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Query: UMLS:C0231749 (knee pain)
 2,815 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A condition causing knee pain with retropatellar crepitus similar to chondromalacia patellae is described. The symptoms seem to be due not to chondromalacia of the patella, but to a local synovial thickening proximal to the articular surface of the medial femoral condyle. Thirteen patients, aged 10 to 21 years, were operated upon because of this condition, three of them bilaterally. In most of them the changed synovial membrane was excised. The operation in eleven of the knees was followed by considerable or complete relief. Of the remaining five knees, three were temporarily improved.
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PMID:Pseudochondromalacia patellae. 67 7

Chondromalacia of the patella is frequently encountered in patients with anterior knee pain. Arthroscopic chondroplasty with perforation of subchondral bone remains a popular treatment alternative in spite of the inferior mechanical properties of the fibrocartilaginous tissue that this procedure is designed to promote. We report a case of cystic degeneration of the patella as a previously unrecognized complication following the procedure.
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PMID:Cystic degeneration of the patella after arthroscopic chondroplasty and subchondral bone perforation. 141 11

Spontaneous osteonecrosis about the knee typically is a disease of the elderly characterized by an acute onset of pain. The exact cause of this condition has long been debated, although a causative relationship between meniscal tears and spontaneous osteonecrosis about the knee has been postulated. Seven patients with knee pain, meniscal tears, and chondromalacia without initial evidence of osteonecrosis at magnetic resonance (MR) imaging underwent arthroscopic surgery with meniscal recontouring or repair and cartilage shaving. These patients returned within 2-14 months with recurrent pain in the treated knee. MR imaging then demonstrated abnormalities consistent with osteonecrosis. Osteonecrosis of the femoral condyle or tibial plateau may be a late sequela of meniscal injury in association with chondromalacia and arthroscopic surgery. This diagnosis should be suspected in patients with recurrent knee pain after arthroscopic repair of meniscal tears. The precise relationship of this pattern of osteonecrosis to that previously described as spontaneous requires further investigation.
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PMID:Osteonecrosis of the knee after arthroscopic surgery: diagnosis with MR imaging. 199 31

The knee extensor mechanism was examined in 32 male competitive volleyball players (Group V) and in a control group of 49 young adult males (Group C) to evaluate the effects of previous jumping activity on the knee extensor mechanism. Several variables were recorded by means of a structured questionnaire, and by clinical and radiographic examination. The amount of physical activity from the age of 7 years onward was significantly greater in Group V than in Group C. The incidence of anterior knee pain during the year preceding the examination was higher in Group V (31%) than in Group C (6%; P less than 0.01). The most common reason for anterior knee pain in Group V was so-called "jumper's knee." No significant difference between the groups was found in the incidence of clinical symptoms and signs of patellar chondromalacia. There were radiologically detectable soft tissue calcifications at the upper or lower pole of the patella or anterior to the patella in 38% of the subjects in Group V, but no such calcifications were seen in Group C (P less than 0.001). However, persistent symptoms did not correlate with the calcifications. Group V subjects had a slight but significant trend to patella alta when compared to Group C (P less than 0.05) according to the Blackburne and Peel index.
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PMID:The effect of volleyball playing on the knee extensor mechanism. 230 84

Fifty-three consecutive patients were treated for a symptomatic plica mediopatellaris of the knee joint with arthroscopic resection of the plica. Forty-six patients were followed up 43 months after the operation. Preoperatively, 40% of the patients had anterior knee pain on exertion, and 60% had mechanical symptoms. The symptoms were preceded by a knee trauma in 50% of the patients. The overall results after arthroscopic resection were satisfying, with 80% excellent or good results according to the Lysholm score, and 59% of the patients were completely free of symptoms. The presence of chondromalacia of the patella or femoral condyles or malalignment of the patella did not worsen the results. It is concluded that arthroscopic resection of a pathological plica mediopatellaris generally gives good results, even if other pathology of the knee joint is present.
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PMID:The pathological plica in the knee. Results after arthroscopic resection. 264 96

The understanding and treatment of the young athlete's knee has improved and continues to do so as arthroscopy and good long-term follow-up studies guide the process. In the management of epiphyseal fractures about the knee the presence of associated ligament injury and the high likelihood of a growth plate injury is now well documented. In the management of ligament injuries and internal derangements, arthroscopy has profoundly changed diagnosis and treatment. Pathology can be precisely identified and the appropriate treatment initiated to preserve an athletic career and possibly prevent degenerative arthritis in adulthood. Lastly, patellofemoral pain continues to be a difficult problem to treat, but a more scientific approach is evolving. This has been facilitated by a better understanding of the varied etiologies for anterior knee pain, and a trend away from classifying all such conditions as chondromalacia.
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PMID:The young athlete's knee: recent advances. 304 60

Fabellectomy gave immediate and continued relief of symptoms to a patient with pain of long duration in the lateral aspect of both popliteal fossae. Attention should be given to pathologic changes of the fabella in cases with intermittent posterolateral knee pain and normal examination of the knee, except for tenderness on pressure over the fabella. The clinical importance of the fabella is discussed with special regard to chondromalacia.
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PMID:Painful fabella. A case report with review of the literature. 381 95

The variety of anatomic conditions is critically confronted with the so-called dysplasias of the patella. Is chondromalacia or anterior knee pain a clinical diagnosis? The physiological aspects of the tension forces acting on the patella with its position in the midst of tendons and ligaments in valgus and in varus knees are discussed. What may the automatic rotation in extension effect on the patellofemoral joint-compartment?
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PMID:[Femoropatellar joint. Aspects of anatomy, physiology and pathophysiology]. 406 95

In 30 patients with patellofemoral chondromalacia and osteoarthrosis the maximal isokinetic knee extension strength was measured. The pain evoked during the recordings was rated on a nine-grade scale. The peak extension torques were markedly lower than in the non-diseased knee and in a reference group of healthy volunteers. Twenty months after advancement of the tibial tuberosity, the muscle strength was significantly increased and pain significantly alleviated, well parallelling the clinical improvement. Intra-articular anaesthesia almost instantaneously increased the knee extension torque considerably, although knee pain was unchanged.
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PMID:Isokinetic knee extension strength and pain before and after advancement osteotomy of the tibial tuberosity. 666 Oct 18

Patella alta is radiologically defined by an Insall index equal to or greater than 1.3. In 50 patients suffering from pain of the femur and patella, roentgenographic studies consisting of a simple profile view and occasionally completed by a view through Smillie's angle with the knee hyperextended, revealed patella alta. The stretching of the patellar tendon is facilitated by excessive tension during growth and by excessively strenuous physical exercises; patella alta can occasionally be complicated by Osgood-Schlatter's or Sinding-Larsen Johansson's disease. Ruptured tendons have occasionally been observed. Genu recurvatum can also lead to patella alta. The joint should be routinely examined for excessive mobility. Patella alta is often associated with various affections of the extensor apparatus of the knee: pathology secondary to injury, external malposition, gonarthrosis, supratrochlear erosions of the femur. The importance of the role of this condition with respect to patellar chondromalacia has been estimated to varying degrees. The diagnosis of patella alta should be considered in all cases of knee pain.
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PMID:[Critical study of patella alta. II. Patella alta and femoropatellar pathology]. 712 23


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