Head Joint

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Head Joint

Made of the same quality materials as the Black & Silver putty knives. Full tang construction and patented handle. Hammer head is built into handle to set drywall nails. No. 02570: 4” No. 02770: 5” No. 02870: 6”

“If the push strength is concentrating on one terminal share (point-A) of a lever, provided that terminal part (point-A) is in contact with a stable surface, then the opposite terminal share (point-B) of the lever will tend to move away from that stable surface and the final mechanical outcome will be rotation of the entire lever, using point-A as axis”.

In respective situations, humane skeletal levers behave like the aforementioned statement. A very simple example is “heel raise” mechanism in standing. To correlate this ‘heel raise’ with the aforementioned statement, let us consider the entire foot as a lever that extends from heel to toes. Let the heel share be point-A and the toe (or forefoot) be point-B. When the calf muscles fabricate strength with the foot not in contact with ground (say, in high sitting posture), then the forefoot (point-B) moves away from the anterior percentage of the leg. But when the calf muscles develop strength with the foot in contact with ground (say, in standing), then the heel (point-A) will tend to raise and move away from the ground. Keeping this clear or deep perception as base, let us go through respective examples.

[1] PUSH UPS: An try to horizontally adduct the arm with hands in contact with the ground, in the end lifts the body with the push strength used by humeral heads. To understand this, consider lower end of humerus as point-A and humeral head as point-B. In fact, the role of serratus anterior (protractor of scapula) is so indispensable here that makes the medial end of clavicles also to lift the upper body at sterno-clavicular joint.

[2] BRIDGING: An undertake to extend the hip (in crook lying posture) at long last lifts the pelvis with the push strength used by femoral heads.To comprehend this, consider lower end of femur as point-A and femoral head as point-B.

[3] SQUATS: An try to extend the hip ultimately lifts the entire body with the push strength employed by femoral heads on pelvis. To understand this, consider lower end of femur as point-A and femoral head as point-B.

[4] LUNGES: An try to extend the hip of front leg in the end lifts the entire body with the push strength used by femoral heads on pelvis. To understand this, consider lower end of femur as point-A and femoral head as point-B. This maneuver is further reinforced by an try to extend the knee of the rear leg that in the end transmits a push strength to the pelvis through femoral heads.

[5] PLANK ON HANDS: Same as push-ups but we must include hip flexion also. An try to flex the hips with forefeet (metatarsal heads) on the ground in the end lifts the pelvis with the push strength employed by femoral heads on pelvis.To comprehend this, consider lower end of femur as point-B and forefeet as point-A. (In fact, the role of Quadriceps in keeping the knee extended is also significant)

[6] PARALLEL BAR DIPS: An try to flex the shoulders up to neutral state from finish extension, at long last leads to elbow extension and elevation of the entire body as a result of push strength applied on shoulder girdle through humeral heads. To perceive this, consider lower end of humerus as point-A and humeral head as point-B.

[7] PULL UPS: An try to adduct the shoulders from abducted state, ultimately leads to elbow flexion and elevation of the entire body as a result of push strength used on shoulder girdle through humeral heads. To comprehend this, consider lower end of humerus as point-A and humeral head as point-B.

[8] KNEEL SITTING TO KNEELING: An undertake to extend the hips ultimately leads to elevation of the entire body as a result of push strength employed on pelvis through femoral heads. To understand this, consider lower end of femur as point-A and femoral head as point-B.

[9] SIDE LYING TO SIDE SITTING: An try to extend the elbow and horizontally abduct the under-lying arm with it is hand on the ground at long last lifts the trunk to obtain side-sitting posture. To comprehend this, consider hand as point-A and humeral head as point-B.

[10] FORWARD LUNGE TO NEUTRAL STANDING POSTURE: An undertake to fetch the front leg backward to attain neutral standing position using calf muscle (and quadriceps muscle), in the long run leads to elevation of heel and motion of this lower limb backwardly. To understand this, consider forefoot as point-A and heel as point-B.

There are so galore examples existing, but some of them require pictorial explanation.

Head Joint Photo

Head Joint Image

Head Joint Photo

Head Joint Pic