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Bursa and synovial sheath trauma and infection

Treatment and outcome with traumatic lesions of the

Background: Traumatic lesions of the olecranon bursa (OB) and prepatellar bursa (PB) are injuries commonly seen in orthopaedic trauma units. These injuries are associated with a high rate of complications. At present, only little is known about the incidence, complication rate, and treatment approaches in patients with acute open bursae The sheath of the little finger is continuous with the ulnar bursa covering the flexor tendons in the palm. The flexor pollicis longus is covered by a single sheath throughout, the radial bursa. The arrangement of the synovial sheaths for these tendons is illustrated in Figure 2.78. Synovial sheaths can be infected producing tenosynovitis Synovial structure injury and infection A bursa is a synovial fluid-filled sac which, like a tendon sheath, serves to facilitate tendons gliding over bony prominences. It can be difficult to sheath infections. When a joint or tendon sheath infection is suspected, a joint fluid sam-. Since bursae and synovial sheaths are discrete structures, it is usually possible to identify by location the one which is involved, provided overlying structures do not render it inaccessible. When a bursa is the site of bacterial infection, both the lesion and its cause can be demonstrated readily

Synovial Sheaths - an overview ScienceDirect Topic

  1. Synovial membrane is the lining of the joint and its surrounding tissues like bursa and tendon sheath. The lining or synovial membrane secretes a clear fluid called synovial fluid, which act as a lubricant. Infection and injury can lead to synovitis; tuberculosis is also a common cause
  2. Septic bursitis is caused by bacterial inoculation of the synovial bursa; S aureus is the most common pathogen found . Superficial bursae such as the prepatellar or olecranon bursae are most commonly involved, often due to direct transcutaneous inoculation due to penetrating injury
  3. The flexor tendons receive nutrients from a direct vascular supply along the vincular system and through diffusion from the synovial fluid. When infection occurs in the closed system of the flexor tendon sheath, the pressure increases, leading to obstruction of the arterial blood supply with subsequent tendon necrosis and rupture (17)
  4. gers with the radial or ulnar bursa, occur in ap-proximately 15% of patients (15,16). The flexor tendons receive nutrients from a direct vascular supply along the vincular system and through diffusion from the synovial fluid. When infection occurs in the closed system of the flexor tendon sheath, the pressure increases, leading to obstruc
  5. Septic Bursitis Defined. Septic bursitis is a condition that affects the bursae. The bursae are little fluid-filled sacs which function as cushions between muscles, tendons, bones and joints. Over 150 of them provide lubrication through the synovial cells that align with them. This lubrication is what makes our joints move smoothly

Shoulder bursitis is inflammation of the shoulder bursa. Bursitis may be caused by injury, infection, or a rheumatic condition. Symptoms include pain, swelling, tenderness, and pain with movement of the shoulder joint. Treatment may involve ice compresses, rest, and anti-inflammatory medications and depends on whether there is an infection If the infection is suspected as being a cause, a culture of the suppurative synovial fluid will be taken to choose the best treatment against it. The joint fluid analysis may also be done and. Contraindications: For traumatic bursa injuries: general contraindications for anesthesia and surgery; chronic bursitis: initially not closable skin defect (plastic surgery required), hemodynamically instable patient (e.g. systemic inflammatory response syndrome [SIRS] or sepsis), pre-existing skin infection A correct diagnosis takes into consideration not only the symptoms presented, but also the results of specialized tests of the joint and synovial fluid. The doctor will look at your medical history as past symptoms, illnesses, injuries, fevers, infections, or autoimmune diseases may offer an explanation for present symptoms

The bursae are lined with synovial cells. Synovial cells produce a lubricant that reduces friction between tissues. This cushioning and lubrication allows our joints to move easily. When a person.. Synovial Bursa. Synovial bursae provide a gliding surface and a cushion for soft tissues as they pass over skeletal prominences and are found over bone and under muscle, tendon, ligament, fascia, or skin. From: Canine Rehabilitation and Physical Therapy (Second Edition), 2014. Download as PDF Infections within tendon sheaths and bursae may result in more variable changes in synovial fluid nucleated cell and total protein values (generally lower than those of joints) For example, the radial bursa can communicate with the ulnar bursa at the wrist (an infection of this area is called a horseshoe abscess). The synovial sheaths, poorly vascularized and rich in..

INTRODUCTION. Tenosynovitis refers to inflammation of a tendon and its synovial sheath; this condition occurs most frequently in the hand and wrist but can occur in any part of the extremities where a tendon glides within a synovial-lined fibro-osseous sheath. Issues related to infectious tenosynovitis will be reviewed here the synovial structure without infection. However, chronic lacerations or penetrating wounds involving a joint/tendon sheath (6 to 8 hours) often establish a true infection. The presence of bacteria within this space induces a synovial inflammatory re-sponse.4,5 Both inflammatory cells and mediators are attracted to this site to help. Wounds of the limb are especially at risk of involving a synovial structure (joint, tendon sheath, or bursa). Wounds that communicate with a synovial cavity can result in synovial infection, which may lead to permanent disability Bursitis can occur in the forefoot and may involve the intermetatarsal bursae or the adventitial bursae beneath the metatarsal heads (, 41 42). Trauma, infection, rheumatoid arthritis, and gout may all cause bursitis. The most important distinguishing feature of a bursa is its location This condition may progress to frozen shoulder. Haemorrhage within the bursa may also appear echogenic. This can be due to trauma, haemophilia or synovial angiomatous malformation. Less common causes include other synovial-based conditions, including infection, pigmented villo-nodular synovitis and synovial osteochondromatosis

Synovitis and Bursitis - ScienceDirec

  1. Injury to the tendon may result in the malfunction of the sheath. If this occurs, the sheath may fail to make synovial fluid or may not make enough fluid. This can cause inflammation or swelling.
  2. or trauma. Another cause is infection of the flexor tendon sheath in its distal section. The infection can track back from this region, sometimes even as far as the carpal tunnel
  3. A synovial bursa (plural bursae or bursas) is a small fluid-filled sac lined by synovial membrane with an inner capillary layer of viscous synovial fluid (similar in consistency to that of a raw egg white).It provides a cushion between bones and tendons and/or muscles around a joint. This helps to reduce friction between the bones and allows free movement
  4. If an infection within a synovial structure is not treated this usually becomes a life threatening problem. The gold standard treatment for synovial sepsis is arthroscopy. This is a keyhole procedure, performed under general anaesthesia which enables us to look inside the joint/tendon sheath/bursa and
  5. A. Pasbjerg A syringe for a cortisone injection, which can help with synovial inflammation. Synovial inflammation, also known as synovitis, can be treated in a number of ways, depending on the cause and severity of the condition, and the patient's personal preferences.Common treatments for acute or mild to moderate inflammation of the joint lining called the synovium include the use of heat.
  6. Septic bursitis is inflammation and infection of a bursa commonly due to direct inoculation from trauma, spread from nearby soft tissue (cellulitis), or hematogenous spread. (FTS) is a surgical emergency. It is an infection of the tendon and synovial sheath of the flexor surface of the hand. Misdiagnosis or failure to diagnose this disease.

Synovitis and TenosynovitisTreatmentRecoveryCausesSymptom

Anatomy texts describe the flexor synovial sheath of the little finger as extending proximally into the palm to join with the ulnar bursa in 80% of cases. Based on this, one would expect frequent extension of little finger flexor synovial sheath infections into the forearm. Methylene blue injection infection (e.g. subcutaneous, muscle, bursa, ten-don sheath, joint); (3) ascertain the form of as a result of chronic repetitive trauma or undue mechanical stress. When infection is present, S. allowing one to differentiate synovial sheath thickening from a synovial sheath effusion

The term infectious tenosynovitis refers to infection of the tendon and its synovial sheath, a condition usually occurring from penetrating injury or extension from adjacent tissues (17). The hand. Knee bursitis can be caused by: Frequent and sustained pressure, such as from kneeling, especially on hard surfaces. Overuse or strenuous activity. A direct blow to your knee. Bacterial infection of the bursa. Complications from osteoarthritis, rheumatoid arthritis or gout in your knee A bursa is a fluid-filled synovial pouch that can be deep or superficial and functions as a cushion to reduce friction between structures such as tendons, bone, or skin.1 Superficial bursae are.

Soft-Tissue Infections and Their Imaging Mimics: From

Septic Bursitis Defined. Septic bursitis is a condition that affects the bursae. The bursae are little fluid-filled sacs which function as cushions between muscles, tendons, bones and joints. Over 150 of them provide lubrication through the synovial cells that align with them. This lubrication is what makes our joints move smoothly This disease is defined as inflammation/infection of the flexor tendon and its synovial sheath due to trauma, IV drug use, fresh/salt water, plants, animal/human bites, contiguous spread from a nearby infection, or hematogenous spread (i.e. from gonorrhea or Mycobacteria A 53-year-old woman was identified with Mycobacterium szulgai infection in. A bursa is a cyst lined with synovial cells and located in an area exposed to high pressure or repetitive friction. Bursitis is the inflammation of the bursa mainly caused by excessive mechanical stimulation and by other reasons including autoimmune inflammatory diseases, trauma, and infection

• Flexor sheath infection §Penetrating Injury. 6/29/18 7 Drainage of medial space Incision Drainage ofDrainagelateral space Incision FAvoid NVB § Deep to superficial fascia FMotor branch §Very vulnerable! Radial and Ulnar Bursa FSynovial sheath proximal extension §Thumb §Little finger FFlexor tendon sheath infection §Spreads proximally. Bursitis can result from an injury, an infection, or a pre-existing condition in which crystals can form in the bursa. Injury An injury can irritate the tissue inside the bursa and cause inflammation Flexor Sheath Infections • A knowledge of the anatomy of the synovial sheaths is essential for proper diagnosis and treatment • Infection of the synovial sheaths remains rare but its prognosis is severe • Any delay in diagnosis or treatment will affect the final outcome which is directly correlated with the stage of lesion progressio

Mild inflammation or loss of elasticity of a synovial sheath like a joint capsule, tendon sheath, or bursa. If acute and unilateral may represent blunt trauma or miss-step. Trauma from repetitive over-stretching during work outs. Hocks: Bog Spavin and/or Throughpin; Calcaneal Bursitis: Capped Hock; Fetlocks and Flexor Tendon Sheath: Windpuff If a patient presents with the 4 Kanavel signs, flexor tendon infection is diagnosed (see top image also). The 4 Kanavel signs are: (1) finger held in flexion. (2) fusiform swelling. (3) tenderness along the flexor tendon sheath. (4) pain with passive extension of the digit. The process has the ability to rapidly destroy a finger's functional.

Hand Infections: Anatomy, Types and Spread of Infection

What Is Septic Bursitis? OrthoBethesd

  1. ed and treated as quickly as possible
  2. Bursitis can be either acute (lasting only a few days) or chronic. It can arise from muscle overuse, trauma, excessive or prolonged pressure on the skin, rheumatoid arthritis, gout, or infection of the joint. Repeated acute episodes of bursitis can result in a chronic condition
  3. Infectious tenosynovitis: Tenosynovitis is an infection of a tendon and its protective sheath that results in inflammation of the tendon and synovial sheath. This infection is most common in the finger, hand, or wrist but can occur in any part of the extremities where a tendon glides within a synovial-lined fibro-osseous sheath
  4. Acute infection in synovial sheath is called Tenosynovitis, causes swelling of the whole finger, making it difficult to move without pain. In thumb and little finger synovial sheath extends proximally and is connected to common synovial sheath for all tendons, called Ulner bursa‟, situated in Parona‟s space in front of the wrist
  5. Tenosynovitis is inflammation of the tendon sheath (a protective membrane that surrounds a tendon, allowing it to move). A tendon sheath is made up of a synovial membrane (which makes synovial fluids to lubricate the sheath) and a fibrous layer. In horses with tenosynovitis, the synovial membrane and usually the fibrous layer are inflamed

Calcification within the bursa may be due to calcific bursitis, synovial osteochondromatosis, or (in bursae that communicate with a joint) loose bodies. The CT imaging features of iliopsoas bursitis ( Figure 13-13, A ), greater trochanteric bursitis, anserine bursitis, radiobicipital bursitis, and adventitial bursitis of the scapulothoracic. Bursa & Bursitis 18. The bursa is a small sac filled with lubricating fluid, located between tissues such as bone, muscle, tendons, and skin. Bursae help to decrease friction, rubbing and irritation and help joints to move with ease. The more superficial bursae act as cushions between the skin and bone

Inflammation often follows trauma. Bursitis causes increased secretion of viscous fluid, which is collected in a sac. Most common knee joint bursitis is Housemaid Knee and Baker's Cyst. Pre-patellar bursa is known as Housemaid's knee is also known as Preacher's Knee and is caused by kneeling on knee often for prolonged time A deep puncture wound in the palmar surface of the little finger near the proximal IP joint might introduce infection into which synovial cavity: Bursa of flexor carpi ulnaris Fibrous digital sheath of fingers Intercarpal joint space Radial bursa Ulnar bursa Fusiform swelling of the whole finger 2. Partially flexed posture of the finger 3. Tenderness limited to the course of the flexor tendon sheath 4. Disproportionate pain on extension of the finger . Patients with an infection of the radial bursa, ulnar bursa, space of Parona, or a combination of these (horseshoe abscess) present with a flexed. Hand infection.ppt - Subcutaneous u203a Paronychia u203a... School St. John's University; Course Title MED MISC; Uploaded By JusticeScorpion27162.

Tendinitis is inflammation of a tendon, often developing after degeneration (tendinopathy).Tenosynovitis is tendinitis with inflammation of the tendon sheath lining. Symptoms usually include pain with motion and tenderness with palpation. Chronic deterioration or inflammation of the tendon or tendon sheath can cause scars that restrict motion Primary synovial chondromatosis is characterized by growth of hyaline cartilage nodules within the synovial lining of a joint, bursa, or tendon sheath.10,11 It is unclear whether these nodules are a result of a metaplastic or neoplastic process. Patients between the ages of 30 and 50 years are most commonly affected, with men affected twice as. Infection within a tendon sheath results in inflammation and the development of adhesions or fibrous connections between the tendon and the sheath wall. Adhesions prevent proper movement and cause pain. Uncontrolled tendon sheath infections can also result in spread of infection into the tendons themselves (2). Infected synovial structures are. 2 Ganglion Cyst - Common at wrist, esp. dorsal-May simulate mass, or may be occult source of pain if small or deep - Joint >> tendon sheath-MRI: -Lobulated-Fluid signal-Rim-enhancement-May indicate underlying ligament tearGanglia: Common Locations • Dorsa A number of tendons travel through a fibrous tube or sheath. Inflammation of the lining of this sheath is known as tenosynovitis. Tenosynovitis may result from direct trauma, repetitive-use injury, systemic inflammatory diseases, or infection. Stenosis and/or inflammation of a tendon sheath may interfere with smooth movement of the tendon

Bursal chondromatosis is synovial chondromatosis of the bursae. It is a rare disease entity that can involve the adventitial bursa of the lateral ankle. Complete synovectomy, removal of loose bodies, and bursectomy comprise the treatment of choice. Detailed preoperative radiologic assessment and surgical planning are the keys to success. Any accompanying synovial chondromatosis of the ankle or. Injury to the tendon may result in the malfunction of the sheath. If this occurs, the sheath may fail to make synovial fluid or may not make enough fluid. This can cause inflammation or swelling of the sheath. This condition is known as tendon sheath inflammation

Distention of synovial structures was present in 43 horses and was localized to the TT joint (25), tarsal sheath (9), long DE tendon sheath (6), and calcaneal bursa (3). Synovial distention was likely present in additional horses, but severe tarsal swelling precluded identification of the affected joint capsule, tendon sheath, or bursa on. Short description: Synov/tend/bursa dis NEC. ICD-9-CM 727.89 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 727.89 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes) A fibrous sheath called the joint capsule encloses the structures of the glenohumeral joint. This extends from the neck of the humerus to the rim of the glenoid cavity. The joint capsule is lined with the synovial membrane, which produces synovial fluid that reduces the friction between the connection Injury . A sports injury is a common cause of joint effusion, especially of the knee. Injuries—such as those from a car accident, serious fall, or blunt force impact—can also lead to an effusion. The injury may involve bone, connective tissues (such as tendons and ligaments), or joint cartilage (like the meniscus)

Bursitis: Causes, Treatment, Symptoms & How to Preven

trauma, but t(X;6) Osseous B9 disorder in which multiple hyaline cartilage nodules are formed w/in a jt, tendon, sheath, or bursa -May see mild leukocytosis and elevated ESR or CRP making differentiation from infection difficult-Synovial fluid analysis is nonspecific and Synovial Bx remains the gold standar Inflammatory bursitis is usually the result of repetitive injury to the bursa. In the subacromial bursa, The common synovial sheath for the flexor tendons or the ulnar bursa is a synovial sheath in the carpal tunnel of the human ISBN -8018-5652-3. infection of a synovial structure (joint, tendon sheath,. The bicipital radial bursa lies between the radial tuberosity and the insertion of the biceps brachii tendon. Bursitis leading to enlargement of the bursa can result from a number of causes, most frequently repetitive mechanical trauma [14]. Other causes include infection, inflammatory arthropathic, chemical synovitis, bone proliferation, an

Tenosynovitis is an infection of a synovial sheath. It most commonly results from the introduction of bacteria into a sheath through a small penetrating wound, such as that made by the point of a needle or thorn. Rarely, the sheath may become infected by extension of a pulp-space infection -Tendon sheath -Fascial planes -Lymphatics Bacterial hypertrophy synovial accumulation infection synovial mb fluid of pus Cartilage destruction Soft tissue edema Capsular distention bursitis, AJR 2004; 183:29-34 •Hatzenbuehler J., Pulling T. J., Diagnosis and Mangement of. Tenosynovitis is the inflammation or infection of a tendon and its synovial sheath, which can occur in any joint, though it is most frequently seen in the hands and wrist. 1 Within the wrist, infectious tenosynovitis is more commonly described in the flexor tendons, and less commonly in the extensor tendons. 2 Etiologies of infectious. Acute monoarthritis in adults can have many causes (), but crystals, trauma, and infection are the most common.Prompt diagnosis of joint infection, which often is acquired hematogenously, is.

Synovitis and tenosynovitis: Causes, symptoms, diagnosis

  1. Synovial osteochondromatosis is a benign neoplastic condition which manifests as multiple cartilaginous or osteocartilaginous nodules within a joint, bursa and tendon sheath. It typically results in pain and stiffness of the affected joint, and is thought to arise as a result of synovial membrane proliferation and metaplasia.[1][1] We report the diagnosis and management of a 36-year-old man.
  2. Flexor tenosynovitis is an infection of synovial sheath that surrounds the flexor tendon. It is often caused by penetrating trauma but can also result from the direct spread of continuous.
  3. Rheumatoid arthritis, infection and sometimes trauma (1-2). Rice bodies resemble melon seeds and millet seeds. There are different sites of rice body formation which have been reported such as knee, shoulder, extensor tendon in the hand, wrist, carpal tunnel and exor tendon sheath. Rice bodies are als

[Treatment of traumatic lesions of the bursa olecrani and

Pyogenic Flexor Tenosynovitis Emily E. Jewell Reid W. Draeger INTRODUCTION Flexor tendon sheath infections are a surgical urgency because they can have devastating outcomes such as loss of motion, deformity, and loss of digit if treatment is delayed. Kanavel originally described the physical presentation of pyogenic flexor tenosynovitis (PFT) in 1912.1 Despite improving antibiotic and Bursitis can occur for a variety of reasons, including: Strenuous or repeated physical activity. Injury or trauma. Infection. Underlying rheumatic conditions such as pseudogout and gout. Inflammatory disorders such as rheumatoid arthritis, ankylosing spondylitis, and systemic lupus erythematosus. Too much friction and/or pressure on a bursa can.

Introduction. Inflammation of synovial membrane of digital flexor tendon sheath +/- fibrous layer. Cause: idiopathic, traumatic, chronic fibrosis and synovial proliferation, septic, injuries to SDFT/DDFT/sesamoidean ligaments.; Signs: localized swelling of the palmar/plantar aspect of the fetlock region between the suspsensory ligament and flexor tendons and plantar/palmar pastern (digital. tendon insertions and synovial structures like periarticular bursa of the shoulder, knee, wrist and ankles, which are the most common sites of involvement. According to author [5], rice bodies are formed by the necrotized particles which break away from the synovium and adhere to the fibrin in the joint space, tendon sheath or inside the bursa

Tenosynovitis is inflammation of this sheath. The cause of the inflammation may be unknown, or it may result from: Diseases that cause inflammation. Infection. Injury. Overuse. Strain. The wrists, hands, ankles, and feet are commonly affected because the tendons are long across those joints. But, the condition may occur with any tendon sheath The sheath in which a tendon slides may also be traumatized. Inflammation of the tendon within the sheath is called tendinitis. This inflammation may be due to infection, direct injury, or injury from repetitive motion. Tendons are injured when the stress placed on them is greater than the fibers can tolerate compression (6,7). Persistent synovial drainage through a patent com-munication between the flexor sheath and the skin has not been previ-ously described in patients with severe proliferative tenosynovitis. There are two documented series reporting flexor tenosynovial fistula forma-tion of the hand after injury or trigger finger release (8,9)

Synovitis: Causes, Symptoms, Diagnosis, and Treatmen

  1. In bursitis there is thickening and proliferation of the synovial lining, bursal adhesions, villus formation, tags, and deposition of chalky deposits. This may result from repetitive stress, infection, autoimmune disease, or trauma. Key diagnostic findings are localized pain and tenderness over a bursa and swelling if superficially sited
  2. A primary infection is commonly caused by direct inoculation from a penetrating injury to the finger and inoculation of the synovial fluid with bacteria . The bacterial growth causes increased pressure within the sheath, leading to impaired vascular flow, severe impairment of the tendon's gliding mechanism, tendon's ischemia, and subsequent.
  3. The acute infectious etiology of pyogenic flexor tenosynovitis (PFT) is a closed-space infection of the flexor tendon sheath, which represents a surgical emergency. Untreated PFT may rapidly destroy the gliding mechanism, cause adhesion formation, and potentially give rise to necrosis of the tendon and its fibro-osseous sheath

Shoulder Synovial Membrane. Synovia is a transparent alkaline, viscid fluid resembling the white of an egg, secreted by the synovial membrane and contained in joint cavities, bursa, and tendon sheaths. Etiology . Each facet joint has its own synovial membrane that surrounds the joint and secretes a tiny amount of lubricating fluid bursa (bûr`sə), closed fibrous sac lined with a smooth membrane, producing a viscous lubricant known as synovial fluid.Bursas are found in regions where muscles or tendons rub against other muscles, tendons, or bones. The bursas function in two ways, lubricating points of friction, and dissipating force by distributing it through a fluid medium Navicular Bursitis. The navicular bursa is a small fluid-filled structure in the foot that acts as a cushion where the deep digital flexor tendon passes over the bone and changes direction. A bursa has many properties similar to a joint or a tendon sheath. Bursae are lined with a membrane which produces synovial fluid

Bursitis is the inflammation of one or more bursae (fluid filled sacs) of synovial fluid in the body. They are lined with a synovial membrane that secretes a lubricating synovial fluid. There are more than 150 bursae in the human body. The bursae rest at the points where internal functionaries, such as muscles and tendons, slide across bone.Healthy bursae create a smooth, almost frictionless. Cause: Inflammation of the tendon sheath (tenosynovitis) occurs either due to a mechanical irritation (e.g. a shoe tied too tightly, or from a kick), or often from a straining of the ligaments in the ankle joint. In some cases, a prolonged inflammation of the tendon sheath can cause a weakening, and in worst cases a rupture of the tendon. Inflammation of the tendon sheath is often seen as a. They are non-neoplastic lesions and are caused by herniation of the synovium through the joint capsule or tendon sheath into neighboring tissues, or by expansion of a pre-existing bursa. In adults, synovial cysts frequently develop in association with a variety of joint disorders, including trauma, osteoarthritis, crystal arthropathies. Olecranon bursitis is the inflammation of the olecranon bursa. The posterior olecranon recess is the common place for identificating joint fluid. Sonographic features include fat pad displacement may result from anechoic simple fluid, heterogeneous joint fluid (hemorrhage or infection) and synovial hypertrophy (diffuse) (Jacobson, pp 85-92, 2013)

FIG..CaseII.(A)Apear-shaped cyst ispresent extending from thesynovial sheath of biceps and (B) communicating with shoulder joint cavity and thesubscapularis bursa. 68 Zoran L.Barbaric andLionel W.Young NOVEMBER, 1972 A A-SYNOVIAL SHEATH OFBICEPS B-SUBSCAPULARIS BURSA FIG. 4. Case II. Diagrammatic presentation. (A)Normal shoulder joint bursae The synovium or synovial membrane is a soft tissue lining of joints bursae and tendon sheaths and seems to be responsible for the secretion and absorption of synovial fluid components, whereas the synovial fluid arises from leakage of the intimal capillaries 1-4. On this page: Article: Gross anatomy. Histology. Radiographic features. Development Characteristic MRI findings of tuberculous infection of the wrist include synovial thickening around the flexor and extensor tendons and synovial fluid collection that contains small low-signal and nonenhanced foci in the tendon sheath. Bone erosion, osteomyelitis, and median nerve encasement are also frequently present Injury to this 'sheath' means production of this synovial fluid is compromised or the fluid leaks outside the sheath. Either way, sheath damage often results in inadequate tendon lubrication. If you are suffering from an injury of this type to the Achilles tendon, the term is known as Tenosynovitis (or paratenonitis / peritendinitis)