Orthopedics Commons^™

Muscle Contraction Duration And Fibre Recruitment Influence Blood Flow And Vo2 Independent Of Contractile Work During Steady-State Exercise In Humans, Jennifer C. Richards, Anne R. Crecelius, Brett S. Kirby, Dennis G. Larson, Frank A. Dinenno

Anne R. Crecelius

We tested the hypothesis that, among conditions of matched contractile work, shorter contraction durations and greater muscle fibre recruitment result in augmented skeletal muscle blood flow and oxygen consumption (O2) during steady-state exercise in humans. To do so, we measured forearm blood flow (FBF; Doppler ultrasound) during 4 minutes of rhythmic handgrip exercise in 24 healthy young adults and calculated forearm O2 via blood samples obtained from a catheter placed in retrograde fashion into a deep vein draining the forearm muscle. In Protocol 1 (n = 11), subjects performed rhythmic isometric handgrip exercise at mild and moderate intensities under conditions …

Screening And Surveillance Ct Abdomen/Pelvis For Metastases In Patients With Soft-Tissue Sarcoma Of The Extremity, M. J. Thompson, J. Ross, G. Domson, W. Foster

Orthopaedic Surgery Publications

Objectives The clinical utility of routine cross sectional imaging of the abdomen and pelvis in the screening and surveillance of patients with primary soft-tissue sarcoma of the extremities for metastatic disease is controversial, based on its questionable yield paired with concerns regarding the risks of radiation exposure, cost, and morbidity resulting from false positive findings.

Methods Through retrospective review of 140 patients of all ages (mean 53 years; 2 to 88) diagnosed with soft-tissue sarcoma of the extremity with a mean follow-up of 33 months (0 to 291), we sought to determine the overall incidence of isolated abdominopelvic metastases, their …

Front Matter, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Faculty And Mid-Level Providers, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Fellows, Chiefs And Residents, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Physical Therapy Faculty, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Division Of Research, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Letter From The Chair, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Letter From The Co-Editors, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Letter From The Chief Of The Division Of Physical Therapy, Unm Department Of Orthopaedic Surgery

UNM Orthopaedic Research Journal

No abstract provided.

Severely Deformed Extraarticular Fractures Of The Scapula: A Review, Sean B. Kuehn

UNM Orthopaedic Research Journal

Nonoperative treatment of severely deformed fractures of the scapula was historically common. However, the findings of newer research have challenged the notion that conservatively managing these fractures results in the most successful outcomes. In an attempt to possibly reveal important indicators for surgical treatment, I reviewed studies on scapula fractures involving scapular anatomy; associated injuries; technological advances that have helped with fracture evaluation; and treatment outcomes between nonsurgical and surgical methods. Although a universally accepted classification scheme of scapula fractures does not exist, use of 3D reconstruction with computed tomography can help define the level and category of fracture deformity. …

Learning The Laprade Technique For Reconstruction Of The Posterolateral Corner Of The Knee, Dustin L. Richter

UNM Orthopaedic Research Journal

No abstract provided.

Treatment Of Full Circumferential Segmental Bone Loss Of The Tibia Resulting From Acute Traumatic Injuries And Complications: A Review, Gregory C. Strohmeyer

UNM Orthopaedic Research Journal

Full circumferential segmental bone loss of the tibia presents a challenge to orthopaedic surgeons. These open fractures often involve extensive soft-tissue damage, which can contribute to poor long-term outcomes even if the tibia is successfully reconstructed. Although amputation was historically used to treat full circumferential segmental bone loss of the tibia because of the severity of the injury, the development of new reconstruction procedures has provided the option of limb salvage techniques. I reviewed studies on treatment of traumatic tibia bone loss, focusing particularly on full circumferential bone loss of greater than 3 cm. Treatment options included amputation, allograft replacement, …

Open Reduction And Internal Fixation For Treatment Of Proximal Humerus Fractures: A Review, Heather K. Woodin

UNM Orthopaedic Research Journal

Fractures of the proximal humerus are common in older patients, and the incidence of these fractures in the United States is expected to notably increase with the aging population. Nonoperative procedures have been preferred in elderly patients with stable fracture patterns to avoid complications associated with osteoporotic bone. However, more complex and unstable fracture patterns often necessitate operative techniques to allow for more anatomical healing. Although proximal humerus fractures have been thoroughly examined, systemized, and studied, no clear method to choosing an appropriate surgical treatment or candidate has been accepted. I reviewed the role of the following factors on successful …

Survey Of Current Articles Published On Total Ankle Arthroplasty And Ankle Fusion, Tony G. Pedri, Richard A. Miller

UNM Orthopaedic Research Journal

In the United States, ankle fusion is more commonly performed than total ankle arthroplasty (TAA) for treatment of degenerative joint disease of the ankle. However, recent advances in implant design and technique have led to a renewed interest in research on TAA. To shed light on current research trends and limited data rather than examine the merits between both methods, we performed a PubMed search of studies on TAA and ankle fusion between January 1, 2009, and January 1, 2015, published in both the American edition of the Journal of Bone and Joint Surgery (JBJS) and Foot & Ankle International …

The Pediatric Orthopaedic Trauma Season: Does It Exist?, Ava A. Boswell, Seth B. Mccord, Cole L. Paffett, Anthony Kallur

UNM Orthopaedic Research Journal

Background: It remains unclear whether pediatric trauma, including fracture, occurs more frequently at a certain time of the year. We developed a database based on the University of New Mexico orthopaedics consult log (OCL) with the aim of determining whether pediatric fractures have a seasonal predilection.

Methods: The OCL for 2009 and 2010, representing a total of 2385 patient visits, was reviewed, and data on patients who were 17 years of age or younger who were treated for trauma were collected. The months and seasons of the year in which the trauma occurred were recorded.

Results: The OCL for 2009 …

Motion-Tracking Drill System Using A Haptic Device For Evaluating And Training Motor Skills Of Orthopaedic Resident Physicians Outside The Operating Room: A Pilot Study, Ashkan Pourkand, Christina Salas, Deana M. Mercer, David I. Grow

UNM Orthopaedic Research Journal

Background: Although experience within the operating room can help surgeons learn simple bone-drilling techniques, outside training may be better suited for complex procedures. We adapted a rotary handpiece with dual trigger and drilling attachments to a haptic device to train and evaluate motor skills of orthopaedic resident physicians outside of the operating room.

Methods: A total of 7 participants with varying levels of skill in orthopaedic surgery were asked to perform a task three times: drill a hole (at 45° from the normal angle) through both cortices of a synthetic diaphysis of a distal radius. Acceleration and acoustic data were …

Removal Of Partly Threaded Cannulated Screws After Treatment Of Slipped Capital Femoral Epiphysis: A Pilot Study, Nathan T. Morrell, Ian A. Power, Dukens Labaze, Elizabeth A. Szalay

UNM Orthopaedic Research Journal

Background: Partly threaded cannulated screws (PTCS) are currently recommended for management of slipped capital femoral epiphysis (SCFE), but no advantage of these screws over fully threaded cannulated screws (FTCS) has been demonstrated. We investigated whether PTCS are more difficult to remove than FTCS.

Methods: The records of 33 patients who underwent implant removal after operative treatment of SCFE were reviewed, and the following data were collected: age and sex of the patient, type of screw used (partly or fully threaded), length of removal operation, and any comments on the difficulty of screw removal.

Results: Sixty-one percent of operative reports for …

Third Extensor Compartment Disruption And The Biomechanics Of Thumb Extension, Christina Salas, Drew K. Newhoff, Zainab Cheema, Allison A. Richards, Deana M. Mercer, Amanda K. Medoro, Ahmed M. Afifi, Moheb S. Moneim, John M. Veitch

UNM Orthopaedic Research Journal

Background: Procedures involving release of the third dorsal wrist compartment have been thought to transpose the extensor pollicis longus (EPL) tendon from its anatomical position. Few studies, however, have reported on the effects this might have on function and mechanics of the thumb. We analyzed the impacts of intact extensor retinaculum, release of the third dorsal compartment, and removal of Lister’s tubercle on thumb extension.

Methods: A total of 15 fresh-frozen cadaveric upper extremities (eight male, seven female; mean age, 52 years; range, 38-59 years) were used. For each specimen, three phases of testing were analyzed: the extensor retinaculum was …

Nonunion After Hybrid Plating With Locking And Nonlocking Screws In Radius And Ulna Shaft Fractures: Report Of Two Cases, Zainab Cheema, Nathan E. Huff, Deana M. Mercer

UNM Orthopaedic Research Journal

Conventional compression plating has been found effective in treating forearm diaphyseal fractures, providing stability as well as resistance to axial, torsional, and bending forces. Locked plating has provided stability without frictional force between the bone-plate interface, which may help preserve periosteal blood supply, and is useful in treating metaphyseal, comminuted, and osteoporotic fractures. Hybrid plating has been used in an attempt to combine the strengths of these two techniques; however, in the context of simple forearm diaphyseal fractures with healthy bone, its effectiveness is only theoretical. We describe two patients in whom open reduction and internal fixation with hybrid plating …