scholarly journals Bilateral'naya kompressiya sredinnogo nerva aponevrozom dvuglavoj myshcy plecha na urovne loktevogo sustava (Lacertus-sindrom)

2021 ◽  
Author(s):  
И. М. Ишихов ◽  
К. В. Коломиец ◽  
Ф. М. Гамидов ◽  
Е. В. Ганцгорн
Keyword(s):  
Lacertus Fibrosus

Kompressiya sredinnogo nerva aponevrozom dvuglavoj myshcy plecha (lacertus fibrosus) na urovne loktevogo sustava, ili Lacertus-sindrom, — redkaya patologiya, kotoruyu slozhno obnaruzhit' s pomoshch'yu instrumental'nyh metodov issledovaniya. V literature otsutstvuyut svedeniya o raspostranennosti dannogo sindroma, chetkie algoritmy ego diagnostiki i lecheniya, chto zatrudnyaet postanovku diagnoza i naznachenie effektivnogo lecheniya. Lacertussindrom soprovozhdaetsya polozhitel'nym scratch collapse test i trebuet differencial'noj diagnostiki s sindromom karpal'nogo kanala. Predstavlen klinicheskij sluchaj pacienta s bilateral'noj kompressiej sredinnogo nerva aponevrozom dvuglavoj myshcy plecha na urovne loktevogo sustava, izlozheny kriterii diagnostiki Lacertus-sindroma, sposob operativnogo lecheniya. Rezul'taty ispol'zovannoj hirurgicheskoj taktiki: ischeznovenie boli, parestezij i onemeniya v zone innervacii sredinnogo nerva, vosstanovlenie sily myshc do urovnya M5 po SHkale ocenki myshechnoj sily MRC — svidetel'stvuyut o vysokoj effektivnosti predlagaemogo hirurgicheskogo lecheniya Lacertus-sindroma.

An intact lacertus fibrosus improves strength after reinsertion of the distal biceps tendon

2019 ◽  
Vol 28 (7) ◽  
pp. 2279-2284
Author(s):  
Kaare Sourin Midtgaard ◽  
Hanna Björnsson Hallgren ◽  
Karin Frånlund ◽  
Fredrik Gidmark ◽  
Endre Søreide ◽  
...  
Keyword(s):  
Biceps Tendon ◽  
Distal Biceps Tendon ◽  
Distal Biceps ◽  
Lacertus Fibrosus

scholarly journals Síndrome del lacertus fibrosus

2021 ◽  
Vol 1 (1) ◽  
pp. 25-34
Author(s):  
Roberto Meléndez ◽  
Gonzalo Martínez ◽  
Natalia Salamanca
Keyword(s):  
Biceps Brachii ◽  
Lacertus Fibrosus ◽  
Las Mujeres ◽  
Sobre Todo

El lacertus fibrosus del bíceps o expansión aponeurótica del bíceps es una estructura a la que suele prestársele poca atención frente a otras unidades miotendinosas de destacada importancia como el bíceps brachii o el tríceps. Por esta razón, en general es escaso el conocimiento que se tiene de ella respecto a su anatomía, biomecánica, fisiología y, sobre todo, patología; en las descripciones del síndrome del pronador redondo se le menciona de manera incidental. El presente es un estudio descriptivo observacional de tipo retrospectivo hecho con el propósito de revisar la anatomía del lacertus fibrosus, plantear aspectos de su biomecánica y presentar la revisión de una serie de 29 casos identificados a partir de 4 100 historias clínicas realizadas entre el 13 de enero de 2015 y el 12 de febrero de 2020. En la revisión de la literatura hecha para la presente investigación se encontró que dicha patología predominó en las mujeres y en los mayores de 56 años, siendo el principal motivo de consulta el dolor en la cara antero-medial del brazo distal y del codo. Además, se halló que su presentación clínica con frecuencia se acompañaba de los síndromes del pronador redondo y del interóseo posterior.

Compression du nerf médian au coude par le lacertus fibrosus : à propos de 34 cas

2019 ◽  
Vol 38 (6) ◽  
pp. 407
Author(s):  
A. Hamouya ◽  
G. Meyer Zu Reckendorf ◽  
J.L. Roux
Keyword(s):  
Lacertus Fibrosus ◽  
Nerf Médian

Biceps, Brachialis, and Triceps

2021 ◽  
Vol 25 (04) ◽  
pp. 566-573
Author(s):  
Thibault Willaume ◽  
Guillaume Bierry
Keyword(s):  
Tendon Injuries ◽  
Distal Biceps ◽  
Muscle Stretching ◽  
Elbow Luxation ◽  
Lacertus Fibrosus ◽  
Acute Event ◽  
Forearm Flexor ◽  
Over Time ◽  
Small Flake

AbstractTendon injuries at the elbow affect mostly the distal biceps and can progressively degenerate over time or rupture in an acute event. The degree of retraction may depend on the integrity of the lacertus fibrosus, a fibrous expansion that merges with the forearm flexor fascia. Biceps disorders are frequently associated with fluid or synovitis of the adjacent bicipital bursa; primary bursal disorders (primary inflammatory synovitis) can also be observed. Distal triceps is less frequently injured than the distal biceps, and tears usually manifest as distal ruptures with avulsion of a small flake of bone from the tip of the olecranon. Brachialis injuries are uncommon and the consequence of sudden muscle stretching during forced elbow hyperextension, as in posterior elbow luxation.

Lacertus Fibrosus Versus Achilles Allograft Reconstruction for Distal Biceps Tears: A Biomechanical Study

2017 ◽  
Vol 45 (14) ◽  
pp. 3340-3344 ◽  
Author(s):  
Anand M. Murthi ◽  
Miguel A. Ramirez ◽  
Brent G. Parks ◽  
Shannon R. Carpenter
Keyword(s):  
Soft Tissue ◽  
Achilles Tendon ◽  
Biceps Tendon ◽  
Biceps Muscle ◽  
Distal Biceps Tendon ◽  
Distal Biceps ◽  
Lacertus Fibrosus ◽  
Tendon Allograft ◽  
Load To Failure ◽  
Achilles Tendon Allograft

Background: The bicipital aponeurosis, or lacertus fibrosus, can potentially be used as a reconstruction graft in chronic distal biceps tendon tears. Purpose: To evaluate construct stiffness, load to failure, and failure mechanism with lacertus fibrosus versus Achilles allograft for distal biceps tendon reconstruction. Study Design: Controlled laboratory study. Methods: Ten fresh-frozen matched cadaveric pairs of elbows were used. Three centimeters of the distal biceps tendon was resected. Specimens were randomized to the lacertus fibrosus or Achilles tendon group. In one group, the lacertus fibrosus was released from its distal attachment and then tubularized and repaired intraosseously to the radius. In the other group, an Achilles tendon graft was sutured to the biceps muscle and repaired to the ulna. The prepared radii were rigidly mounted at a 45° angle on a load frame. The proximal biceps muscle was secured in a custom-fabricated cryogenic grip. Displacement was measured using a differential variable reluctance transducer mounted at the radius–soft tissue junction and in the muscle- or muscle allograft–tissue junction proximal to the repair. Specimens were loaded at 20 mm/min until failure, defined as a 3-mm displacement at the radius–soft tissue junction. Results: No significant difference was found in mean load to failure between the lacertus fibrosus and Achilles tendon group (mean ± SD, 20.2 ± 5.5 N vs 16.89 ± 4.54 N; P = .18). Stiffness also did not differ significantly between the lacertus fibrosus and Achilles tendon group (12.3 ± 7.1 kPa vs 10.5 ± 5.7 kPa; P = .34). The primary mode of failure in the lacertus fibrosus group was suture pullout from the tissue at the musculotendinous junction (7 of 10). In the Achilles group, failures were observed at the muscle-allograft interface (3) and the allograft-bone (radial tuberosity) interface (3), and 3 suture failures were observed. The button fixation did not fail in any specimens. Conclusion: The mean stiffness and load-to-failure values were not significantly different between a lacertus fibrosus construct and Achilles tendon allograft. Clinical Relevance: Use of the lacertus fibrosus may be a potential alternative to Achilles tendon allograft reconstruction of chronic distal biceps tears when primary repair is not possible.

scholarly journals Distal biceps hook test – Sensitivity in acute and chronic tears and ability to predict the need for graft reconstruction

2019 ◽  
Vol 12 (4) ◽  
pp. 294-298
Author(s):  
Toni Luokkala ◽  
Sijin K Siddharthan ◽  
Teemu V Karjalainen ◽  
Adam C Watts
Keyword(s):  
Biceps Tendon ◽  
Distal Biceps Tendon ◽  
Distal Biceps ◽  
Lacertus Fibrosus ◽  
Tendon Allograft ◽  
Partial Tears ◽  
Initial Injury ◽  
Tendon Tears ◽  
Achilles Tendon Allograft ◽  
Graft Reconstruction

Background The aim of this study was to assess the sensitivity of distal biceps hook test – O’Driscoll hook test – in a retrospective series of acute and chronic distal biceps tendon tears and investigate the ability of the test to predict the need for graft reconstruction. Methods We retrospectively evaluated 234 consecutive distal biceps tendon tears operated in a single centre. The result of O’Driscoll hook test and perioperative findings of distal biceps were documented in standard fashion. Results The perioperative and O’Driscoll hook test data were available in 202 cases. The sensitivity for the distal biceps hook test was 78% in all tears and 83% in complete tears. The sensitivity was significantly lower in partial tears (30%) and in cases where lacertus fibrosus was found to be intact (45 %). When O’Driscoll hook test was positive and the delay from initial injury to operative intervention was eight weeks or more, there was over 75% probability of achilles tendon allograft reconstruction. When O’Driscoll hook test was negative, the probability of reconstruction even after 12 weeks’ delay was only 20%. Discussion O’Driscoll hook test is useful when establishing distal biceps tendon tear diagnosis, but a negative test does not exclude rupture. In delayed cases, a positive test may predict the need for reconstruction.

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