THE DEFORMITIES OF THE FINGERS AND TOES THE DEFORMITIES OF THE FINGERS AND TOES BY WILLIAM ANDERSON, F.R.C.S. SURGEON TO ST. THOMAS’S HOSPITAL; EXAMINER IN SURGERY AT THE UNIVERSITY OF LONDON, AND ROYAL COLLEGE OF SURGEONS OF ENGLAND; PROFESSOR OF ANATOMY IN THE ROYAL ACADEMY OF ARTS, ETC.; FORMERLY HUNTERIAN PROFESSOR OF SURGERY AND PATHOLOGY IN THE ROYAL COLLEGE OF SURGEONS [Illustration] LONDON J. & A. CHURCHILL 7 GREAT MARLBOROUGH STREET 1897 PREFACE The following pages are developed from a course of Hunterian Lectures delivered by the Author in the theatre of the Royal College of Surgeons, in 1891. The matter has been revised and brought up to date, and augmented by a section upon the congenital deformities of the hands and feet. WILLIAM ANDERSON. 2 HARLEY STREET, W. _March 1897._ CONTENTS SECTION I CONTRACTIONS OF THE FINGERS PAGE INVOLVING THE DIGITAL AND PALMAR FASCIÆ (DUPUYTREN’S CONTRACTION) 4 FROM DEVELOPMENTAL IRREGULARITIES IN THE BONY AND LIGAMENTOUS ELEMENTS OF THE ARTICULATIONS 44 FROM UNBALANCED ACTION OF THE FLEXOR MUSCLES AFTER RUPTURE, DIVISION, OR DESTRUCTION OF THE EXTENSOR TENDON 63 FROM NUTRITIVE CHANGES IN THE MOTOR APPARATUS 65 FROM TENDO-VAGINITIS OF THE BURSAL SHEATH OF THE FLEXOR TENDONS 67 FROM INFLAMMATORY AND DEGENERATIVE CHANGES IN THE ARTICULAR STRUCTURES 68 PARALYTIC AND SPASTIC CONTRACTIONS FOLLOWING LOCAL INJURY 70 CONGENITAL AND INFANTILE CONTRACTIONS 77 TRIGGER FINGER 78 SECTION II CONTRACTION OF THE TOES FROM PATHOLOGICAL LESIONS IN THE CUTANEOUS AND FASCIAL STRUCTURES 86 FROM DEVELOPMENTAL IRREGULARITIES IN THE ARTICULAR STRUCTURES AND COMPRESSION BY MISSHAPEN SHOES 87 HAMMER TOE 88 HALLUX FLEXUS 104 HALLUX VALGUS 115 HALLUX VARUS 120 LATERAL DEVIATION OF THE LESSER TOES 122