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At least 613 records · Page 34Linked to original sources
PubMed1982

Normal range of motion of the hip, knee and ankle joints in male subjects, 30-40 years of age.

Studies of the normal range of joint motion in human adults are uncommon, and frequently used references are based on materials not immediately accessible. The present paper reports on ranges of motion in healthy male subjects, 30-40 years old, in a randomized sample from the population in the city of Göteborg. It is based on 210 hips, 180 knees and 192 ankle joints. Arcs of passive motion were measured by techniques suggested by the American Academy of Orthopaedic Surgeons. Significant differences were found between the obtained measurements and previous referenced studies. The differences can be due to the measurement procedure, difficulties in measurement technique, the patient material, and inter-individual variations. There was no statistically significant differences between the motions of the right and left side, and its is therefore suggested that a patient's healthy limb can be used for comparison with the affected side in the presence of disease or a lesion.

Adult↗
PubMed1995

[Experiences with using the soft cast in injuries of the fibular ligament of the upper ankle joint].

From June 1993 until October 1994, 75 persons with recent ruptures in the region of the fibular ligament at the ankle joint were treated with a Softcast at our hospital. The patients were divided into a surgical and a conservative group: 33 patients were operated on and 42 were treated conservatively; 49 persons were male, 26 female. Both groups were initially treated with a conventional cast, and after the first week a Softcast was used. Surgery was performed whenever X-ray examination showed a difference of more than 10 degrees in supinatory subluxation between the unstable ankle and the intact one or anterior instability of more than 10 mm. In 55 of these patients follow up by clinical and X-ray examination was possible after an average period of 14.5 months after trauma and treatment. For the clinical follow-up the 100-point Pförringer-Stolz score was used (6), and the X-ray examination was performed under constant conditions by means of these standardized conditions, excellent and good results were achieved in more than 95% of the patients. The authors recommend the semi-rigid immobilization with Softcast in both operatively and conservatively treated patients with ruptures of the lateral ankle ligaments.

Adult↗
PubMed1994

[Acute injury to the lateral ligament of the ankle joint in the athlete].

The ankle sprain is one of the most common injuries in sports. It is useful to classify the grade of injury clinically. Stress x-rays, stress ultrasound or radiographic examinations are not necessary. Based on the analysis of 24 controlled studies we conclude that functional treatment is sufficient. It does not lead to higher subjective or objective instability nor to a greater number of reinjuries. Functional treatment has no complications. Although controlled studies about the treatment of athletes are missing, but there is no reason for a different treatment in athletes.

Adolescent↗
PubMed1981

Anterolateral rotational instability in the ankle joint. An experimental study of anterolateral rotational instability, talar tilt, and anterior drawer sign in relation to injuries to the lateral ligaments.

In seven amputated legs the ankle region was dissected free, and anterolateral rotational instability, talar tilt, and anterior drawer sign in the talocrural joint were studied in relation to varying degrees of injury to the lateral ligaments of the ankle and in relation to various positions of the foot. This revealed a good correlation between the degree of ligamentous injury and the degree of the three different types of instability. Anterolateral rotational instability was maximal when the investigation was performed with the ankle joint in the plantar flexion, whereas the talar tilt was more pronounced with the ankle joint in the neutral position and the anterior drawer sign most distinct when the ankle joint was in dorsal flexion. Compared with the other two signs, the anterior drawer sign proved to be a relatively inconstant type of instability.

Ankle Joint↗
PubMedDate not supplied

Ageing effects on knee and ankle joint angles at key events and phases of the gait cycle.

The objective of this research was to determine whether joint angles at critical gait events and during major energy generation/absorption phases of the gait cycle would reliably discriminate age-related degeneration during unobstructed walking. The gaits of 24 healthy adults (12 young and 12 elderly) were analysed using the PEAK Motus motion analysis system. The elderly participants showed significantly greater single (60.3% versus 62.3%, p < 0.01) and double ( p < 0.05) support times, reduced knee flexion (47.7 degrees versus 43.0 degrees , p < 0.05) and ankle plantarflexion (16.8 degrees compared to 3.3 degrees , p = 0.053) at toe off, reduced knee flexion during push-off and reduced ankle dorsiflexion (16.8 degrees compared to 22.0 degrees , p < 0.05) during the swing phase. The plantarflexing ankle joint motion during the stance to swing phase transition (A2) for the young group (31.3 degrees ) was about twice ( p < 0.05) that of the elderly (16.9 degrees ). Reduced knee extension range of motion suggests that the elderly favoured a flexed-knee gait to assist in weight acceptance. Reduced dorsiflexion by the elderly in the swing phase implies greater risk of toe contact with obstacles. Overall, the results suggest that joint angle measures at critical events/phases in the gait cycle provide a useful indication of age-related degeneration in the control of lower limb trajectories during unobstructed walking.

Adaptation, Physiological↗
PubMed1986

[Diagnosis and therapy of acute and chronic ligament instability of the lower ankle joint].

At the Casualty Clinic of the University Hospital in Hannover, from 1981 to 1985, a total of 35 patients were treated operatively for chronic instability of the transverse tarsal joint: combined instability of the ankle and transverse tarsal joints (n = 15), isolated instability of the subtalar joint (n = 17), and isolated instability of the pretalar joint (n = 3). A simple technique of radiological positioning permits easy and certain diagnosis of isolated anterolateral rotary instability of the subtalar joint. Modified Elmslie tendosis (n = 32), used as an indirect replacement for the interosseus talocalcaneal ligament, had good and very good results in 25 of 27 cases followed up after 3 years.

Ankle Injuries↗
PubMed1996

Chondrocyte matrix metalloproteinase-8: up-regulation of neutrophil collagenase by interleukin-1 beta in human cartilage from knee and ankle joints.

The loss of aggrecan from articular cartilage may lead to the development of osteoarthritis (OA). Degradation products of human aggrecan, generated in vivo by enzymatic cleavages, have been identified in synovial fluid of patients with rheumatoid arthritis and OA. One matrix metalloproteinase (MMP), stromelysin (MMP-3), and an unidentified proteinase called "aggrecanase" are believed to generate these products in pathologic conditions. Thus far, only one proteinase, neutrophil collagenase (MMP-8), has been shown in vitro to be capable of cleavage of the aggrecan molecule at the "aggrecanase" site. In this study, we compare the presence and distribution of MMP-3 and MMP-8 in cartilages from two different joints of normal human donors. We determined whether mRNA for MMP-8 is expressed in normal human articular cartilage from different joints. In addition, we compared differences in MMP-8 and MMP-3 gene expression between human ankle and knee cartilage after in vitro stimulation by interleukin (IL)-1 beta. These two joints were chosen because the incidence of symptomatic and radiographic OA varies between the different joints. The knee is the most frequently involved joint, whereas the ankle (talocrural) joint is relatively rarely affected. Message for MMP-8 was detected in untreated cartilage from normal knee joints, but not in untreated cartilage of normal ankle joints. Message for MMP-3 was detectable in most of the knee and ankle cartilages. Messenger RNA expression for both MMPs could be up-regulated by IL-1 beta. The highest doses of IL-1 beta appeared to be most effective in stimulation of mRNA for MMP-3, whereas MMP-8 expression was more sensitive to lower doses of IL-1 beta. The fact that ankle cartilage with a low incidence of OA does not express MMP-8, whereas knee cartilage with a high incidence of OA does not express MMP-8, whereas knee cartilage with a high incidence of OA does constitutively express MMP-8, suggests that MMP-8 might be one of the key enzymes in the pathogenesis of osteoarthritis. This is further supported by our finding that the earliest signs of cartilage degradation were very similar to those found in IL-1 beta-treated explants.

Adolescent↗
PubMed2000

Peripheral and central effect of baclofen on ankle joint stiffness in multiple sclerosis.

The effect of baclofen on the soleus stretch reflex and peripheral muscle function was tested in 10 multiple sclerosis (MS) patients with spasticity in the lower extremities. Peroral baclofen (15-60 mg daily) induced a decrease in the twitch torque of the soleus muscle elicited by supramaximal nerve stimulation. The torque was 15.1 +/- 5.5 Nm with baclofen and 17.1 +/- 5.0 Nm without baclofen (P = 0.03). The slope of the background torque/EMG relation was also changed from 1.53 Nm/microV with baclofen to 1.13 NM/microV without it (P = 0.03), and the soleus stretch reflex threshold decreased from 11.4 degrees /s (3.1-62.8) to 6.2 degrees /s (3.1-25.1) without baclofen medication (P = 0.03) in the relaxed muscle. Furthermore, baclofen induced an approximately 20% decrease in the total stiffness at the ankle joint at all contraction levels due to a decrease in the short-latency stretch reflex. From a clinical point of view, the peripheral action of baclofen may be unfortunate. Spasticity is often accompanied by weakness, which may be the major cause of any disability. Consequently, reduction in spasticity by the central effect of baclofen may be counteracted by its influence on muscle properties. In addition, treatment of spasticity by baclofen may unmask weakness.

Adult↗
PubMed1981

[Fractures of the ankle joint and the astragalus. New aspects in diagnosis and treatment (author's transl)].

Five separate problems are discussed: additional lesions of the ankle joint in lower-leg fractures; posterior plate fixation of short oblique distal fibula fracture; reversed lag-screw fixation of small avulsed fragment of the medial malleolus; reduction of smaller posterior tibia lip fragment through the lateral malleolus; primary tibiotalar fusion in the most severe astragalar fractures.

Ankle Injuries↗
PubMedDate not supplied

Osteoarthrosis of the ankle joints in old rats.

The paper describes results of histological investigations on 26-month-old rats with osteoarthrosis of the ankle joints. From the morphological appearance a sequence of alterations from focal chondrocytic necroses, fibrillation to partial or total cartilage loss occurred. The reported changes were often present in opposing cartilage contact zones. A synovitis seems not to be involved in this cartilage destructive process. It is assumed that this spontaneously occurring osteoarthrosis can be used as a model to study the mechanisms leading to cartilage destruction. The model may further be useful to elucidate protective or detrimental effects of therapeutic substances.

Age Factors↗
PubMed1983

[Computed tomography in complex fractures of the ankle joint].

Diagnostic value of conventional roentgen technique and computed tomography is proofed by examination of 50 patients with sprain fractures of the ankle joint. The dimension of destruction of the distal tibial joint surface is better documented by CT than by other radiological techniques. Additional informations like multifragmentation of the distal tibia or evaluation of reposition impedigment are found more frequently by CT. Therefore indication and planning of the traumatherapy can be assessed better by the traumatologist.

Ankle↗
PubMed1988

[Models of the geometry of the human ankle bone pulley: two series of geometric models for demonstrating the biomechanics of the ankle joint].

2 series of models demonstrate the geometrical shape of the human trochlea tali. We have changed step by step the shape of the 2 flanking articular facets of the trochlea, the course of the edges of the trochlea, and the length of their radii, and so we have found a model responding to the biomechanic conditions of the trochlea tali. The convex surface of this model (corresponding to the superior articular surface, i.e. the facies superior trochleae tali) is a torse, the medial flanking facet (corresponding to the medial articular facet of the trochlea, i.e. the facies malleolaris medialis) is a flat cone, the lateral flanking facet (corresponding to the lateral articular facet of the trochlea, i.e. the facies malleolaris lateralis) is a screwed (helicoidal) face. The resulting model shows the 2 completely different phases of motion in the ankle joint: During dorsiflexion (motion setting out from the neutral position towards the final position of dorsiflexion), the internal malleolus leads the talus, whereas the external malleolus is pushed outwards by the screwed lateral articular facet of the trocheal. The trochlea is moved like a hinge. In the final position of dorsiflexion, the malleoli tightly embrace the 2 flanking facets of the trochlea, whilst an obvious cleft appears dorsally and medially between the superior articular surface of the trochlea and the tibial roof (i.e. the facies articularis inferior tibiae). During plantarflexion (motion setting out from the neutral position towards the final position of plantarflexion), the external malleolus leads the talus, whereas the medial articular facet of the trochlea withdraws from the internal malleolus. The trochlea is moved like a screw. In the final position of plantarflexion, the superior articular surface of the trochlea closely contacts the tibial roof, whilst an obvious cleft appears between the medial articular facet of the trochlea and the internal malleolus.

Ankle Joint↗
PubMed1992

[Stress on the upper ankle joint in tennis-specific forms of movement].

The permanently increasing number of injuries in tennis, which are mainly located at the lower extremity, indicates that the internal load e.g. applicated to the ankle during certain movements might be a critical factor. In the present study the relationship between calculated ankle load and muscle forces appearing during tennis techniques performed in a laboratorial setup and some varying parameters such as playing surface, footwear and individual differences in movement structure were investigated. It could be shown that on a felt tennis floor due to its frictional characteristics the midfootstriking subject produced the highest ankle load, while the heelstriking technique reduces the load as well as the change of the playing surface to a floor with loose granulate. In addition it should be considered that external forces (e.g. gained from a force plate) must not be used as predictors for internal load. The presented data show that the model-aided load calculation (MALC) from two trials with similar ground reaction forces leads to completely different values of e.g. the ankle-joint force.

Ankle Injuries↗
PubMed2004

Substance P immunoreactive nerve fibres in the domestic chick ankle joint before and after acute urate arthritis.

Substance P immunoreactive (SP-IR) nerve fibres were identified using fluorescence immunohistochemistry and the length of the labelled individual nerve fibres was measured using confocal microscopy of whole mounts of the lateral wall of the ankle joint in 2-week-old domestic chicks. In the normal ankle there was an extensive network of SP-IR fibres in the synovial and subsynovial tissue of the joint capsule. Fours hours after injection of sodium urate into the joint space the joint was inflamed and there was a significant reduction in the labelled nerve fibres. These results demonstrate experimentally that painful gouty arthritis produces a neurogenic depletion of substance P from peripheral nerve fibres in the synovial and subsynovial tissue.

Animals↗
PubMed1994

Radiation necrosis overlying the ankle joint after injection with yttrium-90.

A 35-year-old woman with rheumatoid arthritis presented with radiation necrosis and an open wound overlying her ankle joint, 8 months after injection with yttrium-90 to facilitate radiosynovectomy. This problem was successfully treated by surgical excision of the area of radiation damage and closure with a fasciocutaneous flap.

Adult↗
PubMed1984

The inverted Y approach to the talus and ankle joint.

A case of a comminuted fracture of the body of the talus and the medial malleolus is reported. The inverted Y approach was used to expose the talus and ankle joint, facilitating reduction and internal fixation.

Adolescent↗