Aftercare following suture anchor fixation
Active knee function requires an intact knee extensor mechanism, a mobile patella, a well-preserved patello-femoral joint and muscle strength.
As suture anchors are only used in sagittal patellar fractures, and this fracture has now been stabelized with the anchor, the knee may be moved freely without protection postoperatively.
Early controlled range of motion exercises are combined with static quadriceps strengthening exercises. The progressive increase in loading of the patello-femoral joint depends on many factors and requires planned individual programs, designed by the surgeon and physical therapists.
Patellar fixation is generally quite stable. Early progressive, active mobilization is beneficial after surgery. Static isometric quadriceps exercises should be started on postoperative day 1.
Afterwards, special emphasis should be given on active knee and hip movement.
A removable knee splint is applied and worn until skin healing at 2 weeks and good quadriceps control is regained. Full weight bearing may be performed with a straight knee, using crutches or a walker, from postoperative day 1.
X-rays should be taken at 2, 6 and 12 weeks. A longer period may be required if fracture healing is delayed.