distal articular set angle

(redirected from Dasa)
Also found in: Acronyms, Wikipedia.

distal articular set angle

; DASA angle created by a line perpendicular to the effective cartilage of the proximal phalanx of the hallux and the longitudinal bisection of the proximal phalanx (allowing comparison of the planes of the articular surface of the head of the proximal phalanx and that of the base of the distal phalanx of the toe); normal DASA = 5-9° (see Table 1)
Table 1: Radiographic charting
AngleNormal rangeClinical features
Boehler's angle20-40°Angle between a line drawn from the superior-posterior aspect of the calcaneum and a line drawn from the anterior dorsal aspect of the calcaneum, on a lateral radiograph
Calcaneal inclination angleAngle between a line drawn to the undersurface of the calcaneum (on a lateral radiograph) and the support surface; the greater the calcaneal angle, the more supinated the rearfoot; the lower the angle, the more pronated the rearfoot
CYMA lineLazy S-shaped line that forms the midtarsal joint (talonavicular and calcaneocuboid joints) on a lateral radiograph; the smoothness of the CYMA line is lost in the excessively pronated or supinated foot
Hallux abductus angle0-20°Angle between the longitudinal bisection of the first metatarsal and the longitudinal bisection of the proximal phalanx of the hallux (on a dorsiplantar radiograph)
Hallux interphalangeal angle0-10°Angle between the longitudinal bisection of the proximal phalanx of the hallux and the longitudinal bisection of the distal phalanx of the hallux (on a dorsiplantar radiograph)
Lesser tarsal angle10°Angulation between the longitudinal bisection of the rearfoot and a longitudinal bisection of the lesser metatarsals (on a dorsiplantar radiograph). This angle is increased in a pronated foot, and decreased in a supinated foot
Metatarsus adductus angle10-20°Angle between the longitudinal axis of the second metatarsal and a line perpendicular to a line drawn from reference points on the medial cuneiform to the cuboid (on a dorsiplantar radiograph)
Metatarsus adductus primus angle8-10°Angulation between the bisections of the first and second metatarsal (on a dorsiplantar radiograph) >12° indicates pathology in a rectus foot; 10° indicates pathology in an adductus foot
Parallel pitch lines (PPLs)Lines drawn on a lateral radiograph of the foot: see Figure 1
PPL 1: a line drawn at the inferior margin of the calcaneum that joins the anterior tubercle and the medial tubercle of the posterior tuberosity of the calcaneum
PPL 2: a line drawn parallel to PPL 1 between the bursal projection (or posterior-superior prominence) at the superior margin of the calcaneum and the posterior lip of the talar articular facet
Divergent PPLs are characteristic of a foot with Haglund's deformity
Proximal articular set angle (PASA)0-8°Angle created between a line perpendicular to the longitudinal bisection of the first metatarsal and a line drawn to represent the effective articular cartilage of the head of the first metatarsal (on a dorsiplantar radiograph)
Superior calcaneal tuberosity angleAngle between the posterior tuberosity of posterior margin of the calcaneum and the anterior and medial tuberosities on the inferior margin of the calcaneum (on a lateral radiograph)
Talar declination angleAngle between the longitudinal bisection of the talus and the support surface (on a lateral radiograph); the nearer to the horizontal, the more supinated the rearfoot; the greater the declination of the talus, the more pronated the rearfoot (on a dorsiplantar radiograph)
Tibial sesamoid positionRelationship of the tibial sesamoid and the longitudinal bisection of the first metatarsal; the tibial sesamoid is normally medial to the first metatarsal bisection; christa erosion is likely where the tibial sesamoid abuts or crosses to the lateral part of the first metatarsal (on a dorsiplantar radiograph)
Total angle<75°Sum of the calcaneal inclination angle and superior calcaneal tuberosity angle see Figure 2

Biomechanical evaluation of plain radiographs is primarily made from dorsiplantar

Figure 1: Plantar fascia. MTP, metatarsophalangeal. This article was published in Neale's Disorders of the Foot, Lorimer, French, O'Donnell, Burrow, Wall. Copyright Elsevier, (2006).
Figure 2: Plantar fascia. MTP, metatarsophalangeal. This article was published in Neale's Disorders of the Foot, Lorimer, French, O'Donnell, Burrow, Wall. Copyright Elsevier, (2006).
Mentioned in ?
References in periodicals archive ?
The executive offices of DASA are located at Avenida Jurua, 434, Alphaville, Barueri, Sao Paulo, Brazil, and its telephone number is +55 11 4197-5500.
Eoe1/4EoAs parents, we have been putting lot of pressure on our children to concentrate only on the board exams so that they can score well enough to join NIT through the Dasa scheme, which was very much helpful for the aspirant NRIs,Eoe1/4A[yen] he pointed out.
Division Three: MAS 1 Melbourne H&B 6; Arriva Bus 3 Greystone 6; AC Croxteth 3 The Pear Tree 4; Woodstreet 6 Quarry Green 'A' 1; DASA Aintree 1 May Duncans 1.
A thought that came to my mind was the poor state and the low recognition of the Dasa Sil Matas in our country.
BAe, a partner of Dasa and Aerospatiale in the Airbus passenger jet consortium, has been invited to join moves towards making Airbus a company.
Specifically, through DASA, physicians in Brazil now have access to multiple genetic tests, including:
DASA Finance further announced that the withdrawal rights in the offer expired on the Early Tender Deadline.
Germany's DaimlerChrysler Aerospace, or DASA, which until recently had been expected to merge with British Aerospace, said the deal could make other defense mergers difficult and ``create an obstacle to European integration.
In conjunction with these upgrades, Fitch has assigned a foreign currency IDR of 'BB+' to DASA Finance Corporation.
Contract award: tower simulator for dasa (working world exhibition).
Individual tickets cost $150 per person and are available from DASA by calling (214) 485-2055, or emailing bmelton@dallasallsports.
No mention of Germany's role was made and the statement seems to contradict an earlier one made by Dasa, which indicated that no decision had been made about where the A3XX was to be constructed.