Outcomes of operatively treated acute knee dislocations

Abstract

Knee dislocation is a complex and rare injury often presenting in the context of high velocity trauma. The aim of this study is to establish the subjective outcomes of surgically treated knee dislocations. A total of 20 knees dislocations treated by open repair were reviewed. Their progress and outcomes were assessed by using a modified Lysholm score questionnaire. Data was obtained on patient demographics, details of injury, investigation, treatment, rehabilitation, 24 months objective outcome and subjective outcomes. Six patients had a vascular deficit and six had neurological deficits. The median range of motion was 0 degrees -100 degrees . Patients with an initially lower pre-injury level of function were able to return an activity level comparable to their pre-injury status. 22% of competitive athletes retuned to competitive sports. 38% of patients undertaking heavy activity returned to comparable pre-injury level of activity and 67% of patients undertaking moderate level of activity before injury returned to a comparable level after repair. 68% regularly had problems running, 70% problem squatting, 40% swelling and 42% problem with stairs. Most patients however did not have locking of the knee or problems with knees giving way. Patients pain scores decreased over time to an acceptable level. Despite the severity of the injury, majority of patients achieved a satisfactory outcome, although none of the patients reached the same level of function as before the injury. 80% of the patients were satisfied with their outcome. All dissatisfied patients suffered postoperative complications.

Keywords: Knee dislocations; knee instability and patient satisfaction post knee repair.; outcomes of knee dislocations; surgical repair of knee dislocations; traumatic knee dislocations.

Fig. (1)

Level of activity following treatment of knee dislocation in competitive athletes immediately after treatment, 3 months after treatment and currently.

Fig. (2)

Level of activity following treatment of knee dislocation in patients undertaking heavy activity, immediately after treatment, 3 months after treatment and currently.

Fig. (3)

Level of activity following treatment of knee dislocation in patients undertaking moderate activity, immediately after treatment, 3 months after treatment and currently.

Fig. (4)

Patient’s level of pain following knee dislocation.

Fig. (5)

Patient’s level of function following treatment of knee dislocation.

Fig. (6)

Patient level of satisfaction.