OBJECTIVE: To find out the characteristics of foot pressure in children with mild spastic diplegic cerebral palsy over 7 years old compared with those of normal children. METHOD: Twenty children with mild spastic diplegic cerebral palsy and fourteen normal children over 7 years old articipated in this study. The foot was divided into 7 portions and then foot contact area, pressure of each foot portion and pathway of center of pressure (COP) were measured and analyzed by F-scan system (Tekscan Inc., USA) RESULTS: In children with cerebral palsy, first metatarsal area MET1) showed the highest relative impulse followed by MET2/3, hindfoot and hallux. Relative impulse of hallux, MET1 and medial midfoot were significantly higher in cerebral palsied than in normal children, while that of hindfoot was significantly lower in cerebral palsied than in normal children. Anteroposterior ratio of COP and gait velocity were significantly lower in cerebral palsied than in normal children. CONCLUSION: The characteristics of foot pressure distribution and the pathway of COP in children with mild spastic diplegic cerebral palsy were identified by quantitative analysis by F-scan system. Foot scan could be used for eval uating the foot pathology in children with cerebral palsy during gait.
Cerebral Palsy* ; Child* ; Foot* ; Gait ; Hallux ; Humans ; Metatarsal Bones ; Muscle Spasticity* ; Pathology

Reflex sympathetic dystrophy (RSD) is a common rheumatic disorder manifesting painful swelling, discoloration, stiffening and atrophy of the skin. Radiographic alterations include small, spotty subperiosteal bone resorption (SBR) and diffuse porosis, and MR imaging shows bone and soft-tissue edema. The purposes of current investigation were to assess 99mTc HDP pinhole SPECT (pSPECT) findings of RSD, to correlate them with those of radiography and MRI and to speculate about causative mechanism of SBR which characterizes RSD. pSPECT was performed in five patients with RSD of the foot. pSPECT showed small, discrete, spotty hot areas in the subperiosteal zones of ankle bones in all five patients. Diffusely increased tracer uptake was seen in the retrocalcaneal surface where the calcaneal tendon inserts in two patients with atrophic RSD. pSPECT and radiographic correlation showed spotty hot areas, that reflect focally activated bone turnover, to closely match with SBR. Further correlation with MRI showed both spotty hot areas and SBR to coincide in location with the insertions of ligaments and tendons, onto which pulling strain is constantly exerted. In contrast, the disuse osteoporosis in unstrained bones did not show any more significantly increased tracer uptake than normal cancellous bones.
Adult ; *Bone Resorption ; Bone and Bones/pathology ; Edema ; Female ; Foot Bones/pathology ; Foot Diseases/pathology ; Human ; Image Processing, Computer-Assisted ; Magnetic Resonance Imaging/*methods ; Male ; Middle Aged ; Osteoporosis/pathology ; Reflex Sympathetic Dystrophy/*pathology ; Technetium/*pharmacology ; Tomography, Emission-Computed, Single-Photon/*methods

OBJECTIVE: To analyze radiological characteristics of Muller-Weiss disease, evaluate the clinical value of the imaging examination in diagnosis of Muller-Weiss disease. METHODS: The imaging data of 26 patients with Muller-Weiss disease were collected from September 2015 to August 2020, including 7 males and 19 females, aged 43 to 68 years old with an average of (52.7±4.6) years old. In the X-ray examination observed the shape and position of the navicular bone. The talar-first metatarsal angle(TFM) was measured on the weight-bearing anteroposterior radiograph. The arch angle and angle between mid-axis of talus and mid-axis of the first metatarsal(Meary angle) were measured on the weight-bearing lateral radiographs. The morphology, density, adjacent joint space and position of the navicular bone were evaluated by computed tomography(CT), and magnetic resonance imaging(MRI) was used to observe the shape, signal, cartilage and surrounding soft tissue changes of the navicular bone. RESULTS: Among 26 patients, 21 cases were unilateral and 5 cases were bilateral;X-ray examination showed that the lateral part of navicular bone of foot was compressed and flattened, showing"comma like"or"drop like", navicular moved to the medial side, partial fragmentation of bone, peripheral articular hyperplasia, uneven density and narrowing of relationship gap. According to Meary angle and deformity degree of the affected foot on the lateral X-ray of the load-bearing foot, Maceira staging was performed. There were 0 cases in stageⅠ, 2 cases in stage Ⅱ, 11 cases in stage Ⅲ, 9 cases in stage Ⅳand 4 cases in stage Ⅴ. CT examination showed bone fragmentation, medial displacement of navicular bone and formation of the talocalcaneal joint. MRI examination showed the irregular shape and uneven signal of navicular bone, narrowing of joint space, talocalcaneal joint surface hyperplasia and cartilage destruction, tarsal joint effusion and swelling of surrounding soft tissue. CONCLUSION Muller-Weiss disease has specific imaging manifestation, and an accurate diagnosis can be made based on the patient's age, gender, and clinincal history. Preoperative imaging examination can stage the disease, help clinicians to formulate better surgical plans, and postoperative imaging examination can better evaluate the surgical effect.
Adult ; Aged ; Bone Diseases/diagnostic imaging* ; Cartilage Diseases ; Female ; Foot Diseases/diagnostic imaging* ; Humans ; Hyperplasia/pathology* ; Male ; Middle Aged ; Talus/pathology* ; Tarsal Bones/surgery* ; Tarsal Joints

A case of 17 years old male with KPP of Tbost-Unna Type is reported. The akin lesions were characterized by the presence of confluent, sharply demarcated hyperk eratotic plaques on the palmar and plantar surfaces. Hypercontraction of palms and soles and hyperhidro is of scalp, face, palms and soles were also noted. Roentogenologic study revealed secondary changes of osteoporosis, flexion deformity and osteoarthritis due to soft tissue contracture and phalangeal and metatarsal bones of hands and feet showed bony resorption with tapering appearance. Histalogic findings of palmar lesion showed excessive hyperkeratosis, parakeratosis and acantosis in the epidermis and no pathology was noted in the dermis and skin appendages, He was treated with hot water compress, 5% Salicylic acid ointment and vit. A and D for 2 months and favorable effect was noted. Authors reviewed relevant literature and made discussions also.
Adolescent ; Betazole ; Congenital Abnormalities ; Contracture ; Dermis ; Epidermis ; Foot ; Hand ; Humans ; Keratoderma, Palmoplantar* ; Keratosis* ; Male ; Metatarsal Bones ; Osteoarthritis ; Osteoporosis ; Parakeratosis ; Pathology ; Salicylic Acid ; Scalp ; Skin ; Water

Pain is a major symptom in cancer patients, and most cancer patients with advanced or terminal cancers suffer from chronic pain related to treatment failure and/or tumor progression. In the present study, we examined the development of cancer pain in mice. Murine hepatocarcinoma cells, HCa-1, were inoculated unilaterally into the thigh or the dorsum of the foot of male C3H/HeJ mice. Four weeks after inoculation, behavioral signs were observed for mechanical allodynia, cold allodynia, and hyperalgesia using a von Frey filament, acetone, and radiant heat, respectively. Bone invasion by the tumor commenced from 7 days after inoculation of tumor cells and was evident from 14 days after inoculation. Cold allodynia but neither mechanical allodynia nor hyperalgesia was observed in mice that received an inoculation into the thigh. On the contrary, mechanical allodynia and cold allodynia, but not hyperalgesia, were developed in mice with an inoculation into the foot. Sometimes, mirror-image pain was developed in these animals. These results suggest that carcinoma cells injected into the foot of mice may develop severe chronic pain related to cancer. This animal model of pain would be useful to elucidate the mechanisms of cancer pain in humans.
Animals ; *Behavior, Animal ; Bone and Bones/pathology ; Carcinoma, Hepatocellular/pathology ; Cell Line, Tumor ; Cold ; Disease Models, Animal ; Foot ; Liver Neoplasms/pathology ; Male ; Mice ; Mice, Inbred C3H ; Neoplasm Invasiveness ; Neoplasm Transplantation ; Neoplasms/*complications ; Pain/*etiology/physiopathology/*psychology ; Pain Threshold ; Physical Stimulation ; Research Support, Non-U.S. Gov't ; Thigh