The Hip - book

Joint Depression Calcaneal Fracture

– Discussion: – there is a transverse fracture in the coronal calcaneal plane that occurs between the posterior facet and the Achilles insertion; – hence, the secondary fracture line extends from crucial angle of Gissane to posterior border of calaneus, exiting on superior surface of calcaneus (posterior to posterior margin of posterior facet); – the posterior … Read more

Jones Fracture

– See: Midfoot/Forefoot Fractures – Discussion: – involves frx at base of fifth metatarsal at metaphyseal-diaphyseal junction, which typically extends into the 4-5 intermetatarsal facet; – Jones frx is located w/in 1.5 cm distal to tuberosity of 5th metatarsal & should not be confused w/ more common avulsion frx of 5 th metatarsal styloid; – … Read more

Intramedullary Nailing of Femoral Shaft Frx

– See:         – Distal Femoral Shaft Fractures         – Infected IM nails         – Open Fractures         – Proximal Femoral Shaft Fractures         – Synthes IM Femoral Nail – Discussion: Intramedullary Nailing:     – closed IM nailing has supplanted other forms of treatment  for femur frx;     – it affords predictable realignment of bone, rapid regeneration … Read more

Intrinsic Muscles of the Hand

– See:       – Dorsal Interossei       – Lumbricals:       – Palmar Interossei – Hypothenar Eminence:     – muscles of hypothenar eminence are  abductor, flexor, opponens digiti minimi, & palmaris brevis;     – muscles of hypothenar eminence are innervated by ulnar nerve; – Thenar Eminence:     … Read more

Intrinsic Tightness and the Intrinsic Plus Hand

– See:     – Intrinsic Muscles: – Discussion:     – results from intrisic stiffness (contracture);     – specific causes:            – truama:                – posttraumatic intrinsic contractures may occur after severe injuries to hand that have resulted in considerable                        edema or … Read more

Intrinsic Weakness and Claw Hand

– Discussion: – claw hand deformity is manifested by flattening of the transverse metacarpal arch and longitudinal arches, with hyperextension of MCP joints and flexion of the PIP and DIP joints; – deformity is produced by imbalance of the intrinsic & extrinsics; – intrinsic muscles must be markedly weakened or paralyzed to produce claw deformity; … Read more

Intramedullary Hip Screw for Intertrochanteric Fractures

 – Discussion: (see IM Nailing of subtrochanteric fractures)     – a type of intramedullary device (designed for intertrochanteric and subtrochanteric fractures) which allows               controled sliding of the femoral head screw within the IM nail glidign hole;     – advantages of IM device:               – IM nail with interlocking reconstruction … Read more

Interspinales

origin and insertion: pairs of small muscles joining the spinous process of adjacent vertebrae, one on each side of the interspinalis ligament; continuous in the cervical region extending from the axis to the 2nd thoracic vertebrae and in the lumbar region from the first lumbar vertebrae to the sacrum; action: extension and hyperextension of the spine; nerve … Read more