contracted pelvis Flashcards
1
Q
Definition
A
- is 1 in which an imp diameter is 1cm less than that of the gynecoid pelvis
- it may be generally contracted in wh pelvis has normal configuration but all measurements r ↓ in proportion
2
Q
Diagnosis
A
can be diagnosed by
1. pelviometry + VE
● Measure conjugate diagonalis by VE
● Palpate sacral curvature + length, sacrococcygeal junction + mobility, thickness n prominence of ischial spine
● Subpubic angle is estimated ( N ≥ 90º )
● Inter-tuberous diameter ( N = width of fist )
2. X-ray pelvimetry
3
Q
Classification
A
- 4 basic types
● Gynecoid
● Android
● Anthrapoid
● Platypelloid – simplex, ricketicus - acc º of narrowing ( conjugate vera / CV / true conjugate )
● 1st º - 9.5 – 11cm
● 2nd º - 7.5 – 9.5cm
● 3rd º - 7.5 – 6.5cm
● 4th º - < 6.5cm
4
Q
differentiation fr clinically contracted pelvis
A
- contracted pelvis r clinically deformed eg absence of sacral ala, sacral shortening on 1 side
- contracted pelvis r associated w
● bone disease eg TB, OM
● trauma
● nutritional deficiency eg osteomalacia, Rickets