Non-linear stress-softening of the bacterial cell wall confers cell shape homeostasis.

The bacillus - or rod - is a pervasive cellular morphology among bacteria. Rod-shaped cells elongate without widening by reinforcing their cell wall anisotropically to prevent turgor pressure from inflating cell width. Here, we demonstrate that a constrictive force is also essential for avoiding pressure-driven widening in Gram-positive bacteria.

Editorial Commentary: Various Meniscal Repair Techniques Show Similar Biomechanical and Clinical Outcomes, and Horizontal Suture Orientation Is Best Avoided.

Knee meniscal repair shows favorable outcomes, especially if associated with anterior cruciate ligament reconstruction. However, a favorable clinical outcome does not mean that the meniscus has healed. There is no difference in clinical outcomes between all-inside and inside-out meniscal repair techniques.

Biomechanical Characteristics of All-Suture Meniscal Repair Devices Compared With PEEK-Anchored Devices and Inside-Out Suture for Meniscal Repair: A Porcine Study.

Background: Recently, all-suture, all-inside meniscal repair devices-including devices containing flat sutures or tapes-have been introduced. Similar to those in suture anchors, these modifications may have different performance characteristics than conventional sutures and polyether ether ketone (PEEK)-anchored devices.

Purpose: To compare the biomechanical characteristics of all-suture meniscal repair devices with those of a conventional PEEK-anchored device and an inside-out meniscal suture construct.

Editorial Commentary: Acellular Collagen Matrix Patch Augmentation of Large Rotator Cuff Tear Repair Results in Improved Healing.

Despite a high retear rate, repair of large rotator cuff tendon tear repairs shows good clinical outcomes. Unfortunately, these results often deteriorate with time, and large tears, not to mention progressively symptomatic retears, especially in compromised rotator cuff tissue, remain a problem. The solution could include augmenting repair with a patch such as an acellular collagen matrix.