case_images: PMC6727447_01
case_images: Left gap non-union patella fracture.
case_images: JOCR-9-69-g001.jpg
case_images: PMC6727447_01_JOCR-9-69-g001.jpg
case_images: F1
case_images: Plain radiographs of the left knee demonstrated a 12 cm gap non-union of the left patella (Fig. 1).
case_images: Ring fixator device.
case_images: JOCR-9-69-g002.jpg
case_images: PMC6727447_01_JOCR-9-69-g002.jpg
case_images: F2
case_images: The first stage involved application of skeletal traction on the proximal fragment (Figs. 2 and 3).
case_images: Ring fixator device.
case_images: JOCR-9-69-g003.jpg
case_images: PMC6727447_01_JOCR-9-69-g003.jpg
case_images: F3
case_images: The first stage involved application of skeletal traction on the proximal fragment (Figs. 2 and 3).
case_images: Definitive fixation. (a) anterior-posterior film and (b) lateral film.
case_images: JOCR-9-69-g004.jpg
case_images: PMC6727447_01_JOCR-9-69-g004.jpg
case_images: F4
case_images: Due to the patient's poor bone quality, the decision was made to apply tension wire skeletal traction using a ring fixator device with one wire passing through the bone and a second wire through the quadriceps tendon (Fig. 4). Once adequate mobilization of the proximal patella fragment was achieved, we proceeded to the second stage which involved a conventional tension band wiring to achieve definitive fixation (Fig. 4).