction of the Q-angle must be challenged. The use of clinical measurements of the Q-angle was not an optimal way to evaluate the mechanical alignment in the patellofemoral joint under physiological conditions. In this study, we have proved that the developed method for CR and PACS is a useful technique for measurements in and between related images, and is superior to the conventional analogue technique.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
10/151. Secondary ulnar nerve palsy in adults after elbow trauma: a report of two cases.Secondary ulnar nerve palsy, an unusual condition in which the onset of ulnar nerve dysfunction occurs 1 to 3 months after elbow trauma, can be the cause of sudden deterioration of elbow function. Initially recognized in 1899, this condition has not been reported often. We describe 2 patients who had no subjective or objective evidence of ulnar nerve dysfunction after elbow trauma but had a sudden loss of motion, pain, and clinical and electrophysiologic evidence of ulnar nerve compression at the elbow 4 to 5 weeks after trauma. Marked improvement occurred after ulnar nerve subcutaneous transposition and contracture release.- - - - - - - - - - ranking = 1keywords = motion (Clic here for more details about this article) |
| | Next -> |