Items in AFP with MESH term: Knee Injuries
ABSTRACT: Iliotibial band syndrome is a common knee injury. The most common symptom is lateral knee pain caused by inflammation of the distal portion of the iliotibial band. The iliotibial band is a thick band of fascia that crosses the hip joint and extends distally to insert on the patella, tibia, and biceps femoris tendon. In some athletes, repetitive flexion and extension of the knee causes the distal iliotibial band to become irritated and inflamed resulting in diffuse lateral knee pain. Iliotibial band syndrome can cause significant morbidity and lead to cessation of exercise. Although iliotibial band syndrome is easily diagnosed clinically, it can be extremely challenging to treat. Treatment requires active patient participation and compliance with activity modification. Most patients respond to conservative treatment involving stretching of the iliotibial band, strengthening of the gluteus medius, and altering training regimens. Corticosteroid injections should be considered if visible swelling or pain with ambulation persists for more than three days after initiating treatment. A small percentage of patients are refractory to conservative treatment and may require surgical release of the iliotibial band.
ABSTRACT: Braces and splints can be useful for acute injuries, chronic conditions, and the prevention of injury. There is good evidence to support the use of some braces and splints; others are used because of subjective reports from patients, relatively low cost, and few adverse effects, despite limited data on their effectiveness. The unloader (valgus) knee brace is recommended for pain reduction in patients with osteoarthritis of the medial compartment of the knee. Use of the patellar brace for patellofemoral pain syndrome is neither recommended nor discouraged because good evidence for its effectiveness is lacking. A knee immobilizer may be used for a limited number of acute traumatic knee injuries. Functional ankle braces are recommended rather than immobilization for the treatment of acute ankle sprains, and semirigid ankle braces decrease the risk of future ankle sprains in patients with a history of ankle sprain. A neutral wrist splint worn full-time improves symptoms of carpal tunnel syndrome. Close follow-up after bracing or splinting is essential to ensure proper fit and use.
ABSTRACT: Family physicians often encounter patients with acute knee trauma. Radiographs of injured knees are commonly ordered, even though fractures are found in only 6 percent of such patients and emergency department physicians can usually discriminate clinically between fracture and nonfracture. Decision rules have been developed to reduce the unnecessary use of radiologic studies in patients with acute knee injury. The Ottawa knee rules and the Pittsburgh decision rules are the latest guidelines for the selective use of radiographs in knee trauma. Application of these rules may lead to a more efficient evaluation of knee injuries and a reduction in health costs without an increase in adverse outcomes.
ABSTRACT: Family physicians frequently encounter patients with knee pain. Accurate diagnosis requires a knowledge of knee anatomy, common pain patterns in knee injuries, and features of frequently encountered causes of knee pain, as well as specific physical examination skills. The history should include characteristics of the patient's pain, mechanical symptoms (locking, popping, giving way), joint effusion (timing, amount, recurrence), and mechanism of injury. The physical examination should include careful inspection of the knee, palpation for point tenderness, assessment of joint effusion, range-of-motion testing, evaluation of ligaments for injury or laxity, and assessment of the menisci. Radiographs should be obtained in patients with isolated patellar tenderness or tenderness at the head of the fibula, inability to bear weight or flex the knee to 90 degrees, or age greater than 55 years.
ABSTRACT: Methods of preventing and treating knee injuries have changed with the rapid development and refinement of knee braces. Prophylactic knee braces are designed to protect uninjured knees from valgus stresses that could damage the medial collateral ligaments. However, no conclusive evidence supports their effectiveness, and they are not recommended for regular use. Functional knee braces are intended to stabilize knees during rotational and anteroposterior forces. They offer a useful adjunct to the treatment and rehabilitation of ligamentous knee injuries. Patellofemoral knee braces have been used to treat anterior knee disorders and offer moderate subjective improvement without significant disadvantages. Additional well-designed studies are needed to demonstrate objectively the benefits of all knee braces. Knee braces should be used in conjunction with a rehabilitation program that incorporates strength training, flexibility, activity modification and technique refinement.
ABSTRACT: Knee pain is a common presenting complaint with many possible causes. An awareness of certain patterns can help the family physician identify the underlying cause more efficiently. Teenage girls and young women are more likely to have patellar tracking problems such as patellar subluxation and patellofemoral pain syndrome, whereas teenage boys and young men are more likely to have knee extensor mechanism problems such as tibial apophysitis (Osgood-Schlatter lesion) and patellar tendonitis. Referred pain resulting from hip joint pathology, such as slipped capital femoral epiphysis, also may cause knee pain. Active patients are more likely to have acute ligamentous sprains and overuse injuries such as pes anserine bursitis and medial plica syndrome. Trauma may result in acute ligamentous rupture or fracture, leading to acute knee joint swelling and hemarthrosis. Septic arthritis may develop in patients of any age, but crystal-induced inflammatory arthropathy is more likely in adults. Osteoarthritis of the knee joint is common in older adults.
A Tool for Evaluating Patients with a Knee Injury - Improving Patient Care
Lateral Knee Pain after Aerobic Exercise - Photo Quiz
Evaluating the Patient with a Knee Injury - Point-of-Care Guides
ABSTRACT: There are an estimated 80,000 to 100,000 anterior cruciate ligament (ACL) repairs in the United States each year. Most ACL tears occur from noncontact injuries. Women experience ACL tears up to nine times more often than men. Evaluation of the ACL should be performed immediately after an injury if possible, but is often limited by swelling and pain. When performed properly, a complete knee examination is more than 80 percent sensitive for an ACL injury. The Lachman test is the most accurate test for detecting an ACL tear. Magnetic resonance imaging is the primary study used to diagnose ACL injury in the United States. It can also identify concomitant meniscal injury, collateral ligament tear, and bone contusions. Treatment consists of conservative management or surgical intervention, with the latter being the better option for patients who want to return to a high level of activity. Patients who undergo surgery must commit to appropriate rehabilitation for the best outcome. Long-term sequelae of ACL injury include knee osteoarthritis in up to 90 percent of patients. Primary prevention of ACL injury includes specific proprioceptive and neuromuscular training exercises to improve knee stability.