Thread Delamination in 4.5 mm AO Cannulated Screws: A Small Case Series in the Pediatric Trauma Population.

Background: Thread delamination associated with cannulated screws have been reported but likely represent an under-recognized complication in the orthopaedic literature. The purpose of this study is to report the occurrence of repeated hardware failures through thread delamination in the setting of a commonly used orthopaedic cannulated screw implant in a small cohort involving pediatric fracture care at a single academic level I trauma center.

Methods: Between August 2015 and December 2020, 9 cases of hardware failure associated with 4.

Is There Value in Having Radiology Provide a Second Reading in Pediatric Orthopaedic Clinic?

Background: The Joint Commission on Accreditation of Healthcare Organizations specifically mandates the dual interpretation of musculoskeletal radiographs by a radiologist in addition to the orthopaedist in all hospital-based orthopaedic clinics. Previous studies have questioned the utility of this practice. The purpose of this study was to further investigate the clinical significance of having the radiologist provide a second interpretation in a hospital-based pediatric orthopaedic clinic.

The effect of neutron radiation on conventional and highly cross-linked ultrahigh-molecular-weight polyethylene wear.

The effects of a sarcoma therapy dose level neutron radiation on oxidation and wear were compared between conventional (N2\Vac, Stryker Orthopedics, Mahwah, NJ) and highly cross-linked (Crossfire, Stryker Orthopedics) ultrahigh-molecular-weight polyethylene acetabular liners. Liners were exposed to 15 Gy, a typical sarcoma treatment dose. Wear testing was conducted on a hip simulator.

The effect of muscle fatigue on in vivo tibial strains.

Stress fracture is a common musculoskeletal problem affecting athletes and soldiers. Repetitive high bone strains and strain rates are considered to be its etiology. The strain level necessary to cause fatigue failure of bone ex vivo is higher than the strains recorded in humans during vigorous physical activity.

The effect of hyaluronic acid on a rabbit model of full-thickness cartilage repair.

The current study investigated whether hyaluronate exerts a beneficial effect on articular cartilage repair. Nineteen rabbits had bilateral knee arthrotomies, and 2-mm full-thickness cartilage defects were created on each medial femoral condyle. Rabbits received intraarticular injections (0.

Compartment syndrome after acute rupture of the peroneus longus in a high school football player: a case report.

We report the case of a young athlete who sustained an inversion injury to his ankle and presented several hours later with leg pain out of proportion to the injury. Pressure measurements suggested a lateral compartment syndrome and he underwent an emergency fasciotomy. The case is described and recommendations for diagnosis and treatment are given.

Acute synovitis of the knee resulting from intra-articular knee penetration as a complication of flexible intramedullary nailing of pediatric femur fractures: report of two cases.

Management of pediatric femur fractures using flexible intramedullary nail fixation is widely accepted. Few complications have been reported in the literature; these include primarily malunions and nonunions. The authors present two cases of a previously unreported complication-acute synovitis of the knee following intra-articular penetration of the knee joint by migration of a flexible nail.

Pediatric orthopedic trauma: principles in management.

Optimal management of pediatric orthopedic trauma requires understanding the unique characteristics of the immature musculoskeletal system. The principles of pediatric orthopedic trauma management include anticipating future growth and bone remodeling potential, minimizing physeal injury, and aggressive treatment of open fractures and compartment syndromes. This article discusses the fundamentals of the pediatric musculoskeletal system and pediatric orthopedic trauma management in general and as they apply to specific injuries.