Carpal Bone Malunions and Nonunions
Carpal Bone Malunions and Nonunions Paul C. Baldwin III John R. Fowler INTRODUCTION Mechanism of injury Scaphoid fractures occur most commonly from a fall onto the outstretched hand, resulting in…
Hamate Body Fracture
Hamate Body Fracture Kenrick C. Lam Andrew Coskey Niki L. Carayannopoulos INTRODUCTION Pathoanatomy Hamate is a triangular prism-shaped bone in the coronal plane with a large anterior-sided process, the hook…
Hook of Hamate Fractures
Hook of Hamate Fractures Katherine M. Dederer Reid W. Draeger INTRODUCTION Incidence and epidemiology Hook of hamate fractures are estimated at 2% of all carpal fractures1 Likely underreported due to…
Pisiform Fractures
Pisiform Fractures Mikael Starecki James R. Mullen INTRODUCTION Anatomy The pisiform is a pea-shaped sesamoid bone within the tendon of the flexor carpi ulnaris (FCU). Attaches to FCU proximally Distally…
Digital Collateral Ligament Injury
Digital Collateral Ligament Injury Steven T. Lanier Michael S. Gart INTRODUCTION Thumb metacarpophalangeal (MP) ulnar collateral ligament (UCL) (note: thumb radial collateral ligament [RCL] injuries are managed similarly and are…
Scaphoid Fractures
Scaphoid Fractures Adam S. Martin Hisham M. Awan INTRODUCTION The scaphoid is the most commonly fractured carpal bone. Although the scaphoid is named for its resemblance to a boat shape…
Perilunate Dislocations
Perilunate Dislocations Michael Moustoukas Nileshkumar M. Chaudhari INTRODUCTION Overview High-energy injury resulting in dislocation of capitate while lunate remains in lunate fossa. Dorsal dislocation is most common Carpal instability complex…
Malunion and Nonunion of Fingers and Hand
Malunion and Nonunion of Fingers and Hand Tiffany Y. Wu John R. Fowler INTRODUCTION Pathoanatomy Malunions are usually multiplanar, though one component is predominant. Nonunions are rare (0.2%-0.7% incidence) and…
Metacarpal Fractures
Metacarpal Fractures Joseph A. Rosenbaum Hisham M. Awan INTRODUCTION Pathoanatomy Fractures of the bones of the hand typically secondary to trauma Force applied to the affected bone exceeds its strength….
Thumb Collateral Ligament Injury
Thumb Collateral Ligament Injury James Paul Hovis Ngozi Mogekwu Akabudike INTRODUCTION Pathoanatomy Primary arc of thumb metacarpophalangeal (MCP) joint motion is flexion/extension with minor arcs of abduction/adduction and pronation/supination. The…
