Rupture of the patellar tendon is a rare injury requiring acute repair to reestablish knee extensor continuity and to allow early motion. Different pathomechanisms have been postulated, and multiple techniques for repair have been described in the literature. Firstly, the current study reviews the epidemiology, pathomechanism, and risk factors. Secondly, we compare the outcome of two augmentation techniques after end-to-end sutures: reinforcement with either a wire cerclage or a @entity1480 cord. In the first part of the study, the medical records of 66 @entity1 with 68 @entity397 were reviewed. For the second part, 33 @entity1 were included who had no @entity130 to the extensor mechanism of the knee and had suffered an indirect, @entity258 followed by immediate repair. Twenty-seven @entity1 with 29 @entity397 of the patellar tendon returned for follow-up. Follow-up averaged 8.1 years (range 1-16 years). In the follow-up group, 22 @entity397 had augmentation with a wire cerclage (group A), and 7 @entity397 had augmentation with a 2-mm @entity1480 cord (group B). Follow-up evaluation consisted of a subjective questionnaire, a physical and radiographic examination, the Hospital for Special Surgery Knee Score, and the Insall-Salvati ratio. Nineteen @entity1 underwent Cybex isokinetic strength testing of the quadriceps. Indirect, low-velocity @entity130 occurred most often in the 30-40 year age group, whereas complex knee @entity130 or knee luxations were more evenly distributed. In 10 of 46 @entity1 with an indirect, @entity258 , there was a history of @entity130 and illness to the extensor mechanism of the knee, compared with 1 of 22 @entity1 with a high-velocity complex knee @entity130 . In the follow-up group, no @entity1 sustained a rerupture. Two of 22 @entity1 had an extension lag in group A compared with no extension lag in group B. Average flexion in group A was 130 degrees (SD 29 degrees) compared with 137 degrees (SD 12 degrees ) in group B. The average Hospital for Special Surgery Knee Score was 92 (SD 17) in group A and 96 (SD 12) in group B. Three @entity1 were dissatisfied. All had radiographic signs of @entity571 . In contrast, 9 of 26 @entity1 who were satisfied with their result had radiographic signs of @entity571 . A postoperative difference in the Insall-Salvati ratio did not correlate with the development of @entity571 . Both augmentation techniques are reliable and demostrate good intermediate to long-term results. The outcome did not show significant differences. To avoid reoperation for removal of the cerclage wire, a @entity1480 cord can be used. The @entity281 rate seems to be higher in the @entity1480 group. A larger prospective study group is necessary to determine whether this phenomenon can be reproduced.

Rupture of the patellar tendon: a review of 68 cases and a retrospective study of 29 XXXX comparing two methods of augmentation.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity571 :: ('MESH:D010003', 'Disease') :: ['retropatellar osteoarthritis', 'osteoarthritis'] @entity281 :: ('MESH:D007239', 'Disease') :: ['infection'] @entity397 :: ('MESH:D012421', 'Disease') :: ['ruptures'] @entity258 :: ('MESH:D009800', 'Disease') :: ['low-velocity injury'] @entity130 :: ('MESH:D014947', 'Disease') :: ['prior injury', 'injuries', 'traumas', 'trauma'] @entity1480 :: ('MESH:C563184', 'Disease') :: ['PDS']
@entity397 :: (MESH:D012421,Disease) :: ['ruptures']
