FILEX 2012 2 A CCEPTED S TRUCTURAL VARIATIONS A SSESSING H IP POSTURE 1. Low position of ASIS in women often misinterpreted as anterior pelvic tilt 2. Flat back in men with a tall pelvis misinterpreted as posterior tilt when ASIS is higher than belt line Horizontal angle of up to 150 difference between ASIS and PSIS when ASIS and Symphisus Pubis aligned vertically has been found. ‘2 O UT OF 3’ R ULE FOR P ELVIC T ILT 2 OUT OF 3 RULE Because of these potential sources of error in assessing pelvic tilt, you should use the 2 out of 3 rule. You need to find at least 2 of these 3 conditions present before you can say that the pelvic tilt is acquired and not structural An increase or decrease in ‘normal’ depth of lumbar curve An angle greater than 200 between the ASIS and PSIS An increase or decrease in the hip joint angle as long as knees remain neutrally aligned Another option is to return the pelvis to what you consider to be its correct alignment and see if overall alignment improves the affected joints. If incorrect changes occur as a result of the pelvic correction, the problem could be structural and not acquired. L UMBAR CURVE L UMBAR C URVE Anterior curve Normal curve is slight curve not too deep and not too flat An increase in ‘normal’ depth of lumbar curve – ANTERIOR TILT ‘Normal’ depth of lumbar curve ‐ NEUTRAL Decrease in ‘normal’ depth of lumbar curve – POSTERIOR TILT Dr Mark McKean Fitness Research USC 1 FILEX 2012 P ELVIC A NGLE P ELVIC A NGLE ASIS aligned with Pubic bone PSIS greater than 200 above horizontal line of ASIS – ANTERIOR TILT PSIS between 0o‐20o above horizontal line to ASIS PSIS between 0o‐20o above horizontal line of ASIS ‐ NEUTRAL PSIS below horizontal line from ASIS – POSTERIOR TILT H IP J OINTS Hip and knee aligned vertically with trunk 180o at hip joint A NTERIOR T ILT (2 OF 3) H IP J OINT ANGLE Increase in hip joint angle with neutral knees – ANTERIOR TILT Hip and knee aligned vertically with trunk ‐ NEUTRAL Decrease in hip angle through to extension – POSTERIOR TILT P OSTERIOR T ILT (2 OF 3) Increase in normal lumbar curve more than 200 angle between PSIS‐ ASIS Decrease in lumbar curve PSIS is lower than ASIS Flexion of hip joint angle with neutral knees Short hip flexors, long hamstrings, long external oblique, short low back extensors Extension of hip joint angle with neutral knees Short hamstrings, long hip flexors, Dr Mark McKean Fitness Research USC 2 FILEX 2012 T HINGS TO LOOK FOR Typically seen from people with F EMORAL ANTERIOR GLIDE WITH posterior tilt, OR WITHOUT MEDIAL ROTATION hip extended, knees hyperextended, possible medial rotation and poor glutes and weak iliopsoas, T ESTS TO PERFORM When stand on one leg may see medial rotation Short dominant hamstrings over glute max, Short dominant ITB/TFL over iliopsoas Seen sitting with legs crossed. Tests to perform What to look for Supine hip flexion Anterior movement of greater trochanter can be painful with or without excessive medial rotation Prone hip extension Anterior movement of greater trochanter with or without excessive medial rotation (possibly due to dominance of hamstrings in hip extension) C ORRECTING Aim to improve posterior glide of femoral head, correct dominance behaviour of hamstrings and TFL Stretch iliopsoas starting with very light pain free movements and loads Rocking back on hands and knees to stretch posterior capsule Side lying lateral hip rotation with slight abduction to recruit posterior glute medius (knees flexed 90) Stretch lateral hip rotators via medial rotation Dr Mark McKean Fitness Research USC F EMORAL ANTERIOR GLIDE WITH LATERAL ROTATION 3 FILEX 2012 T HINGS TO LOOK FOR Typically see posterior tilt, hips extended, lateral rotation, knees hyperextended. May also see short hamstrings and weak glutes. In supine position will show lateral rotation, tight glutes and weak iliopsoas When stand on one leg will see lateral rotation People may sit cross legged with one foot resting on top of other thigh T ESTS TO PERFORM Tests to perform What to look for Supine hip flexion Anterior movement of greater trochanter with excessive lateral rotation Posterior movement of greater trochanter with excessive lateral rotation (possibly due to dominance of hamstrings in hip extension) Hips rotated laterally Prone hip extension Single leg stance C ORRECTING Prone medial hip rotation from neutral with knees flexed to 90 stretching lateral rotators Strengthen and shorten medial hip rotators Side lying hip abduction with medial rotation and hip flexion Seated hip flexion holds at 120o limiting abduction and lateral hip rotation Forward bends emphasis on hip flexion and glutes only with no lateral rotation. H IP ADDUCTION WITH MEDIAL ROTATION T HINGS TO LOOK FOR More recruitment of medial rotators than lateral rotators Lengthened piriformis may compress sciatic nerve and get referred pain TFL‐ITB over used in abduction/flexion Dominant adductors to abductors Will also have weak lateral rotators, and glute medius and maximus, short ITB‐TFL, and short adductors Generally sleep side lying Dr Mark McKean Fitness Research USC T ESTS TO PERFORM Tests to perform What to look for Side lying external rotation Weakness of lateral rotators Thomas test Short ITB Prone hip extension/trunk hip extension Weak glutes 4 FILEX 2012 CORRECTING Aim to strengthen hip abductor and lateral rotators Prone hip abduction with knee flexed to 90 – moving leg to the side with limited pelvic tilting – this reduce use of flexors Prone glute squeeze and hold isometric contraction Side lying external rotation of hip Strengthening of quads with no medial rotation May require treatment of ITB fascia to reduce recruitment hierarchy H IP EXTENSION WITH KNEE EXTENSION T HINGS TO LOOK FOR Lack of recruitment of glute max in hip extension or quads in knee extension and over use of hamstrings to perform same movements Commonly results in hamstring strains Hamstring contraction can be painful and muscle painful to touch Common in athletes with hypertrophied hamstrings When standing will see hips extended and knees hyperextended Poor knee control in step up/downs with weak glute max and decreased recruitment of quads When returning from forward bend will sway hips forward to use the upper body to extend rather than the glutes T ESTS TO PERFORM Tests to perform What to look for Step ups Knees move backwards instead of body moving forwards Prone hip extension/trunk hip extension Full hip extension before glutes used Single leg raise Short hamstrings Forward bend test Short gastroc, short hamstrings, forward sway of hips on return to stand Side lying lateral rotation of hip Weak lateral rotators C ORRECTING Aim to improve strength of synergist muscles of hip extension and reduce recruitment of hamstrings. Hamstring lengthening antigravity and passive Strengthen glute max Side lying hip abduction with slight lateral rotation Forward bend with glute initiation of movement not hamstrings Dr Mark McKean Fitness Research USC E XERCISE P RESCRIPTION A NTERIOR P ELVIC T ILT 5 FILEX 2012 M USCLES ARE LENGTHENED - REQUIRE SHORTENING Hamstrings Gluteus maximus External oblique Quadratus lumborum* M USCLE ARE SHORTENED – REQUIRE LENGTHENING Low effort isometric contractions Build up to 10 x 10 s – low weight bearing Maintain good posture in exercises Iliopsoas Quadriceps Antigravity stretches Long duration up to 10‐12 min Light tension stretches Low balance weight bearing postures M USCLES ARE WEAK - REQUIRE STRENGTHENING VMO Anterior Glute medius Lateral hip rotators General dynamic exercises Isolated to integrated approach E XERCISE P RESCRIPTION P OSTERIOR P ELVIC T ILT M USCLES ARE LENGTHENED - REQUIRE SHORTENING One joint hip flexors External obliques Quadriceps Dr Mark McKean Fitness Research USC M USCLE ARE SHORTENED – REQUIRE LENGTHENING Hamstrings Internal oblique Rectus abdominis Intercostals 6 FILEX 2012 M USCLES ARE WEAK - REQUIRE STRENGTHENING Medial hip rotators D R M ARK M C K EAN P H D CSCS AEP MESSA Post Doctoral Research Fellow University of Sunshine Coast Australian Institute of Fitness Research mmckean@usc.edu.au Dr Mark McKean Fitness Research USC 7