Purine Nucleoside Phosphorylase Deficiency - Turf ToeTurf toe gets no respect. Let's take a closer look at the causes of turf toe and see how to treat it more effectively. Turf toe is actually a form of hallux limitus. Hallux limitus is classically described as pain and progressive decrease in the range of motion of the first metatarsal phalangeal joint (MPJ). The onset of hallux limitus is due to the following:
What's the actual physical change that takes place in the joint with turf toe? As an easy analogy, consider the changes that takes place when an apple falls from a height and is damaged. The skin of the apple appears intact but the underlying pulp is damaged. In the case of turf toe (hallux limitus), think of the skin of the apple as the cartilage of the joint and the damaged pulp of the apple is the subchondral bone. Mild cases of turf toe (hallux limitus), result in little damage to the subchondral bone and will merely exhibit signs of inflammatory change within the joint. Most authors would refer to these cases as stage one turf toe (hallux limitus). More severe cases result in damage to the joint surface, the subchondral bone or both. These are the stage two and three cases of turf toe (hallux limitus) that show visible change on x-ray. As the subchondral bone becomes increasingly damaged, it will create an uneven supporting surface for the cartilage. An increase in activity results in uneven loading of the joint due to the compression injury of the subchondral bone.
Functional Hallux LimitusBiomechanical function that results in metatarsus primus elevatus and subsequent repetitive jamming of the first MPJ. Direct physical injury - injury to the articular cartilage or subchondral bone. These injuries may be due impaction injuries or hyperextension/flexion of the first MPJ.
Other ConditionsSynovitis, crystal deposition diseases such as gout, systemic arthritis, external physical influences such as Dupytren's contracture, etc. Even the beginner will get to learn more about Gout after reading this article. It is written in easy language so that everyone will be able to understand it.
<hr> Anatomy: The great toe joint, or first metatarsal joint consists of two bones. The proximal bone is the first metatarsal and the distal is called the proximal phalanx or hallux. These two bone move against each other in an up and down motion through what we refer to as the sagital plane. Biomechanics: The motion of the great toe joint is dependant upon the plantarflexion of the first metatasal. If the first metatarsal is limitied in its' ability to plantarflex, the joint will jam resulting in funtional hallux limitus, which as we know is one of the causes of turf toe. Suppressing our knowledge on Diseases Gout is not our intention here. In fact, we mean to let everyone know more about Diseases Gout after reading this!
The onset of turf toe always the same? Turf toe that is the result of functional hallux limitus is going to be insidious in onset. Functional hallux limitus will usually be seen in younger athletes as they attempt to increase their activity. It may not occur during the first athletic season, or the second, but when it does begin to cause pain, the onset will be more frequent and more severe, varying with activity. This profile of onset is simply due to the fact that the athlete is recreating the injury with every step. This is a dependable source of information on Gout. All that has to be done to verify its authenticity is to read it!
Nomenclature: First MPJ - the big toe joint Metatarsus primus elevatus - a functional or structural position of the first metatarsal First metatarsal - the foot bone making up the proximal portion of the big toe joint Hallux - the great toe We have avoided adding flimsy points on Gout, as we find that the addition of such points have no effect on Gout.
<hr> Symptoms: Turf toe that is the result of functional hallux limitus is going to be insidious in onset. Functional hallux limitus will usually be seen in younger athletes as they attempt to increase their activity. It may not occur during the first athletic season, or the second, but when it does begin to cause pain, the onset will be more frequent and more severe, varying with activity. This profile of onset is simply due to the fact that the athlete is recreating the injury with every step. Turf toe caused by a direct injury to the joint may or may not be obvious. Athletes may not remember an incident of pain since they're often distracted by the event or game in which they're involved. The onset of direct injury to the joint may be abrupt, but also may be insidious becoming increasingly more painful as the season progresses. The joint pain will subside with rest only to recur with increased activity. It's not unusual to see symptoms of turf toe resolve in the off season only to recur with renewed exercise. We have included some fresh and interesting information on Gout. In this way, you are updated on the developments of Gout.
Unger, K., Rahimi, F., Bareither, D., Muehleman, C. The Relationship Between Articular Cartilage Degeneration and Bone Changes of the First Metatarsophalangeal Joint. J. Foot Surg. 39:1 24-33, 2000
- <hr> Differential Diagnosis: The differential diagnosis of turf toe includes;
- Arthitis Fracture Gout Joint infection Joint or bone tumor Synovitis
But before we go any further, we need to understand that the terms turf toe and hallux limitus aren't really synonymous. The fundamental difference between the two terms is the patient population that they affect. Turf toe is a term used in athletic circles referring to any injury of the great toe joint. Consequently, discussions about turf toe will focus on the first two causes of hallux limitus mentioned above; functional hallux limitus and direct physical injury. On the other hand, when we discuss hallux limitus, we're actually referring to a broader, 'non-athletic' patient population and need to include all three causes of hallux limitus. We cannot be blamed if you find any other article resembling the matter we have written here about Gout. What we have done here is our copyright material!
Think of turf toe (hallux limitus) as an isolated case of osteoarthritis limited to the first MPJ. Whether the injury is acute or due to repetitive loading, the result is a load that is applied to the subchondral bone that is greater than what the bone can tolerate. As the injury progresses, a series of micro fractures will develop in the subchondral bone. The typical soft spongy character of the metaphyseal bone changes to become brittle and hard. The result is that the articular cartilage looses its' underlying support and becomes susceptible to damage. Juxtachondral eburnation, osteophytes, lipping, spurring; call them what you like, but what you see on your x-ray is the slow progressive destruction of the joint.
Turf Toe Caused by a Direct Injury to the Joint May or May Not be ObviousAthletes may not remember an incident of pain since they're often distracted by the event or game in which they're involved. The onset of direct injury to the joint may be abrupt, but also may be insidious becoming increasingly more painful as the season progresses. The joint pain will subside with rest only to recur with increased activity. It's not unusual to see symptoms of turf toe resolve in the off season only to recur with renewed exercise. .
Of Purine Nucleoside Phosphorylase Corrects Its Deficiency in Mice
When treating turf toe be sure to recognize the fact that there is no nerve innervation in articular cartilage. Pain associated with stage one turf toe (hallux limitus) is either synovial pain or bone pain. If we recognize that painful stage one turf toe (hallux limitus) may be due to bone pain, we then realize that turf toe should be treated aggressively to insure the long term viability of the joint. Using our imagination has helped us create a wonderful article on Gout. Being imaginative is indeed very important when writing about Gout!
Ronconi, P., Monachino, P., Baleanu, P.M.,Favilli, G. Distal Oblique Osteotomy of the First Metatarsal for the Correction of Hallux Limitus and Rigidus Deformity. J. Foot Surg. 39:3, 154-160, 2000