fracture

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Du Xinru (Professor, chief physician) Review Beijing Chaoyang Hospital Orthopaedic Department
Fracture is Phalange Structural Continuity Complete or partial fracture. This disease is mostly seen in children and the elderly, and also in young and middle-aged people. Patients often suffer from fracture of one part, and a few of them suffer from fracture of one part Multiple fractures After timely and appropriate treatment, most patients can recover their original functions, and a few patients can leave some sequela
TCM disease name
fracture
Foreign name
fracture [2]
Visiting department
Trauma orthopaedics, pediatric orthopaedics
Multiple population
Children, elderly
Common causes
Direct and indirect violence, cumulative strain
common symptom
Abnormality, abnormal activity, bone fricative or bone rubbing sensation
infectivity
nothing

pathogeny

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Causes of fracture [2]
There are three main reasons for fracture:
violence Direct action Fracture occurs at a certain part of the bone, resulting in fracture of the injured part, often accompanied by soft tissue injury of varying degrees. If the wheel impacts the calf, it will occur at the impact place Fracture of tibia and fibula shaft
Indirect violence acts through vertical conduction Leverage Or the torsion may cause fracture at a distance. For example, when the foot lands from a high place, the trunk will buckle forward sharply due to gravity, and the vertebral body at the junction of the thoracolumbar spine will occur Compressibility or Burst fracture
3. Accumulative strain
Long term, repeated and slight direct or indirect injuries can lead to fracture of a specific part of the limbs, also known as Fatigue fracture , such as long-distance walking, it is easy to lead to the second and third place metatarsal bone and the fibula Lower 1/3 shaft fracture.

classification

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In order to clarify the nature, diagnosis and treatment principles of fractures, fractures can be classified as follows:
1. According to Whether the fracture is connected to the outside world And divide
(1) Closed fracture : The skin or mucosa at the fracture site is intact and not connected with the outside world.
Schematic diagram of open fracture [2]
(2) Open fracture : The skin or mucosa near the fracture is broken, and the fracture is connected with the outside world. Bacteria can enter from the wound, which is easy to cause infection. Open fracture Wound It can be formed from outside to inside, such as Firearm wound Fracture; It can also be punctured from the inside out by the sharp fracture end soft tissue To form, such as Pubic bone And Ischial branch At the same time, it is easy to cause fracture Posterior urethra and Bladder injury , sacrum Caudate fracture It may puncture the rectum. [1]
2. According to Condition of fracture line And points.
(1) Incomplete fracture: bone integrity or Continuity Only partial interruption. as Fissure fracture Qingzhi fracture Etc.
Encapsulated fracture of femoral neck (complete fracture) [2]
(2) Complete fracture : Fracture line passing periosteum And all bones, so that the fracture end is completely separated. [1]
3. According to Stability of fracture end And divide
(1) Stable fracture : The above fractures should be properly treated after reduction External fixation Those who are not prone to re displacement are called stable fractures, such as fracture, fracture of branches Embedded fracture Transverse fracture Etc.
(2) Unstable fracture : Those who are prone to re displacement after reduction are called unstable fractures, such as Oblique fracture Spiral fracture Comminuted fracture Etc. [1]
4. According to Anatomical location of fracture on bone Divided into
(1) Diaphyseal fracture : Finger length Tubular bone The fracture of the shaft can be divided into upper 1/3, middle 1/3 and lower 1/3 fractures; It can also extend to upper, middle and lower 1/3 fractures.
(2) Intraarticular fracture : Fracture line affects the joint surface( Articular capsule Internal).
(3) Metaphysis Fracture: finger long bone Fracture of the metaphysis at both ends, when the fracture line affects Articular surface It is intra-articular fracture.
(4) Fracture dislocation : fracture and adjacent dislocation of joint Exist simultaneously.
Types of epiphyseal injuries [2]
(5) Injury of epiphysis : Refers to children epiphysis The department is involved, which can be subdivided into Epiphyseal separation (Type I injury), epiphyseal separation with metaphyseal fracture (Type II injury) Epiphyseal fracture (Type III injury), fracture of epiphysis and metaphysis (Type IV injury), compression injury of epiphysis (Type V injury). Epiphyseal separation with metaphyseal fracture is common.
(6) Cartilage fracture: it is a special type of intra-articular fracture, which needs the help of arthroscope or MRI The diagnosis can only be confirmed after examination. [1]
5. According to Name Fracture of
Some fractures are named according to the name of the scholar who first described them. Commonly used fractures are:
(1) Coles fracture (Colles fracture) radius Within 2.5cm of the lower end Extraarticular fracture , distal to fracture Radial side And dorsal displacement.
(2) Smith fracture (Smith fracture): The fracture line is also within 2.5cm of the lower end of the radius, but the distal end of the fracture moves to the ulnar and volar sides (the distal end of Colley fracture moves in the opposite direction).
(3) Barton fracture (Barton fracture): refers to the back of the distal radius Lateral margin Or volar margin fracture (the latter is also called anti Barton fracture) with wrist Subluxation of joint The.
(5) Galeazzi fracture: fracture of the lower 1/3 of the radius of the finger combined Dislocation of lower radioulnar joint The.
(6) Bennett fracture (Bennett fracture): No. 1 Metacarpal bone Proximal longitudinal fracture with palm Dislocation of wrist joint The.
(7) Pott fracture: Ankle fracture One of. [1]
6. Fractured AO classification
The AO alphanumeric classification published by M ü ller et al. is the result of an international cooperation and the most commonly used standardized fracture at present classification method This system is not only used to record all fractures, but also to help biomechanics And biology to understand these fractures. Letters used by the system Numeric symbol Expression It is convenient for doctors to evaluate, record and store clinical findings of fractures as needed. In this system, any fracture can be identified by answering relevant questions: which bone? Which segment of bone? Which type of fracture? Which group do you belong to? To which Subgroup
along with Imaging Development of inspection means, such as Magnetic resonance imaging It can be found in some epiphyses Bone injury Only Trabecula Injury and edema, and Bone cortex And bones Overall structure Keep intact. It used to call this kind of damage“ Bone contusion ”Its classification is still inconclusive. In recent years, with the aging Osteoporosis Patient 2 Phosphonate With the popularization of its use, the so-called "atypical fractures" related to it are often seen in clinical practice, especially the atypical fractures of the proximal femur. The classification, treatment and healing process of such fractures need further research. [1]

clinical manifestation

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1. General performance
(1) Shock is associated with multiple fractures Pelvic fracture Femoral fracture Spinal fracture And severe open fracture, patients often suffer from extensive soft tissue injury, massive bleeding, severe pain or complications Visceral injury Shock.
(2) Fever There is a lot of internal bleeding at the fracture, hematoma The body temperature rises slightly during absorption, but generally does not exceed 38 ℃. The possibility of infection should be considered when the body temperature of open fractures rises.
2. Local manifestations
The local manifestations of fracture include the specific signs and other manifestations of fracture.
3. Special signs of fracture
(1) Malformation The displacement of the fracture end can change the shape of the affected limb, which is mainly manifested as shortening, angulation and lengthening.
(2) Abnormal activity Under normal circumstances, abnormal movement occurs in the part where the limb cannot move, after fracture.
(3) Bone fricative or bone rubbing sensation After fracture, the two fracture ends rub and collide with each other, which can produce bone fricative sound or bone rubbing feeling.
The diagnosis can be made as long as one of the above three signs is found, but the possibility of fracture cannot be ruled out in those without these three signs, such as Embedded fracture Fracture. Generally, the above physical signs should not be checked for diagnosis, because it will aggravate the injury.

inspect

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one X-ray inspect
Those suspected of fracture should undergo routine X-ray examination, which can show clinically difficult to find Incomplete fracture , deep fracture, intra-articular fracture and small Avulsion fracture The X-ray examination is also necessary even for those who have clinically manifested obvious fractures. It can understand the type and specific conditions of fractures and has guiding significance for treatment.
X-ray photography It should include both anteroposterior and lateral radiographs, and must include adjacent joints, sometimes additional photography is required Oblique position Tangent bit Or the corresponding part on the contralateral side X-ray film
For those whose fracture is not clear but cannot be excluded Spinal fracture It is feasible for those who may compress the spinal cord nerve root and those who have complex fractures CT Check. 3D CT reconstruction can be more intuitive and convenient for fracture classification and treatment Scheme selection It is very helpful and commonly used in clinical practice.
3. MRI examination
Although the fracture line is not as good as that of CT, the spinal nerve root and soft tissue injury The display of has unique advantages and has been widely used Spinal fracture Inspection of.

diagnosis

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According to clinical manifestations and Imaging The diagnosis can be confirmed or eliminated by inspection.
The diagnosis of general fractures is not difficult, especially the length of limbs Tubular bone Diaphyseal fracture , easy to diagnose, even the patient himself can judge. For intra-articular fractures, or patients in coma Denervation It is easy to miss or misdiagnose the fracture of children's epiphysis before it is closed. [1]
Main basis for diagnosis of fracture History of trauma , chief complaint, physical signs and X-ray Check. For complex Intraarticular fracture , Impact Spinal canal Fracture, etc CT Or MR imaging technology. [1]
1. Medical history
It mainly includes the following three aspects:
(1) Trauma history: in addition to detailed inquiry about the time and direction of violence and the posture of the patient's body or limb, we should also understand Wounding substance Type, injury site and External force action Form, etc., which are crucial to the judgment, diagnosis and treatment of injuries, especially the diagnosis and treatment of spinal injuries. [1]
(2) First aid and out of hospital treatment history: on site and from On site transfer First aid before arriving at the hospital and its treatment process, especially the sensory and motor changes of the injured limb, tourniquet Usage of, Spinal fracture The patient's posture when moving, blood loss and fluid replacement on the way, and what kind of drugs he has used. [1]
(3) Past history : Mainly understand the medical history related to fracture, including whether there is joint Disease, with or without osteoporosis or Endocrine disorder , as well as heart, lung, liver renal function It is not only closely related to the determination of some fractures, but also often affects the selection of treatment methods and prognosis [1]
2. Symptoms of fracture
(1) Pain: severe pain occurs in the fracture area, especially in the affected limb during exercise, with obvious tenderness. In addition, local swelling and pain can make the affected limb Restricted activity
(2) Shock: the patient suffered from massive bleeding (the amount of bleeding can reach more than 2000ml), severe pain or complications Visceral injury Causes shock.
(3) Elevated body temperature: generally, the body temperature is normal after fracture. When there is a fracture site hematoma During absorption, the body temperature can rise slightly, usually not more than 38 ℃. Open fracture The main cause of the patient's temperature rise is infection.
(4) Accompanying injury: those with complicated injury mechanism or multiple injuries in the whole body are prone to injury in other parts. Other tissues can also be injured from the fracture end, and corresponding symptoms appear. The examination should be comprehensive to prevent missed diagnosis.
(5) complication : It refers to the complications mainly caused by fracture. Except early shock and Fat embolism syndrome External, easy to occur in the middle and late stages Hypostatic pneumonia urinary tract infection Bedsore They all need close observation and early detection. [1]
3. Signs of fracture
(1) Deformities: due to external force tendon The effects of traction and limb gravity can cause various deformities at the fracture end Degree of damage It is also closely related to the gravity of the fracture end and the direction of contraction of nearby muscles.
(2) Bone fricative or Bone rubbing sensation : When two fracture segments rub against each other, bone fricative sounds or bone fricative feelings may occur. This sign should not be checked actively to avoid increasing pain and tissue damage
(3) Abnormal activity: it can occur in the parts of the limbs without joints Pseudarthrosis activity [1]
If one of the above three signs is found, the diagnosis can be made. But when these three signs are not seen, there may also be fractures, such as impaction Fissure fracture Etc. Attention should be paid to the patient during the initial examination, and repeated examinations should not be carried out on purpose to avoid aggravating the damage of surrounding tissues, especially important blood vessels Nerve injury [1]
4. Other manifestations of fracture
(1) Local tenderness : Local tenderness can be found at the fracture, squeezing from a distance to the fracture, and indirect tenderness can also be found at the fracture, which can be used to diagnose deep fracture and its location. for example Pelvic fracture When pressing the two iliac bone wings gently with both hands, it can cause pain at the fracture.
(2) Local swelling and ecchymosis : When the fracture occurs, the blood vessel at the injured part ruptures and bleeds, soft tissue Edema occurs due to injury, and the affected limb is significantly swollen. The skin may brighten and produce tension blisters. Can be obstructed in serious cases Venous reflux , increase the pressure in the bone fascia chamber, and even block the arteries blood circulation , occurs Ischemic contracture The fracture at the superficial part, due to the superficial hematoma, hemoglobin After decomposition, it can become purple, cyan or yellow subcutaneous ecchymosis.
(3) dysfunction : Fracture causes fracture and pain of the internal support of the limb, which causes the limb to lose part or all of its movement function.
(4) Percussion pain: For deep fractures, it is difficult to check tenderness. Percussion pain can be used as a substitute Femoral neck The discovery of intra-articular fractures such as intercalated fractures and scaphoid fractures is of great value. [1]
5. Neurological and vascular examination
(1) Nerve injury: no matter the spine or limb fracture, the movement and Sensory function Check to determine whether there is nerve damage and the extent and scope of damage. Clinically Fracture of humeral shaft after Radial nerve Attention should be paid to the more opportunities involved. [1]
(2) Vascular injury of limbs : All fractures above the wrists and ankles of the limbs should be examined at the same time radial artery or Dorsalis pedis artery Whether there is pulsation and whether it is weakened, except limbs Vascular injury If necessary, vascular ultrasound Angiography Wait for inspection to make a clear diagnosis. [1]
Generally, there is no special change, but after 24 hours, it may occur depending on the degree of fracture White blood cell count Increase or slightly increase; Blood cell sedimentation rate It can also be slightly raised. [1]
7. Imaging examination
(1) Normal X-ray film Check: X-ray photography The examination can show the problems that are difficult to find in clinical examination, such as incomplete fracture, deep fracture, small piece Avulsion fracture Or oblique fracture fracture dislocation, etc. Even those who have clinically manifested obvious fractures, X-ray examination is also necessary, which can help understand the type of fractures and the displacement of fracture segments, and has important guiding significance for the treatment of fractures. The majority of fractures can be diagnosed by X-ray photography, and it is the main basis for classification and selection of treatment methods. However, attention shall be paid to:
1) Projection position: at least including the positive position (front and rear position) and Lateral position Two directions, left and right still need to be photographed for individual cases Oblique position or Tangent bit
2) Radiography scope: the projection scope of long bone injury of limbs shall at least include one adjacent joint; For pelvic injuries, large negative films shall be used to show the whole pelvis and both sides at the same time Sacroiliac joint hip joint And take oblique films of bilateral sacroiliac joints as appropriate; For spinal injury, tenderness and percussion pain should be taken as the center, with 4~6 vertebral segments in the upper and lower parts respectively. At the same time, attention should be paid to multiple segmental injuries far away.
3) Photography definition : The boundary between muscle and bone tissue can be distinguished, and joints can be displayed as far as possible Cyst wall Shadows are used to judge or infer intra-articular fractures.
4) Contrast photography: when it is difficult to determine the injury or the child's joint injury (such as epiphysis X ray films of the corresponding parts of the opposite limb shall be taken for comparison in order to facilitate the determination.
5) Photography skills: special photography is available for special parts, such as the opening position of the odontoid process and the lateral position of the lower cervical spine technical requirement Pay attention to careful operation.
6) Follow up photography: For fractures that are difficult to show the fracture line in the initial photography, in addition to changing the angle of repeated photography, it can also be photographed again in a short time. At this time, the bone at the edge of the fracture end is absorbed and the fracture line is easily displayed.
7) X-ray fluoroscopy: at present, it is only used for reduction and fixation during operation, and protection work should be done well. [1]
(2) Fault photography: CT technology After popularization, it has been used less. [1]
(3) CT examination : For intra-articular fractures, complex fractures (such as pelvis Acetabular fracture )And so on. CT or CT reconstruction can accurately determine the size and number of fracture blocks, and the degree of injury and collapse of the joint surface, which is the basis for preoperative planning Operative approach For reference. At present, routine CT examination and three-dimensional reconstruction before joint fracture surgery have been widely considered as the standard process. Generally, CT examination should include Axial position Plain scan, at least including coronal and sagittal The reconstruction of multi-layered reconstruction and three-dimensional reconstruction. [1]
(4) MR inspection: can be judged soft tissue injury Situation, such as Spinal cord injury The degree of Vertebrae Relationship of fractures, shoulder, hip and Knee joint Internal ligaments Damage, and Articular capsule The state of; It can also be used for the diagnosis of some occult fractures. [1]
(5) Angiography: such as Myelography , intra-articular angiography and angiography are seldom used at present. [1]

first aid

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Fractures are usually serious Multiple injuries Part of. Therefore, on-site first aid should not only pay attention to the treatment of fractures, but also to the treatment of the whole body. Its purpose is to save lives, protect the affected limbs and transport them quickly in the simplest and most effective way so that they can be properly treated as soon as possible. [1]
1. Rescue shock
First, check the patient's general condition. If the patient is in shock, pay attention to heat preservation and minimize moving. If possible, transfusion and blood transfusion should be carried out immediately. merge craniocerebral injury People in coma should pay attention to keeping respiratory tract unobstructed. [1]
2. bandage the wound
For open fracture and wound bleeding, most of them can be stopped by pressure bandage. Large blood vessel When bleeding and pressure bandage cannot stop bleeding, it can be used tourniquet Stop bleeding. Best use Inflatable tourniquet And the pressure and time used shall be recorded. Wound use sterile Dressing or cleaning cloth shall be bound to reduce re pollution. If the fracture end has poked out the wound and has been contaminated, and it also compresses important blood vessels and nerves, it should not be reset to avoid bringing the dirt to the depth of the wound. They should be sent to the hospital for debridement and then reset. If the fracture end slides into the wound by itself during dressing, a record should be made for further treatment during debridement. [1]
3. Properly fixed
Fixed Yes First aid for fracture Important measures. Any suspected fracture shall be treated as fracture. In case of closed fracture, it is not necessary to take off the clothes, pants, shoes and socks of the affected limb during emergency treatment to avoid excessive moving of the affected limb and increasing pain. If the affected limb is severely swollen, use scissors to cut the affected limb Sleeves and bottom of a trouser leg Cut it to reduce pressure. When the fracture has obvious deformity, and there is a risk of penetrating soft tissue or damaging important blood vessels and nerves nearby, the affected limb can be properly pulled to straighten it before fixation. [1]
The purpose of fracture emergency fixation: ① to avoid damage to important surrounding tissues, such as blood vessels, nerves and viscera during the handling of the fracture end; ② Reduce the movement of the fracture end and relieve the pain of the patient; ③ Easy to transport. Special plywood or wood, sticks and branches can be used for fixing. If there is no available material, Fracture of upper limb The affected limb can be fixed on the chest, and the lower limb fracture can be bound and fixed with the opposite healthy limb. [1]
4. Rapid transfer
After initial treatment and proper fixation, patients should be transferred to the nearest hospital for treatment as soon as possible. [1]

treatment

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The typical manifestation of fracture patients is local deformation after injury, abnormal movement of limbs, etc., which can be heard when moving limbs Bone fricative In addition, the wound is extremely painful, local swelling Congestion , appears after injury Dyskinesia
The ultimate goal of fracture treatment is to maximize the recovery of injured limbs. Therefore, in the treatment of fracture, its reduction, fixation Functional exercise These three basic principle Very important.
1. Reset
It is to restore the displaced fracture end to normal or close to the original anatomical relationship to restore the bone Support function The methods of reduction include closed reduction and surgical reduction.
2. Fixing
After fracture reduction, due to instability, it is easy to move again. Therefore, different methods should be used to fix the fracture in a satisfactory position to gradually heal it. frequently-used Fixing method yes: Small splint Plaster bandage External fixation Support, traction braking fixation, etc. These fixation methods are called external fixation. If the plate, steel needle, intramedullary needle Screw Fixation by nails Internal fixation
3. Functional exercise
Through injured limbs Muscle contraction , increase the blood circulation , promote Fracture healing , prevent Muscular atrophy , prevent joint adhesion, joint capsule contracture, etc. by actively or passively moving the unfixed joint, so as to restore the function of the injured limb to that before the fracture as soon as possible Normal state

heal

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