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Rationale of the study is to evaluate through a prospective randomized controlled study if a modified direct superior posterolateral approach (sperimental approach) to the hip articulation which entirely spares i.e. avoids the sacrifice of the fascia lata might elicit a better outcome in terms of gait, balance, strengths recovery, clinical performance, patient reported outcome measurement (Short Form-12(SF-12); Hip disability and Osteoarthritis Outcome Score (HOOS)) and overall recovery time in patients undergoing TotalHipArthroplasty with the aid of dedicated, modified instrumentation in order to properly access this modified route.
The investigators expect an improvement on selected gait analysis parameters in sperimental approach in order of 2% of range of motion (ROM) recorded 1 month after surgery. Based on this assumption sample size calculation will be conducted.
Rationale of the study is to evaluate through a prospective randomized controlled study if a modified direct superior approach (experimental approach) to the hip articulation which entirely spares i.e. avoids the sacrifice of the fascia lata (posterolateral approach) might elicit a better outcome in terms of gait, balance,strenghts recovery, clinical performance, patient reported outcome measurements and overall recovery time in patients undergoing TotalHipArthroplasty with the aid of dedicated, modified instrumentation in order to properly access this modified route.Two patients groups will randomly be allocated in one of the two group with a computer generated 1:1 randomization table.Total number of subjects participating in the study:50.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| direct superior approach | Experimental | Direct superior approach 25 patients |
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| posterolateral approach | Active Comparator | posterolateral approach 25 patients |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Direct Superior Approach | Procedure | GROUP II :Patients positioned in lateral decubitus.landmark for incision is the apex of the greater trochanter,and skin, subcutaneous tissue except fascia are incised accordingly. Fibers of gluteus will be separated and not incised.posterior capsulotomy is performed,;femur is dislocated and neck osteotomy carried out, followed by preparation of femoral canal with progressive broach. Acetabulum is prepared with burs of increasing diameter, and acetabular cup is impacted. A polyethylene insert and a femoral rasp are subsequently introduced.All remaining definitive implants can be positioned. |
| Measure | Description | Time Frame |
|---|---|---|
| evaluate spatiotemporal variables in meters among two different access routes, one a traditional posterolateral mini approach and the other a modified posterolateral superior approach fascia lata sparing | spatiotemporal variables: step length (meters), stride length (meters). | Change from Baseline spatiotemporal variables in meters at 3 months |
| evaluate spatiotemporal variables in percentage among two different access routes, one a traditional posterolateral mini approach and the other a modified posterolateral superior approach fascia lata sparing | Spatiotemporal variables: stance phase (percentage), swing phase (percentage) | Change from Baseline spatiotemporal variables in percentage at 3 months |
| evaluate kinematic parameters in degrees among two different access routes, one a traditional posterolateral mini approach and the other a modified posterolateral superior approach fascia lata sparing | Kinematic parameters (in degrees): hip flexion-extension ROM, hip abduction-adduction ROM, Hip rotation ROM, Hip Obliquity ROM. | Change from Baseline Kinematic parameters in degrees at 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| evaluation of instability with BEStest | BESTest (Balance Evaluation System Test) that evaluate the risk of fall . Each patient will be asked to wear a belt and two gloves containing the magnetic sensors and to follow the OAK device instruction.The portable device detects, on real time, the position and the orientation of each sensor. It yields a point-score from 0 to 24 and it has been shown that the relative optimal cut-off point was a 16 point-score out of 24: a point score between 17 and 24 classifies a subject as low risk who would otherwise be classified as being at medium/high risk (the duration will be approximately 10 minutes) |
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Inclusion Criteria:- Patients affected by:
Exclusion Criteria:-Revision procedures where other treatments or devices have failed
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| Name | Affiliation | Role |
|---|---|---|
| Michele Ulivi | IRCCS Istituto Ortopedico GaleazziMilano | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| IRCCS Istituto Ortopedico Galeazzi | Milan | 20161 | Italy | |||
| Istituto Ortopedico Galeazzi |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 33410360 | Derived | Ulivi M, Orlandini L, Vitale JA, Meroni V, Prandoni L, Mangiavini L, Rossi N, Peretti GM. Direct superior approach versus posterolateral approach in total hip arthroplasty: a randomized controlled trial on early outcomes on gait, risk of fall, clinical and self-reported measurements. Acta Orthop. 2021 Jun;92(3):274-279. doi: 10.1080/17453674.2020.1865633. Epub 2021 Jan 7. |
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| ID | Term |
|---|---|
| D015207 | Osteoarthritis, Hip |
| ID | Term |
|---|---|
| D010003 | Osteoarthritis |
| D001168 | Arthritis |
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
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| posterolateral approach | Procedure | GROUP I:patients are positioned in lateral decubitus.Landmark for incision is the apex of the greater trochanter.posterior capsulotomy is performed, femur is dislocated and neck osteotomy carried out, followed by preparation of femoral canal with progressive broach.Acetabulum is prepared with burs of increasing diameter,and acetabular cup is then impacted.All definitive implants can be positioned. |
|
| Change from Baseline BESTest at 3 months |
| Milan |
| 20161 |
| Italy |
| D012216 |
| Rheumatic Diseases |