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Doctor insights on: Joint Capsule

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Joint Capsule (Overview)

The lining that connects between 2 bones.


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What is the function of a joint capsule?

What is the function of a joint capsule?

See below: It encapsulates the end of 2 bones that from the joint and holds in the synovial fluid which bathes the joint.

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Joint Capsule (Overview)

The lining that connects between 2 bones.


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What is the main function of the joint capsule?

What is the main function of the joint capsule?

To Stabilize Joints: The joint capsule provides joint stability. If injured it can lead to stiffness and may then be surgically removed, without compromising stability as long as the joint's ligaments are kept intact. While this seems counterintuitive, it's because joints can undergo changes that turn the capsule from a necessary structure to a problem that is best removed (it regrows back more normal).

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Do all joints have a joint capsule?

Do all joints have a joint capsule?

No: A synovial joint has a capsule surrounding it. These are joints like the shoulder, knee, hip and many many others. There are also fibrous joints (like the sutures in the skull) and cartilaginous joints (like where the ribs meet the sternum). Each of these kinds of joints have numerous subtypes as well.

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Would a fx of the lateral malleolus with partially torn aftl and deltoid ligs and soft tissue injury in joint capsule be described as bimalleor?

Would a fx of the lateral malleolus with partially torn aftl and deltoid ligs and soft tissue injury in joint capsule be described as bimalleor?

Bimal equival: A single fracture of the lateral malleolus with a displaced, torn deltoid ligament can be described as a bimalleolar equivalent. It's not truly a bimalleolar fracture because there is only one "true" fracture, but because of the deltoid injury/joint displacement, it's treated as a more serious ankle fracture injury.

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Why does the anterior side of the shoulder joint capsule tear more commonly than any other side during shoulder dislocations?

Why does the anterior side of the shoulder joint capsule tear more commonly than any other side during shoulder dislocations?

Instability forces: Shoulder stability is provided by the surrounding muscles, the glenohumeral ligaments/capsule and the labrum. The shoulder is most unstable during a trauma, when the shoulder is forced anteriorly (to the front) and inferiorly (below the shoulder). This puts significant force on the anterior capsule often resulting in tearing/stretching. An abducted & externally rotated shoulder is most vulnerable

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I have a torn big toe joint capsule and did PRP 10 weeks ago. Stil not healed. Can I deep tissue masage it and take comfrey (anti-inflam?) and silica?

I have a torn big toe joint capsule and did PRP 10 weeks ago. Stil not healed. Can I deep tissue masage it and take comfrey (anti-inflam?) and silica?

Why prp: I don't believe prp is FDA approved for this type of injury. Please ask you doctor. Capsule injury usually heal after 21 days of immobilization

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3mm lump on epl tendon snags painfully at pip on slight flexion. Any excision risks? Fluid escape from joint capsule? Cause ganglion? Other risks?

3mm lump on epl tendon snags painfully at pip on slight flexion. Any excision risks? Fluid escape from joint capsule? Cause ganglion? Other risks?

Real cause?: Epl tendon inserts at the base of the middle phalynx so central slip snagging at pip joint is more likely a tear in fibers extending from lateral band to central slip causing abnormal shift of tendons. There is no structure that central slip [epl] would get caught on. Lump is most likely scar. Recommend splinting protocol first before considering any surgery. F/u with hand surgeon.

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Could I've lasting probs after nondisplaced weber b fx+partially torn aftl+deltoid soft tiss joint capsule 15wks no union symptoms now offered plate+b graft?

Possibly: Your fracture pattern is pretty common for ankle fracture variants. I would not make much of the deltoid and atfl tears as these occur with bad "sprains". The fact that your fracture was nondisplaced made it a stable injury. You are borderline definition of nonunion. May try bone stimulator. Probably just need plate and stable fixation. Doubt you need bone graft. Once fixed should do fine.

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Would a webr b dist fib fx with partial aftl and delt tear with some soft tissue in joint capsule and tenderness in Achilles be stable or unstable?

Ankle fracture: Weber b fracture means the level of fibula fracture starts at the ankle joint. Whether its stable or not can depend on fracture displacement, rotation, etc. In your case, you may have a bi-malleolar equivalent fracture. To determine if you need surgery or non-surgical treatment, see your podiatric surgeon.

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How long does a broken toe, torn MCL in foot, torn joint capsule and swelling in the bone take to heal?

How long does a broken toe, torn MCL in foot, torn joint capsule and swelling in the bone take to heal?

Approx 6-8 weeks.: In healthy people, most bones take 6-8 weeks to heal. However, the body continues the healing process for a full year after injury or surgery. So for example if you had an MRI it will still show activity even after the 6-8 weeks.

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Non displaced weber b fracture with partially torn deltoid and aftl ligaments and soft tissue damage in the joint capsule delayed union reasons for it

Non displaced weber b fracture with partially torn deltoid and aftl ligaments and soft tissue damage in the joint capsule delayed union reasons for it

Healing: This type of ankle fracture is a progression of a severe twisting injury to the ankle. It appears that you have had an MRI and every ankle MRI will show ligament injury. These will heal but will also be present on an MRI for a very long time. Clinical healing of a fracture happens sooner then MRI findings show healing. All fractures need 6 weeks at least for solid healing and union.

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Mri shows bone marrow edema of pisiform, trigger thumb, mcp capsulitis and mild distension of first cmc joint capsule. What does it all mean?

Mri shows bone marrow edema of pisiform, trigger thumb, mcp capsulitis and mild distension of first cmc joint capsule. What does it all mean?

Basal thumb joint OA: The base of the thumb is a very common spot for osteoarthritis. This diagnosis can usually be made without imaging studies, so if your doctor ordered an MRI scan, I suspect the doctor had some special concern or diagnosis in mind.

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What happens to you if there is an infection in the knee joint under the capsule?

What happens to you if there is an infection in the knee joint under the capsule?

Unsure?: By your quesiton, I am unsure. However, if you believe you have an infections in your knee, anywhere, please see a doctor immediately and have it examined and appropriately treated. Knee infections are very serious and the sooner it is treated, the better. Don't delay. Get seen!

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Which are the named ligaments of the capsule of the hip joint?

Which are the named ligaments of the capsule of the hip joint?

Capsular Ligament: The capsular ligament consists of two types of fibers, circular and longitudinal. Some of the longitudinal fibers form the retinacula and the circular fibers form the zona orbicularis. It is attached to the acetabulum and anterior inferior iliac spine; and connects to the transverse ligament, iliofemoral ligament, pubocapsular, and ischiocapsular ligaments.

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Dr. Stratos Christianakis
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Joints (Definition)

Joints are parts of the body, formed by the cartilage-covered ends of bones plus the strong, flexible ligaments that attach the bones to one another. Movements at the joints in the body allow the different parts of the body to move in ...Read more