1/58. Recognition and management of Tillaux fractures in adolescents.Tillaux fractures are relatively uncommon Salter Harris III fractures of the tibia. The importance of recognizing this fracture is that a residual deformity in the joint surface can lead to premature degenerative arthritis. For this reason, it is important that accurate imaging to assess the congruity of the joint, as well as adequate reduction, is obtained. These fractures can occur in adolescents in the 18-month period during which the distal tibial epiphysis is closing. These injuries occur either by lateral rotation of the foot or by medial rotation of the leg on the fixed foot. Closed reduction is sufficient in most cases; however, if a gap of > or = 2 mm of the articular surface remains, open reduction is usually required to adequately reduce the articular surface. Orthopedic injuries are one of the most common reasons children are brought to the emergency department (ED). Most of these injuries are easily managed by splinting, with outpatient orthopedic follow-up. However, certain fractures need closer evaluation and immediate consultation with an orthopedic surgeon. One relatively uncommon fracture that needs special attention is the Tillaux fracture. Paul Jules Tillaux first described this particular fracture in 1892. He performed experiments on cadavers and found that stress to the anterior inferior tibiofibular ligament could lead to this type of avulsion fracture, which today is termed the Tillaux fracture. The distal tibial epiphysis is involved, and the mechanism usually is forced external rotation of the foot in a 12- to 14-year-old adolescent. This fracture only occurs during a certain time of adolescence, owing to the differential growth rate of the epiphysis, and only under certain circumstances. The fracture is of great importance because it involves a major weight-bearing articular surface. A residual deformity of the joint surface can lead to premature degenerative arthritis. We present a patient with a Tillaux fracture to elaborate on the mechanism of injury and to summarize the importance of its recognition and imaging and treatment options.- - - - - - - - - - ranking = 1keywords = ligament (Clic here for more details about this article) |
2/58. Subtalar subluxation in ballet dancers.ankle injuries frequently occur in dancers. Among these injuries, only a few cases of talar subluxation have been reported in the literature. In our series, we diagnosed and treated 25 subtalar subluxations over a 1-year period in the Ballet Bejart Lausanne company. The subluxations occurred after a grand plie on pointes or at the landing of a jump on demi-pointes, without any mechanism of ankle sprain. The dancer usually noted a sudden and sharp pain in the talonavicular joint and hindfoot with a feeling of "forward displacement" of the foot. At palpation, the talonavicular ligament, the anterior talofibular ligament, and the posteromedial part of the subtalar joint were painful. A limitation of the ankle extension and a clear hypomobility of the subtalar joint were noted. Under the effect of shearing forces on the midtarsal joint, a posteromedial subtalar subluxation occurred. Treatment consisted of a manipulation that reduced the subluxation. Continuous taping, which locks the talonavicular joint in the anterior direction, was recommended for 6 weeks. dancing could be resumed in a swimming pool after 2 weeks, and on the ground after 3 to 4 weeks. We found that subluxation could recur, and that it could eventually become chronic.- - - - - - - - - - ranking = 2keywords = ligament (Clic here for more details about this article) |
3/58. The MR imaging features of the posterior intermalleolar ligament in patients with posterior impingement syndrome of the ankle.OBJECTIVE: To describe the MR imaging features of the posterior intermalleolar ligament (IML) in patients with posterior impingement syndrome (PIS) of the ankle. DESIGN AND patients: Three patients (one male and two females, 13-25 years of age) are presented. Each patient presented clinically with symptoms of PIS of the ankle. Plain film examination was negative for a structural cause of the PIS in all patients. MR images were obtained with a 1.5 T scanner using an extremity coil. Clinical data and, in one patient, findings at ankle arthroscopy, were correlated with the results of MR imaging. RESULTS: Ankle MR images from the three patients with a clinical diagnosis of PIS are presented. Findings in all patients included: (1) absence of another structural cause of the PIS (i.e., an os trigonum, trigonal process, fracture, loose bodies, etc.), (2) identification of the IML as a structure discrete from the posterior talofibular and tibiofibular ligaments, and (3) prominence of the IML as indicated by (a) identification of the IML in three different imaging planes, and (b) a caliber of the IML comparable to that of the conventional posterior ankle ligaments visualized in the same imaging plane. Arthroscopic resection of a meniscoid IML resulted in resolution of the PIS in one of the patients presented. CONCLUSIONS: MR imaging is an effective means of investigating the IML as a potential cause of PIS. The identification of a prominent IML in the absence of another structural cause of PIS indicates that impingement of the IML is the most likely cause of PIS.- - - - - - - - - - ranking = 7keywords = ligament (Clic here for more details about this article) |
4/58. Medial malleolar fracture associated with deltoid ligament rupture.The author reports a case of a fractured medial malleolus with a completely disrupted deltoid ligament following a pronation injury. To the author's knowledge, concurrent failure of both structures over the medial side of the ankle has not been previously documented in a pronatory injury.- - - - - - - - - - ranking = 5keywords = ligament (Clic here for more details about this article) |
5/58. Posterolateral dislocation of the ankle without fracture.We report an unusual case of open posterolateral dislocation of the ankle without fracture following a motor vehicle accident. Most of previously reported cases are posteromedial dislocation. The anterolateral, posterolateral, and purely superior dislocations of the talus make up smaller percentage. The mechanism of this injury appears to be forced eversion of the foot when it is maximally plantar flexed and axially loaded. Our case was treated by manual reduction and percutaneous fixation and anatomical repair of the disrupted deltoid ligament at the time of initial debridement, also achieved good long-term functional and radiographic results.- - - - - - - - - - ranking = 1keywords = ligament (Clic here for more details about this article) |
6/58. Pure dislocation of the ankle: three case reports and literature review.Ankle dislocation without fracture is an extremely rare injury. The results of treatment are reported for three patients who had a posteromedial open dislocation, a lateral open dislocation, and a posterior closed dislocation of the ankle. Management consisted of immediate reduction, debridement and capsular suture in the open dislocations, and immobilization with a short leg cast in all patients. At followup no patient had tibiotalar joint instability; a 10 degrees to 15 degrees loss in the range of dorsiflexion was observed in two patients. One patient reported paresthesia in the area of the superficial peroneal nerve. The three patients achieved good long-term functional and radiographic results. Predisposing factors that contribute to the pathogenesis of this lesion are internal malleolus hypoplasia, ligamentous laxity, weakness of the peroneal muscles, and previous ankle sprains. Among the three patients, medial malleolus hypoplasia was present in one patient and previous sprains were seen in the clinical history of another patient.- - - - - - - - - - ranking = 1keywords = ligament (Clic here for more details about this article) |
7/58. Diastasis with low distal fibula fractures: an anatomic rationale.Tibiofibular diastasis occurs infrequently in displaced ankle fractures that include a low fibula fracture. This is because the interosseous ligament, the major ligament resisting diastasis, lies above the level of the fracture. The anatomic study of the syndesmotic complex of the ankle reported here showed that the interosseous ligament has a variable attachment on the fibula, differing between specimens in its distance above the synovial reflection or joint line. Although most specimens had attachments approximately 1 cm or greater above the joint line, one of 18 specimens attached just above the synovial reflection. In such a case, a low fibula fracture would disrupt the interosseous ligament, which explains the anatomic basis for the infrequent diastasis in these ankle fractures.- - - - - - - - - - ranking = 4keywords = ligament (Clic here for more details about this article) |
8/58. The Frenchman's fibular fracture (Maisonneuve fracture).Two patients with injuries to the ankle sustained by rotational trauma complained only of pain in the ankle. Careful examination revealed tenderness over the proximal fibula. Subsequent radiographic studies revealed high helical fracture of the fibula, as originally described by Maisonneuve. The Maisonneuve fracture is produced by diastasis - a separation of bones resulting from rupture of ligaments around the ankle. According to classification of fibula injuries by mechanism of injury, the Maisonneuve fracture is due to external rotation of the foot relative to the tibia but it is not clear whether the foot is in pronation or supination or moves during injury.- - - - - - - - - - ranking = 1keywords = ligament (Clic here for more details about this article) |
9/58. Symptomatic os subfibulare caused by accessory ossification: a case report.Separated ossicles at the tip of the lateral malleolus, the condition known as os subfibulare, are sometimes a cause of ankle pain. There are two theories regarding the origin of os subfibulare. One theory proposes that it is caused by an avulsion fracture attributable to pull of the anterior talofibular ligament, whereas the other theory proposes that it is the result of an accessory ossification center. However, some authors have reported that os subfibulare is an avulsion fracture and few reports of accessory ossification have been described recently. A patient with os subfibulare that may have been caused by accessory ossification rather than an avulsion fracture was treated by the current authors.- - - - - - - - - - ranking = 1keywords = ligament (Clic here for more details about this article) |
10/58. Chronic subtalar instability due to insufficiency of the calcaneofibular ligament: a case report.Calcaneofibular ligament insufficiency in isolation is an uncommon cause of chronic instability of the subtalar joint. We report one case of chronic subtalar instability due to calcaneofibular ligament insufficiency after an ankle sprain. It was diagnosed with clinical findings and stress radiograph, and successfully treated with proximal advancement of the elongated calcaneofibular ligament.- - - - - - - - - - ranking = 7keywords = ligament (Clic here for more details about this article) |
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