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At least 973 records · Page 54Linked to original sources
PubMed1984

Width of the normal ankle joint.

An investigation of the talocrural joint was performed in 160 normal adults, 80 males and 80 females. The joint space was measured on films at six locations, three in the antero-posterior and three in the lateral view of the ankle. The average joint space in men was 3.4 mm and in women 2.9 mm, which is a significant difference (p less than 0.001). The joint space was wider in the medial part when evaluating the antero-posterior view, but did not change with age.

Adolescent↗
PubMed2004

The effect of the ankle joint angle in the level of soleus Ia afferent presynaptic inhibition.

The factors that are responsible for the relationship between motoneuron excitability and muscle length may have both mechanical and/or neurophysiologic origins. The aim of the study was to investigate the changes in the level of presynaptic inhibition, as measured with a soleus H-reflex conditioning protocol, and muscle length. Ten healthy volunteers were measured at three different ankle angles: 30 degrees plantar flexion, neutral position (0 degrees) and 15 degrees dorsiflexion. At each position the soleus H-reflex and the maximum M-wave were measured while the limb was relaxed. The H-reflex was conditioned by a stimulation of the common peroneal nerve, 100 ms prior to the tibial nerve stimulation. The results revealed that the level of presynaptic inhibition was higher at the neutral position in comparison to the dorsiflexed or plantarflexed positions. Additionally, the HMAX/MMAX ratio was significantly decreased when the joint position was set at dorsiflexion. Further, there was a significant correlation, independent of ankle joint angle, between presynaptic inhibition levels and the HMAX/MMAX ratio. The above findings support the concept that peripheral feedback from passive, static modifications in the joint angle and consequently in muscle length, can modify the input/output threshold of the motoneurons on a presynaptic level.

Adult↗
PubMed2006

The initial safe range of motion of the ankle joint after three methods of internal fixation of simulated fractures of the medial malleolus.

BACKGROUND: Previous studies have demonstrated the safe passive range of ankle motion for inter-bone stiffness after internal fixation under load but there is a lack of information about the safe range of ankle motion for early rehabilitation in the absence of loading. The present study was designed to assess the effect of ankle movement on inter-bone displacement characteristics of medial malleolus fractures following three types of internal fixation to determine the safe range of motion. METHODS: Five lower legs obtained during autopsy were used to assess three types of internal fixation (two with Kirschner-wires alone; two with Kirschner-wires plus tension band wiring; and, one with an AO/ASIF malleolar screw alone). Following a simulated fracture by sawing through the medial malleolus the displacement between the fractured bone ends was measured during a passive range of movement with continuous monitoring using omega (Omega) shaped transducers and a biaxial flexible goniometer. Statistical analysis was performed with repeated measures analysis of variance. FINDINGS: Inter-bone displacement was not proportional to the magnitude of movement throughout the range of ankle motion as, when separation exceeded 25 microm, there was increasingly wide separation as plantar-flexion or dorsal-flexion was increased. There was no statistical significant difference between the small amount of inter-bone displacement observed with three types of fixation within the safe range of dorsal-flexion and plantar-flexion for early rehabilitation. However the inter-bone separation when fixation utilized two Kirschner-wires alone tended to be greater than when using the other two types of fixation during dorsal-flexion and eversion. INTERPRETATION: The present study revealed a reproducible range of ankle motion for early rehabilitation which was estimated to be within the range of 20 degrees of dorsal-flexion and 10 degrees of plantar-flexion without eversion. Also, internal fixation with two Kirschner-wires alone does not seem to provide stability achieved by the other two forms of fixation.

Ankle Injuries↗
PubMed1983

[Late results following surgical treatment of ruptured ligaments of the upper ankle joint in children].

At the Department of Paediatric Surgery of the University of Zürich, severe distorsions with ruptures of the lateral ligaments of the ankle were operated upon since 1975. The indication for surgical repair was a subluxation of the talus in the antero-posterior x-ray of more than 10 degrees compared with the opposite side during the classical manoeuvre of supination of the forefoot. The late results of 46 of the 55 patients, aged 4 to 15 years, are presented 1 to 5 years after surgery. 33 (71.7%) were completely free of symptoms and very active in sports. 9 (19.6%) had occasionally slight complaints, especially during changes of weather etc. 4 (8.7%) complained about severe pain around the ankle and had about one painful distorsion a week. The x-ray control showed an excellent stability of the lateral ligament in 91.3%. Only 4 patients (8.7%) had a subluxation of the talus over 10 degrees. The 4 patients with severe pain were transferred to an orthopaedic surgeon for an active stabilisation procedure. Our operative results are by far better than other series with conservative treatment. We think, therefore, that severe ruptures of the ankle should be treated surgically.

Adolescent↗
PubMed1990

[Arthroscopic abrasion arthroplasty of the upper ankle joint. Long-term results in osteochondrosis dissecans].

From January 1984 to June 1987, a total of 27 patients received arthroscopic treatment to the ankle to remove cartilage fragments and curet the osteochondral bed, and control arthroscopy was possible after 4 months in 4 cases. Particular attention is paid in this report to 11 patients with a total of 13 lesions of the talar dome (stage III/IV according to Brandt/Harty), with discussion of the etiology, the treatment and the long-term postoperative results. On follow-up at 2 years, the results were assessed both subjectively and objectively as good in 7 and fair in 4 of these patients. The advantages of arthroscopic treatment over open surgery and arthrotomy are less severe traumatism, a lower complication rate and faster rehabilitation.

Adult↗