SAGE Publications
0198-0211
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Kinematics of the Ankle/Foot Complex: Plantarflexion and DorsiflexionIn an in vivo investigation of eight healthy volunteers, three dimensional ankle/foot kinematics were analyzed by roentgen stereophotogrammetry in 10° steps of motion from 30° of plantar flexion to 30° of dorsiflexion of the foot. The study included all of the joints between the tibia and the first metatarsal, as well as the talocalcaneal joint, and was performed under full body load. Alth... ...
Tập 9 Số 4 - Trang 194-200 - 1989
In Vitro Determination of Midfoot Motion Midfoot motion was determined using an in vitro model. Ten fresh-frozen below-the-knee amputation specimens were instrumented by inserting reference pins into each of the bones of the hindfoot, midfoot and metatarsals. Dorsiflexion-plantar flexion and supination-pronation were simulated and the reference pin location in three dimensional space was determined. Comparing the location of the... ...
Tập 10 Số 3 - Trang 140-146 - 1989
Kinematics of the Ankle/Foot Complex—Part 2: Pronation and SupinationThe influence of pronation and supination of the foot on the joints of the ankle/foot complex was analyzed three dimensionally by roentgen stereophotogrammetry in eight healthy volunteers. Radiopaque markers were introduced into the tibia, talus, calcaneus, navicular, medial cuneiform, and first metatarsal bones. The subjects stood on a platform that was tilted in 10°-steps from 20° of pro... ...
Tập 9 Số 5 - Trang 248-253 - 1989
Stenosing Tenosynovitis of the Flexor Hallucis Longus Tendon and Posterior Impingement upon the Os Trigonum in Ballet Dancers The problems of flexor hallucis tendonitis and os trigonum syndrome in dancers are presented. The mechanism of injury, diagnosis, treatment, and rehabilitation are outlined. Pitfalls in diagnosis are discussed as well as prognosis for return to dance class and the stage. The best surgical access to the os trigonum is a lateral approach.
Tập 3 Số 2 - Trang 74-80 - 1982
Evolution of the Human Foot: Evidence from Plio-Pleistocene HominidsThe human foot serves a dual role during locomotion. It functions at times as a mobile structure and at times as a rigid lever. The human foot shows the hallmarks of an arboreal heritage wherein the foot was primarily a grasping organ. Over the course of the human career the human foot has evolved an elaborate plantar aponeurosis, strong plantar ligaments, longitudinal arches, an enlarged ... ...
Tập 3 Số 6 - Trang 365-376 - 1983
The Arterial Anatomy of the Talus The extraosseous and intraosseous vascularity of the talus was studied in 26 fresh cadaver limbs. The specimens were injected with latex or Batson's compound, debrided by a nondissection technique, and cleared by a modified Spalteholz method. The extraosseous vascularity was through the branches of the three major regional arteries which entered the five nonarticulating surfaces of the bo... ...
Tập 4 Số 2 - Trang 64-72 - 1983
The Measurement of Pressures under the Foot An apparatus is described which gives a rapid and detailed picture of the distribution of pressure under the foot, this being displayed either as a continuous grey scale or a color contour map on a television monitor. Automatic analysis systems are outlined which enable the quantitation of the distribution of pressures and loads under the foot during standing and walking, utilizing comput... ...
Tập 3 Số 3 - Trang 130-141 - 1982
Kinematics of the Ankle/Foot Complex—Part 3: Influence of Leg RotationIn an in vivo kinematical investigation, the movements of the ankle/foot complex induced by external rotation of the leg from an internally rotated position were analyzed by roentgen stereophotogrammetry. Radiopaque markers were introduced into the tibia, talus, calcaneus, navicular, medial cuneiform, and first metatarsal bones of eight healthy volunteers. Rotations occurring between these... ...
Tập 9 Số 6 - Trang 304-309 - 1989
Selective Tarsal Arthrodesis: An in Vitro Analysis of the Effect on Foot Motion Five different intertarsal arthrodeses were simulated in 15 fresh cadaver feet/ankles utilizing external fixation. Pin placement was verified radiographically. Range of motion measurements were performed before pin placement, after pin placement, and after simulated arthrodesis. The deficit in foot motion created by selected limited intertarsal fusions was then measured. ... ...
Tập 8 Số 3 - Trang 127-133 - 1987
Triple Arthrodesis: A Long-term Study with Force Plate Analysis This study evaluated triple arthrodesis at late follow-up using the liquid crystal force plate and standard clinical methods. Twenty-four patients with 36 triple arthrodeses were followed-up at an average of 8 ± 2 years. Fifty-eight per cent of patients achieved an ideal or good rating with 11% failures. Failures were due to inadequate surgical correction of varus deformity. Seven per cen... ...
Tập 2 Số 1 - Trang 15-24 - 1981