Ruptures of the extensor mechanism of the knee joint.

Siwek, C W; Rao, Juluru P.

doi:10.2106/00004623-198163060-00010

Cited by 504 publications

(410 citation statements)

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“…5 The scarcity of bilateral ruptures as well as the symmetry of signs found on clinical examination may obscure the diagnosis. 6 Functional impairment of knees with defective active extension direct the diagnosis which will be confirmed by a profile X-ray of the knees showing patella alta. 7 Ultrasound as well as MRI can be useful to confirm the diagnosis.…”

Section: Discussionmentioning

confidence: 84%

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Neglected bilateral rupture of the patellar tendon: A case report

Cherrad

Louaste

Kasmaoui

et al. 2015

Journal of Clinical Orthopaedics and Trauma

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Section: Discussionmentioning

confidence: 84%

“…This may involve the use of semitendinosus alone 12 or combined with gracilis tendon, 13 fascia lata, 6 or semitendinosus associated with a quadriceps flap. 14 A PDS ® band can also be used so as to strengthen the tendinous reconstruction.…”

Section: [ ( F I G _ 1 ) T D $ F I G ]mentioning

confidence: 99%

Neglected bilateral rupture of the patellar tendon: A case report

Cherrad

Louaste

Kasmaoui

et al. 2015

Journal of Clinical Orthopaedics and Trauma

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“…Rupture of the patellar tendon is a potentially disabling injury typically often treated with surgical repair [11,20,[25][26][27][28]37]. Successful repair can prove challenging owing to the high mechanical loads across the repair and the impaired healing potential of tendons because of their relatively poor blood supply.…”

Section: Introductionmentioning

confidence: 99%

Novel Augmentation Technique for Patellar Tendon Repair Improves Strength and Decreases Gap Formation: A Cadaveric Study

Black

Ricci

Gardner

et al. 2016

Clinical Orthopaedics &Amp; Related Research

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Background Patellar tendon ruptures commonly are repaired using transosseous patellar drill tunnels with modified-Krackow sutures in the patellar tendon. This simple suture technique has been associated with failure rates and poor clinical outcomes in a modest proportion of patients. Failure of this repair technique can result from gap formation during loading or a single catastrophic event. Several augmentation techniques have been described to improve the integrity of the repair, but standardized biomechanical evaluation of repair strength among different techniques is lacking. Questions/purposes The purpose of this study was to describe a novel figure-of-eight suture technique to augment traditional fixation and evaluate its biomechanical performance. We hypothesized that the augmentation technique would (1) reduce gap formation during cyclic loading and (2) increase the maximum load to failure. Methods Ten pairs (two male, eight female) of freshfrozen cadaveric knees free of overt disorders or patellar tendon damage were used (average donor age, 76 years; range, 65-87 years). For each pair, one specimen underwent the standard transosseous tunnel suture repair with a modified-Krackow suture technique and the second underwent the standard repair with our experimental augmentation method. Nine pairs were suitable for testing. Each specimen underwent cyclic loading while continuously measuring gap formation across the repair. At the completion of cyclic loading, load to failure testing was performed. Results A difference in gap formation and mean load to failure was seen in favor of the augmentation technique. At 250 cycles, a 68% increase in gap formation was seen for the control group (control: 5.96 ± 0.86 mm [95% CI, 5.30-6.62 mm]; augmentation: 3.55 ± 0.56 mm [95% CI, 3.12-3.98 mm]; p = 0.02). The mean load to failure was 13% greater in the augmentation group (control: 899.57 ± 96.94 N [95% CI, 825.06-974.09 N]; augmentation: 1030 augmentation: .70 ± 122.41 N [95% CI, 936.61-1124; p = 0.01). Conclusions This biomechanical study showed improved performance of a novel augmentation technique compared with the standard repair, in terms of reduced gap formation during cyclic loading and increased maximum load to failure. Clinical Relevance Decreased gap formation and higher load to failure may improve healing potential and minimize failure risk. This study shows a potential biomechanical advantage of the augmentation technique, providing support for future clinical investigations comparing this

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“…Isolated quadriceps muscle rupture is usually associated with sports-related injury or occupational trauma, especially from direct contusion [1,2]. Among the quadriceps muscle groups, the rectus femoris muscle is the most vulnerable to intrinsic trauma injuries because it crosses two joints (hip and knee joints).…”

Section: Discussionmentioning

confidence: 99%

“…Quadriceps rupture is usually seen in the middle-aged and elderly and is associated with steroid use or underlying medical problems, such as chronic renal failure, hyperparathyroidism, diabetes, gout, and obesity [1]. Rupture of the quadriceps muscle belly is an extremely uncommon type of injury except following direct major trauma or as a sports-related injury [2].…”

Section: Introductionmentioning

confidence: 99%

Quadriceps muscle rupture mimicking lumbar radiculopathy

et al. 2012

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Study design Case report. Objective To report an unusual case of vastus lateralis muscle rupture not accompanied by any history of major trauma or the presence of a risk factor in a patient with spinal stenosis. Summary of background data Isolated vastus lateralis muscle rupture without an obvious cause is very rare. Localized pain and claudication are the most common symptoms and can be misdiagnosed as lumbar radiculopathy. Methods A 70-year-old patient presented with right lower extremity and back pain, diagnosed as spinal stenosis. He was initially treated with caudal epidural block and transforaminal epidural block, which resulted in nearly complete relief of his symptoms. However, he subsequently experienced a pain that was no longer responsive to treatment. The ultrasonographic exam revealed a partial tear of the right vastus lateralis muscle. Result Injection of local anesthetics relieved the patient's symptoms. At 1-month follow-up, he remained pain-free. Conclusions In patients with lower back and leg pain, physicians should consider non-spinal conditions that can cause signs and symptoms mimicking lumbar radiculopathy.

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Ruptures of the extensor mechanism of the knee joint.

Cited by 504 publications

References 0 publications

Neglected bilateral rupture of the patellar tendon: A case report

Neglected bilateral rupture of the patellar tendon: A case report

Novel Augmentation Technique for Patellar Tendon Repair Improves Strength and Decreases Gap Formation: A Cadaveric Study

Quadriceps muscle rupture mimicking lumbar radiculopathy

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