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Arterial Injury
Can be caused by blunt or sharp injury.
 Blunt may be more dangerous because less obvious.
Absolute indications for arteriogram. Pain, pallor, paralysis, paresthesia, pulselessness, hemorrhage, expanding hematoma, bruits.
Penetrating trauma in proximity to a vessel is not necessarily an indication for arteriogram.
Arterial pressure index (arterial pressure in injured limb divided by arterial pressure in unaffected limb). Good screening: if >0.90, can safely observe in the absence of other indications for arteriography.
Shotgun injuries are a high-risk category and should be studied with arteriography.
Compartment Syndrome
Caused especially by crush injuries, electrical burns, circumferential scars, tight casts, hematoma in compartment, snake bites, and anything else that can increase pressure in a compartment.
Can result in muscle, nerve, and vessel necrosis from hypoperfusion.
Clinical presentation.
Severe, constant pain in affected limb.
Pain on muscle palpation, passive stretch, active contraction.
Paresthesia and loss of distal pulses are late signs and herald poor outcome.
Compartment may be tense, but a normal turgor does not rule out compartment syndrome. Can diagnose by manometry:
Normal tissue pressure less than 10 mg Hg.
Capillary blood flow compromised at 20 mm Hg.
At risk ischemic necrosis above 30 mm Hg.
Treatment is by fasciotomy and requires surgical consultation immediately.
Amputations
Control bleeding with direct pressure. Avoid clamping vessels.
Place severed part in saline-soaked gauze, place in plastic bag, and put in cooler with ice. Avoid freezing part.
Refer to plastic or orthopedic surgery.
Fractures
Types
Closed fracture. Fracture that does not communicate with the outside.
Open fracture. Fracture that communicates with the external environment.
Comminuted fracture. Consisting of three or more fragments.
Avulsion fracture. Fragment of bone pulled from its normal position by a muscular contraction or resistance of a ligament.
Greenstick fracture. Incomplete angulated fracture of a long bone, particularly in children.
Torus fracture. Compression of the bone without cortical disruption. Seen especially in the forearms of children.
Epiphyseal Plate Fractures
Described using the Salter and Harris classification (Fig. 6-3).
Salter I (approximately 6%).
Separation of the epiphysis from the metaphysis without evidence of a metaphyseal fragment.
Usually the result of a shearing force, can be associated with birth injury.
Most common in infants and young children.
High index of suspicion is necessary because spontaneous reduction can occur.
Prognosis is excellent because epiphyseal blood supply is usually intact and growing cells of epiphyseal plate are undisturbed.
Salter II (approximately 75%).
Fracture extends transversely through the epiphyseal plate and then out through the metaphysis on the side opposite the fracture initiation resulting in a triangular metaphyseal fragment.
Most frequent in children over 10 years of age.
Usually treated with closed reduction.
Prognosis is excellent because the blood supply is almost always intact.
Salter III (8%).
Intra-articular fracture that extends from the joint surface across the epiphysis to the epiphyseal plate and out to the periphery.
Commonly involves the lower tibial epiphysis.
Caused by an intra-articular shearing force.
Often requires open reduction.
Prognosis is good if the blood supply is intact and reduction is maintained.
Salter IV (10%).
Intra-articular fracture consisting of a vertical fracture through the epiphysis that crosses the epiphyseal plate and leaves through a portion of the metaphysis.
Frequently involves lateral condyle of humerus.
Treated with anatomic reduction and internal fixation.
Prognosis is poor unless reduction is maintained.
Salter V (1%).
Results from a crush injury through the epiphysis to a portion of the epiphyseal plate.
Usually occurs in a joint that has only one plane of movement.
Most commonly seen in the knee and ankle.
Initial radiographs tend to be normal and so must suspect this fracture from the mechanism of injury.
Results are poor with premature cessation of growth.
Nontraumatic events causing a Salter V type of injury are metaphyseal osteomyelitis and epiphyseal aseptic necrosis.
Salter V can occur in conjunction with Salter I, II, and III fractures and not be recognized until growth arrest occurs.
Treat with 3 weeks of no weight bearing.
Repair
A good rule of thumb is that most bones join in 6 to 8 weeks; lower limb bones may take longer; fractures in children may take less time.
Complications
Immediate complications, within the first few hours, include hemorrhage, damage to arteries, and damage to surrounding soft tissues.
Early complications, within the first few weeks, include wound infection, fat embolism, shock lung, chest infection, DIC, and exacerbation of general illness. May also have compartment syndrome from casting.
Late complications, months and years later, include deformity, osteoarthritis of adjacent or distant joints, aseptic necrosis, traumatic chondromalacia, and reflex sympathetic dystrophy.
Management of Some Specific Fractures
Fracture of radial head. Usually caused by a fall onto an outstretched hand. Patients are reluctant to pronate the hand or to flex the elbow beyond 90 degrees. The only roentogenographic evidence may be an anterior or posterior fat pad sign. The posterior fat pad is more specific but less sensitive. Management of nondisplaced fractures includes a sling and posterior elbow splint for 1 to 2 weeks with range-of-motion exercises after 1 week. Continue in sling for another week and do follow-up radiograph to document that no displacement has occurred with mobilization. Displacement of the head should be referred to an orthopedist for operative repair.
Radial fractures.
In children, the most common injury is the torus (buckle) fracture, which occurs with a fall onto an outstretched hand. Radiographic findings may show only a slight cortical disruption on the lateral film. Treatment is a short arm cast for 3 weeks.
In adults, the most common radial fracture is the Colles' fracture, which is extra-articular and occurs 2.5 to 3 cm proximal to the articular surface of the distal radius. This fracture occurs with the hand dorsiflexed; the distal fracture segment is angulated dorsally and causes a "silver-fork" deformity. Reduction by traction and manipulation can be performed. After reducing the fracture, a plaster short-arm cast is applied for 5 to 8 weeks. If nondisplaced, casting for 6 weeks without reduction is indicated.
Metacarpal fractures. A boxer's fracture is a fracture of the distal neck of the fifth metacarpal and is generally the result of punching something with a closed fist (generally a wall or refrigerator). Tenderness is localized to the injured metacarpal bone. Radiographs reveal a fracture of the involved metacarpal or subluxation at the carpometacarpal joint. Nondisplaced fractures of the base of the metacarpals are treated with immobilization in a short arm cast. Displaced fractures are reduced by traction with local pressure over the prominent proximal end of the distal metacarpal fracture. A follow-up radiograph is necessary within 7 days. If any instability is noted after reduction or the fracture is comminuted, the patient should be referred to an orthopedist for open reduction and internal fixation.
Fracture of a finger.
Distal tip fractures are usually crush injuries to the tip of the finger. Protective splinting of the tip for several weeks is usually satisfactory.
Middle and proximal phalangeal fractures should be examined for evidence of angulation (by roentgenography) or rotation (by clinical examination), which require reduction. Nondisplaced extra-articular fractures can be managed by 1 to 2 weeks of immobilization followed by dynamic splinting with buddy taping to the adjacent finger. Large intra-articular or displaced fractures are usually unstable and require orthopedic referral.
Small (<25%) avulsion fractures of the middle phalangeal base occur with a hyperextension injury. These injuries are managed by 2 to 3 weeks of immobilization with up to 15 degrees of flexion at the PIP joint, followed by buddy taping for 3 to 6 weeks.
 Salter-Harris classification of epiphyseal fractures.
 Open Fractures:
- See: - Open Tibia Fractures - Open Fractures of Femur - Open Joint Injuries - Gustillo Classification: - Gun Shot Wounds: - Discussion: - treat all open fractures as an emergency; - perform thorough initial eval to dx other life-threatening injuries: (see trauma management); - antibiotics: - antibiotic prophylaxis - begin appropriate antibiotic therapy in the emergency room & continue for two or three days only; - tetanus prophylaxis - reference: - The use of antibiotics in open fractures. - Duration of preventive antibiotic administration for open extremity frx; - debridement and irrigation: - debridement of open tibial fractures: - skin preparation: - topical antimicrobials: - pressure irrigation; - immediately debride the wound using copious irrigation (9 lit) and, for type-II and type-III fractures, repeat the debridement in 24 to 72 hours; - note that wounds contaminated by dirt (vs grease, asphault ect) need aggressive repeated debridement inorder to avoid infection and subsequent osteomyeltis); - references: - Comparison of isotonic saline, distilled water and boiled water in irrigation of open fractures. - The use of bacitracin irrigation to prevent infection in postoperative skeletal wounds. An experimental study. - stabilize the fracture: - references: - The role of early internal fixation in the management of open fractures. Chapman MW, Mahoney M: COOR: 138: 120-131, 1979; - Immediate internal fixation of open fractures of the diaphysis of the forearm. - The influence of skeletal implants on incidence of infection. Experiments in a canine model. - soft tissue coverage: - bone grafting: - it is controversial as to whether bone grafting should be performed in open fractures; - in the study by Chapman et al (JBJS 1997) 31% of open fractures were treated w/ bone graft substitutes and 28% of open fractures were treated w/ autogenous bone grafts; - in this same study, infection at the fracture site occured in 5% of patients in which bone graft substitutes were used versus 13% of fractures in which autogenous grafts were used; - wound closure: - wound management: - drains and closure of wounds - wound dressings: - contaminated wound care: - in most cases, a delayed primary closure is performed for open wounds, but surgical incisions made during the case can be closed primarily; - antibiotic bead pouch is a useful method of covering the wound; - second look debridement can be performed at 48 hours w/ wound closure; - references: - Local antibiotic therapy for severe open fractures. A review of 1085 consecutive cases.
Acetabular Fracture Ankle Fractures Barton's Fracture: Dorsal Barton's Fracture Volar Barton's Fracture Bennet's Fracture Both Bone Forearm Frx Boxer's Frx Burst Fractures (of spine) Calcaneus, Frx Capitulum Fractures Chauffeur's Fracture Chance Fracture Clavicle Fracture Colles Fracture Compression Frx (Spinal) Condylar Fractures (of elbow) Coronoid Process Frx Cuboid Frx Den's Fracture Distal Radius Fx: Distal Femoral Physeal Fractures Epiphyseal Fractures Essex Lopresti Fracture: Extension Teardrop Fracture of C2 Femoral Head Fractures Femoral Neck Fractures Femoral Shaft Fracture (Menu) Flexion Tear Drop Fracture Foot Fractures Galeazzi's Frx Greater Tuberosity Frx Greenstick Fracture Hangman's Frx Hamate Frx Hip Fx Hip Frx Dislocation Humeral Physeal Injuries Humeral Fractures (menu) Intercondylar Eminence Fracture Intertrochanteric Fractures Jefferson Fracture Jones Fracture Lateral Condyle Frx, Pediatric Lateral Talar Process Frx: Lisfranc's Fracture Maisonneuve Fracture Mallet Frx Malgaigne Fracture Medial Epicondyle Frx of the Humerus Metacarpal Frx / Disloc Monteggia's Fracture Navicular Odontoid Fracture Olecranon Fractures Patellar Frx: Pathologic Fracture: Diff dx Pelvic Fracture Phalangeal Fractures Pilon Fractures Posterior Process Talus Frx: Proximal Humeral Fracture Radius Fracture Rolando's Fracture Sacral Fractures Scaphoid Fracture Scapular Fractures Sesamoid Bones of the Foot: Smith's Fracture Spine: T/L/S Fractures Spinous Process Fracture Stress Fractures Subtrochanteric frx Supracondylar Femoral Fractures Supracondylar Humeral Fractures (adult) Supracondylar Frx of Humerus (pediatric) Syndesmotic Injury Talus Frx Thumb Fractures Tibial Frx Tibial Plafond Fractures Tibial Plateau Fractures Tibial Tubercle Frx: Tillaux Fracture Trimalleolar Fracture Triplane Fracture Torus Fracture Frx of the Lesser and Greater Trochanter: Ulnar Shaft Fracture Ulnar Styloid Process Frx
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