QUESTIONS 1 of 2 1 2 Previous Next (OBQ14.9) Abnormal duplication of the zone of polarizing activity (ZPA) may lead to which of the following deformities? QID: 5419 FIGURES: A B C D E Type & Select Correct Answer 1 Figure A 62% (1648/2675) 2 Figure B 16% (440/2675) 3 Figure C 8% (212/2675) 4 Figure D 8% (224/2675) 5 Figure E 5% (131/2675) L 1 Question Complexity B Question Importance Select Answer to see Preferred Response SUBMIT RESPONSE 1 Review Tested Concept Review Full Topic (OBQ05.256) What is the most important variable when deciding between reconstruction versus ablation of a hypoplastic thumb? QID: 1142 Type & Select Correct Answer 1 contralateral thumb function 4% (166/4010) 2 thenar muscle function 8% (303/4010) 3 presence of an extensor pollicis longus tendon 3% (126/4010) 4 carpometacarpal joint stability 76% (3060/4010) 5 metacarpophalangeal joint stability 8% (338/4010) L 2 Question Complexity C Question Importance Select Answer to see Preferred Response SUBMIT RESPONSE 4 Review Tested Concept Review Full Topic