TL;DR: Normal function was restored by shortening of the biceps tendon and aponeurosis 8 months after the accident.
Abstract: Traumatic rupture of the lacertus fibrosus in the biceps aponeurosis and elongation of a normal-appearing biceps tendon caused weakening in elbow flexion and forearm supination. Normal function was restored by shortening of the biceps tendon and aponeurosis 8 months after the accident.
TL;DR: A 47-year-old guitar player presented with inability to use his right hand because of progressive weakness and numbness and examination suggested compression neuropathy of the median nerve at the elbow.
Abstract: A 47-year-old guitar player presented with inability to use his right hand because of progressive weakness and numbness. Examination suggested compression neuropathy of the median nerve at the elbow. Exploration of the median nerve revealed compression by a tight aponeurosis of the biceps tendon. Release resulted in prompt recovery of function.
TL;DR: 7 consecutive cases of acute median nerve compression in the antecubital fossa resulted from an extremely forceful injury to the elbow, with evidence of partial rupture of the myotendinous junction of the biceps brachii creating increased tension across the median nerve by a tethered lacertus fibrosus.
TL;DR: Three patients exhibiting acute onset of proximal forearm pain and muscle weakness are reviewed and surgical exploration revealed compression of the median nerve at the level of the lacertus fibrosus.
Abstract: Three patients exhibiting acute onset of proximal forearm pain and muscle weakness are reviewed. After nonoperative therapy failed, surgical exploration revealed compression of the median nerve at the level of the lacertus fibrosus. All three patients experienced complete recovery after release of the lacertus fibrosus.
TL;DR: Repairs of the lacertus fibrosus as an adjunct to distal biceps tendon repair strengthens the repair in the laboratory setting, and clinical testing is needed to verify that this increased strength improves clinical results.
Abstract: Background: To date, repair of the lacertus in distal biceps tendon ruptures, recommended by some, has not been evaluated. The goal of these biomechanical experiments was to evaluate the degree to which its repair increases the strength of a distal biceps tendon repair.Hypothesis: An intact or repaired lacertus fibrosus will increase the strength of a distal biceps tendon repair.Study Design: Controlled laboratory study.Methods: Four matched pairs of fresh-frozen human cadaveric upper extremities were prepared by isolating the lacertus fibrosus and the distal biceps tendon. The extremity was placed in a custom-built rig with the distal biceps brachii clamped and affixed to a stepper motor assembly. The distal biceps tendon was sharply removed directly from the radial tuberosity and repaired through a bony tunnel in all specimens. One side of each pair was randomized to also receive repair of the lacertus. The specimens were pulled at a constant rate until failure.Results: The mean failure strength, define...