False Ankylosis Research Articles

Extra Articular False Ankylosis Following Fusion of Mandible to Zygomatic Bone and Maxilla Due to Ossifying Fibroma-A Rare Case Report

Trismus is a disturbing condition with varied etiology, one of them is Extra articular ankylosis. The extra articular ankylosis has been reported in the literature as a fusion of the coronoid process to the zygomatic bone or to the skull base. However, there are a very few cases reported in the literature that highlights a pathologic tumor of mandible leading to extra-articular ankylosis and subsequently resulting in trismus. We hereby present a unique case of young adult having restricted mouth opening due to the bony fusion of the mandibular ramus to the zygomatic bone and zygomaticomaxillary buttress region due to a pathologic tumor diagnosed as Ossifying Fibroma.

Bilateral Extracapsular Soft-Tissue Ossification Affecting Range of TMJ Motion in an Airedale Terrier

A 3 mo old female Airedale terrier presented with decreased range of motion of the temporomandibular joint (TMJ), which was first recognized at weaning. Computed tomography (CT) revealed abnormal, bilateral ossification of the soft tissues extending from the region of the tympanic bullae to the medial aspect of the angular process of each mandible. Those ossified structures most closely approximated the location of the lateral pterygoid muscles. The ossified structures were present at presentation and initially manifested as complete ossification on the right side. The condition progressed to complete bilateral ossification by 3 yr of age. The mandibular condyles associated with the temporomandibular joints were malformed. The patient had severe mandibular distoclusion with deviation of the mandible to the left. The left mandibular cheek teeth were positioned in a caudal cross bite. A single treatment of manual stretching and breakdown of the ossified muscle of mastication by placement of tongue depressors within the oral cavity resulted in no increase in TMJ range of motion as measured by the incisal opening. This is the first reported case of spontaneous false ankylosis of the TMJ in an Airedale terrier.

Temporomandibular joint ankylosis in cats and dogs

Temporomandibular joint (TMJ) ankylosis is characterized by difficulty or inability to open the mouth. The ankylosis may be articular ('true') or extra-articular ('false'). Clinical signs, radiographic studies, treatment and follow-up are presented in a retrospective study involving five cats and five dogs. The findings were compared with TMJ ankylosis in humans. CT imaging with three-dimensional reconstruction proved to be of great value in determining the extent of the abnormalities and helped with preoperative planning. Articular TMJ ankylosis occurred in six animals and extra-articular TMJ ankylosis was found in the other four cases. In three cats and in three dogs, the TMJ ankylosis was trauma related; the remaining patients were diagnosed with a tumour. Resection of ankylosing tissue in false ankylosis or gap arthroplasty in true ankylosis was successful in all of the trauma induced cases. In the two cats, with tumour related ankylosis, the ankylosis was caused by an osteoma and resection had a good prognosis, whereas the two dogs had to be euthanatized.

False ankylosis from fusion of the styloid process to the mandible after orthognathic surgery

False ankylosis from fusion of the styloid process to the mandible after orthognathic surgery

False ankylosis from fusion of the styloid process to the mandible after orthognathic surgery

False ankylosis from fusion of the styloid process to the mandible after orthognathic surgery

自家肋軟骨を用いた顎関節形成術の１例

A case of false ankylosis following bilateral condylar fractures of the mandible is presented. Patient was treated by resection of fractured condylar processes and immediate reconstruction with autogenous costal cartilage grafts for interposition. Vertical dimension of the ramus was maintained physically by cartilage grafts and satisfactory results without facial deformity or deviation of the mandible were obtained.It can be concluded that autogenous cartilage grafts for interposition will survive for enough time to prevent postoperative muscular contracture.

False ankylosis of the temporo-mandibular joint following craniotomy

Two cases of false ankylosis of the temporo-mandibular joint following elective neurosurgery are described. The possible causation of this condition is discussed.

Condylar reconstruction: Treatment planning

The treatment planning of a patient with false ankylosis, severe malocclusion, and a bird-face appearance is presented. The fabrication of the condylar head prosthesis was facilitated by the use of tomograms. The principles of tomography and its clinical application are discussed. The condylar head prostheses cast in ticonium with the shanks coated with porous Proplast material provided and have maintained the position of the mandible in an acceptable occlusion and improved facial appearance.

Weak foot: Pathogenesis and treatment

The author has attempted a presentation of the rationale in the attack on the distortion of physiology leading to the common type of weak foot, that associated with poor body posture. The discussion has been limited to the uncomplicated weak foot, valgus relation, this abnormality being taken as the starting point in a large number of the pathological conditions of the foot, such as flat foot, callous, arthritis with true or false ankylosis, etc., that result from maladaptation of the weight bearing mechanism to the superstructure. Briefly, the sequence of events appears to be as follows: slouch posture with a forward shift of the line of gravity of the botly, lumbar lordosis, increased pelvic tilt, internal femoral rotation, internal astragalar rotation, valgus relation. The effect of valgus relation on the efficiency of the foot is discussed. It is pointed out that there are five therapeutic factors concerned in readapting the weight bearing mechanism to the superstructure and that all of these factors—postural correction, correct usage of the feet, exercises, proper shoes and arch supports—must be employed simultaneously. Absolute cooperation of the patient is essential since the plan of treatment has as its goal the development in the individual of a consciousness of posture that is followed eventually by a posture reflex. This necessitates first of all the instruction of the patient in the elements of correct posture. The “wall and chair maneuvers” are described in this connection. Development of neglected muscles through exercises enables the patient to pull himself into correct posture and to stay there. This act in time becomes reflex. An exercise routine is given and explained. It is obvious that the foot cannot function efficiently when the shoe covering it is not properly constructed and correctly sized. The elements of a good shoe are discussed. The arch support is considered from the mechanical and clinical points of view. Patients for postural correction must be selected with care since readjustment of a posture that has been maintained for years is a serious matter. In patients over fifty years of age the weak foot is almost invariably accompanied by various pathological sequels. Palliative treatment of these complications should be undertaken immediately and followed while postural correction is in progress. This latter correction must be slow and extended over a period of many months or even several years. The author wishes to express his appreciation for the valuable assistance and criticism of Mr. W. Gordon Garretson, Division of Architecture and Engineering, State of Illinois.