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http://www.medicinenet.com/joint_pain/symptoms.htm
Causes of Knuckle Pain. Knuckle bone pain is more commonly a result of injury, particularly with an impact on a hard object. Knuckle joint pain is often caused by overusing the hands and finger leading to muscle, tendon and joint strain.
http://www.healthhype.com/knuckle-pain-on-hand-bones-and-joints-causes-and-treatment.html
I wake up in the morning, and my fingers are all so stiff that they snap open and closed, as if the bones are being forced together from tight tendons, and it takes a full five minutes of exercising my fingers to get them back to a normal, usable state.
https://www.quora.com/Why-are-my-finger-joints-so-stiff-in-the-morning
Joint pain is known as arthralgia and may affect any joint in the body. It can be associated with other signs and symptoms like stiffness, swelling of the joint, redness of the overlying skin and decreased mobility. Pain may occur in small or large joints only or in both simultaneously.
http://www.healthhype.com/painful-finger-joints-knuckles-pain-or-arthritis-and-causes.html
Injury can also affect the ligaments, cartilage, and bones within the joint. Pain is also a feature of joint inflammation (arthritis, such as rheumatoid arthritis and osteoarthritis) and infection, and extremely rarely it can be a cause of cancer of the joint. Pain within the joint is a common cause of shoulder pain, ankle pain, and knee pain. Joint pain is also referred to as arthralgia. The sexually transmitted diseases (STDs) chlamydia and gonorrhea can lead to joint pain. Symptoms and signs associated with joint pain can include. joint redness,
http://www.medicinenet.com/joint_pain/symptoms.htm
Knuckle Pain on Hand (Bones and Joints) Causes and Treatment. Hand Knuckles. The knuckles refers to the joints of the fingers and toes and in particular to the bony bumps located by these joints. The term is more common when referring to the hand and especially to the head of the hand bones where it meets the finger bones.
http://www.healthhype.com/knuckle-pain-on-hand-bones-and-joints-causes-and-treatment.html
Pain may be of the joint itself (intra-articular) or around the joint (peri-articular). Joints do not occur in isolation – it is formed by articulating surfaces of bones, supported by ligaments and movement is due to the action of associated muscles and its tendons.
http://www.healthhype.com/painful-finger-joints-knuckles-pain-or-arthritis-and-causes.html
Painful Joints and Inflamed Joints. Inflammation is a physiological response to injury characterized by four cardinal features – pain, swelling, redness and heat. When a joint is inflamed, it is referred to as arthritis. However, pain in the joints may occur without inflammation and in this case it is simply referred to as arthralgia. However, the term ‘arthralgia’ is broad and can still be attributed to pain associated with inflammation.
http://www.healthhype.com/painful-finger-joints-knuckles-pain-or-arthritis-and-causes.html
Painful Finger Joints (Knuckles), Pain or Arthritis and Causes. The joints experience a significant amount of stress and strain throughout life. From bearing the body weight to endlessly moving in daily activity, joints are prone to a range of injuries and diseases as is the case with any part of the body.
http://www.healthhype.com/painful-finger-joints-knuckles-pain-or-arthritis-and-causes.html
The human hand has 27 bones which move at joints (articulates) to make the hand one of the most flexible parts of the body. The number of bones in each part of the hand is as follows 1  : Wrist : 8 bones (wrist bones or carpals)  Hand (palm) : 5 bones (hand bones or metacarpals)
http://www.healthhype.com/knuckle-pain-on-hand-bones-and-joints-causes-and-treatment.html
why does my knuckles hurt and very sore
Knuckles hurt and very sore because of overusing the hands and finger leading to muscle, tendon, and joint strain.  Knuckle pain is caused by an overusing the hands and finger leading to muscle, tendon and joint strain.