Authors of section

Author

Tomas Guerrero

Executive Editor

Amy Kapatkin

General Editor

Noel Moens

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Craniolateral approach combined with a dorsal approach

1. Indications

The craniolateral approach is commonly used to treat proximal femoral fractures. If more exposure is needed, it can be converted into a dorsal approach by performing an osteotomy of the greater trochanter.

In fractures affecting the subtrochanteric area the incision will be extended distally as needed.

For more information please see "Open approach to the femoral shaft".

2. Anatomy

In young growing animals with open growth plates, the vascular supply to the epiphysis is tenuous and every effort should be made to preserve it. In the dog, the vessel of the ligament of the head of the femur does not contribute to the epiphyseal blood supply. The epiphysis entirely relies upon an extraosseous and subsynovial vascular network ascending along the joint capsule.

The angles of anteversion (20-40°) and the angle of inclination (130-145°) of the femoral neck must be preserved during reduction and stabilization of fractures of the proximal femur.

craniolateral approach combined with a dorsal approach

3. Skin incision

A skin incision in made starting at the midpoint between the greater trochanter and dorsal midline, and ending at the level of the proximal third of the femur. The subcutaneous fat and superficial fascia are incised directly under the skin incision.

lag screw and k wire

4. Exposure

The superficial fascia is retracted. The junction between the fascia lata and the biceps muscle is carefully identified by looking at the direction of the fibers.

The deep leaf of the fascia lata is incised proximally between the superficial gluteal and tensor fascia lata, and distally along the cranial border of the biceps femoris.

If muscle fibers are encountered, the incision should be directed more cranially.

craniolateral approach combined with a dorsal approach

The superficial and middle gluteal muscles are dorsally retracted. The tendon of the deep gluteal muscle is identified, elevated from the joint capsule, and a partial tenotomy is performed close to its attachment to the greater trochanter if necessary.

The joint capsule, if not lacerated, is opened along the long axis of the femoral neck.

craniolateral approach combined with a dorsal approach

If more exposure is needed, a dorsal approach can be performed: the superficial gluteal muscle is transected near its insertion on the third trochanter, and a trochanteric osteotomy is performed with an oscillating saw, a Gigli wire or an osteotome.

Note: Care is taken to avoid damaging the sciatic nerve. If this approach is used, the partial tenotomy of the deep gluteal is not done because it is being removed with the greater trochanter.

craniolateral approach combined with a dorsal approach

5. Closure

Absorbable suture material is used. The joint capsule is closed using interrupted sutures.
A tension pattern is used to reattach the tendon of the deep gluteal muscle; the fasciae are sutured using a simple continuous pattern. Both leafs can be sutured at once. Subcutaneous tissue and skin are routinely closed.

If a dorsal approach via a trochanteric osteotomy was performed, the greater trochanter is reattached using a tension band technique. The superficial; gluteal muscle is reattached to the lesser trochanter with sutures.