Effect of Acupuncture as Seen in Stress Radiography of the Ankle

1995 ◽  
Vol 13 (1) ◽  
pp. 2-4 ◽  
Author(s):  
Saila Eksymä-Sillman ◽  
Ilkka Suramo ◽  
Seppo YT Junnila ◽  
Valtteri Myllylä
Keyword(s):  
Ankle Joint ◽  
Ankle Instability ◽  
False Negative ◽  
Muscle Spasm ◽  
Stress Radiography ◽  
Negative Finding ◽  
Tibiotalar Joint ◽  
Asymptomatic Volunteers ◽  
False Negative Finding

When studying ankle instability by stress radiography, pain and muscle spasm can prevent maximal widening of the tibiotalar ankle joint and cause a false negative finding. We examined the effect of acupuncture on widening of the tibiotalar joint during stress radiography in a series of 12 asymptomatic volunteers and 12 patients. The width of the tibiotalar joint increased in 66% of the volunteers. The diagnosis changed for two patients and became more confident for four others (50%).

scholarly journals The Role of Calcaneofibular Ligament (CFL) Injury in Ankle Instability

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0002
Author(s):  
Kenneth Hunt ◽  
Richard Fuld ◽  
Judas Kelley ◽  
Nicholas Anderson ◽  
Todd Baldini
Keyword(s):  
Contact Mechanics ◽  
Ankle Joint ◽  
Motion Capture ◽  
Contact Area ◽  
Subtalar Joint ◽  
Ankle Instability ◽  
Weight Bearing ◽  
Calcaneofibular Ligament ◽  
Tibiotalar Joint ◽  
Ankle Stability

Category: Ankle Introduction/Purpose: Acute inversion ankle sprains are among the most common musculoskeletal injuries. Higher grade sprains, which include anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) injury, can be particularly problematic and often require surgical repair. The implications of CFL injury on ankle instability are unclear. We aim to evaluate the impact of CFL injury on ankle stability and subtalar joint biomechanics. We hypothesized that CFL injury will result in decreased stiffness and torque, and alteration of ankle contact mechanics compared to the uninjured ankle in a cadaveric model. Methods: Twenty matched cadaveric ankles dissected of skin and subcutaneous tissue were mounted to an Instron with 20° of ankle plantar flexion and 15° of internal rotation. Intact specimens were axially loaded to body weight, then underwent inversion stress along the anatomic axis of the ankle from 0 to 20° (simulating inversion injury) for three cycles. ATFL and CFL were sequentially sectioned, and inversion testing repeated for each condition. Stiffness and change in torque were recorded using an Instron, and pressure and contact area were recorded using a calibrated Tekscan sensor system. Inversion angle of the talus and calcaneus relative to the ankle mortise were recorded using a three-dimensional motion capture system. Paired t tests were performed for inter and intra-group comparisons. Results: Stiffness and torque did not significantly decrease after sectioning of the ATFL, but did decreased significantly after sectioning of CFL. Peak pressures in the tibiotalar joint decreased significantly following CFL release compared to both the uninjured ankle and ATFL-only release. Mean contact area significantly increased following CFL release compared to both the uninjured ankle and ATFL release. There was a concentration of force in the anteromedial ankle joint during weight-bearing inversion. However, the center-of-force shifts 1.22 mm posteromedial after CFL release relative to an intact ankle. Motion capture showed a significant and sequential increase in inversion angle of both the calcaneus and talus, after release of each ligament. There was significantly more inversion in the subtalar joint than the tibiotalar joint with weight-bearing inversion. Conclusion: There is significantly lower stiffness and torque with weight-bearing inversion of the ankle joint complex following injury to both ATFL and CFL, and sequentially greater inversion of the talus and calcaneus with progressive ligament injury. This corresponds to a significant shift in the center of force in the tibiotalar joint. CFL contributes considerably to lateral ankle stability, and sprains that include CFL injury result in substantial alteration of contact mechanics at the ankle and subtalar joints. Repair of CFL may be beneficial during lateral ligament reconstruction, potentially mitigating long-term consequences (e.g., articular damage) of a loose or incompetent CFL.

A near false-negative finding of mosaic trisomy 21—a cautionary tale

1998 ◽  
Vol 18 (7) ◽  
pp. 742-746 ◽  
Author(s):  
G. C. Beverstock ◽  
Kerstin Hansson ◽  
Apollonia T. J. M. Helderman-Van Den Enden ◽  
Annette Bröcker-Vriends ◽  
F. Klumper ◽  
...  
Keyword(s):  
Trisomy 21 ◽  
False Negative ◽  
Cautionary Tale ◽  
Negative Finding ◽  
False Negative Finding ◽  
Mosaic Trisomy

Another false-negative finding on placental sampling

1988 ◽  
Vol 8 (4) ◽  
pp. 321-321 ◽  
Author(s):  
A. Wirtz ◽  
H. Seidel ◽  
E. Brusis ◽  
J. Murken
Keyword(s):  
False Negative ◽  
Negative Finding ◽  
False Negative Finding

FALSE-NEGATIVE FINDING ON CHORIONIC VILLUS SAMPLING

The Lancet ◽  
1986 ◽  
Vol 328 (8503) ◽  
pp. 391-392 ◽  
Author(s):  
S.Z. Eichenbaum ◽  
E.J. Krumins ◽  
D.W. Fortune ◽  
J. Duke ◽  
AliceO. Martin ◽  
...  
Keyword(s):  
False Negative ◽  
Chorionic Villus ◽  
Chorionic Villus Sampling ◽  
Negative Finding ◽  
False Negative Finding
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