▁also ▁deb ated ▁( for ▁example , ▁some ▁suggest ▁the ▁tight ness ▁of ▁lig ament ▁is ▁the ▁initial ▁cause ▁of ▁the ▁growth ▁ab normal ity ). ▁In ▁addition ▁to ▁the ▁common ▁lord osis , ▁it ▁has ▁been ▁suggested ▁that ▁between ▁ 2 0 – 3 0 % ▁of ▁patients ▁with ▁Sch eu ermann ' s ▁D ise ase ▁also ▁have ▁sc ol ios is , ▁though ▁most ▁cases ▁are ▁neg lig ible . ▁In ▁more ▁serious ▁cases , ▁however , ▁the ▁combination ▁is ▁class ified ▁as ▁a ▁separate ▁condition ▁known ▁as ▁k y ph os col ios is . ▁ ▁C aus es ▁The ▁cause ▁is ▁not ▁currently ▁known , ▁and ▁the ▁condition ▁appears ▁to ▁be ▁mult ifact orial . ▁Several ▁candidate ▁gen es ▁( such ▁as ▁FB N 1 , ▁which ▁has ▁been ▁associated ▁with ▁Mar fan ) ▁have ▁been ▁proposed ▁and ▁ex cluded . ▁ ▁Di agn osis ▁ ▁Di agn osis ▁is ▁typically ▁by ▁medical ▁imag ing . ▁The ▁degree ▁of ▁k y ph osis ▁can ▁be ▁measured ▁by ▁C obb ' s ▁angle ▁and ▁sag itt al ▁balance . ▁ ▁Tre at ment ▁ ▁Conserv ative ▁Sch eu ermann ' s ▁disease ▁is ▁self - lim iting ▁after ▁growth ▁is ▁complete , ▁meaning ▁that ▁it ▁generally ▁runs ▁its ▁course ▁and ▁never ▁presents ▁further ▁comp lication . ▁Typ ically , ▁however , ▁once ▁the ▁patient ▁is ▁fully ▁grown , ▁the ▁b ones ▁will ▁maintain ▁the ▁de form ity . ▁For ▁this ▁reason , ▁there ▁are ▁many ▁treatment ▁methods ▁and ▁options