Dynamic skin tension in the forearm: effects of pronation and supination

Burn Injury Cutaneous Functional Units: Allocating Occupational Therapy Resources and Influencing Practice

Burn injury severity is currently determined by estimating the total body surface area (TBSA) burned, but this method fails to capture the severity of subsequent functional consequences. Alternatively, cutaneous functional units (CFUs)--skin segments that accommodate for movement and commonly become contracted--can be used to more accurately estimate burn severity based on functional consequences. Bilateral hands account for 81.3% of the body's CFUs, though only account for 5% of TBSA. However, hand burn survivors can have worse physical outcomes (ie, contractures, deformities) after burn injury, leading to subsequent loss of function, global occupational participation deficits, and poor psychosocial outcomes. This study, conducted at a verified American Burn Association burn center, explores how CFU involvement among adult burn survivors with uni and bilateral hand and upper extremity burns influenced occupational therapy practice in regards to time spent completing scar and soft tissue elongation techniques from the elbow to the digit tips per patient. The data showed, on average, burn occupational therapists require 0.8 minutes per CFU for an average total of 38.7 (SD = 29.5) minutes each session to complete scar and soft tissue elongation techniques to the upper extremities. The results of this study can be used to educate burn centers on the clinical utility of CFUs, burn occupational therapists regarding best-practice in terms of utilization of therapist time and resources, as well as support the justification for increasing occupational therapy services for patients with upper extremity and hand burns, and increasing staffing to meet patient need.

Minimal Scar Formation After Orthopaedic Skin Incisions Along Main Folding Lines

BACKGROUND

Patients, particularly those who are young, often develop noticeable orthopaedic scars. In order to achieve minimal scarring, surgeons should attempt to place incisions in skinfolds or skin creases.

METHODS

Optimal incision lines can be determined from the direction of stretch marks (striae distensae), which develop perpendicular to lines of tension or main folding lines. A composite diagram of photographs of 213 individuals with striae distensae was created and compared with 276 images of incisions and scars derived from the Internet.

RESULTS

Classically described Langer cleavage lines often run counter to real tension lines and poorly predict the optimal direction for skin incisions.

CONCLUSIONS

Whenever possible, main folding lines should be utilized as a guide in planning surgical incisions for young patients as well as for correction of problem scars.

Current Concepts Burn Rehabilitation, Part I: Care During Hospitalization

This article summarizes current interventions for several of the most common challenges faced by patients during their rehabilitation from burn injury. These include preservation of range of motion through scar contracture management, and achieving maximal independence through exercise, and training in activities of daily living.

Functional anatomy of the distal radioulnar joint in health and disease

The distal radioulnar joint (DRUJ) is critical to the function of the forearm as a mechanical unit. This paper is concerned with the concepts and observations that have changed understanding of the function of the DRUJ, notably with respect to the biomechanics of this joint. The DRUJ has been shown to be important in acting to distribute load and removal of the ulna head leads to the biomechanical equivalent of a one-bone forearm. The soft tissues with topographical relations to the distal forearm and DRUJ have also been investigated in our experimental series with findings including the description of a clinical disorder termed subluxation-related ulna neuropathy syndrome.

The functional anatomy of forearm rotation

The elbow, forearm and wrist act as a unified structure to provide a stable, strong and highly mobile strut for positioning the hand in space and for conducting load-bearing tasks. An understanding of the relevant anatomy and biomechanics is important for the surgeon assessing and treating disorders of forearm function. This paper is concerned with illuminating the principles and concepts governing forearm rotation and load-bearing functions.