Developmental Dysplasia of the Hip
Tracking Pixel
presents
Wheeless' Textbook of Orthopaedics

Hip Spica Cast



- See: Pediatric Femoral Frx Menu:

- Discussioon:
    - contraindications:
            - unacceptable shortening or angulation;
            - open fractures;
            - thoracic or intra-abdominal trauma;
            - large or obese children (inability for parents to care for child);
    - position of spica:
            - place affected thigh in 10 deg of abduction or in neutral position w/ opposite hip in moderate abduction to facilitate perineal hygiene;
            - to decrease muscle forces & to minimize amount of shortening, place the lower extremity in the relaxed position;
                    - w/ hip flexion, abduction, external rotation & knee flexion;
                    - common mistake is to place the fractured thigh in marked abduction w/ resulting lateral bowing due to the pull of strong adductors;
                    - consider placing the limb in the correct position before application of spica;
            - proximal 1/3 frx:
                    - hip flexion   :     45 deg
                    - hip abduction:   30 deg
                    - ext rotation:       20 deg
            - mid shaft fractures:
                    - hip flexion:         30 deg
                    - hip abduction:   20 deg
                    - ext rotation:       15 deg
            - distal 1/3 frx:
                    - hip flexion:         20 deg
                    - hip abduction:   20 deg
                    - ext rotation:       15 deg


- Technique:
    - technique pearls: padding:
            - place a folded towel on the anterior thorax and abdomen and apply all padding and casting material over this towel;
                    - following cast application the towel is removed;
                    - this will create space between the cast and the thorax/abdomen and will avoid cast tightness and difficult w/ breathing;
                    - using this technique, it is not necessary to window the abdomen of the cast;
            - its useful to place 2 layers of body stockingette over the patient's torso to ensure that the cast padding can be pulled
                    up over the edges of the cast;
            - gortex soft wrap is preferable to cotton wrap (gortex can be cleaned if it gets soiled);
            - soft wrap (preferably Gortex) is placed, w/ care to evenly spread the cotton across the back and buttochs (including sacrum);
            - a thick belt of felt is taped across the chest, just below the nipple line;
            - a second felt belt is fashioned to cover the sacrum, PSIS, and ASIS;
    - reduction:
            - prior to cast application, use flouro to help determine the optimal position for reduction;
            - distal femoral traction pin is inserted if fracture needs to be brought out to length;
            - apply the cast, but apply minimal cast material around the injured thigh;
            - once the cast is hard, bring in flouro and determine if the reduction is adequate;
            - if the reduction is not adequate, then circumferentially cut the cast at the level of the frx;
            - then re-reduce the fracture under flouroscopic control;
            - once the reduction is adequate, have an assistant quickly apply more casting material while the thigh is held in the reduced position;
    - cast re-enforcement:
            - apply a "broom stick" between the thighs and apply cast material over this, inorder to strengthen the cast and prevent cast
                    breakdown at the hip joint;        

- Cast Care:
    - goretex liner allows the child and the cast to be washed;
    - a panty shield napkin can be applied to the perineum to prevent soiling of the cast;
    - child is seen every 2 weeks for evidence of skin break down;










Improved treatment of femoral shaft fractures in children. The "pontoon" 90-90 spica cast.

Long-term results in the treatment of femoral-shaft fractures in young children by immediate spica immobilization.

Immediate spica cast system for femoral shaft fractures in infants and children.





Original Text by Clifford R. Wheeless, III, MD.